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Wei H, Zhang K, Chai N, Wang Y, Li Y, Yang J, Harrison MT, Liu K, Wan P, Zhang W, Sun G, Li Z, Zhang F. Exploring low-carbon mulching strategies for maize and wheat on-farm: Spatial responses, factors and mitigation potential. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167441. [PMID: 37774862 DOI: 10.1016/j.scitotenv.2023.167441] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/26/2023] [Accepted: 09/26/2023] [Indexed: 10/01/2023]
Abstract
Mulching strategies - including plastic film mulching (FM) and straw mulching (SM) - can enhance crop yields while affecting multiple greenhouse gas (GHG) fluxes. However, most of currently published site-based studies only focus on a certain gas, resulting in an inability to spatially integrated understanding of changes in agricultural global warming potential (GWP) and greenhouse gas intensity (GHGI) caused by mulching across China. Thus, we developed an optimal model considering crop type, meteorology, soil and management variables by four machine learning methods, namely support vector machine, multilayer perceptron, random forest, and gradient boosting machine (GBM). Then we mapped the relative changes in yield and GHG fluxes caused by mulching strategies. The GBM model had the best simulation capability for yield and GHGs in China. Our result showed that FM increased yield in maize (25 %) and wheat (19 %), while SM respectively increased by 14 % and 11 %. Among the relative changes due to mulching strategies, yield and N2O emissions were mainly influenced by soil fertility and soil properties, CH4 uptakes and CO2 emissions were more affected by environmental factors. GWP in maize and wheat average increased by 40 % under FM, while SM decreased GWP by 14 % and 2 %, respectively. Besides, FM average increased GHGI in maize and wheat by 17 % and 9 %, and SM decreased GHGI by 22 % and 12 %, respectively. Spatially, FM reduced maize GWP on 19 % of cropland, while SM reduced maize and wheat GWP on 71 % and 64 % of cropland, respectively. Soil pH was significantly correlated with ΔGHGI in maize and wheat. Our analysis not only estimated for the first time the spatial effects of mulching strategies across China, but also systematically analyzes the agricultural carbon emission mitigation potential of mulching strategies, which promote the development of low-carbon agriculture based on locally appropriate mulching strategies.
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Affiliation(s)
- Huihui Wei
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, School of Ecology, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Kaiping Zhang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, School of Ecology, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Ning Chai
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, School of Ecology, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Yue Wang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, School of Ecology, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Yuling Li
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, School of Ecology, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Jianjun Yang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, School of Ecology, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Matthew Tom Harrison
- Tasmanian Institute of Agriculture, University of Tasmania, Newnham Drive, Launceston, Tasmania 7428, Australia
| | - Ke Liu
- Tasmanian Institute of Agriculture, University of Tasmania, Newnham Drive, Launceston, Tasmania 7428, Australia
| | - Pingxing Wan
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, School of Ecology, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Wenjuan Zhang
- Institute of Qinghai Provincial Natural Resources Survey and Monitoring, Xining, Qinghai 810000, China
| | - Guojun Sun
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, School of Ecology, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Zhansheng Li
- Asia Hub, Sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Sanya, Hainan 572000, China
| | - Feng Zhang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, School of Ecology, Lanzhou University, Lanzhou, Gansu 730000, China.
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Ning L, Xu X, Qiu S, Lei Q, Zhang Y, Luo J, Ding W, Zhao S, He P, Zhou W. Balancing potato yield, soil nutrient supply, and nitrous oxide emissions: An analysis of nitrogen application trade-offs. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 899:165628. [PMID: 37467970 DOI: 10.1016/j.scitotenv.2023.165628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/14/2023] [Accepted: 07/16/2023] [Indexed: 07/21/2023]
Abstract
Potato has been promoted as a national key staple food to alleviate pressure on food security in China. Appropriate nitrogen (N) application rate is prerequisite and is crucial for increasing yield, improving fertilizer efficiency, and reducing N losses. In the present study, we determined the optimum N application rates by analyzing field trial data from the main potato producing areas of China between 2004 and 2020. We considered the equilibrium relationships between potato yield, N uptake, partial N balance (PNB), and N2O emission under different soil indigenous N supply (INS) scenarios. The results showed that N rate, INS, and their interactions all significantly affect potato yield and nutrient uptake increment. On average, N application increased potato yield and N uptake by 29.5 % and 56.7 %, respectively. The relationship between N rate and yield increment was linear-plateau, while the relationship between N rate and N uptake increment was linear-linear. Soil INS accounted for 63.5 % of total potato N requirement. Potato yield increment and nutrient uptake increment were exponentially negatively correlated with INS and had a significant parabolic-nonlinear relationship with the interaction of N fertilizer application rate and INS. PNB was negatively correlated with fertilizer N supply intensity as a power function. Based on our analysis, a N application rate of 166 kg N ha-1 was found to be sufficient when the target yield was <34 t ha-1. However, when the target yield reached 40, 50 and 60 t ha-1, the recommended N application rate increased to 182, 211, and 254 kg N ha-1, respectively, while ensuring N2O emissions low with an emission factor of 0.2 %. Our findings will help guide potato farming toward cleaner production without compromising environmental benefit.
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Affiliation(s)
- Linyirui Ning
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Xinpeng Xu
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China.
| | - Shaojun Qiu
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Qiuliang Lei
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Yitao Zhang
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, PR China
| | - Jiafa Luo
- AgResearch Ruakura, Hamilton 3240, New Zealand
| | - Wencheng Ding
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Shicheng Zhao
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
| | - Ping He
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China.
| | - Wei Zhou
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China
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Gao H, Liu Q, Yan C, Wu Q, Gong D, He W, Liu H, Wang J, Mei X. Mitigation of greenhouse gas emissions and improved yield by plastic mulching in rice production. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 880:162984. [PMID: 36963692 DOI: 10.1016/j.scitotenv.2023.162984] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 03/15/2023] [Accepted: 03/17/2023] [Indexed: 05/27/2023]
Abstract
Soil mulching technologies are effective practices which alleviate non-point source pollution and carbon emissions, while ensuring grain production security and increasing water productivity. However, the lack of comprehensive understanding of the impacts of mulching technologies on rice fields has hindered progress in global implementation due to the varying environments and application conditions under which they are implemented. This study conducted a meta-analysis based on 2412 groups of field experiment data from 313 studies to evaluate the effects of soil mulching methods on rice production, greenhouse gas (GHG) emissions and water use efficiency. The results show that plastic mulching, straw mulching and no mulching (PM, SM and NM) have reduced CH4 emissions (68.8 %, 61.4 % and 57.2 %), increased N2O emissions (84.8 %, 89.1 % and 96.6 %), reduced global warming potentials (50.7 %, 47.5 % and 46.8 %) and improved water use efficiency (50.2 %, 40.9 % and 34.0 %) compared with continuous flooding irrigation. However, PM increased rice yield (1.6 %), while SM and NM decreased yield (4.3 % and 9.2 %). Furthermore, analysis using random forest models revealed that rice yield, GHG emissions and WUE response to soil mulching were related to climate, soil properties, fertilizer and rice varieties. Our findings can guide the implementation of plastic mulching technology in priority areas, contribute to agricultural carbon neutrality and support the development of practical guidelines for farmers.
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Affiliation(s)
- Haihe Gao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, PR China.
| | - Qin Liu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, PR China.
| | - Changrong Yan
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, PR China.
| | - Qiu Wu
- College of Agronomy, Anhui Agricultural University, Hefei 230036, PR China.
| | - Daozhi Gong
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, PR China.
| | - Wenqing He
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, PR China.
| | - Hongjin Liu
- Agriculture and Animal Husbandry Ecology and Resource Protection Center of Inner Mongolia, Hohhot 010010, PR China
| | - Jinling Wang
- Development Center of Agriculture, Animal Husbandry and Science and Technology of Jalaid, Inner Mongolia 137600, PR China
| | - Xurong Mei
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China.
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Zhang X, Liang Q, Wang G, Zhang H, Zhang A, Tan Y, Bol R. Incorporating straw into intensively farmed cropland soil can reduce N 2O emission via inhibition of nitrification and denitrification pathways. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 342:118115. [PMID: 37196616 DOI: 10.1016/j.jenvman.2023.118115] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 04/24/2023] [Accepted: 05/05/2023] [Indexed: 05/19/2023]
Abstract
Straw incorporation (SI) combined with N fertilizer has been shown to affect soil N2O emission and N-related functional microbes in agriculture. However, the responses of N2O emission, community structure of nitrifiers and denitrifiers and related microbial functional genes to straw management strategies in the winter wheat season in China remain unclear. Here, we conducted a two-season experiment in a winter wheat field in Ningjing County, northern China, to examine four treatments: no fertilizer with (N0S1) and without maize straw (N0S0); N fertilizer with (N1S1) and without maize straw (N1S0), and their effects on N2O emissions, soil chemical parameters, crop yield, as well as the dynamics of nitrifying and denitrifying microbial communities. We found that seasonal N2O emissions decreased by 7.1-11.1% (p < 0.05) in N1S1 as compared to N1S0, without significant difference between N0S1 and N0S0. In combination with N fertilization, SI increased the yield by 2.6-4.3%, altered the microbial community composition, increased Shannon and ACE indexes, and decreased the abundance of AOA (9.2%), AOB (32.2%; p < 0.05), nirS (35.2%; p < 0.05), nirK (21.6%; p < 0.05) and nosZ (19.2%). However, in the absence of N fertilizer, SI promoted the major genera of Nitrosavbrio (AOB), unclassifiied_Gammaproteobacteria, Rhodanobacter (nirS), Sinorhizobium (nirK), which strongly correlated positively with N2O emissions. Thereby, a negative interaction effect between SI and N fertilizer on AOB and nirS emphasized that SI could offset the increase of N2O emission caused by fertilization. Soil moisture and NO3- concentration were the major factors affecting N-related microbial community structure. Our study reveals that SI suppressed N2O emission significantly and simultaneously decreased the abundance of N-related functional genes and altered denitrifying bacterial community composition. We conclude that SI helps to enhance yield and alleviate fertilizer-induced environmental costs in intensively farmed fields in northern China.
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Affiliation(s)
- Xin Zhang
- State Key Laboratory of North China Crop Improvement and Regulation, College of Resources and Environmental Sciences, Hebei Agricultural University, Baoding, 071000, China.
| | - Qing Liang
- State Key Laboratory of North China Crop Improvement and Regulation, College of Resources and Environmental Sciences, Hebei Agricultural University, Baoding, 071000, China
| | - Guiyan Wang
- Key Laboratory of North China Water-saving Agriculture, Ministry of Agriculture and Rural Affairs, Baoding, Hebei, 071001, China
| | - Haowen Zhang
- State Key Laboratory of North China Crop Improvement and Regulation, College of Resources and Environmental Sciences, Hebei Agricultural University, Baoding, 071000, China
| | - Aijun Zhang
- Mountainous Area Research Institute of Hebei Province, Baoding, 071000, China
| | - Yuechen Tan
- Institute of Ecological Conservation and Restoration, Chinese Academy of Forestry, Beijing, 100091, China
| | - Roland Bol
- Institute of Bio- and Geosciences, Agrosphere (IBG-3), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany; School of Natural Sciences, Environment Centre Wales, Bangor University, Bangor, LL57 2UW, UK
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5
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Xiong XB, Zhao ZY, Wang PY, Zhou R, Cao J, Wang J, Wesly K, Wang WL, Wang N, Hao M, Wang YB, Tao HY, Xiong YC. In situ degradation of low-density polyethylene film in irrigation maize field: Thickness-dependent effect. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:159999. [PMID: 36368391 DOI: 10.1016/j.scitotenv.2022.159999] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/05/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
Thickness of low-density polyethylene (LDPE) film might determine its mechanical strength, clean production and soil health. Yet, this issue is little understood. In situ aging effects were evaluated in LDPE films with the thickness of 0.006 mm, 0.008 mm, 0.010 mm and 0.015 mm in maize field. The data showed that maximum tensile force (TFmax), maximum tensile strength (TSmax) and elongation at break (EAB) were massively lowered with increasing thickness after aging. The greatest and lowest reduction magnitude of EAB was 27.6 % and 11.2 % in 0.006 mm and 0.015 mm films respectively. Also, the melting point (Tm) and crystallinity (Xc) under Differential Scanning Calorimeter (DSC) tended to decline with the increasing thickness. Moreover, the peak intensity of crystalline regions tended to transfer and concentrate on the amorphous regions, and such tendency became more pronounced in the thin films. Interestingly, there existed a pronounced distinct thickness-dependent effects on soil bulk density (SBD) and soil water-stable aggregate proportion. Thick plastic film mulching increased SBD but reduced the proportion of macroaggregates (mainly referred to 0.015 mm and 0.010 mm). In addition, thick film mulching slightly reduced the levels of soil organic carbon (SOC) and total nitrogen (TN), but significantly promoted the contents of soil labile C and N. Particularly, it significantly promoted above- & under-ground biomass of maize across two growing seasons (p < 0.05). To sum up, thickening LDPE film may act as a promising solution to improve LDPE film residue recycling, while benefiting for higher productivity. However, thick film mulching may cause a certain adverse impact on soil structure, and further investigations would be needed in the future.
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Affiliation(s)
- Xiao-Bin Xiong
- State Key Laboratory of Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China
| | - Ze-Ying Zhao
- State Key Laboratory of Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China
| | - Peng-Yang Wang
- State Key Laboratory of Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China
| | - Rui Zhou
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, China
| | - Jing Cao
- State Key Laboratory of Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China
| | - Jing Wang
- State Key Laboratory of Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China; Gansu Key Laboratory of Resource Utilization of Agricultural Solid Wastes, Tianshui Normal University, Tianshui 741000, China
| | - Kiprotich Wesly
- State Key Laboratory of Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China
| | - Wen-Li Wang
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, China
| | - Ning Wang
- State Key Laboratory of Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China
| | - Meng Hao
- State Key Laboratory of Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China
| | - Yi-Bo Wang
- Gansu Key Laboratory of Resource Utilization of Agricultural Solid Wastes, Tianshui Normal University, Tianshui 741000, China
| | - Hong-Yan Tao
- State Key Laboratory of Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China
| | - You-Cai Xiong
- State Key Laboratory of Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, PR China.
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Li Y, Wang J, Chen R, Wang E, Wang B, Yu Q, Hu Q, Pan Z, Pan X. Climate-smart planting for potato to balance economic return and environmental impact across China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 850:158013. [PMID: 35970467 DOI: 10.1016/j.scitotenv.2022.158013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/06/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
Potato production plays an important role in safeguarding food security in China since the central government implemented the 'Potato-as-Staple-Food' policy in 2015. However, a key challenge facing China's potato production is to realize a tradeoff between economic return and environmental impact. Effective strategies for reducing carbon emission without compromising potato yield remain to be developed. This study conducted a comprehensive assessment by integrating climate, soil, crop, and agricultural input data, crop model and life cycle impact assessment model to quantify potato yields, GHG emission amounts and intensities (GHGI), and economic benefits under the conventional planting pattern (CPP), the lowest GHG emission pattern (LEP), and the highest yield pattern (HYP) across China's potato planting regions including four sub-regions, i.e., North Single planting region (NS), Central Double planting region (CD), South Winter planting region (SW), and Southwest Mixed planting region (SWM). Averaged fresh potato yield, GHG emission amount, and GHGI under the CPP were 21.7 t ha-1, 2815.1 kg CO2eq ha-1, and 137.3 kg CO2eq t-1, respectively, in China's potato planting region. Compared with the CPP, averaged GHG emission amount and GHGI under the LEP could be decreased by 48.2 % and 51.5 % respectively while the fresh potato yield and economic benefit could be enhanced by 8.1 % and 18.5 %, respectively. For the HYP, averaged GHG emission amount and GHGI could be decreased by 24.2 % and 39.8 % respectively while the fresh potato yield and economic benefit could be enhanced by 18.7 % and 39.6 %, respectively, compared with the CPP. Across the four potato planting regions, SW had the largest potential in reducing GHG emissions owing to a high reduction amount of nitrogen application rate. Our study demonstrates that optimizing agronomic management could reduce environmental impact without compromising economic benefit and provides a scientific method for assessing crop potential to realize the climate-smart planting.
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Affiliation(s)
- Yang Li
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Jing Wang
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
| | - Renwei Chen
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Enli Wang
- CSIRO Agriculture and Food, GPO Box 1666, Canberra, ACT 2601, Australia
| | - Bin Wang
- NSW Department of Primary Industries, Wagga Wagga Agricultural Institute, NSW 2650, Australia
| | - Qiang Yu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Shaanxi 712100, China
| | - Qi Hu
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Zhihua Pan
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Xuebiao Pan
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
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Sun Y, Yang W, Shi H, Tanveer SK, Hai J. Past, present, and future perspectives of biodegradable films for soil: A 30-year systematic review. Front Bioeng Biotechnol 2022; 10:1006388. [PMID: 36324902 PMCID: PMC9621393 DOI: 10.3389/fbioe.2022.1006388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/03/2022] [Indexed: 11/20/2022] Open
Abstract
Based on the Web of Science Core Collection (WOSCC) database, the academic works published in the past 30 years on biodegradable films for soil were analyzed. In order to ensure the rigor of this experiment, this paper is based on the mathematical double matrix model VOS Viewer software and CiteSpace software. This work shows that publications of biodegradable films for soil are increasing year by year; polymer science is the hottest subject in the field of biodegradable films for soil; China and the United States are the countries with the most significant number of publications in this field, has an important position; Washington State University is the most published institution. This study further identifies and reveals the essential characteristics, research strength, knowledge structure, main research fields, and research hotspots in the late stage of the field of biodegradable films for soil and introduces the Activity Index (AI) and the Attractive Index (AAI), thereby assessing trends and performance in different countries. The paper also further illustrates the importance of biodegradable films by presenting field trials using biodegradable films on different plants. The research in the field of biodegradable films for soil is divided into four categories: “The research field of degradation,” “The effect of biodegradable film on soil,” “Performance and mechanism of the biodegradable film,” and “Effects of biodegradable film on crop growth and development.”. The study can be seen as a microcosm of the development of biodegradable films for soils, which will help researchers quickly identify their general patterns. Readers can better understand the changes and development trends in this field in the past 30 years and provide references for future research.
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Affiliation(s)
- Yitao Sun
- College of Agronomy, Northwest A&F University, Yangling, China
| | - Wenlong Yang
- College of Agronomy, Northwest A&F University, Yangling, China
| | - Hongxia Shi
- College of Agronomy, Northwest A&F University, Yangling, China
| | | | - Jiangbo Hai
- College of Agronomy, Northwest A&F University, Yangling, China
- *Correspondence: Jiangbo Hai,
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Zhang L, Qin R, Chai N, Wei H, Yang Y, Wang Y, Li FM, Zhang F. Optimum fertilizer application rate to ensure yield and decrease greenhouse gas emissions in rain-fed agriculture system of the Loess Plateau. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 823:153762. [PMID: 35151728 DOI: 10.1016/j.scitotenv.2022.153762] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/03/2022] [Accepted: 02/05/2022] [Indexed: 06/14/2023]
Abstract
Application of nitrogen (N) can increase the supply of N in soil and, in turn, can lead to higher yield-but also to large increase in emissions of greenhouse gases (GHGs) if applied in excess. To determine the optimum dose of N for maize planting system, we analysed the relationship between yield and emissions of GHGs at seven levels of N, namely 50, 100, 150, 200, 250, 300, and 350 kg ha-1, using the DNDC (denitrification decomposition) model and maize grown with and without mulching. The model simulated the following variables: maize production; emissions of carbon dioxide (CO2), nitrous oxide (N2O), and methane (CH4); global warming potential (GWP); and GHG intensity (GHGI). We used data from 1980 to 2013 for a rain-fed region of the Loess Plateau in north-western China and validated the DNDC model against data from field experiments. The model performed well in simulating yield and GHG emissions (Adj.R2 > 0.61). Under mulching, the average yield of maize was 3.6-12.2 t ha-1 and the partial factor productivity was 73.1-35.0 kg kg-1; and both of these were significantly higher 78%-236% than those in the crop without mulching. The emissions of CO2, N2O, and the GWP increased with the increase in the dose of N whereas CH4 emissions remained unaffected by the dose. Mulching increased yields significantly in the north-western region, and the GWP and GHGI were higher mainly in the central and north-western regions. The optimum dose of N for maize grown with mulching ranged between 150 kg ha-1 and 200 kg ha-1 and offers the best balance between higher yield and lower emissions. The optimum dose may promote the development of mulched maize and provide a reference standard for dryland agriculture in zones with similar climates elsewhere in the world.
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Affiliation(s)
- Li Zhang
- College of Ecology, Lanzhou University, Lanzhou, 730000, China
| | - Rongzhu Qin
- College of Ecology, Lanzhou University, Lanzhou, 730000, China
| | - Ning Chai
- College of Ecology, Lanzhou University, Lanzhou, 730000, China
| | - Huihui Wei
- College of Ecology, Lanzhou University, Lanzhou, 730000, China
| | - Yang Yang
- College of Ecology, Lanzhou University, Lanzhou, 730000, China
| | - Yancheng Wang
- College of Agronomy, Nanjing Agricultural University, Nanjing, 210095, China
| | - Feng-Min Li
- College of Ecology, Lanzhou University, Lanzhou, 730000, China
| | - Feng Zhang
- College of Ecology, Lanzhou University, Lanzhou, 730000, China.
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