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Effects of tillage practices on nutrient loss and soybean growth in red-soil slope farmland

International Soil and Water Conservation Research 2013年第3期1卷 49-55页

作者： Yang Jie Zheng Haijin Chen Xiaoan Shen Le Jiangxi Institute of Soil and Water Conservation Jiangxi Provincial Key Laboratory of Soil Erosion and PreventionNanchangChina

Field experiments were conducted to examine the effect of tillage practices on sediment and nutrient loss and soybean growth under natural rainfall *** tillage practices were applied:downslope ridge(check),downslope ridge+contour living hedgerow,and cross *** ridge tillage reduced surface runoff by 69%and sediment yield by 86%,compared to the check *** downslope ridge with a contour living hedgerow reduced surface runoff by 24%and sediment yield by 53%.Additionally,compared to the check plot,nutrient losses carried by runoff were reduced by over 68%and that carried in the sediment was reduced more than 85%in the cross ridge *** losses in runoff were reduced by 20%to 30%in the downslope ridge and contour living hedgerow plot and those carried in the sediment were reduced by 44%to 57%.Cross ridge tillage soybean yields exceeded those of the downslope ridge and downslope ridge+contour living hedgerow treatments by 16%-18%.Cross ridge tillage could contribute to the prevention sediment and nutrient loss and could improve crop yield,and thus it is recommended to be applied to mild slopes in the red soil region.

关键词： Red soil Slope farmland tillage practices Nutrient loss Crop growth

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Changes in soil biochemical indicators at different wheat growth stages under conservation-based sustainable intensification of rice-wheat system

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Journal of Integrative Agriculture 2018年第8期17卷 1871-1880页

作者： Tanushree Bera Sandeep Sharma H.S.Thind Yadvinder-Singh H.S.Sidhu M.L.Jat Department of Soil Science Punjab Agricultural University Borlaug Institute for South Asia (BISA) International Maize and Wheat Improvement Center (CIMMYT) CIMMYT National Agricultural Science Complex

Soil microbes play critical roles in soil biogeochemistry, soil biological health and crop productivity. The current study evaluated the effects of tillage and residue management on changes in soil biochemical indicators at different growth stages of wheat after 5 years of rice-wheat system. Nine treatment combinations of tillage, crop establishment and crop residue management included three main plot treatments applied to rice:(1) conventional till direct dry seeded rice(CTDSR),(2) zero till direct dry seeded rice(ZTDSR), and(3) conventional puddled manual transplanted rice(CTPTR) and three subplot treatments in subsequent wheat:(1) conventional tillage with rice residue removed(CTW-R),(2) zero tillage with rice residue removed(ZTW-R) and(3) zero tillage with rice residue retained as surface mulch(ZTW+R). Irrespective of rice treatments, ZTW+R treatment had higher soil biochemical indicators compared with ZTW-R and CTW-R at all the growth stages of wheat. Generally, all the biochemical indicators were the highest at the flowering stage of wheat. Residual effect of rice treatments was also significant on biochemical quotients in wheat, which were the highest under ZTDSR followed by CTDSR and CTPTR. The present study provided three sensitive and reliable biochemical indicators(microbial biomass, basal soil respiration and microbial quotient) which respond rapidly to change in tillage and residue management practices in RWS of South Asia.

关键词： microbial metabolic quotients tillage practices residue retention cropping system

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Carbon sequestration and emissions mitigation in paddy fields based on the DNDC model: A review

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Artificial Intelligence in Agriculture 2020年第1期4卷 140-149页

作者： Shan Yin Xianxian Zhang Junyao Lyu Yuee Zhi Feng Chen Longqin Wang Chunjiang Liu Sheng Zhou School of Agriculture and Biology Shanghai Jiao Tong University800 Dongchuan Rd.Shanghai 200240China Eco-Environmental Protection Research Institute Shanghai Academy of Agricultural Sciences1000 Jinqi RdShanghai 201403China Shanghai Yangtze River Delta Eco-environmental Change and Management Observation and Research Station Ministry of Education800 Dongchuan RdShanghai 200240China Shanghai Urban Forest Ecosystem Research Station National Forestry and Grassland Administration800 Dongchuan Rd.Shanghai 200240China Key Laboratory for Urban Agriculture Ministry of Agriculture and Rural Affairs800 Dongchuan Rd.Shanghai 200240China Shanghai Engineering Research Centre of Low-carbon Agriculture(SERCLA) 1000 Jinqi RdShanghai 201403China Shanghai Chongming Modern Agricultural Park Management Committee 2 Chongming Beishougeng RdShanghai 202163China Shanghai Songlin Food(Group)CO.LTD 2268 East Rongle RdShanghai 201613China

The DeNitrification–DeComposition(DNDC)model is a process model with a series of carbon and nitrogen biogeochemistry in *** incorporates the driving factors of the ecological environment and aims to simulate the carbon and nitrogen cycle in the terrestrial ***,the model can be applied effectively in a paddy *** on an investigation and literature review,this study summarized and analyzed the impact of agricultural practices such aswatermanagement,fertilizer application,and strawincorporation on greenhouse gas emissions and soil carbon *** years of improvement,the DNDC model can presently be used effectively to evaluate the carbon sequestration and emissions mitigation potential of various agricultural ***,the related details of scientific processes of agricultural management,such as biochar incorporation and plastic mulching in paddy fields,should be added or modified and combined with experimental cases of actual agricultural practices to complete the calibration of the model,provide theoretical support for its promotion,and establish a reliable method of evaluating carbon sequestration and emissions mitigation in paddy fields.

关键词： Soil organic carbon Greenhouse gas emissions Exogenous carbon addition tillage practices Water and fertilizer management

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No tillage outperforms conventional tillage under arid conditions and following fertilization

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Soil Ecology Letters 2023年第1期5卷 137-141页

作者： Stavros D.Veresoglou Junjiang Chen Xuheng Du Qi Fu QingLiu Geng Chenyan Huang Xilin Huang Nan Hu Yiming Hun Guolin C.Li Zhiman Lin Zhiyu Ma Yuyi Ou Shuo Qi Haitian Qin Yingbo Qiu Xibin Sun Ye Tao YiLing Tian Jie Wang Lingxiao Wu Ziwei Wu Siqi Xie Ao Yang Dan Yang Chen Zeng Ying Zeng RuJie Zhang School of Ecology Sun Yat-sen UniversityGuangzhou 510006China

Reduced tillage practices present a tool that could sustainably intensify *** existing literature,however,lacks a consensus on how and when reduced tillage practices should get *** reanalyzed here an extensive dataset comparing how regular tillage practices(i.e.,conventional tillage)impacted yield of eight crops compared to stopping tillage altogether(i.e.,no-tillage practice).We observed that aridity and fertilization favored no tillage over conventional tillage whereas conventional tillage performed better under high fertility *** further show that the responses are consistent across the *** reanalysis complements the original and fills a gap in the literature questioning the conditions under which reducing tillage presents a viable alternative to common tillage practices.

关键词： Aridity Crop production Soil erosion Sustainable agriculture tillage practices

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