植物营养与肥料学报2025，Vol.31Issue(4)：819-828,10.DOI:10.11674/zwyf.2024471
我国南方紫云英还田的水稻产量和效益的量化研究
Quantitative assessment of rice yield and profit efficiency of milk vetch returning to field in southern China
摘要
Abstract
[Objectives]As one of the three main fertilizer sources for rice production,planting milk vetch and returning to the rice field has a long history in south China.We analyzed the large amount of field experimental data in the seven provinces(autonomous regions)of southern China,trying to quantify the effects of milk vetch return on rice yield and economic benefits,and providing a theoretical basis for making policies boosting the development of milk vetch production and utilization.[Methods]Using the keywords"milk vetch","milk vetch combined with chemical fertilizer application"and"rice yield,"we conducted a literature search in Web of Science,China National Knowledge Infrastructure(CNKI),and Baidu Scholar databases prior to April 30,2024.Subsequently,the searched literature was screened based on the following criteria:1)the experimental sites were located in the southern rice-growing regions of China;2)the data were limited to field-based,long-term location experiments;3)the experiments focused on the milk vetch-rice farming system and included treatments such as fallow control without milk vetch,milk vetch combined with chemical fertilizer application,chemical fertilizer application only,and milk vetch application only;and 4)the observed results included sample size,mean values,and standard errors.Ultimately,39 articles were obtained,providing a total of 4850 rice yield data points.The data normal interval estimation method was used to calculate characteristic values such as rice yield increasing rate of milk vetch,rice yield increasing rate of chemical fertilizers,substitution rate of chemical fertilizer by milk vetch,and output-input ratio of fertilizers for milk vetch and chemical fertilizers.[Results]In the rice-growing regions of southern China,the average rice yield increase attributed to milk vetch was 48.3 kg/t.The yield increase was lower for single-cropping rice than for double-cropping rice but higher than for early rice.The average rice yield increasing rate of chemical fertilizers was 6.18 kg/kg.The average substitution rate of chemical fertilizers by milk vetch was 8.52 kg/t.When the fresh yield of milk vetch was 22.5 t/hm2,the average output-input ratio for milk vetch was 2.23,and for chemical fertilizers,it was 2.66.There were no significant difference in these indicators among early rice,single-cropping rice,and double-cropping rice.The economic value of milk vetch as a fertilizer averaged 187.7 yuan/t.When the fresh yield of milk vetch was below 9.92 t/hm2,milk vetch contributed negatively to the economic benefit in the milk vetch-rice system.The rice yield increase potential of the milk vetch-rice system was 729 kg/hm2 higher than that of the winter fallow-rice system.[Conclusions]In southern China rice production area under long-term milk vetch-rice rotation system,the economic value of milk vetch as fertilizers is 187.7 yuan/t,the average rice yield increasing rate of milk vetch is 48.3 kg/t,equal to 8.52 kg/t of chemical fertilizer in efficiency.Considering the potential of milk vetch on rice yield and profit,planting milk vetch during winter fallow season and adopting production techniques that improve its fresh biomass yield is recommended in south China rice systems.关键词
大数据分析/紫云英/水稻增产量/紫云英的化肥替代率/紫云英产投比/经济效益Key words
big data analysis/milk vetch/rice yield increase/substitution rate of chemical fertilizers by milk vetch/output-input ratio of milk vetch/economic benefit引用本文复制引用
王建红,冯含笑,曹凯,张贤,徐静,斯林林,徐昌旭,王佳宇,曹卫东..我国南方紫云英还田的水稻产量和效益的量化研究[J].植物营养与肥料学报,2025,31(4):819-828,10.基金项目
财政部和农业农村部—国家现代农业产业技术体系建设专项资金(CARS-22) （CARS-22）
国家重点研发计划(2021YFD1700200) （2021YFD1700200）
浙江省农业科学院专项经费项目(2024R20CB001). （2024R20CB001）
