湖南农业科学Issue(9)：38-43,6.DOI:10.16498/j.cnki.hnnykx.2025.009.008
紫云英配施有机肥模式下水稻产量和田面水质量变化特征
Characteristics of Rice Yield and Field Surface Water Quality Changes Under the Application of Organic Fertilizer Combined with Chinese Milk Vetch
摘要
Abstract
This study aims to explore the effects of applying Chinese milk vetch combined with organic fertilizer on the basis of rice straw incorporation on the rice yield and field surface water quality in double-cropping paddy fields with red soil.The experiment was carried out with five treatments:control without fertilization(CK),conventional application of nitrogen,phosphorus,and potassium chemical fertilizers(NPK),combined application of organic fertilizers and chemical fertilizers(NPKM),combined application of organic fertilizers and Chinese milk vetch(NPKM2+Chinese milk vetch),and combined application of Chinese milk vetch and chemical fertilizers(NPK+Chinese milk vetch).The rice yield,economic traits,leaf SPAD value,and nitrogen and phosphorus content in field surface water were compared among different treatments.The results showed that the fertilization treatments generally increased the rice yield,among which the NPKM2+Chinese milk vetch treatment had the best effect,with the annual rice yield increasing by 6.0%-43.9%compared with those of other treatments.The SPAD values of late rice leaves in the NPK+Chinese milk vetch,NPKM,and NPKM2+Chinese milk vetch treatments were higher than those in the CK and NPK treatments,indicating that returning Chinese milk vetch to the field and applying organic fertilizers enhanced the photosynthetic capacity of rice.The SPAD values of late rice leaves had positive correlations with late rice yield,effective number of panicles,and thousand-seed weight.The period of 20-30 days after fertilization was critical for the prevention and control of non-point source pollution.At this time,the concentrations of ammonium nitrogen and soluble phosphorus in field surface water increased.Thus,it is considered that on the basis of rice straw incorporation,applying Chinese milk vetch combined with organic fertilizers can improve the rice yield and photosynthetic capacity,while attention should be paid to the impact of fertilization on the loss of nitrogen and phosphorus in the soil.The findings provide a scientific basis for optimizing the fertilization strategy and preventing and controlling non-point source pollution.关键词
施肥模式/紫云英、稻草还田/水稻产量/田面水质量Key words
fertilization mode/returning Chinese milk vetch and rice straw to the field/rice yield/quality of field surface water分类
农业科技引用本文复制引用
罗禄生,聂梦平,向宏光,高学成,唐湘文,黄晶..紫云英配施有机肥模式下水稻产量和田面水质量变化特征[J].湖南农业科学,2025,(9):38-43,6.基金项目
国家绿肥产业技术体系(CARS-22-Z09) （CARS-22-Z09）
中国农业绿色发展研究会农业绿色发展固定观测试验任务(2024-001-09) （2024-001-09）
国家水稻产业技术体系(CARS-01-88) （CARS-01-88）
