湖南农业科学Issue(6)：21-25,5.DOI:10.16498/j.cnki.hnnykx.2025.006.004
双季稻绿肥紫云英品种的适应性筛选
Screening of Suitable Astragalus sinicus L.Varieties as Green Manure in Double-Cropping Rice Systems
摘要
Abstract
This study screened the suitable Astragalus sinicus L.varieties as green manure in double-cropping rice systems,aiming to increase the rice yield,enhance the soil fertility,and promote new variety breeding.Seven local varieties of A.sinicus were evaluated in terms of agronomic traits,growth period,fresh grass yield,seed yield,and nutrient(total carbon,total nitrogen,total phosphorus,and total potassium)content.The results demonstrated that all tested varieties exhibited early maturity,with the growth periods ranging from 181 d to 191 d.The variety No.4 had the earliest full blooming stage and the highest fresh grass yield(34 799 kg/hm2),followed by varieties No.5,No.2,No.6,and No.3.No.6 had the highest content of nutrients among all tested varieties,followed by No.4,and both varieties had the lowest carbon-to-nitrogen ratio(11.9).No.2 achieved the highest seed yield(987 kg/hm2),followed by No.4,No.5,and No.6.In conclusion,in double-cropping rice systems,'Xiangzi 4'(No.4),'Minzi 7'(No.5),and'Wanzi 1'(No.6)were recommended as green manure varieties.关键词
紫云英/品种/鲜草产量/种子产量Key words
Astragalus sinicus L./variety/fresh grass yield/seed yield分类
农业科技引用本文复制引用
王宇,胡明勇,黎鹏,鲁艳红,廖育林,聂军,张江林..双季稻绿肥紫云英品种的适应性筛选[J].湖南农业科学,2025,(6):21-25,5.基金项目
湖南省农业科技创新资金项目(2024CX41 （）
2024CX104) （）
国家绿肥产业技术体系(CARS-22-G-11) （CARS-22-G-11）
