摘要
[目的]通过开展紫云英-早稻肥效试验,合理确定在早稻作物上施用紫云英后化肥减量水平,为指导仙桃市早稻科学施肥提供依据。[方法]在早稻田设置紫云英-早稻肥效试验,分析各处理间土壤肥力变动情况和产量差异水平,科学建立施用紫云英后早稻施肥指标。[结果]在早稻田施用紫云英,可以降低土壤pH和容重,提升土壤速效氮磷钾和有机质含量,提高早稻的养分利用率和经济效益。[结论]在早稻施用紫云英后,以减施20%的化肥效果最好、最佳经济施用量为N 115.2 kg/hm2、P2O570.8 kg/hm2、K2O 98 kg/hm2。
[ Objective] By conducting Astragalus sinicus-early rice experiments, reasonable application of milk vetch on early rice crop fertilizer level, reducing the guidance garden early rice provided the basis for scientific fertilization. [ Method ] In setting Astmgalus sinicus - early rice experiments, the chics of soil fernhty and yield difference between the groups were analyzed, and scientific apphcatlan of Astragalus st- n/cus - early rice fertilizafi~ index was established. [ Result] Applied at waseda milk vetch, the soil pH and bulk density were reduced, soil available NPK and organiC; matter content was improve, and the early rice nutrient use efficiency and economic benefits were increased. [ Conclusion] After the early applieation ofAstragalus sinicus to reduce 20% of the chemical fertilizer effect was the best. The optimum economic a- mount was N 115.2 kg/hm^2, P2O5 70 8 kg/hm^2 and K2O 98kg/hm^2.
出处
《安徽农业科学》
CAS
2013年第27期10984-10985,10988,共3页
Journal of Anhui Agricultural Sciences
关键词
早稻
紫云英
化肥用量
合理配比
Early rice
Astragalus sinicus L.
Application of chemical fertilizer
Reasonable proportion
