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仙桃市紫云英-早稻肥效研究
引用本文:王必武,丁平,许国雄,张睛,专启迪.仙桃市紫云英-早稻肥效研究[J].安徽农业科学,2013(27):10984-10985,10988.
作者姓名:王必武  丁平  许国雄  张睛  专启迪
作者单位:湖北省仙桃市土壤肥料工作站,湖北仙桃,433000;湖北省仙桃市土壤肥料工作站,湖北仙桃,433000;湖北省仙桃市土壤肥料工作站,湖北仙桃,433000;湖北省仙桃市土壤肥料工作站,湖北仙桃,433000;湖北省仙桃市土壤肥料工作站,湖北仙桃,433000
摘    要:目的]通过开展紫云英一早稻肥效试验,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一早稻肥效试验,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N115.2kg/hm^2.P2O570.8kg/hm^2.K2O98kg/hm^2。

关 键 词:早稻  紫云英  化肥用量  合理配比

Study about Fertilizer Efficiency of Astragalus sinicus L. -Early Rice in Xiantao City
Institution:WANG Bi-wu et al ( Soil and Fertilizer Station of Xiantao City, Xiantao, Hubei 433000)
Abstract: 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.
Keywords:Early rice  Astragalus sinicus L    Application of chemical fertilizer  Reasonable proportion
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