紫云英还田水稻减量施肥试验

Test on the Reduced Fertilization of Rice after Returning Milk Vetch to Field

为探索紫云英翻压还田后,水稻生产中减少的化肥施用量。开展紫云英鲜草还田水稻减量施用化肥的试验,结果表明:每667m2翻压紫云英1 500kg,提高土壤有机质含量,改善土壤理化性状,提高土壤速效氮、磷、钾含量,后季早稻可以减少20%～30%的化肥施用量。

In order to explore the reduced amount of chemical fertilizer in rice production after milk vetch was incorporated into the paddy field.A test on reducing the fertilizer amount applied to paddy rice combining with fresh milk vetch grass returned to the field was carried out,and the results showed that the turning amount of 1 500 kg/667 m^2 of milk vetch could increase the content of soil organic matter,improve the physical and chemical properties of soil,increase the content of nitrogen,phosphorus,and potassium of soil,and reduce chemical fertilizer application of the following early rice by 20%to 30%.