紫云英翻压还田下单季稻减量施肥试验

Experiment on Reducing Fertilizer Application in Single Cropping Rice by Incorporating Milk Vetch into Paddy Field

为达到在水稻生长期少施化肥而获得高产,探讨紫云英还田减量施肥对水稻产量及性状的影响。结果表明:翻压紫云英22 500kg·hm^(-2)、80%化肥施用量处理产量最高,翻压紫云英与化肥配施可提高水稻的丛有效穗数,说明翻压紫云英22 500kg·hm^(-2)可替代20%化肥。

In order to achieve the goal of high yield and less fertilizer application during the growth period of rice,the effects of incorporating milk vetch into paddy field and reducing fertilizer amount on the yield and properties of rice were studied.The results showed that the yield of rice was the highest while milk vetch application was 22 500 kg·hm^（-2） and 80% chemical fertilizer application,and the number of effective panicles in rice could be improved by the combination of the application of milk vetch and chemical fertilizer,indicating that incorporating 22 500 kg·hm^（-2） milk vetch could replace 20% chemical fertilizer.