专用配方肥对稻田氮磷径流损失及水稻产量的影响

Effects of Specific Fertilizer on Runoff Loss of Nitrogen and Phosphorus and Yield of Rice

采用田间试验,研究了水稻专用配方肥对稻田氮磷径流损失、水稻产量和肥料利用率的影响。结果表明:施用水稻专用配方肥能有效减少总氮(TN)和总磷(TP)降雨径流损失17.32%和10.88%,增加水稻产量9.28%,提高氮肥利用率8.9个百分点,并能增加水稻收获后土壤中的养分含量。配方肥减氮20%能更有效地降低TN和TP降雨径流损失,提高肥料利用率,并能保持较高的产量、土壤养分及肥料经济效益。

Effects of specific fertilizer on runoff loss of nitrogen and phosphorus,yield of rice and fertilizer using efficiency were studied by field experiment.The results showed that rice specific fertilizer could reduce rainfall runoff loss of total nitrogen（TN） and total phosphorus（TP） by 17.33% and 10.94% respectively,increase yield of rice by 9.28%,enhance using efficiency of nitrogen fertilizer by 8.9%,and increase the nutrient of soil after rice harvest.The 80% of specific fertilizer can more effectively reduced the rainfall runoff loss of total nitrogen and total phosphorus and enhanced using efficiency of nitrogen fertilizer,meanwhile maintained a higher level of yield,soil nutrient and economic benefit.