有机—矿质复合材料控释尿素在水稻上的应用效果

Effect of organic-mineral compond coated urea on rice

试验采用15N示踪的方法,在盆栽水稻上测试了3种新研制的控释尿素(控1、控2、控3)的应用效果。施用3种控释尿素的处理与施普通尿素相比,水稻的氮肥利用率分别增加了3 64、19 92和10 53个百分点,产量分别增加了34 59、18 56和8 66个百分点,控2处理的效果最好。图3,表2,参6。

In this study ,we investigated effects on Nitrogen Utilization Efficiency(NUE)in rice by ^(15)N tracting pot experiment from 3 newly created Controlled Release Ureas(CRU).The NUE was improved by application of CRU.The NUE of CRU in rice was increased by 3.46%,19.92% and 10.53% compare with CK,CRU 2 gave the best result.In this experiment,the yield increases were 34.59%,18.56% and 8.66% compared with CK,F=88.49>F_(0.01)=6.99 CRU2 gave the best result.