在浙江省三种水稻土上设置稻草还田试验.结果表明,面施时秸秆中磷钾释放比深施快,最后残留量亦低;秸秆中氮的释放速度面施比深施表现为先慢后快,最后残留量亦少;到晚稻收割时,残留的秸秆有机碳一般以面施比深施为高. Rice straw returning experiment was set up on three paddy soils in Zhejiang Province.The results showed that phosphorus and potassium release rate was faster and the residue was lower at the same time, Slow and fast, the final residue is also less; to harvest late rice, the residual organic carbon straw generally higher than the rate of Shi facilities.