秸秆与缓释肥配施对水稻产量及氮素吸收利用率的影响

Effects of Application of Controlled-release Fertilizer Combined with Wheat Straw on Rice Yield and Nitrogen Use Efficiency

以花优14为材料,研究了秸秆与缓释尿素配施对水稻产量及氮素吸收利用率的影响。结果表明,秸秆与缓释肥配施处理较常规施肥处理有效穗数和千粒重明显增加,从而显著提高水稻产量,增幅达到13.4%-17.8%。秸秆与缓释肥配施能明显提高秸秆生物量、籽粒及秸秆含氮量,将氮素吸收利用率从28.7%-40.2%（常规施肥处理）提高到71.6%-77.6%。缓释肥作基肥一次性施入,可有效节省人力成本。秸秆与缓释肥配施能增加水稻产量,提高氮素吸收利用率,减少人力成本,具有很大的应用前景。

The effects of application of controlled-release fertilizer combined with wheat straw on rice yield and nitrogen use efficiency were studied in this paper,with Huayou 14（Oryza sativa L.）as material. The results showed that application of controlled-release fertilizer combined with wheat straw clearly increased rice yield by 13.4%-17.8%, mainly due to the increases of effective panicles and1000-grain weight compared to common chemical fertilizer application. Application of controlled-release fertilizer combined with wheat straw could also enhance rice straw biomass, nitrogen content in grain and straw, which led to a significantly higher nitrogen use efficiency（71.6%-77.6%） compared to common chemical fertilizer application（28.7%-40.2%）. Controlled-release fertilizer was applied only once, and as base fertilizer, would effectively save labor costs. Application of controlled-release fertilizer combined with wheat straw increased rice yield, enhanced nitrogen use efficiency, saved labor costs, may have a promising future.