稻草还田冬种马铃薯减量施肥效果初报

Preliminary study on effect of incorporating rice straw to field and reducing fertilizer application to winter cropping potato

进行冬种马铃薯秸草覆盖还田、减量施肥试验，结果表明：每667m2稻草还田334kg，氮、磷施肥量各减少10％，钾减少10％～20％，马铃薯产量与对照略有增加或持平，经济效益较高。

A test on straw incorporating to field and reducing fertilizer application in winter cropping potato was carried out. The results showed that the potato yield of the treatment, which straw incorporation was 334 kg/667 m2 （5010 kg/hm2）, the application of nitrogen, phosphorus and potassium reduced by 10%, 10%, 10% -20% respectively, was slightly increased or equal to the control, and its economical benefit was higher.