水稻收割机秸秆粉碎还田法应用试验总结

Effect of Returning Straw into Field by Rice Harvester on Physical and Chemistry of Soil

通过对水稻秸秆还田连续5 a土壤养分、土壤理化性状的检测与施肥量、产量的调查,结果表明:采用水稻联合收割机秸秆粉碎翻地压入还田法能够提高土壤的养分含量、增加有机质、降低容重、降低pH值,在施肥量逐年递减(减少0～6.6 kg/667 m^2)的同时,产量却在逐年递增(增加3.1～53.9 kg/667 m^2),增产率最高达7.95%,体现了节肥增产、节资增效,是改良土壤、培肥地力,实现水稻高产稳产的重要措施之一。

The physical and chemical features of soil were investigated through five year straw returning into field. The results showed that the organic content and nutrient content in soil were increased and the bulk density and pH value of soil were decreased. Although the fertilizer application reduced annually, the grain yield increased with a yield increasing rate of 7.95%. Therefore it is an effective way to save fertilizer, increase yield, save cost and enhance benefit through ameliorating soil and improving soil fertility.