寒地水稻秸秆还田可以增加土壤有机质 ,改善理化性质 ,是很好的有机肥源。目前开展还田非常必要 ,势在必行 ,并有成功的粉碎翻压 ,旋埋翻压 ,堆积沤制还田技术 ,应推广应用 Rice straw in winter can increase soil organic matter, improve physical and chemical properties, is a good source of organic fertilizer. At present, it is imperative to go back to the field, and it is imperative to smash it, turn it over and turn over the pressure and pile it up and return it to the field, which should be popularized and applied