针对哈尔滨市稻田养分严重亏缺的问题，通过水稻收割机配套秸秆粉碎装置或留高茬的方式，利用高速打浆机耙田作业，结合水稻泡田和氮肥运筹等农艺措施，实现了在正常水稻生产情况下的水稻秸秆全部还田，缓解了有机质含量下降和养分缺乏等水稻田土壤退化带来的压力。试验示范结果表明，水稻秸秆全量还田可以达到7.2%以上的增产效果，连续3年还田能使土壤有机质约提高0.6 g/kg。

For solving the problem of nutrient deficiency of rice field in Harbin, the technique of returning rice straw to field was developed in cold regions. The technique can reduce the stress of soil degradation. The demonstration results indicated that the rice yield was increased by 7.2% at least after returning total rice staws to field, and the soil organic matters was increased by roughly 0.6 g/kg for three consecutive years.