农作物秸秆还田技术主要是以机械的方式将田间的农作物秸秆直接粉碎并抛洒于地表,随机耕翻入土,使之腐烂分解,从而培肥地力,实现农业增产增收。该技术可改良土壤理化性状,加速生土熟化,提高土壤肥力,好处很多。据有关资料统计,目前我国每年生产秸秆6亿t,其中含氮超过300万t,含磷超过70万t,含钾超过700万t,相当于我国目前化肥施用总量的1/4以上,可见农作物秸秆是一 Crop straw to field technology is mainly mechanical means to the field of crop straw directly crushed and sprinkled on the surface, randomly tillage into the soil, decompose it rotten, so as to fertilize fertility and increase agricultural incomes. The technology can improve soil physical and chemical properties, accelerate the maturation of soil and improve soil fertility, a lot of benefits. According to statistics, at present, China annually produces 600 million tons of straw, including more than 3 million tons of nitrogen, more than 700,000 tons of phosphorus and more than 7 million tons of potassium, equivalent to more than 1/4 of the total amount of fertilizer used in China. Visible crop straw is one