施肥是满足农作物生长发育过程中的养分需求,提高农作物产量和品质,提高土壤能力,确保农作物高产稳产的重要技术措施。在一定范围内,农作物的产量是随施肥量的增加而增加的。但是,如果无限度地增施肥料,不但造成了肥料浪费,增加了生产成本,而且还会造成烧苗、贪青晚熟和倒伏现象。为了充分发挥肥效,提高土壤肥力,确保农作物高产稳产,降低生 Fertilization is to meet the crop growth and development in the process of nutrient requirements, improve crop yield and quality, improve soil capacity, to ensure high-yield crops important technical measures. Within a certain range, the crop yield increases with the increase of fertilizer. However, if fertilizers are added indefinitely, it will not only result in waste of fertilizers, increase production costs, but will also result in burned seedlings, late-ripening and lodging. In order to give full play to fertilizer efficiency, improve soil fertility and ensure high and stable crop yield, reduce students