改革耕作制度,增加复种指数是提高农作物单位面积产量的重要途径。但是,增加复种往往出现与季节、劳力、土壤、肥料等矛盾,合理地解决这些矛盾,就能加速粮食生产的大上快上。因此,除了季节、劳力可以通过作物品种的合理搭配和发展机械动力以解决之外,如何搞好土肥建设,以适应当前发展改制的需要,这是在广大地区急待解决的问题。本文着重从土壤肥力的变化,论述改制与用地养地的关系,供生产上参考。 Reforming the farming system and increasing the multiple cropping index are important ways to increase the yield per unit area of ​​crops. However, increasing the number of multiple-cropping often conflicts with seasons, labor, soil and fertilizers, and a reasonable solution to these conflicts can speed up the pace of food production. Therefore, in addition to the seasons, labor can be solved through the rational collocation of crop varieties and the development of mechanical power. How to do a good job of building soil fertilizers to meet the needs of the current development and restructuring is an urgent issue to be solved in many areas. This article focuses on the changes of soil fertility, discusses the relationship between land reform and land use for reference.