土宜分析所解决的是因土种植和因土管理(耕作、施肥、灌溉)的問題;概而言之,就是应当如何正确合理的利用土地,以期用最少的劳、畜力和肥料能够取得最大的經济效益。过去的土壤工作抓战术問題抓得多,而且研究工作往往不是从現实的生产力水平出发,缺乏大面积均衡增产的战略思想做指导,对小面积土地深耕、施肥、定向培育的經驗注意得多,忽略了合理利用土地資源的重要性。其实,人类和自然的斗爭,第一步还是如何利用自然,土壤改良的目的,也是为了更好的利用土地,因此,在任何条件下,因土种植是一个地区合理的耕作制度中的作物布局所必需遵循的原則,因而在当前以耕作制度为綱所展开的土壤科学研究活动中,土宜的研究被認为是一个带有战略性意义的新方向;而目前人民公社的各个生产队又有权处理自己作物布局的問題,因 The soil to be analyzed is the problem of soil cultivation and soil management (farming, fertilizing and irrigation); in the final analysis, it is how to use the land properly and reasonably in order to achieve the maximum with minimal labor, animal power and fertilizer The economic benefits. In the past, there were many grasping problems in soil work, and the research work often did not guide them from the actual level of productivity and lacks the strategic thinking of large-scale and balanced production. It paid more attention to the experience of deep-plowing, fertilizing and oriented cultivation of small-area land , Ignoring the importance of rational use of land resources. Actually, the first step in the struggle between mankind and nature is to make use of nature and to improve the soil. It is also to make better use of the land. Therefore, under any conditions, soil cultivation is a crop arrangement within a reasonable regional farming system Therefore, in the current soil science research activities with the tillage system as the key link, the study on the soil should be considered as a new direction with strategic significance. At present, all the production teams of the people’s commune Have the right to deal with the issue of their own crop layout, because