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用地和养地是土壤管理的核心,其主要目的是提高土壤肥力和增加产量。土壤管理包括施肥、种植,耕作和灌溉四方面技术措施。每种一季作物或每一轮作周期,如果要求达到最佳产量,都需要在一定气候和土壤条件下合理安排和搭配这四方面措施,这就必须建立科学的土壤管理体系。因土制宜,因时制宜和因作物制宜的“三制宜”则是建立科学的土壤管理体系的基本原则,这是由
Land use and raise land are the core of soil management, and their main purpose is to improve soil fertility and increase yield. Soil management includes four technical measures: fertilization, planting, farming and irrigation. Each type of crop or each crop cycle, if required to achieve the best yield, require a reasonable climate and soil conditions to arrange and match these four measures, which must establish a scientific soil management system. Due to the local conditions, due to the time and due to crop conditions “three systems ” is the basic principle of establishing a scientific soil management system, which is caused by