人类生命活动所必需的绝大多数物质和能量,目前只能由生物的生命活动过程来产生,而在这些生命活动过程中最基础的是植物生产,土壤成为植物生长的天然基地,土壤不仅使它成为植物生长的天然基地和种植业不可缺少的生产资料,也为动物生产(畜、禽、水产养殖业)提供饲料,所以动物生产也离不开土壤。因此,为了满足人类对生物产品的需要,必须进行植物生产。植物生产包括粮食作物、经济作物(棉花、麻类、油料、糖类、烤烟、蔬菜、药材等)、饲料、饲草作物以及果、林木等的生产,要进行植物生产必须有 At present, most of the material and energy necessary for human life activities can only be produced by biological life activity processes. The most basic of these life activities is plant production, and the soil becomes the natural base of plant growth. The soil not only makes It becomes a natural base for plant growth and an indispensable means of production in the farming industry. It also provides feed for animal production (livestock, poultry and aquaculture), so animal production is also inseparable from the soil. Therefore, in order to meet human needs for biological products, it is necessary to carry out plant production. Plant production includes the production of food crops, cash crops (cotton, hemp, oil, sugar, flue-cured tobacco, vegetables, herbs, etc.), fodder, forage crops and fruit and trees,