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我们在这里提出一个关于土壤耕层构造的问题,供同志们研究讨论。我们认为良好的土壤耕层构造是在我国具体土壤气候条件下,保证农作物生长发育所必需的水分和养分供应的一种综合的和最重要的标志。 一、土壤团粒构造学说是在威廉斯论述土壤肥力学说中的重要组成部分。团粒结构对土壤肥力的基本意义是在具有团粒结构的土壤中,水分与养分的存在不是相互对立的。因为在这种土壤中水和空气占据着。不同的孔隙。水浸透团粒结构体,充满于团粒中的细小的毛管孔隙中;空气则充满于团粒结构个体间比较大的非毛管孔隙中。因此在具有团粒结构的土壤中,同时进行着两种不同的生物学过程:一是在团粒结构体间进行的好气性生物学过程;一是在团粒结构体内
We are here to raise a question about the structure of soil plow for gay people to study and discuss. In our opinion, good soil tilth structure is a comprehensive and important symbol of the water and nutrient supply necessary to ensure the crop growth and development under the specific soil and climatic conditions in our country. First, the theory of soil aggregate is an important part of Williams’ theory of soil fertility. The basic significance of aggregate structure to soil fertility is that in the soil with the aggregate structure, the existence of water and nutrients are not mutually antagonistic. Because in this soil water and air occupy. Different pores. Water soaked in the pellet structure, filled with fine capillary pores in the pellet; air is filled in the relatively large non-capillary pores in the aggregate structure individuals. Therefore, in the soil with the aggregate structure, two different biological processes are carried out at the same time: one is the aerobic biological process carried out in the aggregate structure; the other is in the aggregate structure