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美国农业研究局找到一种简便高效防治土壤侵蚀的方法,即在土壤中加入固土剂,让土壤自身具有抗侵蚀能力。已经采用的固土剂有两种:一种为电厂除硫副产品石膏,一种是水质净化剂聚丙烯酰胺。研究表明,将除硫副产品粉碎后,按一定比例投入耕作层中,能增加土壤团粒结构,防止土壤板结,从而增加灌溉水的渗透性。在形成地表径流情况下,掺入除硫副产品的土壤,明显不易被冲走。由于除硫副产品使土壤的持水保
The Bureau of Agricultural Research found a simple and efficient way to combat soil erosion by adding a soil-fixing agent to the soil to make the soil itself resistant to erosion. There are two kinds of soil agents that have been used: one is gypsum by-product of sulfur removal in power plants, and one is polyacrylamide, which is a water purification agent. The research shows that after the crushed sulfur byproduct is crushed, it can be added into the tillage layer according to a certain proportion, which can increase the soil aggregate structure, prevent soil compaction, and increase the permeability of irrigation water. In the formation of surface runoff conditions, the addition of sulfur in the by-product of the soil, obviously not easily washed away. As the sulfur removal by-products so that the soil water conservation