山西膨润土资源、性质及在农业上的应用

The Resources Characters and Agricultural Applications of Bentonite in Shanxi

综述了山西膨润土的理化性质。膨润土具有较强的交换、吸附、粘结等性质,土壤施用膨润土后,可提高土壤的保水保肥性,减少土壤对磷、钾的固定;膨润土与化学肥料混合能提高肥料的利用率;膨润土用作饲料添加剂可提高家禽的饲养价值,降低饲料成本,膨润土在农业上有广阔的应用前景。

A summary was presented of the physicochemical properties of bentonite in Shanxi.Bentonite is characterized by its better exchange, absorption, cohesiveness, etc. It was pointed out that, after used in soil, bentonite could raise the storage capacities of soil for water and fertilizer. In addition, reduce the fixations of soil for phosphorus (P) and potassium (K). The mixture of bentonite and chemical fertilizer could increase the fertilizer use efficiency(FUE).Bentonite which used as forage additive can not only improve the value of poultry raise, but also reduce the cost of fodder. Bentonite has a broad application prospect in agriculture.