论文部分内容阅读
土壤中碳酸的含量决定着土壤的化学性质。高碳酸钙的土壤呈碱性,其 PH 值高,土壤中游离钙的浓度也高。磷肥施于
The amount of carbonic acid in the soil determines the chemical properties of the soil. High calcium carbonate soil alkaline, its high PH value, the concentration of free calcium in the soil is also high. Phosphate applied