柠檬酸渣是生产柠檬酸的副产品，主要成分是硫酸钙，还含有一定士的氮、磷、钾和多种微量元素．将柠檬酸渣用作土壤调理剂，既可减少对环境的污染，又为生产厂家提供了一条变废为宝途径。据试验，柠檬酸渣施入土壤后，可使土壤容重降低，孔隙度增加，透水性增强，表土渗透速度? Citric acid residue is a by-product of the production of citric acid, the main component is calcium sulfate, but also contains a certain amount of nitrogen, phosphorus, potassium and trace elements. Citric acid residue as a soil conditioner, can reduce the pollution of the environment, but also for manufacturers to provide a way to turning waste into treasure. According to the test, citric acid residue applied to the soil, can reduce the bulk density of the soil, increased porosity, increased permeability, surface penetration rate?