4种农药流失性质的研究

对４种农药的流失性质，进行了实验室和田间的试验研究，结果表明，水溶性农药乐果和杀虫单，有较低的土壤水分配比，较强的渗滤性和淋洗性，较易流失并污染水环境。脂溶性农药氰戊菊酯易被土壤强烈吸附，较难渗及被淋洗，不易流失，对水环境污染较轻。丁草胺的流失性质介于水溶性农药与脂溶性农药之间。

Study on the Properties of Draining Loss of Four Kinds of Pesticide

The properties of draining loss of four kinds of pesticide have been studied in the laboratory and field. The results showed that the water soluble pesticides dimethoate and molosultap have a lower partition ratio in the system of soil and water heavy percolation and leaching properties, they are easily undergone water draining loss and polluted water environment. The liposoluble pesticides fenvalerate could be adsorbed heavily by soil, so it was difficult to percolate and leach, and difficult to under go water draining and pollute water environment. The properties of draining loss of autachlor were situated between water soluble pesticides and fenvalerate.