在农药的环境行为研究中，常用一级动力学反应方程来模拟农药的降解或残留。
In researches on the environmental behavior of pesticides, first order chemical reaction Equation is frequently used for simulation of pesticide degradation and residue.
S421是一种农药增效剂，本文探讨了S421在28种农药中的含量及其在茉莉花和茶叶中的残留降解动态。
The S421 is a synergist of insecticides, and this paper studied its contents in 28 kinds of pesticide, and its residue and degradation dynamic in jasmine flower and tea.
研究目的为了控制农田杂草，加速土壤残留农药降解，生产无公害农产品是非常重要的。
OBJECTIVE in order to control weeds in field and quicken degradation of soil rudimental pesticide, it is very important to produce non-public farm products.
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