土壤含水量和pH对酸化土壤中百菌清残留的影响

Effects of Soil Water Content and pH on Chlorothalonil Residues in Acidification Soil

[目的]探究不同土壤pH和不同土壤含水量条件下酸化土壤中百菌清的残留规律.[方法]通过模拟试验研究了不同pH和土壤含水量对酸化土壤中百菌清残留的影响.[结果]分别对于不同的pH和不同的含水量,土壤中的百菌清残留量均随着时间的增加而呈现逐渐减少趋势,其中,试验在开始的前3d土壤中的百菌清残留量减少速度都很快,在3～7d百菌清残留量减少速度稍有减缓,7d之后百菌清残留量进入一个平稳缓慢的减少过程.[结论]为土壤环境的修复以及维持耕种系统的健康提供了借鉴.

[Objective] The law of Chlorothalonil residues in acidification soil under different soil pH values and different soil moisture were studied.[Method] Effects of different soil pH values and different soil moisture on Chlorothalonil residues in acidification soil were studied through simulation test.[Result] As for different pH values and different moisture test separately,all the residues of Chlorothalonil in soil decreased gradually with the increase of time.Among them,the residues of Chlorothalonil in soil decreased quickly in the first three days of test,and decreased slowly from three days to seven days,and then the decrease of Chlorothalonil residues in acidification soil went into a smooth slow process after seven days.[Conclusion] The results provide reference for repairing of soil environment and maintaining the health of farm system.