In order to evaluate the effect on controlling of diseases,insects and weeds pests of crops with reducing pesticide usage and application prospect of pesticide reducing agent“Jijian”in 2015,we carried out series of tests on rice,wheat and corn of“Jijian”in Anhui Province. The results showed that when“Jijian”was mixed with insecticide, fungicide and herbicide,it could reduce 50%dosage of insecticide,fungicide,and 40%dosage of herbicide respec?tively.“Jijian”could promote crop production and also be safe to crop and natural enemy.

Practice has proved to strengthen project management can give full play to the benefit of the project,improve the engineering value in use.

本文介绍的烟囱钢内筒制作、安装技术,对以后类似工程施工具有指导作用。

当你置身于地处四川西部边缘的眉山军分区,你会感受到这里的民兵政治建设成绩显著.