1.A new typal insecticide, its generation, physical and chemical properties, insecticidal mechanism, insecticidal characteristic and synthesis of diflubenzuron are introduced.

1.介绍了虫剂──除虫脲的发现、理化性质、虫机理、虫特点及合成方法。

2.According to the author's experience in the control of cotton aphids.the systemic insecticidal action of Systox was different when it was applied at different times of the day.

2.正>在与贫中农一起用1059(吸磷)防治棉蚜的多次生产实践中作者曾经注意到,一天同时间喷药,药效有差异,傍晚喷药药效较好。