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

介绍了新型杀虫剂──除虫脲的发现、理化性质、杀虫机理、杀虫特点及合成方法。

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.

>与贫中农1059(内吸磷)防治棉蚜的多次生产实践中作者曾经注意到,天之内不同时间喷药,药效有差异,傍晚喷药药效较好。