从1980年开始,我们首先对郊区所使用的一些主要农药品种,了解其对害虫的防治效果和对天敌的影响等,同时也积极寻找一些新的农药品种。在此基础上把筛选出的农药进行合理搭配试验,试图在不影响对棉田害虫防效的情况下,找出一种较为合理的农药搭配使用方式,从而减低农药成本,提高经济效益。几年来分别在上海县华漕良种场、华漕乡黎明大队,南汇县新场乡、下沙乡等地进行试验,取得了一定的效果。 Since 1980, we first introduced some of the major pesticide varieties used in the suburbs to understand their control effects on pests and their effects on natural enemies. We also actively sought new pesticide varieties. On the basis of this, the selected pesticides were reasonably collocated with each other to try to find out a reasonable way to use the pesticides without affecting the pest control effect on the cotton fields, thereby reducing the pesticide cost and increasing the economic benefits. Over the past few years, respectively, in Huacao good seed market in Shanghai, Huacao Township Dawn Brigade, Nanhui County, Xinchang Township, Xiasha Township and other places for testing, and achieved some results.