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我县开展棉虫综防工作是自1974年开始的,最初由于不了解天敌的消长情况及其在食物网中的相互关系,结果收效不大。1975年—1977年,我们从调查主要天敌的消长情况入手,研究发挥天敌作用的正确途经,经几年的试验,终于取得成效。我们考察获得成功的大队,其主要特点是,以生态学的观点,科学地改变棉田生态条件,使其不仅有利于棉花持续增产,而且有利于害虫天敌的栖居和增殖,从而有效地提高生防措施的效益。一、棉蚜、棉铃虫及其天敌消长情况我县危害棉花的害虫主要有棉蚜和棉铃虫。棉田内控制棉蚜、棉铃虫的天敌主要是
Since the beginning of the year of 1974, the county started to carry out the comprehensive prevention and control of cotton insects. Initially, it did not realize much success because it did not understand the growth and decline of natural enemies and their relationship with the food web. From 1975 to 1977, we started with the investigation of the growth and decline of major natural enemies and studied the correct ways of using natural enemies. After several years of experiments, we finally achieved results. We examine the successful brigade, its main feature is that, from ecological point of view, scientifically change the ecological conditions of cotton so that it will not only help cotton continue to increase production, but also conducive to habitat and proliferation of pests natural enemies, so as to effectively improve students Effectiveness of preventive measures. First, cotton aphids, cotton bollworm and its natural enemies of the growth and decline I County cotton pests mainly cotton aphid and cotton bollworm. Cotton aphid control cotton, cotton bollworm predators are