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从1973年以来,我县对水稻三种主要害虫开展大面积综合防治试验,摸索出了一些综合防治的有效方法。1975年,在190多个生产队11,240亩水田上,采用农业技术、生物防治和合理施用化学农药等综合防治措施,取得了良好的防治效果。首先控制了害虫的危害。把三化螟造成的枯心率和白穗率分别压低到0.4%和0.1%以下,第二、五代稻纵卷叶螟卷叶率控制在0.4—1.4%,露田、放鸭吃虫田块的稻飞虱虫口比不露田、放鸭的田块虫口减少63—93%;综防区乎均每亩残存三化螟、稻纵卷叶
Since 1973, our county has carried out a large-scale comprehensive prevention and control test on three major pests of rice and worked out some effective methods for comprehensive prevention and control. In 1975, over 11,240 mu paddy fields of more than 190 production teams adopted comprehensive prevention and control measures such as agricultural technology, biological control and rational application of chemical pesticides, and achieved good control effects. First control the harm of pests. The dry heart rate and white spike rate caused by the rice stem borer were reduced to 0.4% and 0.1%, the second and fifth generation rice leafroller roll control rate of 0.4-1.4%, open field, Of the rice planthopper than non-exposed mouth, duck duck fields to reduce the population of 63-93%; almost all defensive area residual rice borer, rice longitudinal leaf curl