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本市(区)常用防治二化螟、卷叶螟、稻虱农药以甲胺磷、敌敌畏、杀虫双等为主。但计划供应少,不能满足防治需要,且对“三虫”防效不一,兼治常需两种以上农药混配,从而增加农本和产品、环境污染。多年连用,害虫易产生抗性,为解决上述农药不足,增添高效治“三虫”农药品种,我们在1989年于观察区进行久效磷杀灭水稻“三虫”效果和增产效益的试验及大田示范。实践表明,每亩用久效磷有效含量20、26和30克,均对二化螟有95％以上效果,对卷叶螟、稻虱有90％左右的杀灭作用,且增产效益显著,3种施药区的平均
The city (area) commonly used in the prevention and treatment of stem borer, leafroller, rice planthopper methamidophos, dichlorvos, insecticidal double-based. But the planned supply is small, can not meet the needs of prevention and treatment, and the “three worms” control effect is different, often require two or more pesticides mixed, thereby increasing the agricultural capital and products, environmental pollution. For many years, pests are easy to produce resistance. In order to solve the above shortage of pesticides and add high efficiency “three insect” pesticide varieties, in 1989 we tested the effect of monocrotophos on killing “three insects” and yield increase in rice Daejeon demonstration. Practice shows that per acre with monocrotophos effective content of 20,26 and 30 grams, were more than 95% of the results of the Chilo suppressalis on leaf roller, rice planthopper about 90% of the killing effect, and yield a significant improvement, 3 kinds of application area of the average