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水稻二化螟是水稻重要害虫之一，近年来在沈阳地区危害呈逐年加重之势，生产上已开始使用药剂防治。但因二化螟以前在沈阳地区危害并不严重，所以对此害虫的危害和防治情况研究得很少，从1990年起我们对其生活史及防治此害虫的有效药剂进行了研究，并取得了初步结果。在此基础
Rice stem borer is one of the important pests in rice. In recent years, its harm in Shenyang has been increasing year by year. The production of chemical pesticides has begun to be used. However, because of the fact that the stem borer had not been seriously damaged in Shenyang before, there were few studies on its damage and control. Since 1990, we have studied its life history and effective pesticides against this pest and obtained The initial result. Based on this