大豆食心虫是吉林省大豆的主要害虫之一。其幼虫蛀入豆荚危害豆粒,造成“兔嘴”或“虫口豆”。一般年份虫食率约5—1O%,严重年份高达30%以上,是严重影响大豆质量和产量的因素之一。因此,确保大豆优质高产,必须及时抓好大豆食心虫的防治。目前防治大豆食心虫的主要措施除选用高产抗虫品种外,生产上关键是要抓住成虫发生盛期和幼虫蛀荚前这两个时期,前者可用田间日落前(约17—18时左右)出现成虫“打团群飞”现象做标志(成虫其它时间不活动)或其它时间田间百步惊蛾发现成虫数量猛增时也可作为成虫盛期的标志。这个时期一 Soybean borer is one of the major pests of soybean in Jilin Province. Its larvae moth into pods damaging beans, resulting in “rabbit mouth ” or “insect mouth beans ”. The general year worm rate of about 5-1O%, severe years up to 30% or more, is a serious impact on soybean quality and yield one of the factors. Therefore, to ensure high quality and high yield of soybeans, we must promptly grasp the prevention and control of soybean borer. At present, the key measures to prevent and control soybean beetle are to choose the high-yielding insect-resistant varieties. The key point in production is to grasp the occurrence period of the adult and larvae, and the former can be used before the sunset (about 17-18 hours) Adults, “hit group fly” phenomenon to do the mark (adult other time is not active) or other time field hundred step frightened moth found that the number of adults soaring can also be used as a symbol of the peak of adult. One this time