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豇豆螟是豆科蔬菜中的一种重要害虫,它主要是以幼虫蛀食豆危害,危害后,造成豇豆减产、品质变劣。除危害豇豆外,还危害四季豆、扁豆、刀豆等蔬菜。 防治豇豆螟,应根据豇豆生长阶段的生育特性来确定用药时间。豇豆开花是由低层盛花转入中层,中层盛花后转入顶层;开花在天亮前后,闭花在中午前后。豇豆螟的成虫产卵集中在盛花岐,卵产在花托、花萼、花瓣上,卵经过几天孵化成为幼虫。幼虫白天一般在花朵内不爬出,到夜间开始活动转移,
Cowpea borer is an important pest in leguminous vegetables. It is mainly caused by larvae infesting beans, causing the decrease of cowpea yield and deterioration of quality. In addition to the dangers of cowpea, but also endanger beans, lentils, beans and other vegetables. Prevention and control of cowpea borer, should be based on the growth characteristics of cowpea to determine the growth characteristics of medication time. The flowering of cowpea is transferred into the middle layer from the lower layer of full bloom, and the middle layer is transferred into the top layer after full bloom; before and after flowering, flowers are closed before and after noon. Cowpea borer adults lay spawning flowers Shengqi, eggs produced in the receptacle, calyx, petals, the eggs hatch after a few days to become larvae. The larvae generally do not climb out of the flowers during the daytime and begin to transfer activities at night,