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宝鸡市生物防治现场会议在横渠召开以后,对我们鼓舞和促进很大,在利用赤眼蜂防治第二代棉铃虫取得良好效果的基础上,进一步开展了对第三代棉铃虫防治试验的研究工作,经过一个多月的实践,通过复壮蜂种和人工繁殖,共繁蜂230余万头,放蜂治虫185亩次,取得了较好的防虫效果。一、试验效果:在防治三代棉铃虫的试验过程中,根据今年棉铃虫世代重叠,卵期拉的过长的特点,我们确定放蜂四次。为了消灭伏蚜的危害,在放蜂期间,喷化学农药一次。鉴于棉花株植高
After the convening of the biological control site meeting in Baoji City, we greatly encouraged and promoted us. On the basis of using Trichogramma to control the second-generation cotton bollworm and achieving good results, we further carried out the third-generation prevention and control test of cotton bollworm Research work, after more than a month of practice, through the rejuvenation of bee species and artificial propagation, a total of more than 230 million beehive, beekeeping bee 185 mu times, and achieved good pest control effect. First, the test results: In the control of three generations of cotton bollworm in the test process, according to this generation of cotton bollworm generation overlap, the oval pull too long, we determine the bee-up four times. In order to eliminate the harm of the aphid, during the beekeeping, chemical pesticides spray once. Given the high cotton plant height