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杉梢小卷蛾是杉木幼林的大害虫,它专门危害杉木的梢头。据调查,侧枝受害后就会影响主梢的正常生长,如果主梢受害,轻则影响生长,重则造成多头生长不良。为控制这一害虫的危害,摸索出有效的防治方法,我们进行了杉梢小卷蛾性引诱的试验研究。一、粗提杉梢小卷蛾成虫体长5.6毫米,羽化时间集中在上午,羽化后第二天下午到傍晚交尾。每天下午收集当天上午羽化的成虫,存放到第二天下午再全部浸泡在二氯甲烷中或乙醚中。浸泡半小时左右取出鉴别雌雄,去掉雄蛾,把雌蛾腹部摘下,继续浸泡过夜。第三天把浸泡液和雌蛾腹部放到研钵中磨碎,使之充分溶解,最
Pine wildebeest is a large pest of a young pine plantation, which specifically harms the stumps of the fir. According to the survey, the side branches will affect the normal growth of the main shoot victims, if the main shoot victims, ranging from the impact of growth, while causing multiple poor growth. In order to control the harm of this pest and find out the effective control methods, we carried out the experimental research on the sexual attraction of the small headed moth. First, the crude cedar tip small-headed moth adult body length 5.6 mm, emergence time concentrated in the morning, feather after the afternoon of the second day to evening mating. Every afternoon afternoon, adult worms are collected in the morning of the same day and stored in the afternoon of the next day soaked in methylene chloride or ethyl ether. Soak for about half an hour to identify the male and female, remove the male moth, the female moth abdomen off, continue to soak overnight. The third day the soaking solution and the female moth abdomen into the mortar grinding, make it fully dissolved, most