我场危害竹类虫害以竹笋夜蛾为最严重,过去每年被蛀食幼笋,影响竹材产量达30万斤之多,严重的年代竹笋几乎全被蛀食光,影响翌年砍伐,造成竹林生产衰退。为了促使竹林健壮、高产,几年来我们遵循毛主席关于“同病虫害作斗争”的教导,大搞群众运动,对竹笋夜蛾进行大面积防治,通过“实践,认识,再实践,再认识”,初步掌握了对竹笋夜蛾的防治方法,取得了一定的收效。现将情况介绍如下:一、幼虫生长发育规律此虫一年一代,以卵越冬为主,翌春三月幼虫孵化后,蛀入杂草为害,凡已有此虫寄生的杂草颜色变黑褐,草心枯萎、腐烂,而未有虫寄生的杂草则颜色新鲜,生长正常。竹笋出土后,幼虫自草中爬出蛀笋继续为害。 My field of harmful pests bamboo shoots as the most serious, in the past every year eaten young shoots, affecting the bamboo production up to 300,000 kg as much, almost all eradicated bamboo serious eradicating light, affecting the following year felling, resulting in bamboo production decline. In order to promote the robustness and high yield of bamboo forest in the past few years, following the teachings of Chairman Mao on “fighting against pests and diseases”, we vigorously carried out the mass movement to prevent and control large-area bamboo shoots. By “practicing, recognizing, re-implementing and re-understanding” Preliminary mastered the prevention and treatment of bamboo shoots moths, and achieved some results. Now the situation is as follows: First, the law of larval growth and development of the worm a year, the overwinter eggs, the next spring March larvae hatch, weeds infested, who have parasitic weeds color black Brown, grass heart wilt, decay, but no parasitic weeds parasitic color fresh, normal growth. After the bamboo shoots were unearthed, the larvae climbed out of the grass and continued to harm the bamboo shoots.