论文部分内容阅读
八角树是我国热带地区珍贵的经济树种,近年来种植面积不断扩大,害虫随之发生。八角尺蠖(Dilophodes eleganssinica Prout)是它的重要害虫之一。近年来我们对它的生物学和防治进行了一些研究,现整理报道如下。一、分布与为害国内分布在广西、云南、湖南等省区,广西主要分布在南宁、玉林、东兰、藤县、百色、凌云、防城、龙州等县市。幼虫取食八角树叶,大发生时整片树林叶片被吃光。被害轻者影响林木生长,产量下降;重者导致植株死亡。
Star anise tree is a precious economic tree species in the tropics of our country. In recent years, the planting area has been expanding and the pests have taken place. Dilophodes eleganssinica Prout is one of its major pests. In recent years, we carried out some studies on its biology and prevention and cure. First, the distribution and damage Distributed in Guangxi, Yunnan, Hunan and other provinces and autonomous regions, Guangxi mainly in Nanning, Yulin, Donglan, Tengxian, Baise, Lingyun, Fangcheng, Longzhou and other cities and counties. Larvae feeding octagonal leaves, when the whole piece of forest leaves were eaten. The light victims of the impact of tree growth, yield decline; severe lead to plant deaths.