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一、漆树害虫及其发生的条件漆树在生长发育过程中,往往发生多种害虫的危害。据调查,我国漆树害虫约有80多种,其中主要害虫有20余种。因此,识别漆树害虫,掌握害虫的发生条件,对于防治害虫是十分必要的。 (一)哪些是漆树害虫。人们常说的害虫,绝大多数指昆虫。昆虫属动物界节肢动物门昆虫纲。在世界上所有的动物中,昆虫的种类最多,约在100万种以上。在这里边,48.2％是吃植物的,28％是捕食其昆虫,2.4％是寄生在其它动物体内或体外的,还有17.3％是吃腐烂东西
First, the paint tree pests and their conditions of occurrence In the process of growth and development of paint tree, a variety of pests often occur hazards. According to the survey, there are about 80 kinds of tree pests in our country, of which there are more than 20 kinds of major pests. Therefore, the identification of tree pests, insect pests to understand the conditions for the prevention and control of pests is very necessary. (A) What are tree pests? People often say that pests, the vast majority refers to insects. Insect is the animal kingdom arthropod door Insecta. Among all the animals in the world, the largest number of insects, about 1 million species or more. In this area, 48.2% eat plants, 28% eat insects, 2.4% are parasitic in other animals or in vitro, and 17.3% eat rotten things