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二、虫害危害药用植物的动物种类很多,其中主要是昆虫,其它还有螨类、蜗牛、鼠类等。昆虫中虽有很多属于害虫,但也有益虫。如蜜蜂能酿蜜;寄生蜂、寄生在害虫身体内;瓢虫、步行虫能扑食害虫。认识昆虫,研究昆虫,掌握害虫发生和消长规律,对于防治害虫,保护药用植物获得优质高产,具有重要意义。 (一)昆虫的形态特征昆虫是动物界里最大的一个类群。它们虽然具有千变万化的形态构造,但有着共同的基本结构,即由头、胸、腹三个体段组成。在每个体段上分别着生不同的附属器官。
Second, pests endanger the medicinal plants of many species, mainly insects, there are other mites, snails, mice and so on. Although many insects are pests, but also beneficial insects. Such as bees can honey; parasitic wasps, parasites in the body of pests; ladybugs, walking pests can prey pests. Recognizing insects, studying insects, grasping the occurrence and growth of pests rules for pest control, medicinal plants to obtain high-quality and high yield, of great significance. (A) the morphological characteristics of insects Insects are the largest in the animal kingdom. Although they have an ever-changing morphological structure, they share a common basic structure consisting of three body segments, head, chest and abdomen. In each body segment were born different appendages.