园林有害生物包括昆虫、真菌、细菌、病毒、蜘蛛、线虫、蛞蝓等,其中以昆虫和真菌种类最多,危害最烈。昆虫属于昆虫纲动物,是动物界中最大的一个纲。全世界已知动物现已超过150万种,其中昆虫就有100万种以上,占2/3。而植物已知种类仅为33.5万种左右,只有昆 Garden pests include insects, fungi, bacteria, viruses, spiders, nematodes, slugs and so on, of which insects and fungi most species, the most damaging. Insects are insects, animals, is the largest one in the world. There are now more than 1.5 million known animals in the world, of which more than 1 million are insects, accounting for two-thirds. The known species of plants is only about 335,000 species, only Kun