论文部分内容阅读
为害石榴的害虫种类较多,我国有200多种,常见的有以下几种:日本龟蜡蚧俗称介壳虫,属同翅目,蜡蚧科,以若虫固着在叶片或新梢上吸食汁液,并分泌粘液,诱发煤污病,影响光合作用,使树势衰弱,引起大量落叶、落果,严重时可致绝产甚至全树枯死。防治方法:(1)药剂防治。若虫孵化后至蜡壳形成前是药
Pest damage pomegranate species more than 200 kinds of our country, common are the following: Japan turtle wax scale commonly known as scale insects, is a Homoptera, wax scale Division, nymph immobilized on the leaves or shoots on the juice, And secretion of mucus, induced coal pollution, affecting photosynthesis, so that the weak potential of trees, causing a large number of deciduous, deciduous, severe cases can lead to dead or even full-tree dead. Prevention and treatment methods: (1) Pharmacy control. Nymph hatch after the formation of wax shell before the drug