红蜘蛛又叫短须螨,是苹果树上的重要害虫之一,主要发生在气温高、湿度大、通风不良的情况下。红蜘蛛繁殖极快,它主要吸食叶片及初萌发的枝叶,以刺吸式口器吮吸汁液而为害植株,若虫常群集于一些花卉的叶背及花蕾上,叶片严重受害后可全叶变黄焦枯而脱落。严重受害的果树,不仅当 Spider mites, also known as short-mite mites, are one of the major pests on the apple tree and occur mainly in conditions of high temperature, high humidity and poor ventilation. Spider mites reproduce very fast, it mainly uses leaves and the early germination of foliage, sucking mouthparts to suck juice and damage plants, nymphs often clustered in some flower leaves back and flower buds, the leaves seriously damaged after the whole leaf can turn yellow Jiao and off. Fruit trees severely damaged, not only when