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茶半跗线螨[Polyphagotarsonemus lat-us(Banks)]俗名茶壁虱,属蜱螨目跗线螨科,是西南茶区,特别是四川茶区的重要害螨之一。它吸取嫩芽叶汁液,致使叶片呈铁锈色,茶芽节间缩短,最后叶片脱落,茶芽停止抽发。其危害之重,可致夏、秋茶严重减产,甚至无收。茶半跗线螨年发生代数多(30代左右);为害时间长(3～10月);抗药力强(多种杀螨剂防治无效)。目前能用于防治该螨的药剂甚少,且毒性偏高,不宜在茶叶采摘季节使用,选择对茶半跗线螨具高效、低毒、低残留量的农药品种对发展茶叶生产,确保茶叶丰产
Polyphagotarsonemus lat-us (Banks)] Commonly known as tea tick, belonging to the family Acarina, it is one of the important pests mites in southwestern tea areas, especially in Sichuan tea area. It draws bud juice leaves, resulting in rust-colored leaves, tea bud internodes shortened, the last leaf off, tea buds stop pumping. Its harm can cause serious summer and autumn tea production, or even confiscated. Occurrence of tea acanthopanax mite years (30 generations or so); harm for a long time (3 to 10 months); strong resistance (a variety of acaricidal agent control invalid). Currently available for the prevention and treatment of the mites little medicine, and high toxicity, not in the season of tea picking, choose half-mulberry thread mites with high efficiency, low toxicity, low residual pesticide varieties to the development of tea production, to ensure that tea High yield