一看红蜘蛛:从果树发芽开始至10月上旬,定树定枝(芽)每5天观察红蜘蛛的成虫数量。一个果园按东、西、南、北、中五点定5株观测树,每株在树冠下部定10枝,注意选择窝风易发生红蜘蛛的树。花前主要看花芽,花后看叶。当每百芽或百叶超过500～1000头时,即应喷药,或可简化为随机抽查方法,但每次抽查不应少于200叶,抽查间隔期可拉长一些。 A look at the red spider: From the beginning of the fruit tree sprout until early October, Ding Shu Ding (bud) every 5 days to observe the number of adult spider mite. An orchard according to east, west, south, north, five in five fixed observation tree, each plant in the canopy set 10, pay attention to nest nest prone to spider mite tree. Flower mainly to see flower buds, flower see leaves. When the buds per 100 or more than 500 to 1000 head, that should be sprayed, or can be simplified as a random sampling method, but each sampling should be less than 200 leaves, sampling interval can be lengthened.