葡萄毛毡病的病源为蜱螨目、瘿螨科害虫,幼虫游入叶内以吸食汁液为害,使叶片皱缩,严重时植株生育停滞,造成减产.我们于早春用甲胺磷涂干进行防治,效果非常理想。具体做法是。5月初发现病斑后,在主干分枝以下,用刷子在主干上涂50%甲氨磷原液。形成药环。宽度为主干直径的2倍,数 Grapefly disease is the source of acarina, scabies mites pests, larvae swim into the leaves to drink juice damage, leaves folds, severe plant growth retardation, resulting in reduced production .We were coated with methamidophos early in the prevention and treatment , The effect is very satisfactory. The specific approach is. Found in early May lesion, the main branches in the following, with a brush on the trunk coated with 50% methyl ammonia solution. Formation of drug ring. The width of the trunk diameter of 2 times the number