所谓药害是指农药使用不当而引起植物发生的各种病态反应,包括由药物引起植物的组织损伤、生长受阻、植株变态、减产、绝收、甚至死亡等一系列非正常生理变化。1作物药害的症状1.1斑点斑点药害主要发生在叶片上,有时也在茎秆或果实表皮上。常见的有褐斑、黄斑、网斑等。1.2黄化 The so-called injury refers to the improper use of pesticides caused by a variety of pathological changes in plants, including the damage caused by the drug-induced tissue damage, growth retardation, plant abnormalities, production cuts, even death and a series of abnormal physiological changes. 1 symptoms of crop injury 1.1 spots speckle injury occurs mainly in the leaves, sometimes on the stalk or fruit epidermis. Common brown spots, macula, mesh spots and so on. 1.2 yellow