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药害和病害容易被混淆,在生产中常常由于判断错误而延误补救措施,从而影响作物产量。因此,正确认识和区分药害与病害很重要,有助于及时采取有效的措施,减少损失。一、斑点型斑点型药害主要表现在作物叶片上,有时也发生在茎秆或果实皮上。常见的药斑有褐斑、黄斑、网斑等几种。斑点在植株上分布往往无规律,全田亦表现有轻有重;而生理性病害通常发生普遍,植株出现症状的部位较一致。斑点型药害与真菌性病害的区别在于,前者斑点大小、形状变
Phytosanitary and disease are easily confused, and remedies are often delayed in production due to misjudgment, affecting crop yields. Therefore, it is very important to correctly understand and distinguish between pesticide damage and disease, which will help promptly take effective measures to reduce losses. First, the spot-type spot-type phytotoxicity mainly in crop leaves, and sometimes also occurred in the stalk or fruit skin. Common spots have brown spots, macula, net spot and so on. Spots are often irregular in the distribution of plants, the whole field also showed light weight; and physiological diseases are common, the plant parts of the symptoms appear more consistent. The difference between spot-type phytotoxicity and fungal disease lies in the fact that the former has a spot size and a shape that changes