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农业上药害的含义,一般是指对作物的药害而言的。这种药害有褐变、黄化、白化、萎缩、卷叶、抑制生育甚至枯死。药害对于组织的各种影响尚不怎么明确,但其作用是各种各样的,如由于蛋白质的合成受阻而黄化;或者由于叶绿素的分解或合成受阻而白化,由于过酸化合物的形成而褐变;由于细胞分裂异常而奇形等等。药害依药的种类、作物、品种、散布时期、方法、环境条件等表现出不同的症状。最常见的是生成药斑多在散布后二、三天出现急性症状,有褐变、黑变、黄变
The meaning of agricultural injury, generally refers to the crop injury in terms of. This kind of phytotoxicity has browning, yellowing, albino, atrophy, curly leaf, restrain childbirth and even die. The effects of phytotoxicity on the tissues are not yet well defined, but their effects are varied, such as yellowing due to the obstruction of the protein synthesis; or the whitening due to the blockage or synthesis of chlorophyll due to the formation of peracid compounds While browning; odd shape due to abnormal cell division and so on. Different kinds of symptoms, such as the type, crop, variety, spreading period, method, environmental conditions etc., of the drug damage according to the drug are shown. The most common is the generation of drug spots and more in the spread of two or three days after the emergence of acute symptoms, browning, blackening, yellowing