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应用农业药剂防治作物的病虫害,不能单纯的从药效方面去考虑,也必须要注意到药害的问题。由于应用药剂不当或由于其他因素的影响,在农业生产实践中产生药害的事故屡见不解,严重地影响作物的生产。例如1953年昌黎试验场北戴河分场,因波尔多液的药害,使苹果受到很大的损失,其中金冠品种受害的果实达80％,而1954年被害更严重,金冠品种受害率达100％。又如1955年辽南苹果产区,普遍的发生了波尔
Application of agricultural pesticides to prevent crop pests and diseases, can not simply consider the efficacy, but also must pay attention to the problem of phytotoxicity. Due to improper application of pesticides or other factors, accidents that cause phytotoxicity in agricultural practices are commonplace and seriously affect the production of crops. For example, the Beidaihe Sub-station of Changli Experimental Station in 1953 suffered large losses due to the phytotoxicity of Bordeaux mixture. Among them, the golden crown suffered 80% of fruit damage, but was harmed more severely in 1954 and its damage rate was 100%. Another example is the 1955 southern Liaoning apple-producing areas, the general occurrence of Boer