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果树喷施农药,是为了保护果树,提高果品产量和质量。农药停用过早,不利于消灭晚期的病虫;农药停用过晚,果实内的残留量太高,食用后有损于人们的身体健康。农药在果树体内外的残留量,是依农药的毒性高低、残效期长短及不同树种而异,但都是随着时间的延长而降低。所以,果树最后一次施药距收果前的时间长短(安全间隔期)要根据农药的种类及果树种类而确定的。具体要求是: 三氯杀螨醇在果树上应用的安全间隔期
Pesticides are sprayed on fruit trees in order to protect fruit trees and increase fruit yield and quality. Pesticides discontinued prematurely, is not conducive to the elimination of late pests and diseases; pesticide suspension too late, the residual amount of fruit is too high, after eating detrimental to people’s health. Residues of pesticides both inside and outside the fruit trees vary depending on the toxicity of the pesticide, the duration of the residual effect, and the species of the tree species, but all decrease with time. Therefore, the fruit tree from the time before the final application results (safety interval) according to the type of pesticide and fruit tree species to determine. The specific requirements are: The safety interval of application of dicofol in fruit trees