怎样鉴别失效农药黑龙江省绥棱县农调队丁耀忠一、粉剂型农药。如药粉已明显结块或用手能捏成团块，说明已经失效或即将失效。粉剂农药一般含水量都在５％以下。结块的主要原因是贮存过久，吸收水分引起氧化，使农药有效成分分解，以致失效。二、可湿性粉剂农药。可通过悬... How to identify the failure of pesticides Suilong County, Heilongjiang Province farming team Dingyao Zhong a powder-based pesticides. If the powder has been significantly agglomerated or can be kneaded into a clump, indicating that has expired or is about to expire. Powder pesticides generally have a water content of less than 5%. Caking is the main reason for storage for too long, absorbing moisture caused by oxidation, the active ingredients of pesticides decomposition, resulting in failure. Second, wettable powder pesticides. Can be suspended ...