近年来,在麦田进行冬前化除期间,因土壤、天气等因素的影响,不少麦区出现了明显的冻药害现象,对小麦生产造成了一定的损失,应引起注意。一、症状表现受害麦苗叶片枯黄,严重的田块基本看不见绿色,表现较明显的是异丙隆、扑草净等除草剂及复配剂的冻药害。麦田施用除草剂后,在频繁寒潮和干旱相结合的影响下易导致冻药害发生。二、发生原因很多麦田一直用含异丙隆的除草剂进行化除 In recent years, during the period of winter pre-harvest in wheat fields, due to the influence of soil, weather and other factors, many wheat fields appeared obvious phenomenon of frozen phytotoxicity and caused some losses to wheat production, which deserved our attention. First, the symptoms of symptoms of wheat seedlings withered yellow, serious plots of basic can not see the green, the more obvious performance isoproturon, prometryn and other herbicides and pesticides frozen compound injury. The use of herbicides in wheat fields can easily lead to freeze-thaw damage under the influence of frequent cold spells and droughts. Second, the causes of Many wheat fields have been used with isoproturon herbicides to remove