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冬季，大部分花卉病虫都以各种形式进入越冬或休眠状态，基本上不活动，正是防治病虫的好季节。这时的防治效果直接关系到翌年病虫的发生状况，如果冬季防治措施得力，可大大降低来年病虫害的发生程度，收到事半功倍的效果。已知的牡丹病虫害共５６种，其中病害２３种，虫害３?
In winter, most flower pests enter or overwinter or hibernate in various forms, and are basically inactive. It is a good season for pest control. The control effect at this time is directly related to the occurrence of pests and diseases in the following year. If winter prevention and control measures are effective, the incidence of pests and diseases in the coming year will be greatly reduced and the result will be more multiplied. Known peony pests a total of 56 species, of which 23 kinds of diseases, pests 3?