在病害发生初期或发生期施用多菌灵、退菌特等可有效地防治病害。
These disease injuries can be effectively controlled by application of Derosal and Tuzet and other bactericides in its early occurrence phase or occurrence phase.
事故发生初期，事故部门或现场人员应积极采取自救措施，防止事故的扩大。
In the early stage of emergencies, affected department and on-site officers shall actively adopt salvaging measures so as to prevent elevation of its seriousness.
林间防治试验表明，在大发生初期采用油烟剂防治，在一般发生年份应用白僵菌防治越冬幼虫均有良好效果。
The results have shown that it is effective by spraying Oil-Smoke agent in the beginning of serous emerging year or using the Beauveria bassiana to control the overwintering larvae in normal year.
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