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一、主要板栗害虫的发生规律与最佳防治时机掌握主要板栗害虫的发生规律,是科学管理板栗害虫的前提和基础。任何一种害虫在全年的危害期间,对药剂的敏感程度是不同的,对药剂最敏感的时期用药效果就显著,一般是在害虫幼龄阶段防治最为有利。但对一年多代的害虫,并非是各代的幼龄时期都是最有利防治时期,就需要根据发生整齐与否而作出判断,选择发生最整齐一代的幼龄阶段是最为关键的。
First, the occurrence of the main chestnut pests and the best time to prevent and control the timing of the main chestnut pests to grasp the rules, is the scientific management of chestnut pests and the basis for the premise. The sensitivity of any kind of pests during the whole year is different from that of the agents. The effect is obvious when they are most sensitive to the agents. Generally, it is most advantageous to control the pests at the young stage. However, for pests and diseases of more than a year, not all generations of young people are the most advantageous stage of prevention and control, it is necessary to make judgments based on the occurrence of neatness. It is most crucial to choose the most young generation of young people.