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一、主要病虫害 1.蚜虫类 包括桃蚜、桃 粉大尾蚜、桃瘤头蚜,以桃蚜 和桃粉大尾蚜为害最普遍,早 春桃树萌芽时,越冬卵开始孵 化,群集在花芽上为害,叶片展开后,若虫集中在叶背吸食汁液,桃蚜为害的叶片变黄色,向叶背面作不规则卷曲,它又是传播病毒的一种重要害虫,桃粉大尾蚜为害的叶片,向背面对合纵卷,叶上有蚜虫分泌的白色蜡粉,被害叶片干枯脱落,削弱树势。 2.桑盾蚧 桃树萌芽后,越冬雌成虫吸食枝干汁液,严重为害时,整个枝条呈灰白色,被害枝条凹凸
First, the main pests 1. Aphids, including peach aphid, Peach aphid, peach head aphid peach aphids and Peach aphid damage most common in early spring peach sprout, the overwintering eggs began to hatch, clustered in the flower buds On the damage, after the leaves unfold, the nymphs concentrate on the leaves and drink the juice, the leaves of the peach aphids turn yellow, irregular curly leaf back, it is also a virus transmitted an important pest, peach aphid-damaging leaves , To the back of the co-roll, aphids on the leaves of white wax, the leaves of withered off, weaken the tree potential. Sangdangjiao peach sprout, overwintering female adults eat branch juice, serious damage, the entire branches were gray, the victim branches uneven