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【目的】对桃粉蚜Hyalopterus amygdali(Blanchard)在桃树与杏树上发生规律及越冬生物学进行研究。【方法】在不同寄主、不同方位,定点、定时对桃粉蚜进行系统调查研究。【结果】桃粉蚜为迁移型蚜虫,在新疆桃粉蚜以卵在桃树枝条的腋芽、树皮裂缝处越冬。从3月下旬开始孵化出干母。4月下旬出现无翅孤雌蚜。在桃树与杏树上发生高峰期均为5月下旬。5月下旬有翅蚜迁移到田间夏季寄主上繁殖,9月中旬又迁回到桃树上,10月上旬开始出现性蚜,10月中旬产卵。不同方位在不同季节的发生量也各有不同:在桃树,夏季朝南方向的数量高,秋季中部数量高。而杏树,夏季朝北方向数量高。【结论】桃粉蚜越冬主要集中在桃树上。杏树比桃树发生重,并在发生时间上有前后关系。
【OBJECTIVE】 To study the regularity and overwintering biology of peach aphid Hyalopterus amygdali (Blanchard) on peach and almond trees. 【Method】 The peach aphids were systematically investigated in different hosts, in different directions, fixed point and time. 【Result】 Peach aphid was a migratory aphid. In the peach aphid in Xinjiang, the eggs were overwintered in the axillary buds of bark branches and bark cracks. Hatched dry mother from late March. A wingless parthenogenetic aphid emerged in late April. Peaks occur on peach and almond trees in late May. In late May, winged aphids migrated to field to breed in summer and returned to peaches in mid-September. Aphids began to emerge in early October and spawn in mid-October. The occurrence of different orientations varies in different seasons: in peach trees, the number is higher in the south in summer and higher in the middle of autumn. The apricot, the summer high in the north direction. 【Conclusion】 Peach aphids overwintered mainly in peach trees. Apricot trees occur heavier than peach trees and have an anteroposterior relationship when they occur.