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栾多态毛蚜〔Periphyllus koelrcutoriae(Takahashi)〕一年发生5代,以卵越冬。一代干母发生盛期为3月下旬~4月上旬;二代干雌(大部为无翅胎生雌蚜)发生盛期在4月下旬;三代孤雌胎生蚜(大部为有翅胎生雌蚜)发生盛期在5月中旬;四代越夏滞育型蚜发生盛期为5月中旬;五代有、无翅性蚜发生盛期为10月下旬~11月上旬;产卵盛期为11月中、下旬。1~3代的单蚜繁殖量平均14~25头,成活期平均20~26天。防治适期用辛硫磷、久效磷、氧化乐果等农药,采用喷雾及涂茎法,均收到良好效果。
Periphyllus koelrcutoriae (Takahashi) occurs 5 generations a year and overwinters with eggs. The first generation of dry stems occurs in late March to early April; the second generation of dry herds (most of them are wingless viviparous female aphids) peaked in late April; three generations of parthenogenetic green aphids (most of them have viviparous females Aphids) peak occurred in mid-May; four generations of summer diapause aphids peak occurs in mid-May; five generations have, wing-free aphid bloom period from late October to early November; spawning peak Mid-November, late. The aphids propagated from 1 to 3 generations on average had an average of 14 to 25 heads and the average survival time was 20 to 26 days. Prevention and control with phoxim, monocrotophos, omethoate and other pesticides, the use of spray and coating stem method, have received good results.