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烟草甲在安徽一年发生2~3代,主要以高、中龄幼虫越冬,越冬代成虫高峰期为5月下旬。7月下旬至9月下旬为第1、2代成虫混合盛发期。第1代卵、幼虫和蛹的平均历期分别为7.5、58和4d;第2代卵、幼虫和蛹的平均历期分别为5.2、52和6d。另外,烟草甲在年生活史中可分为4个时期:入冬期——各虫态转为以幼虫虫态为主,发育速度逐渐变慢;冬眠期——低温引起发育停滞,死亡率大;复苏期——越冬幼虫恢复发育,后期各虫态混发;盛发期——各虫态呈高虫口密度。
Tobacco a occurs in Anhui for 2 to 3 generations a year, mainly in high, middle-aged larva overwintering, overwintering adult peak in late May. Late July to late September for the first and second generations of mixed mixed Sheng period. The average length of eggs, larvae and pupae of the first generation were 7.5, 58 and 4 days, respectively. The average length of the second generation eggs, larvae and pupae was 5.2, 52 and 6 days, respectively. In addition, the tobacco A in the history of life can be divided into four periods: into the winter - the worm state to larvae-based state, the development rate becomes slower; hibernation - hypothermia caused by stagnation, the mortality rate During the recovery period, the overwintering larvae recovered and developed, and the latter were mixed with each other;