【摘要】 棉蚜多以孤雌胎生蚜在室内花卉寄主上越冬,冬季窖藏石榴上的棉蚜卵能正常孵化,1月搭起的蔬菜大棚棉蚜未见发生;秋季至冬前,次生寄主棉田棉杆上的有翅孤雌蚜始终保持一定比例,棉田翻耕后棉杆上棉蚜越冬卵未见存活,而立于地面棉杆上的越冬卵可孵化。下雪前,原生寄主黄金树上有翅孤雌蚜基本消失,春季原生寄主与次生寄主上棉蚜卵的饱满率及其孵化率均较低。更多还原

【Abstract】 Cotton aphids mostly spend the winter by parthenoge ne tic females in flower indoor, which can’t be found in plastic greenhouse set up in January.Overwintering eggs can hatch on pomegranate in cellar. Parthenogeneti c female kept a certain ratio on secondary host cotton the whole autumn, and whi ch disappeared on primary host cataipa spaciosa ward before snowing. The rate of full egg and hatching of overwintering eggs is lower outside. Cotto n aphid eggs were found survivable on cotton stem of being treated by turning up soil and hatching on stem of standing in ground.更多还原