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为了了解我国山东西北部地区温室大棚内外烟粉虱越冬情况,我们于2015年1月份在禹城2种不同控温方式温室大棚(高温棚和低温棚)内番茄植株上和温室大棚内外杂草上调查了烟粉虱的越冬状况。结果表明,在该地区低温棚内烟粉虱以卵和伪蛹越冬,在温室大棚内外杂草上未发现烟粉虱;在高温棚内,烟粉虱各个虫态都有发现,在高温棚内外的杂草上也发现一些烟粉虱成虫。低温大棚内烟粉虱以卵和伪蛹越冬,这一结果暗示了烟粉虱的卵和伪蛹比成虫和若虫阶段有更强的抗寒能力;另一方面推测在露地上,该虫在1月份4℃等温线左右以北还有一个以卵和伪蛹越冬的区域。此外,高温大棚外杂草上发现烟粉虱成虫,说明烟粉虱在冬季也具有扩散能力。
In order to understand the overwintering of whiteflies in greenhouses in northwestern Shandong Province in our country, in January 2015, we planted tomato plants on both tomato plants and in greenhouses in two different temperature control methods On the survey of whitefly overwintering conditions. The results showed that B. tabaci overwintered in eggs and pupal pupae in the low-temperature greenhouse in the area, and no whiteflies were found on the weeds in the greenhouse and in the weeds. In the high-temperature shed, all the insect pests of B. tabaci were found, Some Bemisia adults were also found on weeds both inside and outside. Bemisia tabaci overwintering in eggs and pupal pupae in a low-temperature greenhouse suggested that the eggs and pupal pupae of B. tabaci had stronger resistance to cold than adults and nymphs. On the other hand, it was presumed that in the open field, January 4 ℃ isotherm north of about a north and there are eggs and pupal wintering areas. In addition, adults of Bemisia tabaci were found on the weeds outside the high-temperature greenhouse, indicating that Bemisia tabaci also has diffusibility in winter.