研究结果表明,其方法可以准确地预测越冬代玉米螟的产卵期。
The result of the study has shown that the method in this paper can forecast accurately the spawning time of corn borer of overwintering generations.
蚕种场桑螟防治策略为:主要做好越冬代桑螟防治和清理工作。
The most importance of control mulberry pyralid in silkworm egg producing farms was to control and clear the over winter generation.
草地螟在长沙地区草坪越冬基数很小,在长沙地区为害的多为外地迁入的虫源,为害程度主要取决于异地越冬代成虫迁入量的多少。
The over-winter cardinal number of meadow moth was very small in lawn in Changsha area, and they were a number of meadow moths coming from other places, not from the Changsha area.
在我省一年发生一代,以虫茧在土中越夏越冬,长达10个多月。
It has one generation a year and over wintering and spending summer in the form of cocoon in soil for of more than 10 months.
该虫在四川省卧龙自然保护区一年发生两代,通常以蛹越冬。
In general, it has two generations per year in Wolong Reserve, Sichuan Province. It hibernates in pupal stage.
大叶黄杨尺蠖在上海一年发生三代,但在室内饲育可完成四代,以蛹在土中越冬。
Investigations in Shanghai reveal that three generation of euonymus geometer occur inthe course of a year, with the pupa surviving the winter underground.
在上海一年发生三代,以滞育幼虫在蒜头和枯棉铃组织内越冬。
It has three generations a year in Shanghai and overwinters asa diapaused larva in the head of the garlic and the dead cotton boll.
挨得过严冬,这些越冬的蝴蝶就可以在春天北飞回繁殖地繁衍下一代。
Only those survive the winter are able to produce their offsprings in the coming spring back in the north.
挨得过严冬,这些越冬的蝴蝶就可以在春天北飞回繁殖地繁衍下一代。
Only those survive the winter are able to produce their offsprings in the coming spring back in the north.
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