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棉田十一星瓢虫种群动态及空间分布

Population Dynamics and Spatial Distribution of Eleven Lady

摘要:

通过田间系统调查,对棉田十一星瓢虫CoccinellaundecimpanctataL.种群动态及空间分布方面进行研究,探明捕食性天敌十一星瓢虫各虫态在南疆棉区的种群消长趋势,分析表明该虫4种虫态在棉田中均为聚集分布,成虫、幼虫和蛹的聚集原因主要是由棉蚜密度等引起,而其卵的聚集主要是由于其习性及环境因素引起。

Abstract:

Through the field investigation, the population dynamics and spatial distribution of Coccinellaundecimpanctata L. in cotton field were studied, and the trend of population decline of each insect population in the southern cotton area was studied. The results showed that the insect The four insect states were aggregated in cotton fields. The accumulation of adults, larvae and pupae was mainly caused by the density of cotton aphids. The aggregation of eggs was mainly caused by their habitat and environmental factors.

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