棉蚜在棉田的空间分布型研究

Spacial Distribution of Aphis gossypii Glover in Cotton Fields

棉蚜是为害棉花的重要害虫之一。近年来棉花蕾铃期的伏蚜为害加重,给棉花生产造成巨大损失。了解棉蚜在棉田的空间分布可以为防治棉蚜提供科学依据。为此本文进行了棉田棉蚜种群分布调查,并采用聚集度指标法、Iwao回归分析法、Taylor幂法测定。结果表明,棉蚜在棉田的空间分布是聚集型的。

Cotton aphis,Aphis gossypii,is one of major cotton pests.In recent years,Aphis gossypii in summer damaged cotton squares and bolls,and resulted in great lost in cotton production.Spatial distribution of cotton aphis could provide a scientific basis for its field control.The population distribution of Aphis gossypii was investigated in this paper.By using aggregation index,Iwao’s regression analysis,and Taylor’s power-determination,the results showed that Aphis gossypii was congregation distribution in the cotton fields.