云南东川桉树枝瘿姬小蜂危害调查

Damage Investigation of Leptocybe invasa Fisher & La Salle in Dongchuan District in Yunnan Province

[目的]了解云南东川桉树枝瘿姬小蜂的危害情况。[方法]针对桉树枝瘿姬小蜂对云南省昆明市东川区赤桉的危害进行了调查。[结果]调查地赤桉萌条受桉树枝瘿姬小蜂危害较严重的植株数占调查总株树的比重超过56%。调查植株的受害程度与其胸径、树高和材积存在一定的负相关关系。对桉树枝瘿姬小蜂在东川赤桉苗上的种群动态进行了8个月的调查,4月的虫瘿数量最高。[结论]调查结果为今后的桉树枝瘿姬小蜂防控提供了理论依据。

[Objective] The aim was to understand damage of Leptocybe invasa Fisher La Salle in Dongchuan District in Yunnan Province.[Method]We investigated the damage of Leptocybe invasa Fisher La Salle on Eucalyptus camaldulensis in Dongchuan District.[Result]The damage rate of the shoots on Eucalyptus camaldulensis was more than 56%.The negative correlation was also found between plant damage and diameter at breast height to height or volume.The population dynamics of Leptocybe invasa Fisher La Salle on Eucalyptus camaldulensis in Dongchuan District from October 2015 to May 2016 were studied,and gall numbers were the highest in April.[Conclusion]The survey results will provide reference for the theoretical basis for the future prevention and control.