刺槐叶瘿蚊老熟幼虫的空间分布及第1代幼虫对叶片的危害规律

Spatial Distribution of Obolodiplosis robiniae Mature Larva and Damage Regularity of Its First Generation Larvae on Leaves of Robinia pseudoacacia

[目的]揭示刺槐叶瘿蚊[Obolodiplosis robiniae(Haldemann)]的种群动态。[方法]在北京房山区对刺槐叶瘿蚊老熟幼虫的空间分布及第1代幼虫对刺槐叶片的危害规律进行了研究。[结果]刺槐叶瘿蚊老熟幼虫水平方向分布林内数量显著高于林缘和林缘外围。第1代幼虫主要集中在树冠下部危害。[结论]为有效控制该虫的危害提供了理论依据。

[Objective] The aim was to reveal the population dynamics of Obolodiplosis robiniae（Haldemann）.[Method] The spatial distribution of O.robiniae mature larvae and the damage regularity of its first larvae on leaves of Robinia pseudoacacia were studied in Fangshan District,Beijing.[Result] The spatial distribution of O.robiniae mature larvae in the forest was significantly higher than those in the edge and the periphery of edge.The attack of the first generation larvae was mainly concentrated in the crown of lower part.[Conclusion] The research result provides theoretical basis for the effective control of O.robiniae.