梨眼天牛的生物学特性观察及其防治

梨眼天牛(Bacchisa Fortunei)在宁夏彭阳2 a发生1代,以老熟幼虫在枝条内越冬,以幼虫危害本质部、韧皮部。翌年4月上旬开始危害,5月下旬至6月上中旬成虫羽化、交配、产卵。幼虫孵化后在皮下取食危害。对该虫可采用捕捉成虫、刮除虫卵、用铁丝刺杀幼虫、虫道注药的方法防治。掌握了该害虫的生活史、生活习性、危害症状,为准确、有效防治提供了科学依据。

Observation for Biological Characteristics and Control of Bacchisa fortunei

It takes 2a as a life cycle for Bacchisa fortunei in Pengyang County,Ningxia Automation,China.B.fortunei lives through winter in host branches in the aged larval stage and does harm to the xylem and phloem of host plant simultaneously.It courses damages from April until late May or early June next year for eclosion,mating and oviposition.It damages host plant by feeding under barks after eclosion and could be controlled by capturing insects,scraping eggs,killing larvae using iron thread,and injecting drugs into caves of insects at al.The life history and habit of the insect as well as damage symptoms were got,which supplies science references to improve efficiencies and accuracies to control.