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为了保护天麻(Gastrodia elataBl.)的安全生产和麻农的经济效益,为后续防治工作提供科学依据,研究了危害天麻新害虫——天麻蚜蝇Azpeytia shirakii Hurkmans的危害特征、虫口密度、连作与未连作麻窖中天麻受害情况和天麻球茎不同生长发育阶段受害情况。结果表明:天麻蚜蝇幼虫多从天麻球茎的幼嫩生长点或新生麻部蛀入,被害天麻球茎表面可明显地观察到蛀眼,解剖天麻的球茎发现1个天麻内一般有1～3条蛀道,蛀道直径达5～8mm;在1m2麻窖内虫口密度可达38～50头;天麻被危害率(约等于损失率)为20%以上;连作与未连作麻窖中天麻的被危害率之间存在极显著性差异(P<0.01)。并提出了相应的防治建议。
In order to protect the safety of Gastrodia elataBl. And the economic benefits of hemp farming, provide a scientific basis for the follow-up prevention and control work and study the harmful characteristics of Azpeytia shirakii Hurkmans, a new pest of Gastrodia elata Even as a nursery in the nursery Tianma damage and the occurrence of corms bulbous Gastrodia at different stages of growth and development of victims. The results showed that most of the larvae of A. tumefaciens flies from the young growth point of the gastrodhoma bulb or the newborn hemp, and the eyeballs can be obviously observed on the corms of the infected Tianma turmeric. One to three Tunnels, the tunnel diameter of 5 ~ 8mm; in 1m2 cellar pit population density up to 38 to 50; gastrodia endangered rate (about the same as the loss rate) of 20% or more; There was a significant difference between the hazard rates (P <0.01). And put forward the corresponding prevention and cure suggestion.