楸梢螟,又叫梓野螟蛾,属鳞翅目螟蛾科。 楸梢螟是为害楸树、梓树的主要害虫,在我场已发生多年。其为害特点,大树受害稍轻,小树较重,特别是生长旺盛者更易受害。去年我们利用嫁接法扩大楸树繁殖,当年楸苗生长旺盛,最高者3.19米,但楸梢螟的为害使受害株率几乎达100％。楸梢螟以幼虫为害嫩茎和枝梢的髓部,苗木被害后,高生长严重受阻,被害部位常呈瘤状隆起,里边充满虫粪,伤口不易愈合,往往招致菌类寄生和被风折断。为保护林木资沅,去年我们对楸梢螟进行了初步观察和防治试验,观总结如下。 Catalpa shoot tip borer, also known as Zi wild moth, Lepidoptera Pyralidae. Cataplexia borer is the main catastrophe catalpa, Catalpa tree, in my field has occurred for many years. Its harmful characteristics, trees suffer slightly lighter, trees heavier, especially those who grow more vulnerable. Last year we used the method of grafting to increase Catalpa bungei propagation, when the Catalpa bungei grew vigorously, with the highest being 3.19 m. However, the damage caused by the bamboo shoot borer was almost 100%. Catalpa tipper larvae damage to the stems and shoots of the pith, nursery stock after the high growth was severely blocked, the site of the tumor was often protuberant uplift, which is full of insect manure, the wound is not easy to heal, often lead to fungus parasites and was broken by the wind. In order to protect the forest resource Yuan, last year, we conducted a preliminary observation and prevention and control experiment on the bamboo shoot tip. The conclusion is as follows.