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咖啡黑点木蠹蛾以幼虫蛀害林木枝条,使幼干、树枝枯死风折。幼树顶梢被害后,树木向上生长受阻,致使树干矮小、弯曲,降低木材使用价值。徐州地区林木于1964年始见其为害,至1976年已发展得相当严重,1978年调查淮阴、徐州二地区刺槐及枫杨人工林,被害株率高达93％,果园和城市行道树的被害情况也很严重。 1977-1978年我们在江苏省东海县马陵山果园、西山林场以林间调查和室内饲养相结合的方法,对该虫进行了观察和试验,现将结果整理报道如下:
Coffee black spots of codling moth infestation of larvae forest branches, so young, branches blight folding. After the shoots of young trees were killed, the growth of the trees was hindered. As a result, the trunk was short and curved, reducing the value of wood use. In 1964, trees in Xuzhou saw its damage, and it was quite serious in 1976. In 1978, Huaiyin and Xuzhou robinia pseudoacacia and Populus simonii plantations were surveyed, and the rate of the damaged plants was as high as 93%. The orchard and the urban road trees were also very victims serious. From 1977 to 1978, we observed and tested the pest in the Malingshan orchards and Xishan Forest Farm in Donghai County, Jiangsu Province by means of forest surveys and indoor feeding. The results are reported as follows: