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幼龄松树的顶枝枯损、弯曲,以及树干倾斜是人们常遇到的最严重的问题之一,这些现象有时发生在人工林或公园里的七至十年生的幼龄林分中。它们的病因常难发现,其一就是一种小幼虫——欧松梢卷叶蛾在做崇。这种昆虫分布很广,遍布全英国,北到苏格兰南部,东达日本及亚州的部分。地区。欧松梢卷叶蛾是在本世纪初传到北美的,现在已成为许多国家的害
One of the most serious problems commonly encountered is the loss, bending, and tilting of the top branches of young pine trees, which sometimes occur in plantations or in young or young stands of parks, 10 to 10 years old. Their etiology is often difficult to detect, one of which is a small larvae - Pinus taiwanensis is worshiping. The insects are widely distributed throughout the United Kingdom, north to southern Scotland, East Japan and Asia part. area. The Pinus thunbergii leaf-roll moth was spread to North America at the beginning of this century and has now become a victim of many countries