• 温湿度也是影响大小蠹发生轻重主要因子之一。

    Temperature and humidity also affect the activity of the red turpentine beetles.

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  • 红脂大小蠹我国一种危害油松等松树外来入侵物种

    Dendroctonus valens is a dangerous insect pest of several pine species in China.

    youdao

  • 采用标准地调查单株调查方法研究了大小蠹发生和危害规律

    The generation and damage regulation of red turpentine beetle (Dendroctonus valens) are studied with the method of sample plot and tree-by-tree survey.

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  • 营造混交林加强林木管理控制源、引进保护和利用天敌控制红脂大小蠹有效措施

    The pest's controls, such as mixed forest, forest tree management, or introduction and protection of its natural enemy, are effective measures.

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  • 大小蠹寄生树木伐桩有分层抽样必要及其空间分布格局经拟合项聚集分布

    It is necessity that stratified sampling is used to investigate to the trees and the new stumps, and the spatial distributing pattern of the red turpentine beetles was Negative Binomial Distribution.

    youdao

  • 大小蠹林木害虫中危害严重一个类群,全部种类经济,均可以直接造成林木资源巨大损失

    Dendroctonus is one group of most serious forest pests, all of which are economic species, and could directly cause great losses of forest resources.

    youdao

  • 报道危害中国秦岭华山松华山松大小蠹相关真菌新种描述了其有性阶段无性阶段的形态特征。研究标本保存于西北农林科技大学。

    During a recent survey of fungi associated with bark beetle in Qinling Mountains of China, a new species was isolated, and the aim of this study was to describe this fungus.

    youdao

  • 报道危害中国秦岭华山松华山松大小蠹相关真菌新种描述了其有性阶段无性阶段的形态特征。研究标本保存于西北农林科技大学。

    During a recent survey of fungi associated with bark beetle in Qinling Mountains of China, a new species was isolated, and the aim of this study was to describe this fungus.

    youdao

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