| 王军辉,王宏勋,张津津.蛀干期3 种切梢小蠹不同种群数量及其在树干分布研究[J].林业调查规划,2025,50(3):136-141 |
| 蛀干期3 种切梢小蠹不同种群数量及其在树干分布研究 |
| Different Population Sizes of Three Tomicus Species andTheir Distribution in Trunks During the Boring Stage |
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| DOI： |
| 中文关键词: 云南松 切梢小蠹 蛀干期 种群数量 分布特征 |
| 英文关键词: Pinus yunnanensis Tomicus boring stage population size distribution characteristics |
| 基金项目:教育部产学合作协同育人项目(230804092051354);山东理工大学科技博士启动项目(4041/416049). |
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| 中文摘要: |
| 切梢小蠹是危害云南松的主要害虫种类之一,发生在云南地区的横坑切梢小蠹、云南切梢小
蠹和短毛切梢小蠹,已造成大量松树的死亡。通过研究蛀干期3 种切梢小蠹在云南松树干的种群数量及空间分布,以掌握其分布和危害特点,将蛀干期刚被入侵为害的云南松树干截成长50 cm的木段,解剖并记录每段木段上的切梢小蠹种类和数量。结果表明,玉溪市采集到横坑切梢小蠹的数
量占总数量的89.5%,整个树干均有分布,云南切梢小蠹数量占总数量的10.5%,主要分布在树干的中上部。建水县采集到横坑切梢小蠹的数量占比为58.5%,分布于树干的中下部,云南切梢小蠹的数量占比为41.5%,且在整个树干均有分布。安宁市采集到横坑切梢小蠹、云南切梢小蠹和短毛切梢小蠹的数量占比分别为31.6%、31.8%和36.6%,主要分布于树干的中下部、中上部及整
个树干。3 个地区的3 种切梢小蠹,在树干相同高度分布的同种切梢小蠹,其雌虫、雄虫在数量上
无显著差异。云南地区蛀干期3 种切梢小蠹种群数量在树干分布情况随着地区不同而不同,在云
南松树干的空间分布与其发生数量有着密切关系,这为不同地区针对不同切梢小蠹种类而制定不
同的防治措施提供了参考。 |
| 英文摘要: |
| Tomicus is one of the main pest species that infest Pinus yunnanensis. In Yunnan Province,
Tomicus minor, Tomicus yunnanensis, and Tomicus brevipilosus have caused extensive mortality of pine
trees. This study investigated the population sizes and spatial distribution of these three Tomicus species
in Pinus yunnanensis trunks during the boring stage to understand their infestation patterns. Newly infested Pinus yunnanensis trunks were cut into 50 cm segments, dissected, and the species and quantities of
Tomicus beetles in each segment were recorded. The results showed that in Yuxi, Tomicus minor accounted
for 89.5% of the total population and was distributed throughout the trunk, while Tomicus yunnanensis
accounted for 10.5% and was mainly found in the middle-upper sections. In Jianshui County, Tomicus
minor made up 58.5% of the population and was distributed in the middle-lower trunk, whereas Tomicus
yunnanensis accounted for 41. 5% and was found throughout the trunk. In Anning City, Tomicus minor,
Tomicus yunnanensis and Tomicus brevipilosus accounted for 31.6%, 31.8% and 36.6% of the population,
respectively, primarily distributed in the middle-lower, middle-upper, and entire trunk sections.
For all three species across the three regions, there was no significant difference in the numbers of males
and females at the same trunk height. The distribution patterns of the three Tomicus species during the
boring stage varied by region, and their spatial distribution in Pinus yunnanensis trunks was closely related
to their population size. These findings provide a reference for developing region-specific prevention
strategies against different Tomicus species. |
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