|
|||||
|
|
| 萧氏松茎象幼虫的空间分布型和抽样技术 | |
| 引用本文： | 温小遂,施明清,叶萌,罗永松,张敬皆,邓荣林.萧氏松茎象幼虫的空间分布型和抽样技术[J].昆虫知识,2003,40(6):556-560. |
| 作者姓名： | 温小遂 施明清 叶萌 罗永松 张敬皆 邓荣林 |
| 作者单位： | 1. 江西省森林病虫害防治站,南昌,330077 2. 赣州市森林病虫害防治站,赣州,341000 3. 永修县森林病虫害防治站,永修,330300 4. 上犹县森林病虫害防治站,上犹,341200 |
| 基金项目： | 国家林业局“萧氏松茎象系统控制技术区试”项目的部分内容 |
| 摘 要： | 萧氏松茎象Hylobitelus xiaoi Zhang是我国近年来发现的危害松林的新害虫。该文利用1wao等7种方法对萧氏松茎象幼虫的空间分布型进行了测定。结果表明，萧氏松茎象幼虫在林间呈聚集分布，且符合负二项分布，由此得出了林间理论抽样数公式，其抽样方式以对角线最佳；其有虫株率与平均虫口密度之间的关系可用冥函数曲线方程：Y=2．916X^0.887来进行描述。 |
| 关 键 词： | 萧氏松茎象 空间分布型 抽样技术 幼虫 松林害虫 |
| 修稿时间： | 2002年11月20 |
Spatial patterns of Hylobitelus xiaoi larvae and their sampling methods |
|
| WEN Xiao Sui,SHI Ming Qing,YE Meng.Spatial patterns of Hylobitelus xiaoi larvae and their sampling methods[J].Entomological Knowledge,2003,40(6):556-560. | |
| Authors: | WEN Xiao Sui SHI Ming Qing YE Meng |
| Abstract: | Seven methods were used to determine the larval spatial pattern of Hylobitelus xiaoi Zhang in Pinus elliottii Engelm. The results showed that the spatial pattern fitted the negative binomial series and the larvae had a clumped spatial distribution. The formula for determining the optimun theoretical sampling number is provided. The average errors of several sampling methods for sampling larval populations in the field were compared, and the single diagonal method was the best. There was a significant relationship between the rate of infested pine trees( X ) and mean larval density( Y ), which can be described by the equation: Y=2 916X 0 887 . |
| Keywords: | Hylobitelus xiaoi Zhang spatial pattern sampling method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |