| 云杉落针病空间分布型及抽样技术的研究 |
| |
| 引用本文： | 薛定刚,刘江林.云杉落针病空间分布型及抽样技术的研究[J].林业科技,2005,30(6):21-23. |
| |
| 作者姓名： | 薛定刚 刘江林 |
| |
| 作者单位： | 甘肃省白龙江林管局迭部林业局,迭部,747401 |
| |
| 摘 要： | 应用聚集度指标法对云杉落针病空间分布型的研究结果表明，其空间分布型为聚集分布中的负二项分布，分布的基本成分为致密的个体群，聚集强度因种群密度的升高而增加。林地抽样方法比较结果表明，以平行线法取样精度较高，适用于苗圃病情调查，并计算了病害调查的最适抽样数以及序贯抽样决策模型。
|
| 关 键 词： | 云杉落针病 感病株数 空间分布型 抽样方法 |
| 文章编号： | 1001-9499（2005）06-0021-03 |
| 收稿时间： | 2005-08-22 |
| 修稿时间： | 2005年8月22日 |
Research on the Space Distributing Type of Lophodermium piceae and the Sampling Technique |
| |
| XUE Dinggang,.Research on the Space Distributing Type of Lophodermium piceae and the Sampling Technique[J].Forestry Science & Technology,2005,30(6):21-23. |
| |
| Authors: | XUE Dinggang |
| |
| Institution: | Forestry Administrative Bureau of Bailongjiang , Gansu Diebu 747401 |
| |
| Abstract: | In this article, the space distributing make the gathering degree as the standard. The type of Lophodermium piceae is investigated. We result shows that the space distributing type is the minus binomial distribution in gathering distribution. The basic factors of the distribution are compact individuals, and the gathering degree increases as the density of different kinds become heavier. Sampling as the parallel, which is suitable for the disease investigation of nursery, is the most precise one of all. The quantity of most suitable sampling and the sampling making are calculated. |
| |
| Keywords: | Quantity of infected plants Space distributing type Sampling survey |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
