| 当归茎线虫病田间分布型及抽样技术研究 |
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| 引用本文： | 柴兆祥,李金花,李应东,丁峰.当归茎线虫病田间分布型及抽样技术研究[J].植物保护,2004,30(3):59-61. |
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| 作者姓名： | 柴兆祥 李金花 李应东 丁峰 |
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| 作者单位： | 1. 甘肃省农业大学植物保护系,兰州,730070
2. 甘肃中医学院,兰州,730000 |
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| 基金项目： | 甘肃省科技项目，科技部科技攻关项目 |
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| 摘 要： | 为提高当归茎线虫病(Ditylenchus destructor)田间抽样的准确度,用7种聚集指标判断了当归茎线虫病的田间分布型.结果表明,当归茎线虫病在田间呈聚集分布,其中奈曼分布(核心分布)的适合率为100%,嵌纹分布(负二项分布)的适合率为77.8%.理论抽样数量约820株.4种抽样方法差异均不显著,在保证抽样数量合理的情况下,4种方法均可采用.
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| 关 键 词： | 植物病理学 当归茎线虫病 田间分布型 抽样技术 |
| 修稿时间： | 2003年9月30日 |
Spatial pattern of angelica root rot and its sampling techniques |
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| CHAI Zhao-xiang;LI Jin-hua;LI Ying-dong;DING Feng.Spatial pattern of angelica root rot and its sampling techniques[J].Plant Protection,2004,30(3):59-61. |
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| Authors: | CHAI Zhao-xiang;LI Jin-hua;LI Ying-dong;DING Feng |
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| Institution: | 1.Plant Protection Department of Gansu Agricultural University;Lanzhou 730070;China; 2.Traditional Chinese Medical College of Gansu;Lanzhou 730000;China |
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| Abstract: | The epidemic rule of angelica root rot, Ditylenchus destructor, was studied so as to forecast its occurrance precisely and provide reasonable sampling techniques and theoretical sample size. The seven aggregation indices were used to analyze the spatial pattern of the disease in fields. The spatial pattern of the disease was negative binomial bution with the optimum rates as 100% and 77.8% , respectively. The theoretical sample size was about 820 and positively relative to infection rate. Five-point sampling technique was resonable, simple and convenient for investigating the disease. The optimum sample size was about 820. |
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| Keywords: | phytopathology angelica root rot spatial pattern sampling techniques |
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