文献类型：期刊文献

中文题名：当归茎线虫病田间分布型及抽样技术研究

英文题名：Spatial pattern of angelica root rot and its sampling techniques

作者：柴兆祥[1];李金花[1];李应东[2];丁峰[1]

第一作者：柴兆祥

机构：[1]甘肃省农业大学植物保护系;[2]甘肃中医学院

第一机构：甘肃省农业大学植物保护系

年份：2004

卷号：30

期号：3

起止页码：59

中文期刊名：植物保护

外文期刊名：Plant Protection

收录：CSTPCD;;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：甘肃省科技顶项目(甘科计[2001]21号)国家科技部"九五"攻关项目(99-929-01-37)

语种：中文

中文关键词：植物病理学;当归茎线虫病;田间分布型;抽样技术

外文关键词：phytopathology;angelica root rot;spatial pattern;sampling techniques

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。
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.