白三叶草病毒病病株空间分布型及抽样技术研究  

Studies on the Spatial Distribution Pattern and Sampling Methodology of Virus Diseased Plant of White Clover

作　　者：梁巧兰[1] 魏列新[1] 徐秉良[1] 

机构地区：[1]甘肃农业大学草业学院/草业生态系统教育部重点实验室(甘肃农业大学)/中-美草地畜牧业可持续发展研究中心/甘肃省草业工程实验室,甘肃兰州730070

出　　处：《中国草地学报》2013年第2期48-51,共4页Chinese Journal of Grassland

基　　金：由草业生态系统教育部重点实验室开放课题(CYZS-2011006)资助(省部级)

摘　　要：采用聚集指标(Iδ、I、M*/M、Ca、C、K)和Iwao回归分析法研究了白三叶草病毒病病株空间分布型,结果表明:白三叶草病毒病病株空间分布型为聚集分布,分布的基本成分为个体群,个体群之间分布是聚集的;分析并确定了在不同病株率下保证抽样质量的理论抽样数。通过对单对角线、W型、双对角线、平行线、Z字型、五点式等六种抽样方法比较,发现平行线抽样方法最好。The spatial distribution pattern of virus diseased plant of white clover was studied with aggregation indices and the Iwao method. The results indicated that the spatial distribution pattern of virus diseased plant of white clover was aggregate distribution and basic distribution components was individual group and its distribution was aggregate. The theoreticaI sampling quantity was determined under the rate of diseased plants. The sampling method of parallel lines was the best compared with the method of parallel lines, Z-size type, W-type, five point style, diagonal type, double diagonal lines.

关 键 词：白三叶草病毒病 空间分布型 抽样技术 

分 类 号：S541[农业科学—作物学]