梨树锈病病斑在叶片上的空间分布型及抽样技术  

Spatial Distribution Pattern and Sampling Method of Pear Rust Spot on Leaves

作　　者：郑义 段显德[2] 崔欣 孙悦 杨信东[3] 

机构地区：[1]长春科技学院,长春130600 [2]辽东学院农学院 [3]吉林农业大学

出　　处：《东北林业大学学报》2013年第12期80-83,共4页Journal of Northeast Forestry University

基　　金：国家自然科学基金项目(30600003)

摘　　要：梨树锈病病斑在叶片上的空间分布型为聚集分布,分布的基本成分是个体群。梨树锈病的理论抽样数研究结果表明：获得较为精确的调查结果,在常见的发病条件下（每个叶片上的病斑数1~5个）,需调查1 600~2 600个叶片;获得大体精确的调查结果,在常见的发病条件下（每个叶片上的病斑数1~5个）,需调查200~300个叶片;制定了指导防治工作的序贯抽样检索表。Pear tree leaf samples with rust spot disease were collected in Changchun,Jilin Province. The spatial distribution of the pear rust spot is in a pattern of aggregated distribution and the basic component of distribution is in individual group. The field survey results show that under normal disease condition 1 600-2 600 leaf samples（ 1-5 rust spots per leaf） are required to analyze data with relatively high precision,and 200-300 leaf samples（ 1-5 rust spots per leaf） are required to analyze data with relatively low precision. The sequential sampling search table can be used to control the disease.

关 键 词：梨树 锈病 空间分布型 理论抽样数 序贯抽样检索表 

分 类 号：S763.7[农业科学—森林保护学]