为探讨新疆叶城县核桃树腐烂病的发生情况以及明确影响病害发生的相关因子,于2012－2014年连续对叶城县不同类型的核桃树腐烂病样地进行定点定时调查分析.结果显示,核桃树腐烂病病斑于每年5月初开始扩展,8月中旬为发生高峰期；病害发生的非环境相关因子调查分析发现,该病害的发展与果园栽植密度、胸径、间作模式、病斑部位有显著的相关性(P ＜0．05).由非环境相关因子生态数学模型可以得出,与病斑扩展关系最大的因子是胸径,其次是密度.结果证明,核桃树腐烂病的发病程度是多种因子长期综合作用的结果,主导非环境因子为胸径,其次是栽植密度.研究结果对叶城县核桃树腐烂病的防控提供理论依据.%To discuss the occurrence of walnut canker in Yecheng County and understand the correlation factors of different walnut cankers occurrence,the sampling fields of walnut cankers were investigated and analyzed from 2012 to 2014.The results showed that the scab of walnut cankers were developed at the be-ginning of May,there was the peak hour developed at the middle ten days of Aug.;According to investiga-tion and analysis for correlation factors of non-invironment,where walnut canker developed,it was found that the development of walnut canker had significant correlation with planting density,diameter,inter-cropping model,scab position in the garden (P <0.05).A conclusion can be drawn from eco-mathematical model of non-environmental factors:the diameter at breast heigh was the greatest factor concernign with the development of scab,followed by the density.The results indicated that occurrence of walnut disease had relations with various factors.The leading non-environmental factor were diameter at breast height,fol-lowed by planting density.The drawn results in the tests can provide theoretical basis for controlling wal-nut canker in Yecheng County,Xinj iang.
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