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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。
In order to investigate the occurrence of walnut tree rot in Yecheng County, Xinjiang and related factors that affect the occurrence of the disease, we conducted continuous investigation and analysis of different types of walnut tree rot samples in Yecheng County from 2012 to 2014. The results showed that the pathogen of walnut tree rot disease began to expand in early May each year and peaked in mid-August. The investigation of the non-environment relevant factors of the disease found that the development of the disease was closely related to the planting density, DBH, intercropping patterns, There was a significant correlation between plaque (P <0.05). According to the ecological mathematical model of non-environmental related factors, the factors that have the most significant relationship with the lesion expansion are the DBH, followed by the density. The results show that the incidence of walnut tree rot disease is the result of a long-term comprehensive effect of many factors, the dominant non-environmental factor is the diameter at breast height, followed by planting density. The results provide a theoretical basis for prevention and control of walnut tree rot disease in Yecheng County.