山西梨树腐烂病发病情况调查  

Investigation on the Occurrence of Pear Valsa canker in Shanxi Province

作　　者：白牡丹[1] 郝国伟[1] 张晓伟[1] 杨盛[1] 高鹏[1] 郭黄萍[1] 

机构地区：[1]山西省农业科学院果树研究所,果树种质创制和利用山西省重点实验室,山西太原030031

出　　处：《山西农业科学》2017年第11期1841-1843,共3页Journal of Shanxi Agricultural Sciences

基　　金：国家现代农业产业技术体系建设专项资金项目(CARS-29-24)

摘　　要：为了摸清山西省梨树腐烂病发生规律,调查了梨树腐烂病在山西省5个梨区的为害情况及其在树体上的分布特点。结果表明,梨树腐烂病在5个梨区普遍发生,在原平和祁县酥梨园较严重,病株率达100%;腐烂病病斑发生方位大多在向阳面,所占比例均高于80%;在原平和祁县酥梨园主干发病率小于分枝发病率,在平遥酥梨园、隰县玉露香梨园和运城红香酥梨园结果与之相反;冻伤或日灼是造成山西梨树腐烂病最主要的因素。To find out the occurrence regularity of pear tree Valsa canker in Shanxi province,the author studied the damage and distribution characteristics of Valsa canker in 5 pear tree growing areas of Shanxi province.The results showed that disease occurrence of Valsa canker was common in 5 pear growing areas,but incidence was 100% in Yuanping and Qixian,which were more seriously.The direction of disease was mainly on the exposed side in 5 pear orchards and the proportion was above 80%.This disease occurred on the trunks were less than branches in pear orchards of Yuanping and Qixian.The result was the opposite in Pingyao,Xixian and Yuncheng.Frostbite or sunburn was the major factors causing pear Valsa canker in Shanxi.

关 键 词：梨树腐烂病 发病率 山西 

分 类 号：S436.612[农业科学—农业昆虫与害虫防治]