甘肃平凉苹果树腐烂病发生及防治现状调查

苹果树腐烂病是发生范围广、难根治的常见病害，了解平凉市苹果树腐烂病的发生规律及防治现状，并提出平凉市苹果树腐烂病绿色措施，为当地苹果园腐烂病防治和苹果产业健康发展提供参考。于2020—2021年对平凉市崆峒区、静宁县、庄浪县、泾川县、灵台县和崇信县6个县区22个乡镇的89个苹果园进行了苹果树腐烂病发生及防治情况调查。结果表明，在所调查的2 225株苹果树中，苹果树腐烂病总体发病率达39.64%，其中庄浪县的果园的苹果树腐烂病发病率最高，为45.60%；崇信县的果园的苹果树腐烂病发病率最低，为27.00%。随着果树树龄的增大，苹果树腐烂病发病率提高，4～10年生苹果树的腐烂病发病率为11.56%,11～15年生苹果树的腐烂病发病率19.43%,15～20年生苹果树的腐烂病发病率为52.46%,20～25年生苹果树的腐烂病发病率64.50%。不同生态区苹果树腐烂病发生有明显差异。

Investigation Report on the Occurrence and Control Status of Apple Canker in Pingliang City,Gansu Province

Apple canker is a common disease with wide occurrence scope and high level of radical cure. To understand the occurrence and prevention status of apple canker in Pingliang and to provide sustainable measures for it so that references regarding the control of apple canker and healthy development of apple industry could be provided, the occurrence and prevention status of apple canker were investigated in 89 orchards located in 22 townships of 6 counties of Pingliang City including Kongtong District, Jingning County, Zhuanglang County, Jingchuan County, Lingtai County and Chongxin County in 2020 and 2021. Results showed that the general incidence rate of apple canker was 39.64% in 2 225 apple trees investigated. The incidence of Zhuanglang County was the highest(45.60%), and Chongxin County was the lowest(27.00%). With the increase of trees age, the incident rate raised, the disease incidence for 4 to 10-yearold trees, 11 to 15-yearold trees, 15 to 20-yearold treesand 20 to 25-yearold trees were 11.56%, 19.43%, 52.46% and 64.50%, respectively. Significant differences were detected in apple canker occurrence from different ecological regions.