核桃腐烂病研究进展

Progress of Researches on the Canker Disease of Walnut

核桃腐烂病是危害核桃树枝干树皮的一种严重病害,病原菌以菌丝体或分生孢子器在病部越冬,翌年产生分生孢子,借风、雨水和昆虫等传播,春秋两季为发病高峰期,空气湿度大时,产生大量分生孢子,进行多次侵染危害,给核桃产业发展造成了严重危害。本文就核桃腐烂病的病原、寄主及发病症状、致病因素及防治方法等进行综述,以期为进一步防治该病提供参考。

Walnut canker disease has become one of important diseases which injury bark of walnut branches.The fungi overwinters at the disease part in mycelia or pycnidia.In the spring, conidiospore emergence, which spread with the aid of wind, rain and insects.The disease occurs mainly in the spring and autumn.Large amount of conidiospore are released when the air humidity is heavy.It may infect several times in a year, so it do serous harm to the development of walnut production.In this paper, the pathogens, host, pathogenic factors and the measures of prevention of walnut canker disease were reviewed.This will provide reference for further prevention of this disease.