柑橘黄龙病的传播介体-柑橘木虱在广东果园的发生调查

柑橘木虱是重要害虫也是柑橘黄龙病的传播介体,因此调查木虱发生动态及其携带黄龙病菌的情况对指导黄龙病的防控有重要意义。本研究调查了广东多个果园的黄龙病发病情况,观察了柑橘木虱的生物学特性,统计了柑橘木虱在不同月份的发生数量,检测了木虱携带黄龙病菌情况。结果发现:失管果园中,黄龙病发病严重且木虱数量大,已成为散播病害的重要源头,而与失管果园保持一定距离且加强木虱防控可减轻黄龙病危害;还发现:广东地区6月份柑橘木虱种群已有一定数量,7、8月,其种群数量再次攀升,到了9、10月份,种群数量保持在高位。11、12月间,种群数量快速下降。最后根据本研究的调查结果,提出了一些加强黄龙病防控的措施。

Occurrence of Huanglongbing disease and its vector-citrus psylla in citrus orchard of Guangdong Province

Citrus psylla is an important pest and a vector of Huanglongbing. The investigation on the occurrence of the pest will be helpful for the control of Huanglongbing. The results of investigations in the citrus orchards of Guangdong Province showed that the occurrence of Huanglongbing was very serious and citrus psylla was large in quantity in the orchards without control. Keeping a certain distance to the orchards without control and strengthening the management against citrus psylla could reduce the harm of Huanglongbing. The populations of psyllids reached a certain number in June, increased in July and August, continued to grow in September and October, and decreased rapidly in November and December. Five suggestions on the control of Huanglongbing were also put forward in this paper.