滇西柠檬园黄龙病及其媒介昆虫的发生情况调查

A Survey of the Occurrence of Huanglongbing and Its Insect Vectors in Lemon Orchards of Western Yunnan

对干、湿热区不同生态环境条件下柠檬园柑橘黄龙病及其媒介昆虫的发生及分布进行调研。结果表明:黄龙病在滇西的干、湿热区均有分布;低海拔地区柑橘黄龙病及亚洲柑橘木虱发生严重;随着海拔的升高,柑橘黄龙病及亚洲柑橘木虱的发生逐渐降低,而柚喀木虱危害逐渐加重,海拔1100 m以上的地区仅观察到柚喀木虱的发生;幼年柠檬果园间种高杆作物或周边有高杆作物遮挡时,果园黄龙病的发生率比清耕的柠檬果园低。幼年果园黄龙病的发生率与周边环境条件和管理水平有关。

A survey was made of the occurrence and distribution of citrus Huanglongbing disease and its insect vectors in lemon orchards under different ecological conditions in the dry and humid tropical areas.The survey showed that Huanglongbing was distributed in dry and humid tropical area of western Yunnan.Huanglongbing and Diaphorina citriis occurred serious in low altitude areas.With increasing of altitude the occurrence of Huanglongbing and D.citri gradually decreased,while occurrence of Cacopsylla citrisuga increased.At above 1100 m altitude only C.citrisuga was observed to occur.The incidence of Huanglongbing was lower in young lemon orchards interplanted with high-stem crops or with high-stem crops as shelter than in clean lemon orchards.The incidence of Huanglongbing in young orchards was related to the surrounding environmental conditions and management level.