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一、发生地区概况: 松干基象鼻虫是云南松幼林主要害虫之一,发生地区广,为害较为严重。从调查地区来看,滇中地区的新平林业局、滇西地区的漾江林业局,漾濞县,以及保山地区的保山、施甸等县均有不同程度的为害。其中以永平、巍山、施甸等县较为严重。林木被害率在54～83％,死亡率在2～11％,死亡木一眼可见。高山脚下、沟旁、路旁、河谷以及人为活动较多地区均是受害严重地带。
First, the occurrence of a regional overview: Songgan base weevil is one of the main pests YUNNAN pine, occurred in a wide area, more serious damage. From the survey area, Xinping Forestry Bureau in central Yunnan, Yangjiang Forestry Bureau in West Yunnan, Yangbian County and Baoshan, Shidian and other counties in Baoshan area have different degrees of damage. Among them, Yongping, Weishan and Shidian counties are more serious. Forest damage rate of 54 to 83%, the mortality rate of 2 to 11%, a dead wood visible. The foot of the mountain, the side of the ditch, roadsides, valleys and more man-made areas are severely affected areas.