武夷山风景区萧氏松茎象的发生与分布

The occurrence and distribution of Hylobitelus xiaoi in Wuyi scenery spot

林间调查表明，萧氏松茎象在武夷山风景区水帘、大红袍、大王亭、一曲附近以及一线天均有不同程度的发生。萧氏松茎象的发生与坡位、马尾松的胸径、地被物覆盖率以及40a生以下的松树之间有很大关系，不同坡位间马尾松林的被害株率和虫口密度均存在显著差异，中坡受害最重，下坡受害程度最轻，胸径在21～60cm之间的松树和40a生以下的松树与萧氏松茎象幼虫虫口密度间存在极显著的相关性。

The survey in forests showed that Hylobitelus xiaoi occurred at different level in Wuyi scenery spot. Obviously the occurrence correlated with the position of the slope,the diameters at the breast height,the vegetation cover and the ages of under 40 year old. The pines at the middle position of a slope were harmed mostly, but these at the bottom position harmed fewly. The larvae obviously woule host on these pines with 21 -60cm diameters, and the pines under 40 years old had a mighty obviously relationship with the population of Hylobitelus xiaoi larvae.