我场经营山林面积11万余亩,分布在壁山县东、西两条山脉,林区海拔高300—600米。马尾松纯林占6.6万亩,其中1965年以后新造的马尾松幼林为23.784亩,现已郁闭成林。但球果小卷蛾危害松梢严重,林木不能正常生长。经调查,受害幼松,主梢枯倒,分枝成丛,优势側梢取代主梢,主干弯曲,成林不成材,降低了利用价值。受害幼松较 I run a forest area of ​​more than 11 acres, located in Bishan County, east and west two mountains, forest elevation 300-600 meters. Pinus massoniana forest accounts for 6.6 million mu, of which 1965 after the new masson pine forest 23.784 acres, is now closed forest. However, Conchocampus larvae endanger pine serious, trees can not grow normally. After investigation, victims loose, the main shoots fell, branches into clumps, the dominant side shoots to replace the dominant, trunk bending, forest is not a timber, reducing the value of use. Vicia loose victims