摘要
白蚁危害幼杉严重，在大四方林区4块标准地1994年调查，生长不良株率9—19．5％，死亡株率达14．84—24．10％，幼杉的长势较差。在老木坞林区杉木成林的3块标准地上的3株解析木分析，胸径损失率29．1％，树高生长损失12．7％，材积总生长量损失率为58．3％，每亩损失材积7．527m3。
Young Cunninghamia lanceolata Hook were seriously damaged by termites, Investi-gation was conducted on four sample areas of Dasiqang is 1994: The unhealthy rate of plant in 9 -19. 5 %, death rate of plant is 14. 84 - 24-.10%, the young Cunninghamia lanceolata were in bad condition. Fully grown trees of three samiple areas of Laomuwu wood were analysed: Loss rate of breast radius is 29.1% of hight of tree is 12. 7%, of tolal gowth quantity is 58. 3%. Loss of quan- tity per mou is 7. 527m
