辽宁省沙地樟子松人工林衰退原因与治理对策

Study on reason of Pinus sylvestris var. mongolicaplantation decline and its control strategy in Liaoning Province

樟子松是一个优良的防风固沙和干旱地区造林树种 ,目前在辽宁西北部和整个“三北”地区已推广造林 30多万hm2 ,其中辽宁的章古台地区是最早引种成功的。但自 90年代初以来 ,大面积沙地樟子松人工林发生了衰退枯死现象。文章在大量调查的基础上 ,对樟子松衰退枯死原因进行了分析 。

As a suitable tree species to be planted for sand-break,Mongolian pine have been planted for more than 300 thousands hectare in the Northwest of Liaoning province and“Three North” area of China. Zhanggutai,Liaoning province,first introduced and planted it.But,large area of this species were damaged by an epidemic decline disease of pine since early 1990s.This paper discussed the causes of decline disease of Mongolian pine and control measure.