马鞍山市郊数万亩松类低产林分，大多数是六七十年代营造的黑松、马尾松。因立地条件差，树种选择不当，经营管理粗放，再加上80年代松材线虫病的危害，造成大面积松林的枯死或生长低劣，林分衰败，亟待实行更新造林。为了探讨解决沿江石质丘陵次改林地造林树种的选择，马鞍山? Massachusetts suburbs of Ma’anshan tens of thousands of loose-yielding Pinus, most of the sixties and seventies built black pine, Masson pine. Due to poor site conditions, improper tree species selection, extensive management and management, and the dangers of pine wilt disease in the 1980s, the large area of ​​pine forests is withered or poorly greened, the forest declines, and the afforestation is urgently needed. In order to explore the solution to the rocky hills along the river twice the choice of afforestation tree species, Ma On Shan?