马尾松在我省主要分布于陕南汉水流域地区:安康专区以安康、平利、洵阳为多,汉中专区以西乡县之沙河坎、苦竹坝、孙家坪为主,城固、汉中市亦有。该树属于阳性树种,深根性,是荒山造林先锋树种之一,对土壤要求不严,除了过于低温和碱地外,不论土质肥瘠均可生长,而喜于深厚的沙质土地,陕南山区,平地的一般油沙土,黄沙土,均生长良 Masson pine is mainly distributed in the Han River drainage area of ​​Shaanxi Province in the province: Ankang Prefecture is dominated by Ankang, Pingli and Xingyang. Hanzhong prefecture is mainly composed of Shahekan, Bituba and Sunjiaping of Xixiang County, Have. The tree is a positive species, deep-rooted, is one of the pioneers of barren hills afforestation, lax requirements of the soil, in addition to being too cold and alkaline, regardless of soil fertility can grow, and like the deep sandy land, Shannan Shan District, the general oil sand, yellow sand, are good growth