彰武松生长及适应性初步研究

Preliminary study on the growth and adaptation of Pinus densiflora var. zhangwuensis

彰武松是赤松的天然杂交新变种,经繁殖观察研究表明,其顶芽饱满、长势旺盛,无性嫁接愈合能力强,生长速度快,1年生、2年生彰武松实生苗的地径和苗高均大于同龄樟子松、赤松、油松,2年生苗高分别为樟子松、赤松、油松的136％、151％和133％。彰武松与11年生樟子松树高比为1.82:1,地径比为1.47:1,差异显著。彰武松有较强的抗旱和抗病能力,是“三北”地区很育发展前景的优良造林树种,值得大力繁殖推广。

Zhangwu pine (Pinus densiflora var.zhangwuensis) is a natural hybrid of P.densiflora.Studies show that Zhangwu pine has full terminal buds,with high survival in grafting.The diameter and height of 1 and 2-year-old seedlings are larger than those of P.sylvestris var.mongolica,V.densiflora and P.tablaeformis.The heights of 2-year-old seedlings are 36%,51 % and 33%,respectively,higher than that of the latter three pines.The 11-year-old trees of Zhangwu pine is significantly larger than those of P.sylvestris var.mongolica,with 82% higher in height and 47% bigger in diameter.Zhangwu pine is also resistant to drought and disease,so it is a promising variety for afforestation in the Three-north Region,and worthy of propagation and extension.