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

摘要: 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l1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”地区很有发展前景的优良造林树种，值得大力繁殖推广。

Abstract: 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 seed-lings are larger than those of P．sylvestris var．mongolica，P．densiflora and P．tablaeformis．The heights of 2-year-old seedlings are 36％，51％ and 33％，respectively，higher than that of the latter thre pines．The 11-year-old tres 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．