几种松树在建水县石漠化地区生长状况研究

Study on Growth of Several Pine Trees in Desertification Area of Jianshui County

对建水县小关石漠化地区栽种的云南松、马尾松、加勒比松、湿地松10 a生林分生长状况进行调查,通过对树高、胸径、冠幅的方差分析及LSD检验,结果表明:树高年平均生长量加勒比松最大,云南松最小;胸径年平均生长量也是加勒比松最大,云南松最小;冠幅年平均生长量则是云南松最大,马尾松最小.加勒比松、马尾松可作为建水县石漠化地区造林树种进行推广;云南松作为乡土树种虽然存在有蹲苗期、前期生长量低等问题,但也可作为造林推广树种;湿地松则适宜培育小径材,可作为备选树种.

The growth of 1 O- year plants such as Pinus yunnanensis, Pinus massoniana, Pinus caribaea and Pinus elliottii cultivated in desertification area of Jianshui county was investigated. The result from variance analysis of tree height,chest diameter, crown and LSD examination showed that Pinus caribaea was the biggest and Pinus yunnanensis was the smallest in terms of average annual growth of height and chest diameter ; while Pinus yunnanensis was the biggest and Pinus massoniana was the smallest in term of aver- age annual growth of crown. Therefore,Pinus caribaea and Pinus massoniana could be as tree species for afforestration in this desertification area, and Pinus yunnanensis also could be chosen owning to indigenous species; Pinus elliottii suitable for small diameter timber could prepare for being chosen as well.