马尾松闽粤栲套种林的林木生长状况分析

Tree Growth Status of Intercropping Forest of Pinus massoniana and Castanopsis fissa

为探索马尾松纯林改造的新途径,改善马尾松纯林的林分结构,2005年开展在间伐措施后的马尾松林下套种闽粤栲试验,营造以马尾松闽粤栲为主的异龄复层林,2016年在福建省沙县开展马尾松林下套种闽粤栲林分的生长状况调查研究。结果表明,在异龄复层林中,各处理水平的马尾松、闽粤栲年生长量和根系生长状况均优于对照,马尾松保留密度以450~600株/hm^2为宜,闽粤栲套种密度为1 200株/hm^2。形成以异龄复层林分结构,改善了土壤结构,提高了土壤肥力,促进了林木生长,有利于提高林分保水固土能力和抗逆能力。

In order to explore the new ways to improve the pure forest of Pinus massoniana and improve the stand structure of Pinus massoniana pure forest, we carried out the test of Interplanting Castanopsis fissa in P. massoniana forest, to create a different age P. massoniana and C. fissa based multiple layer. The investigation on the growth status of intercropping Castanopsis fissa in Pinus massoniana Forest was carried out in Shaxian County of Fujian Province in 2016. The results showed that the annual growth and root growth of Pinus massoniana and Castanopsisfissa were better than those in control, and the density of Pinus massoniana was 450 ~ 600/hm2. The density of Castanopsis fissa was 1 200 plants/hm2. The for- mation of soil structure in different ages improved soil structure and soil fertility, promoted the growth of trees, and also improved the ability of soil water retention and resistance to stress.