整地方式对桉树生长及经济效益的影响  

Effects of Site Preparation on Growth Performance and Economic Benefit of Eucalyptus ABL W5 Plantation

作　　者：杨曾奖[1] 徐大平[1] 张宁南[1] 

机构地区：[1]中国林业科学研究院热带林业研究所,广州龙洞510520

出　　处：《福建林学院学报》2004年第3期215-218,共4页Journal of Fujian College of Forestry

基　　金："九五"国家攻关专题"桉树纸浆用材树种良种选育及培育技术研究"的科学基金资助项目(96 011 01 03)

摘　　要：穴垦整地(对照)、穴垦+扩穴抚育、人工带垦、机耕整地,4种整地方式中,随整地质量的提高而有利于桉树(刚果W5)成活外,显著地促进了桉树的生长 4年生时,树高生长分别为穴垦对照的106 7%、118 3%和147 5%;胸径生长分别为110 3%、127 7%和152 9%;蓄积量分别为127 3%、198 4%和350 9%;经济产出分别是对照的127 3%、198 4%和350 9% 整地规格越高,林分的蓄积量越大 建议有条件的地方尽可能地进行机耕整地,可适当加大整地规格。The growth performance and economic benefits of a Eucalyptus ABL W5 plantation growing on a site-preparation experiment in Yangxi county of Guangdong province. The levels of site preparation treatments in order of increasing intensity were: ① hole-digging (50 cm×40 cm×40 cm) only as the control,② hole-digging plus hole-extending while tending,③ strip-like soil cultivation (50 cm×40 cm) and ④ overall soil cultivation by tractor (40 cm). Results from an assessment 4 years after planting indicated that the site-preparation treatments resulted in increased tree height, DBH and stand volume. The averaged tree heights,DBHs and stand volumes in treatments ②, ③ and ④ were 106.7%, 118.3% and 147.5%;110.3%,127.7% and 152.9%;and 127.3%,198.4% and 350.9% of those of the control,respectively. It is recommended that the overall soil cultivation method should be adopted where possible to increase the growth performance and economic benefits of Eucalyptus ABL W5 plantation.

关 键 词：整地 桉树 生长效应 经济效益 

分 类 号：S725.4[农业科学—林木遗传育种]