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3种相思在肇庆造林生长对比
梁承坚,陈水莲,韩东苗,胡德活
肇庆市林业科学研究所,肇庆市林业科学研究所,肇庆市林业科学研究所,广东省森林培育与保护利用重点实验室,广东省林业科学研究院
摘要:
对厚荚相思(Acacia crassicarpa)、马占相思(A. mangium)、肯氏相思(A. cuninghamia)进 行引种造林试验。结果表明,在粤西造林后 1~4 a,厚荚相思树高生长最快,肯氏相思次之,马占相思最 慢,分别为 5.57、4.92、4.08 m;但马占相思造林后第 4 年至第 5 年生长明显加快,造林后 5 a,马占相 思树高、胸径生长最快、生物量最大,分别为 7.01 m、7.69 cm、32.1 kg,厚荚相思次之,分别为 6.80 m、 5.77 cm、16.72 kg,肯氏相思最差,分别为 5.32 m、4.21 cm、13.48 kg。马占相思和厚荚相思适宜在肇庆 市及粤西南地区推广。
关键词:  厚荚相思  马占相思  肯氏相思  造林对比
DOI:
分类号:S792
基金项目:
Afforestation Comparison of Three Acacia Species in Zhaoqing City
liang chengjian,CHEN Shuilian,HAN Dongmiao and HU Dehuo
Forest Research Institution of Zhaoqing,Forest Research Institution of Zhaoqing,Forest Research Institution of Zhaoqing,Guangdong Provincial Key Laboratory of Silviculture,Protection and Utilization,Guangdong Academy of Forestry
Abstract:
The introduction and afforestation of Acacia crassicarpa, A. mangium and A. cuninghamia were carried out in this experiment. The results showed that, after 1~4 years afforestation in western Guangdong, the highest growth rate of A. crassicarpa was the highest, followed by A. cuninghamia and A. mangium, and the tree height of them was 5.57, 4.92, 4.08 m respectively. However, A. mangium grew the fast from the fourth to fifth year. After 5 years of afforestation, A. mangium presented the highest growth rate in both height (7.01 m) and DBH (7.69 cm), as well as the largest biomass (32.1 kg). A. crassicarpa ranked the second with 6.80 m in height, 5.77 cm in diameter and 16.72 kg in biomass. A. cuninghamia was the last, with 5.32 m in height, 4.21 cm in diameter and 13.48 kg in biomass. In summary, A. crassicarpa and A. mangium should be promoted in Zhaoqing city and western Guangdong.
Key words:  Acacia crassicarpa  A. mangium  A. cuninghamia  afforestation contrast