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珍贵树种林下套种广东紫珠的密度效应研究
刘 敏,王胜坤,张宁南,赵志刚,陆俊锟,梁俊峰
中国林业科学研究院热带林业研究所 热带林业研究国家林业和草原局重点实验室,中国林业科学研究院热带林业研究所 热带林业研究国家林业和草原局重点实验室,中国林业科学研究院热带林业研究所 热带林业研究国家林业和草原局重点实验室,中国林业科学研究院热带林业研究所 热带林业研究国家林业和草原局重点实验室,中国林业科学研究院热带林业研究所 热带林业研究国家林业和草原局重点实验室,中国林业科学研究院热带林业研究所 热带林业研究国家林业和草原局重点实验室
摘要:
为了评价珍贵树种人工林下不同套种密度对广东紫珠 Callicarpa kwangtungensis 生长的影响, 于 7 a 生降香黄檀 Dalbergia odorifera- 檀香 Santalum album 混交林下设置 3 个密度处理种植广东紫珠,即 在行间套种 1 行、2 行、3 行,株距为 0.8 m,分别于定植后 6、12 和 18 个月调查其地径、树高和生物 量。结果表明:3 个套种密度处理间广东紫珠地径差异不显著 (P ≥ 0.05),而高生长在各时间段均差异显 著 (P < 0.05),单株生物量差异极显著 (P < 0.01),表现出随密度增加而升高的趋势。本研究筛选出降香 黄檀 - 檀香混交林下套种广东紫珠的适宜密度为行间栽种 3 行 (12 500 株 · hm-2),6 个月收获 1 次,每年 可采收广东紫珠 1 479.08 kg · hm-2( 鲜重 ),收入可达 5 916.33 元 · hm-2,可显著增加林农短期收益,为珍 贵树种规模发展提供了一种实用可行的经营模式。
关键词:  广东紫珠  密度  套种  珍贵树种
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基金项目:广东省农业领域科技计划项目(2013B020305007);广东省林业科技创新项目(2012KJCX015-03)
Effects of Interplanting Density on Productivity of Callicarpa kwangtungensis in Mixed Forests of Valuable Tree Species
LIU Min,WANG Sheng-kun,ZHANG Ning-nan,ZHAO Zhi-gang,LU Jun-kun and LIANG Jun-feng
Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry Reaearch,Research Institute of Tropical Forestry,Chinese Academy of forestry,Guangzhou,Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry Reaearch,Research Institute of Tropical Forestry,Chinese Academy of forestry,Guangzhou,Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry Reaearch,Research Institute of Tropical Forestry,Chinese Academy of forestry,Guangzhou,Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry Reaearch,Research Institute of Tropical Forestry,Chinese Academy of forestry,Guangzhou,Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry Reaearch,Research Institute of Tropical Forestry,Chinese Academy of forestry,Guangzhou,Key Laboratory of State Forestry and Grassland Administration on Tropical Forestry Reaearch,Research Institute of Tropical Forestry,Chinese Academy of forestry,Guangzhou
Abstract:
Compound management model is the trend of developing understory economy. Different density of Callicarpa kwangtungensis were established as intercrops in experiments at Gaoming county, Guangdong Province. One, two and three lines of C. kwangtungensis were planted between the rows of valuable species respectively. Height, ground diameter, and biomass were measured at 6 months, 12 months and 18 months. There were significant differences of the C. kwangtungensis heights between different densities at different time, but ground diameters didn’t have. There were significantly positively correlations between density and individual tree biomass of C. kwangtungensis at different time. According to the results, the yearly yield of C. kwangtungensis is 1793.955 kg · hm-2 fresh weight under the best density and harvest time. Useful attempts were conducted with intercrop medicinal plant with valuable trees.
Key words:  Callicarpa kwangtungensis  density  mixed forests  valuable tree species