沿江典型区域杨树大径材人工林复合经营技术研究
Study on Compound Management Techniques for Cultivating Big-diameter Timber Poplar Plantations in Typical Areas along the Yangtze River
刘俊龙 1吴中能 1苗婷婷 1丁昌俊 2苏晓华 2孙慧 1闫彩霞 1杨传宝3
作者信息
- 1. 安徽省林业科学研究院,安徽 合肥 230088
- 2. 中国林业科学研究院林业研究所,北京 100091
- 3. 大观区林长制办公室,安徽 安庆 246000
- 折叠
摘要
本文对杨树大径材培育周期内的5个典型复合经营模式生长和经济效益进行分析,选择出适宜长江沿江典型区域种植的杨树大径材复合经营模式.结果表明:参试林农复合经营模式下杨树的胸径、树高、单位面积蓄积量分别比纯林增加 15.31％(YM)～20.92％(YYD)、9.52％(YM)～11.31％(YY)、45.66％(YM)～61.38％(YYD).采用间作模式的6年生杨树复合经营总收益均大于杨树纯林,杨树间作模式的总产值为杨树纯林的2.78(YM)～4.47倍(YYD)o采用多作物间作模式总收益及总产值明显高于单作物间作模式.其中套种6年杨树-油菜-黄豆(YYD)模式累计总收益(11 905元/667m2)最高,杨树-小麦-黄豆(YMD)累计总收益(11 599元/667m2)次之.5个模式下6年生杨树木材收益由高到低依次为:YYD(7 244 元/667m2)＞YMD(7 197 元/667m2)＞YY(7 106.5 元/667m2)＞YM(6 539.6元/667m2)＞YC(4 408.48元/667 m2).杨树-油菜-黄豆(YYD)是促进大径材杨树生长、材积和经济效益最高的优选模式.此研究旨在为长江沿江典型区域杨树的大径材培育和复合经营策略提供参考.
Abstract
In this paper,an analysis was made on the growth and economic benefits of 5 typical compound management modes for culti-vating big-diameter poplars in the cultivation period to select the best compound management mode for growing big-diameter poplars in suitable areas along the Yangtze River and provide reference for the big-diameter poplar cultivation and compound management strategy in these areas.The results showed that the DBH,tree height and per-unit-area volume of the poplars in the tested agroforestry compound management modes increased by 15.31％(YM)～20.92％(YYD),9.52％(YM)～11.31％(YY)and 45.66％(YM)～61.38％(YYD)respectively compared with those of the pure poplar plantation.The total incomes of the 6-year-old poplars in the intercropping compound management mode were all higher than those gained from pure poplar plantations with the total output value 2.78～4.47 times higher than that of the pure poplar plantations.The total income and total output value in the multiple-crop intercropping modes were all significantly higher than those in the single-crop intercropping mode,in which the 6-year-old poplar-oilseed rape-soybean intercropping mode(YYD)produced the highest total income of 11 905 yuan/667m2,followed by the poplar-wheat-soybean mode(YMD)with the total income of 11 599 yuan/667m2.From the highest to the lowest,the income from timber of the 6-year-old poplars in the 5 modes was YYD(7 244 yuan/667m2)＞YMD(7 197 yuan/667m2)＞YY(7 106.5 yuan/667m2)＞YM(6 539.6 yuan/667m2)＞YC(4 408.48 yuan/667m2).The poplar-oilseed rape-soybean intercropping mode(YYD)is the optimized mode promoting big-diam-eter poplar growth,increasing timber volume and having the highest economic benefits.
关键词
沿江地区/杨树大径材/林农复合经营/产投比/收支平衡Key words
Areas along the Yangtze River/Big-diameter poplars/Agroforestry compound management/Output-input ratio/Balance between income and expenditure引用本文复制引用
基金项目
"十四五"国家重点研发计划课题(2021YFD2201200)
出版年
2024
NETL
NSTL
万方数据