摘要
为期４ａ的低产毛竹林改造试验结果表明：深挖和施肥能极显著地使毛竹胸径增粗、竹壁增厚及枝下高增加，提高了毛竹的市场等级。３ａ基本完成了林分结构的调整工作。调整后的林分密度由最初的１２２０株／ｈｍ￣２增加至３０００株／ｈｍ￣２左右，且株数按龄级分布趋于均衡和合理。调整期投入与收入比值为１．００：１．２８，若不计人工费用和山租可达１．００：５．５２。调整后的林分投入与收入比值为１．００：４．９３，若不计用工及山粗则达１．００：２４．０５，经济效益良好。
Four-year experiments with low production forest of moso bambooin Qingyuan County,Zhejiang Province suggests that digging and fertilizingcan obviously promote the growth of DBH,thichen the wall and increase theheight of stem under branch. So the grade of bamboo trunk for market isincreased.The density increase from the beginning 1218 to 3000 per hectare,and the distribution of numbers of bamboo to ages tends to balance and rea-sonable. The value of investment to income is 1.00:1.28 during adjustment,if not take the wage of work and the rent money into account,it is 1.00:5.52.After adjustment it is 1.00:4.93,if not take the wage of work and therent money,it is 1.00:24.05。
出处
《浙江林学院学报》
CSCD
1995年第1期114-118,共5页
Journal of Zhejiang Forestry College
关键词
毛竹
低产林改造
林分组成
效益
Phyllostachys pubescens
low production forest improvement
standstructure
benefit
