摘要
在常规培育管理条件下，造林密度为４２０～６３０株／ｈｍ２的雷竹，造林后第４年郁闭并形成经济产量，第６年进入盛产（笋）期，第７年平均产笋１９．７ｔ／ｈｍ２，产值可达５．１１万元／ｈｍ２，当年投产比１：４．７。造林７年中，投资年平均效益系数Ｋ＝０．３０（元），年平均投产比Ｒ为１：１．７３，投资回收期Ｔ＝４．９３（ａ）。
Phyllostachgs praecox f. pervernalis forest with density of 420￣630 culm/hm2 reached economic yield in the 4 th yea. of forestation,and come into full production period in the 6th year.In the 7thyear,average yield of bamboo shoot reached 19.7 t/hm2,ontput valuereached 51.100yuan/hm2.During.the 7 years, the annual average.investment effect K=0.30, average annual input ratioR=1:1.73,investment recovery period T=4.93.
出处
《竹子研究汇刊》
北大核心
1996年第2期15-19,共5页
Journal of Bamboo Research
关键词
雷竹
造林
经济效益
分析
Phgllostachys praecox f.Dervernalis
forestation
economic benefit
analysis
