摘要
1987年4月—7月,在同等立地条件下,对日本落叶松和长白落叶松无性系嫁接林分及未经嫁接的一般长白落叶松和日本落叶松林分生长情况进行对比调查,通过对这三种林分达到工艺成熟时(做坑木)的投入与产出进行预测分析。结果表明:嫁接林分达到工艺成熟时(做坑木),同未经嫁接的长白落叶松、日本落叶松相比。不仅可以提高单位面积木材产量和土地利用率,缩短轮伐期,还能解决日本落叶松种源不足问题,具有较大的经济效益。
During April and July in 1987, the growth rate of trees in stands of Changbai larch, Japan larch and Changbai-Japan vegetative grafting larch in same growth coditions was investigated. The input and output of the three stands was forecasted and analysed when the woods reach their industrial mature age(miner timber). Results shows that the Chnagbai-japan grafting larch has a better economic benefit than those of Cahngbai larch and Japan larch. When reaching the. industrial mature age, the grafting larch can yield more timber per acre, take better usage of the lands and short the cutting rotation than those of Changbai larch and Japan larch. Also, the grafting larch can solve the problem of seed shortage of Japan larch. It will have a great economic benefits.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1992年第6期106-111,共6页
Journal of Northeast Forestry University
关键词
无性系
嫁接
林分
经济效益
Japan larch and Changbai larch vegetative line
Grafting
Forest stand
Economic benefit
