湖北建始县低产林改造技术  

Reconstructive technology for low-yield forest in Jianshi County of Hubei

作　　者：王顺安 张灿明[2] 马丰丰[2] 

机构地区：[1]建始县国有长岭岗林场,湖北建始445304 [2]湖南省林业科学院,湖南长沙410004

出　　处：《湖南林业科技》2009年第4期51-53,共3页Hunan Forestry Science & Technology

基　　金："十一五"国家科技支撑计划课题:落叶松人工林长期生产力维护与可持续经营技术(2006BAD24B0603)资助

摘　　要：在中国南方最大的日本落叶松基地建始县,对低产林采伐迹地采用清杂整地,营造日本落叶松、山地杨纯林和两者混交林,对各试验地的林木采取抚育除草、施肥等措施。其结果表明:日本落叶松及山地杨混交林10年生的林木平均胸径分别比日本落叶松、山地杨纯林大13.6%、16.1%,平均树高分别大31.6%、21.4%、平均树冠分别大11.8%、14.9%,每公顷蓄积量平均分别多52.8%、73.7%。土壤肥力测定分析:日本落叶松山地杨混交林的土壤养分含量N、P、K平均比日本落叶松、山地杨纯林的土壤分别大33.7%、23.9%;27.4%、26.0%;36.0%、40.9%。因此营建日本落叶松与山地杨纯林是较为经济、而生态效果更佳的低产林改造方式。Pure forest Larix Kaempferi and Maximowiczzi x P. deltoids, and the mixed forest of the two species （ L Kaempferi and M. x P. delto/ds） were constructed respectively in low-yield forest after soil preparation in Jianshi County, the biggest L. Kaempferi forest base in south China. Some treatments, such as cultivation, fertilization, etc. , were conducted to each experimental forest. The results showed that average diameters at breast height of mixed ten-year forest increased by 13.6% and 16.1% of L. Kaempferi and M. x P. deltoids pure forest, respectively; average height increased by 31.6% and 21.4%, respectively; average width of individual increased by 11.8% and 14.9%, respectively; average cumulative yield in a hectare increased by 52.8% and 73.3%, respectively. Soil analysis indicated that nutrient matter concentration（ nitrogen, phosphorus, kalium） in the mixed forest increased by 33.7%, 27.4% and 36.0% of L Kaempferi pure forest and 23.9% , 26.0%, 40.9% of M. x P. deltoids pure forest, respectively. The results indicated that the mixed forest of L. Kaempferi and M. x P. deltoids was economic and ecological method for low-yield forest improvement.

关 键 词：日本落叶松 山地杨 低产林 混交林 栽培技术 

分 类 号：S725[农业科学—林木遗传育种]