暖温带中山区日本落叶松纸浆用材林整地和幼林抚育技术  

Site Preparation and Tending Techniques for Larix kaempferi Pulpwood Plantations in Warm Temperate Alpine Zone

作　　者：王宏全[1] 孙晓梅[1] 张守攻[1] 赵鲲 焦云德 

机构地区：[1]中国林业科学研究院林业研究所,北京100091 [2]洛阳市林业科学研究所

出　　处：《东北林业大学学报》2010年第11期24-26,共3页Journal of Northeast Forestry University

基　　金：国家"十一五"科技支撑课题(2006BAD24B06;2006BAD01A14)资助

摘　　要：通过"八五"期间设置在河南省蒿县五马寺林场的日本落叶松整地与幼林抚育试验林,研究了不同整地方式、抚育方式及其交互作用对纸浆材轮伐期内日本落叶松生长量和收获量的影响,并通过投入产出效益分析为南温带中山区确定最适的纸浆材整地与抚育技术措施。结果表明:整地方式对造林次年成活率影响显著,以40cm×40cm×35cm的成活率为最好;不同整地方式对日本落叶松幼林生长影响较小,到日本落叶松6年生时对高生长影响达到显著水平,表现为树高随整地规格增大而增高,随后整地效应逐渐消失。抚育方式对日本落叶松生长量的影响不显著,但造林后采用连续3a在7月上旬扩坑除草、8月中旬再全面割灌1次的抚育方式,在日本落叶松林龄达到17a时保存率最高。组合A2B3(穴径40cm、造林后连续3a在8月上旬全面割灌1次)的净现值、效益成本比和内部收益率最高,分别超过平均水平的12.8%、10.3%、6.7%。The influences of site preparation and tending methods as well as their interaction on the growth increment and output of Larix kaempferi were studied during the rotation period by setting up the experimental forest in Wumasi Forest Farm,Henan Province.The optimal site preparation and tending methods were determined by the input-output analysis.Results showed that site preparation had a significant effect on the survival rate of L.kaempferi in the next year after afforestation.The survival rate for the specification of site preparation 40 cm × 40 cm × 35 cm was highest.However,site preparation slightly affected the growth of L.kaempferi young forest,and it reached the 5% significance level at six years old,indicating that the tree height increased with the increase of specification of soil preparation,but the effect of site preparation on the growth of L.kaempferi disappeared later.Tending exerted an insignificant effect on the growth increment of L.kaempferi,but the survival rate of 17-year-old L.kaempferi forest was highest for the tending treatment of hole reclamation and grass cutting in early July for three consecutive years after afforestation and clear cutting in mid-August.The net present value,cost-benefit ratio and internal rate of return for the combination of A2B3（hole diameter 40 cm and clear cutting in early August for three consecutive years after afforestation） were 12.8%,10.3% and 6.7% higher than those of the average respectively.

关 键 词：日本落叶松 整地方式 幼林抚育 生长量 经济效益分析 

分 类 号：S791.223[农业科学—林木遗传育种]