豫西山区日本落叶松纸浆用材林施肥技术的研究  

Fertilization techniques of juvenile Larix kaempferi pulpwood plantation in southern temperate alpine region

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,河南洛阳471002

出　　处：《河南农业大学学报》2010年第5期518-523,527,共7页Journal of Henan Agricultural University

基　　金：国家"十一五"科技支撑课题项目(2006BAD24B06)

摘　　要：根据"八五"期间设置在河南省五马寺林场的日本落叶松幼龄林施肥试验多年观测数据,研究了不同施肥量、N/P、施肥次数对日本落叶松幼林及其后续生长的影响,并进行了不同施肥组合的经济效益对比分析.结果表明,施肥量对造林次年(1993)的保存率、5 a树高、当年高和保存率影响显著;N/P为1∶0时对生长起促进作用;施肥次数对5 a的树高和当年高、对6 a的树高影响显著,1次施肥的生长量显著高于2次施肥;施肥量为50g.株-1,N/P为2∶1,施肥1次的各年生长量高于其它大多数组合,其胸径、树高、单株材积、公顷蓄积量分别比对照提高14.3%,5.7%,36.3%和20.1%,其净现值(NPV),效益成本比(BCR),内部收益率(IRR)分别比平均水平高出44.1%,21.6%和14.4%,因此从生长量和资金利用率的角度考虑,建议该地区采用施肥量为50 g.株-1,N/P为2∶1,施肥1次的方式施肥.The influence of amounts,ratios of N/P fertilizer and times of fertilization and their interactions on juvenile Larix kaempferi growth were studied,based on the experimental fertilization forest of 4×3×2 set up during the eighth five-year-plan period in Wumasi Forestry Farm,Henan Province.The economic benefit of different groups was also analyzed.The results showed that different amounts of fertilization significantly affected the survival rate of Larix kaempferi after afforestation,influencing the tree height,annual growth and survival rate at 5-year-old.The suggested amounts of fertilization was 25 g.Differences in tree growth among 3 ratios of N/P fertilizer were insignificant after fertilization,but growth increased with the proportion of N fertilizer increasing and P fertilizer decreasing.Times of fertilization affected the tree growth,annual growth at 5-year-old and tree growth at 6-year-old significantly,and the growth of 2 times fertilization was lower than that of 1 time fertilization.50 g·plant-1 fertilization,ratios of N/P fertilizer with 2∶1 and one-time fertilization,was recommended in this area,of which DBH,tree height,volume,standing stock,was14.3%,5.7%,36.3%,20.1% respectively higher than that of counterpart and NPV,BCR,IRR was 44.1%,21.6%,14.4% respectively higher than that of other average.Therefore,A2B2C1 amounts,ratios of N/P fertilizer and times of fertilization was suggested for the area for short rotation industrial plantation of Larix kaempferi,namely amounts with 50 g,ratios of N/P fertilizer with 2∶1 and one time of fertilization.

关 键 词：日本落叶松 纸浆用材林 施肥效应 生长量 经济效益分析 

分 类 号：S753.53[农业科学—森林经理学] S791.223[农业科学—林学]