固氮树种与非固氮树种混交林研究现状  

The Review of Mixtures of Nitrogenfixing and Nonnitrogenfixing Tree Species

作　　者：贾黎明[1] 

机构地区：[1]北京林业大学

出　　处：《世界林业研究》1998年第1期20-26,共7页World Forestry Research

摘　　要：本文概述了国内外固氮树种和非固氮树种混交林的研究现状。指出在贫瘠缺氮立地上，固氮树种可改善林地小气候，提高林分稳定性，改良土壤，改善非固氮树种氮素营养状况，促进其生长，增加林地产量；而在肥沃富氮立地上，混交效益不能充分体现，树木生长不变或反而下降。同时，对混交林树种间存在的复杂关系（特别是特殊的营养关系）及其造林技术进行了讨论。最后指出这种类型的混交林由于在贫瘠地造林及在林业中部分代替无机氮肥方面的巨大潜力，必将在世界范围内得到长足的发展。Abstract The international research on mixtures of nitrogenfixing and nonnitrogenfixing tree species is reviewed. On Nlimited sites, nitrogenfixing tree species could improve the microclimate, stability and soil nutrient condition of stands, improve the nutrient condition and growth of nonnitrogenfixing tree species, increase the yield of stands; But on Nrich sites, the mixed effect couldn’t be reflected fully and the growth of nonnitrogenfixing tree species doesn’t increase or even decrease. The very completed interaction of species (especially special nutrient relation between species) and the silvicultural methods are discussed. It points out that this kind of mixtures must be developed rapidly around the world because of the great potentialities in plantation on poor sites and taking the place of inorganic nitrogen fertilizer partly in forestry.

关 键 词：固氮树种 非固氮树种 混交林 种间关系 混交效益 

分 类 号：S725.2[农业科学—林木遗传育种]