桉树人工林间作豆科牧草适应性评价  

Selection and Evaluation of Adaptability for Legumes under Silvopastoral Systems

作　　者：白昌军[1] 虞道耿[1] 陈志权[1] 刘国道[1] 

机构地区：[1]中国热带农业科学院热带作物品种资源研究所农业部华南作物基因资源与种质创制重点实验室,海南儋州571737

出　　处：《热带作物学报》2014年第1期33-41,共9页Chinese Journal of Tropical Crops

基　　金：国家科技支撑计划项目(No.2011BAD17B01-01-5);农业部物种资源保护"热带牧草种质资源保存"项目;农业部热带作物种质资源保护项目(No.12RZZY-09);现代农业人才支撑计划

摘　　要：桉树人工林单一种植引起植被多样性减少是普遍存在的问题，间作成为恢复与重建桉树林下植被多样性的重要途径。桉树人工林下间作豆科牧草综合评价结果表明GC1581、GC1517、热研10号和热研2号柱花草牧草产草量达296．54～852．08kg/hm2，耐干旱，旱季牧草产量占年产草量的18．42％～23．95％，在极端干旱条件下仍保持一定的生长和生物量的积累．植株存活率达50-2％～61．9％，间作牧草在桉树行间形成良好的覆盖层，覆盖度达47．083％～79．252％，适应性强。间作可促进林下植被的恢复，进而促进植被多样性的形成，这对增加桉树人工林的群落组成、形成多层次片层结构有积极意义。The biodiversity of vegetation reduction now are becoming the popular problem in Eucalyptus plantation and intercropping is the important way to restore and reconstruct the biodiversity of Eucalyptus plantation. The preliminary results showed that Stylosanthes guiartensis GC1581, Stylosanthes guiartensis GC1517, Stylosanthes guianens/s cv. Reyan No.10 and Stylosanthes guianensis cv. Reyan No. 2 had the best suitability among legumes intercropped in Eucalyptus plantation and there was higher dry matter yield, from 296.54 kg/hm2 to 852.08 kg/hm2, much more drought resistance also, their survival rate was 50.2% to 61.9%, and the coverage was 47.083% to 79.252%. Intercropping is a good cover layer under Eucalyptus plantation and good adaptability.

关 键 词：刚果12号桉 牧草间作 豆科牧草 适应性 

分 类 号：S792.39[农业科学—林木遗传育种]