Impacts on the growth of Eucalyptus ABL 12 plantation after intercropping with forages in the northwestern arid area in Hainan were conducted. The preliminary results showed that intercropping with forages could promote the growth of eucalyptus biomass. In the silvopastoral systems, eucalyptus tree diameter at 1.3 m height was increased by 49.70%, the height was increased by 17.86%, the litter was increased by 25.35%, and the semi-decomposition organic matter was increased by 41.69% ～52.73% compared with that of the pure eucalyptus plantation 3 years later. It meant that eucalyptus plantation intercropping with forages could be propitious to the return of nutrients.%对海南省西北部干旱地区刚果12号桉人工林间作牧草对桉树生长量进行研究.结果表明:不施肥的情况下,间作牧草桉树胸径增粗49.70％,株高增加17.86％,桉树枯落物增加25.35％,林间蓄积的半分解物量提高了41.69％～52.73％,有利于养分的归还,提高了林地养分供应能力,说明在桉树林间作牧草有利于桉树林的生长以及土壤养分的提高.
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