【摘要】 为维持桉树（Eucalyptus spp.）人工林长期生产力，设置林下间种山毛豆（Tephrosia candida)(T1）、林下间种田菁（Sesbania cannabina)(T2）、有机肥全替代（T3）和单施化肥（CK)4个模式，综合评价不同模式对桉树人工林的营养物质积累、土壤保育功能和价值及经济效益的影响。结果表明，T1和T2模式能提高人工林营养物质积累量和营养物质积累价值；T1、T2和T3模式土壤固土价值增量分别为18.31、21.80和14.08元/hm~2，土壤保肥价值增量分别是CK的3.12、2.18和2.22倍，土壤保育功能价值增量分别比CK高出223.99%、130.23%和131.18%，均可有效提升土壤固土、保肥功能和价值。T3和T1模式的利润分别比CK高出2 279.15和1 425.06元，T3和T1模式经济效益显著。更多还原

【Abstract】 In order to maintain long-term productivity of Eucalyptus plantations, four models of understory intercropping with Tephrosia candida(T1), understory intercropping with Sesbania cannabina(T2), organic fertilizer replacing chemical fertilizer(T3) and single application of chemical fertilizer(CK) were set up to comprehensively evaluate effects of different modes on nutrient accumulation, soil conservation function and value, and economic benefits of Eucalyptus plantations. Results showed that T1 and T2 modes could improve nutrient accumulation and nutrient accumulation value in Eucalyptus plantations. Increments of soil stabilization values were18.31, 21.80 and 14.08 yuan/hm~2 in T1, T2 and T3 modes, respectively, and increments of fertilizer retention values were 3.12, 2.18 and 2.22 times of that of CK, respectively, and increments of soil conservation function values were 223.99%, 130.23% and 131.18% higher than that of CK, respectively, which could effectively enhance soil stabilization and fertilizer retention functions and values. Profits of T3 and T1 modes increased by2 279.15 and 1 425.06 yuan than CK, respectively. T1 and T3 modes had significant economic benefits.更多还原