川中浅丘农区坡地林农复合系统物质流的研究
Material flux of agro-forestry systems on slope iu hilly regions of Sichuan basin
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摘要: 对川中浅丘农区坡地林农复合系统物质流研究的结果表明，林农复合系统比对照农地系统营养元素积累效应明显且营养元素利用率高。林农复合系统NP盈余，而K亏缺。由此提出了相应改进措施。Abstract: Results from the analysis of the material flux showed that the agro-forestey system had higher nutrient accumulative and utilization abilifies than the single farmland system．There were surp1us of N and P in the agro-forestry system，while K WaS deficient．Measures were presented for improving the K supply．
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