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对2005年10月至2008年12月在云南甘蔗主产区的1450份土壤养分的分析研究,结果表明:云南甘蔗主产区土壤有机质、碱解氮、速效磷处在中等偏低水平,速效钾处在中等偏高水平;90%以上的有机质含量在4～40 g kg-1之间,碱解氮含量在15～160 mg kg-1,速效磷含量在0.5～29 mg kg-1,速效钾含量在30～210 mg kg-1。在集中分布区,土壤有机质、碱解氮呈近似正态分布,速效钾、速效磷呈近似偏正态分布。土壤有效养分的变异程度P>K>N。
Analysis of 1450 soil nutrients from January 2005 to December 2008 in Yunnan sugarcane main producing areas showed that soil organic matter, available nitrogen and available phosphorus in the main producing areas of Yunnan sugarcane were in the middle and low level, Potassium was moderately high, with more than 90% organic matter content ranging from 4 to 40 g kg-1, alkali-hydrolyzable nitrogen content ranging from 15 to 160 mg kg-1, available phosphorus content ranging from 0.5 to 29 mg kg-1, Available potassium content of 30 ~ 210 mg kg-1. In the concentrated distribution area, the soil organic matter and available nitrogen showed a nearly normal distribution, available potassium and available phosphorus showed a nearly normal distribution. The degree of variation of soil available nutrients P> K> N.