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[目的]为加强土壤养分管理和改善施肥体系提供参考。[方法]利用地统计学与GIS相结合的统计分析方法,探讨双流县土壤碱解氮、有效磷和速效钾含量的时空演变。[结果]1982年双流县土壤碱解氮、有效磷和速效钾含量空间分布比较零乱,分类等级较多,区域性差异较大。2007年双流县土壤碱解氮、有效磷、速效钾含量空间分布较均匀,区域性差异较小,与1982年相比更为简单。2007年双流县土壤碱解氮和速效钾含量与1982年相比呈现降低的趋势;有效磷含量较1982年总体上略有升高,但仍以中等或缺乏为主。[结论]在农业生产中,对氮肥和钾肥的使用量不够,应提倡增施氮肥和钾肥,注意平衡施用磷肥。
[Objective] The aim was to provide reference for strengthening soil nutrient management and improving fertilization system. [Method] The spatial and temporal evolution of soil available nitrogen, available phosphorus and available potassium content in Shuangliu County was studied by means of statistical analysis combined with geostatistics and GIS. [Result] The spatial distribution of soil available nitrogen, available phosphorus and available potassium in Shuangliu County in 1982 was relatively messy with more classification and regional differences. In 2007, soil available nitrogen, available phosphorus and available potassium in Shuluo County were more evenly distributed and with less regional difference, which was simpler than that in 1982. Compared with 1982, the content of available nitrogen and available potassium in soil in Shuangliu County showed a decreasing trend in 2007; the content of available phosphorus was slightly higher than that in 1982 as a whole, but the content was still moderate or lacking. [Conclusion] In the agricultural production, the amount of nitrogen and potassium fertilizer was not enough, nitrogen fertilizer and potassium fertilizer should be promoted, and balanced application of phosphate fertilizer should be paid attention to.