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以云南省烤烟主产烟区2003～2007年烤烟C3F为研究对象,利用地统计学与GIS技术结合的方法研究了云南省烤烟主产烟区钾含量的空间分布特征和年度变化情况。结果表明:云南省各年度烤烟钾含量偏低,其空间分布特征差异明显;2003年至2005年烤烟钾含量明显升高,2005年至2007年有缓慢下降的趋势;思茅地区烤烟钾含量较高,年度间保持较稳定,其它地区烤烟钾含量较低,年度间变幅较大。
Taking the main tobacco producing area of Yunnan Province from 2003 to 2007, C3F as the object of study, the spatial distribution characteristics and annual variation of potassium content in the main tobacco producing areas of Yunnan Province were studied by the combination of geostatistics and GIS techniques. The results showed that potassium content in flue-cured tobacco in Yunnan Province was low and its spatial distribution was significantly different. From 2003 to 2005, the content of potassium in flue-cured tobacco increased significantly, with a slowly decreasing trend from 2005 to 2007. The potassium content in flue-cured tobacco in Simao Prefecture was higher , Maintaining a more stable year, potassium content in flue-cured tobacco in other areas is lower, a larger amplitude during the year.