烟叶K含量空间变异特征及与生态因子的相关性研究

利用地统计方法和经典统计方法,对云南保山烟区烟叶K含量及其与当地生态因子的相关性进行研究.结果表明:保山烟区各主产县B2F烟叶K含量高低顺序依次为龙陵＞腾冲＞昌宁＞隆阳＞施缅;C3F与X2F烟叶K含量顺序均为腾冲＞龙陵＞昌宁＞隆阳＞施缅.该烟区3个等级烤烟K含量空间变化趋势大体一致,均表现为由西向东和由北向南先降低后升高.烟叶K含量与土壤pH值、土壤有效镁含量在0.05水平上呈显著负相关;而与年降雨量、土壤有机质含量、土壤速效氮含量在0.01水平上呈显著正相关,与有效积温、土壤速效钾、土壤速效磷含量、土壤氯离子含量间相关性不显著.

Research on Spatial Variance of K Content in Flue-cure Tobacco Leaves and Relationships between K Content and Ecology Factors

Relationships between K content in tobacco leaves and ecology factors of Baoshan in Yunnan were researched by used of geostatistics and classical statistics. The result showed that the order of K content in B2F tobacco leaves was Longling > Tengchong > Changning > Longlang > Shimian, but the order was Tengchong > Longling> Changning > Longyang > Shimian in C3F and X2F leaves. The spatial variance of K content in three grades tobacco leaves were similar in Baoshan, both were elevated earlier and declined afterward from west to east and north to south. The K content in tobacco leaves were significantly negativecorrelated with soil pH value and available Mg content; but were strongly significantly positive correlated with annually rainfall, soil organic material and available N contents. However, there wasn' t significantly relationship between K content in tobacco leaves and effective accumulated temperature, soil available K, P and Cl contents.