云烟品牌云南原料基地土壤、烟叶氯素含量特征研究

Chlorine Content Characteristics of Soil and Tobacco of Yunyan Brand in Yunnan Raw Material Base

以云烟品牌云南原料基地5市(州)37县1130份土壤样品和中部烟叶样品为材料,对氯含量特征进行了分析和区划研究。结果表明:云烟品牌省内原料基地中部烟叶氯含量平均值为0.29%,氯含量<0.3%的分布频率高达71.33%,0.3%~0.8%适宜区间的样品分布频率仅有22.75%。土壤氯平均含量为15.37 mg/kg,样品分布频率最高的是<10.0 mg/kg区间,占61.68%,适宜区间10.0~30.0 mg/kg样品分布频率仅为28.23%。水溶性氯含量最高的海拔段是1800~2000 m,最低的是<1600 m;中壤土的水溶性氯含量最高,轻粘土和中粘土含量较低。云烟品牌云南原料基地中,仅有28.23%的土壤样本和22.75%的烟叶样本在适宜范围内,有61.68%的土壤样本和71.33%的烟叶样本氯含量低于适宜范围。

Taking 1130 soil samples and middle tobacco leaf samples from Yunyan brand Yunnan raw material base in 37 counties of 5 cities,we analyzed the chlorine content characteristics and carried out the zoning study.The results showed that the average chlorine content of middle tobacco leaves was 0.29%.The distribution frequency of chlorine content below 0.3%was as high as 71.33%,and the frequency of sample distribution in 0.3%-0.8%suitable range was only 22.75%.The average chlorine content of soil was 15.37 mg/kg.The highest frequency of sample distribution was<10.0 mg/kg range,accounted for 61.68%.The distribution frequency of 10.0-30.0 mg/kg samples in suitable range was only 28.23%.The highest content of water-soluble chlorine was at the altitude range of 1800-2000 m,and the lowest was<1600 m.The content of water soluble chlorine in the middle loam was the highest,and the content in light clay and medium clay was relatively low.Only 28.23%soil samples and 22.75%tobacco samples were in suitable range in Yunyan brand Yunnan raw material base.61.68%the soil samples and 71.33%the tobacco samples had lower chlorine content than the suitable range.