曲靖烟区烟叶微量元素与土壤pH值关系研究 |
张芸萍, 郭山虎, 张锦涛, 解燕, 易克, 李强 |
The Relationship between Trace Elements in Tobacco Leaves and Soil pH in Qujing |
Zhang Yunping, Guo Shanhu, Zhang Jintao, Xie Yan, Yi Ke, Li Qiang |
图1 曲靖烟区土壤pH值正态分布图 |
Fig.1 Normal distribution of pH value of soil in Qujing tobacco area |