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

表1 烟叶微量营养元素含量分级标准

Table 1 Grading standard for micro nutrient elements in tobacco leaves

元素Element 很低Very low 低Low 中等Medium 高High 很高Very high Mn (mg/kg) ≤20.0 (20.0~50.0] (50.0~200.0] (200.0~500.0) ≥500.0 B (mg/kg) ≤10.0 (10.0~20.0] (20.0~30.0] (30.0~40.0) ≥40.0 Mo (mg/kg) ≤0.1 (0.1~0.5] (0.5~1.0) ≥1.0 - Zn (mg/kg) ≤7.0 (7.0~20.0] (20.0~50.0] (50.0~70.0) ≥70.0 Fe (mg/kg) ≤55.0 (55.0~90.0] (90.0~120.0] (120.0~200.0) ≥200.0 Cl (%) ≤0.10 (0.10~0.30] (0.30~0.80) ≥0.80 -