| 摘要: |
| 对陕西省烟区100个黄绵土样的基本理化性状和不同形态钾含量进行了测定,并分析了相应的100个烟样的烟叶含钾量,结果表明:①土壤中水溶态钾、代换态钾、非代换态钾、矿物态钾和全钾的平均含量分别为21. 1, 115. 2, 701. 2, 17 295. 1和18 216. 0 mg/kg.②各种形态钾与有机质均呈正相关,水溶态钾与黄绵土物理性粘粒呈显著负相关,代换态钾与黄绵土物理性粘粒、CEC及水溶态钾呈显著正相关。③土壤缓效钾是钾素供应的潜在指标,其释放过程符合Y=ax-b模式。有机质是影响土壤速效钾的供应和补给的重要因子。④种烟前后土壤速效钾含量均与烟叶含钾量呈极显著的正相关。 |
| 关键词: 黄绵土，烤烟，钾形态，供钾强度 |
| DOI： |
| 分类号:S153 |
| 基金项目:陕西省烟草公司资助项目 |
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| Relationship of Potassium Contents Between Huangmian Soil and Flue Cured Tobacco Leaves |
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| Abstract: |
| The basic physical and chemical characteristics and the contents of different forms potassium of 100 samples of Huangmian soil and the corresponding flue cured
tobacco leaves were analysed.The result showed that:①The average contents of water
soluble potassium, replaceable potassium, non-replaceable potassium,mineral-potassium
and total potassium of Huangmian soil are 21. 1 mg /kg, 115. 2 mg /kg, 701. 2 mg /kg,
17 295. 1mg /kg and 18 216. 0mg /kg respectively;②The different forms of potassium
have a positive relationship with the organic matter, the content of water soluble potassium has a negative relationship significantly with that of Huangmian soil physical clay.
The content of replaceable potassium has a positive relationship significantly with that
of Huangmian soil physical clay, water-soluble potassium and CEC;③The soil slow
available potassium is the potential target of potassium supply with the release process
pattern of Y=ax-b.Organic matter is the important factor in affecting the soil rapidly
available potassium supply;④The content of soil rapidly available potassium supply has
a significantly positive relationship with the content of flue cured tobacco leaves. |
| Key words: Huangmian soil, flue cured tobacco, potassium for, potassium supply intensity |
