| 摘要: |
| 玉米、油菜和黑麦草等植物根系可直接活化和利用片麻岩和钾长石中的矿物结构钾。尤其在磷胁迫条件下，这些植物对钾长石中矿物结构钾的活化利用能力都显著增强，表现在矿物结构钾的净释放量显著增加。玉米和油菜对矿物钾的直接活化和利用作用，可能与磷胁迫条件下有机酸的释放有关。 |
| 关键词: 植物,根际,磷胁迫,矿物结构钾,活化 |
| DOI： |
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| 基金项目:国家自然科学基金!39570418 |
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| Effect of P-Stress on Structural K Mobilization and Utilization by Plants |
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| Abstract: |
| Under P-stress, mobilization and utilization of structural K in gneiss and feldspar by maize (Zea mays L. ND60), rape (Brassica chinensis L. ) and ryegrass(Lolium multilorum Lam. ) was significantly increased, as indicated by total K release. The mobilization and utilization of structural K by maize and rape might be attributed to release of organic acids from plant roots. |
| Key words: plantl,rhizosphere,P stress,structural K,mobilization, |
