| 麦玉轮作体系中秸秆钾对土壤钾库平衡的影响 |
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| 引用本文： | 董玉良,劳秀荣,毕建杰,孙伟红.麦玉轮作体系中秸秆钾对土壤钾库平衡的影响[J].西北农业学报,2005,14(3):173-176. |
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| 作者姓名： | 董玉良 劳秀荣 毕建杰 孙伟红 |
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| 作者单位： | 1. 山东农业大学资源与环境学院,泰安,271018
2. 山东农业大学农学院,泰安,271018 |
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| 基金项目： | 国家自然科学基金资助项目(39870524) |
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| 摘 要： | 应用土壤养分状况系统研究法,对麦玉轮作体系中连续秸秆与NP化肥配施对土壤钾素肥力影响进行长期定位研究。试验表明,秸秆还田对土壤速效钾、非交换钾的影响最大,对矿物钾和全钾的影响很小。在不施任何化学钾肥14~18 a的连续耗竭状态下,秸秆还田能及时补给有效钾的损耗,但却提高了矿物钾的自然释放速率。
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| 关 键 词： | 麦玉轮作 秸秆还田 钾素肥力 |
| 文章编号： | 1004-1389（2005）03-0173-04 |
| 收稿时间： | 2005-01-24 |
| 修稿时间： | 2005年1月24日 |
Effect of Straw Potassium on Balance of Soil K in Wheat/Maize Rotation System. |
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| DONG Yu-liang,LAO Xiu-rong,BI Jian-jie and Sun Wei-hong.Effect of Straw Potassium on Balance of Soil K in Wheat/Maize Rotation System.[J].Acta Agriculturae Boreali-occidentalis Sinica,2005,14(3):173-176. |
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| Authors: | DONG Yu-liang LAO Xiu-rong BI Jian-jie and Sun Wei-hong |
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| Institution: | College of Resources and Environment, Shandong Agriculture University, Taian 271018, China;College of Resources and Environment, Shandong Agriculture University, Taian 271018, China;College of Agricurture, Shandong Agriculture University 271000, China;College of Resources and Environment, Shandong Agriculture University, Taian 271018, China |
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| Abstract: | Effect of successive straw plus NP on soil K content in wheat/maize rotation system was studied according to the system methods from soil nutrition. The results showed that the effect of straw returning on available K and non-exchangeable K were more notable than mineral K and total K. In the exhausted condition of without K for 14-18 years, straw plus NP could supply with available K timely, but speed up the natural release rate of mineral K. |
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| Keywords: | Wheat/maize rotation system Crop straw returning Balance of soil potassium |
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