| 长期施用钾肥对草甸土钾素形态的影响 |
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| 引用本文： | 谭德水,金继运,黄绍文,汪仁,孙文涛.长期施用钾肥对草甸土钾素形态的影响[J].中国土壤与肥料,2007(3):52-54. |
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| 作者姓名： | 谭德水 金继运 黄绍文 汪仁 孙文涛 |
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| 作者单位： | 1. 中国农业科学院农业资源与农业区划研究所/农业部植物营养与养分循环重点实验室,北京,100081
2. 辽宁省农业科学院环境资源与农村能源研究所,辽宁,沈阳,110161 |
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| 基金项目： | 中国-加拿大钾磷研究所合作项目 |
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| 摘 要： | 通过连续13年的钾肥定位试验，研究了施钾对草甸土耕层土壤钾素各形态含量和比例的影响。结果表明，长期施用钾肥较不施钾处理可以增加耕层土中水溶性钾、非特殊吸附钾、特殊吸附钾、非交换性钾的含量和在全钾中的比例，施钾量增加促进了这种状况，同时降低了矿物钾在全钾中的比例。随土层加深，大部分处理的水溶性钾、非特殊吸附钾、特殊吸附钾和非交换性钾含量和比例随之降低，而矿物钾和全钾含量相应处理却随之升高，其中施钾处理的效果明显。
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| 关 键 词： | 长期施钾 草甸土 钾素形态 |
| 文章编号： | 1673-6257（2007）03-0052-03 |
| 修稿时间： | 2006-03-28 |
Effect of long-term K application on potassium forms in meadow soil |
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| TAN De-shui,JIN Ji-yun,HUANG Shao-wen,WANG Ren,SUN Wen-tao.Effect of long-term K application on potassium forms in meadow soil[J].Soil and Fertilizer Sciences in China,2007(3):52-54. |
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| Authors: | TAN De-shui JIN Ji-yun HUANG Shao-wen WANG Ren SUN Wen-tao |
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| Institution: | 1.Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition Cychng, Ministry of Agriculture, Beijing 100081 ; 2. Researth Institute of Environmental Resource and Rural Energy Resource, Liaoning Academy of Agricultural Science, Shenyang 110161 |
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| Abstract: | Based on the long - term field experiment of K application on meadow soil, the effect of K fertilizer apphcation on the content and proportion of K was discussed. The result showed that long - term K application could increase the content and proportion of water - soluble K, non - specially adsorbed K, specially adsorbed K, non - exchangeable K in the plough layer, and decrease the proportion of mineral K in the same time. Along with the layer going to deeper, the content and proportion of water- soluble K, non - specially adsorbed K, specially adsorbed K, non - exchangeable K in most treatments decreased, and the effect was more distinct in the treatments of K application, but mineral K and total K behaved the opposite result. K fertilizer application could increase corn grain yield remarkably. |
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| Keywords: | long- term K application meadow soil potassium form |
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