| 长期施肥土壤钾有效性与腐殖质组分相关性研究 |
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| 引用本文： | 王振宙,王改兰,张亮,聂斌,段建南,杨艳菊,熊静.长期施肥土壤钾有效性与腐殖质组分相关性研究[J].山西农业大学学报(自然科学版),2011,31(3):200-204. |
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| 作者姓名： | 王振宙 王改兰 张亮 聂斌 段建南 杨艳菊 熊静 |
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| 作者单位： | 湖南农业大学 资源环境学院,湖南长沙,410128 |
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| 基金项目： | 国家自然科学基金项目(49971040); 湖南农业大学人才引进基金项目(01YJ02) |
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| 摘 要： | 为明确长期施用不同肥料对栗褐土钾有效性的影响,利用20 a的长期定位试验比较了8种施肥处理的土壤速效钾、缓效钾含量,并分析了二者与土壤腐殖质组分间的关系。结果表明:与不施肥相比,长期单施氮肥和氮磷配施土壤速效钾、缓效钾含量以及速效钾与缓效钾的比例、速效钾和缓效钾占全钾的比例均无显著差异;施用有机肥的5个处理(M、M1N、M1NP、M2N、M2NP)土壤速效钾和缓效钾含量极显著高于对照,速效钾与缓效钾的比例、速效钾和缓效钾占全钾的比例大幅度提高,施高量有机肥的2个处理(M2N、M2NP)效果更佳;土壤速效钾和缓效钾含量与腐殖质总量及其组分间均呈极显著的线性正相关。对于长期以来几乎不施钾肥的栗褐土来说,坚持施用有机肥是提高土壤供钾能力的有效途径。
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| 关 键 词： | 长期施肥 速效钾 缓效钾 腐殖质组分 相关分析 |
The Effectiveness of Potassium and Its Correlation with Humus Fractions in Castano-cinnamon Soils under the Long-term Fertilization |
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| WANG Zhen-zhou,WANG Gai-lan,ZHANG Liang,NIE Bin,DUAN Jian-nan,YANG Yan-ju,XIONG Jing.The Effectiveness of Potassium and Its Correlation with Humus Fractions in Castano-cinnamon Soils under the Long-term Fertilization[J].Journal of Shanxi Agricultural University,2011,31(3):200-204. |
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| Authors: | WANG Zhen-zhou WANG Gai-lan ZHANG Liang NIE Bin DUAN Jian-nan YANG Yan-ju XIONG Jing |
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| Institution: | WANG Zhen-zhou,WANG Gai-lan,ZHANG Liang,NIE Bin,DUAN Jian-nan,YANG Yan-ju,XIONG Jing(College of Resources and Environment,Hunan Agricultural University,Changsha Hunan 410128,China) |
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| Abstract: | To clarify the effects of long-term application of fertilizers on the potassium availability in castano-cinnamon soils,the contents of readily and slowly available potassium were compared between the 8 treatments in the experiment of long-term fertilization after 20 years,and the relationship of the 2 contents of potassium with soil humus fractions were probed.The results showed that there were no significant differences in the contents of readily and slowly available potassium,in the ratio of readily to sl... |
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| Keywords: | Long-term fertilization Readily available potassium Slowly available potassium Humus fractions Correlation analysis |
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