| 长期定位施用化肥对作物氮素吸收利用的影响 |
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| 引用本文： | 刘强,孟凡玺,刘树堂.长期定位施用化肥对作物氮素吸收利用的影响[J].玉米科学,2012,20(1):112-114. |
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| 作者姓名： | 刘强 孟凡玺 刘树堂 |
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| 作者单位： | 青岛农业大学旱作技术实验室,山东青岛,266109 |
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| 基金项目： | 国家自然科学基金项目（30873470）、山东泰山学者岗位（旱作作物与育种学） |
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| 摘 要： | 基于连续进行33年的长期定位试验,利用15 N示踪,研究长期施用化肥对冬小麦-夏玉米轮作中氮吸收利用的影响。结果表明,长期氮磷肥配施氮素利用率最高,为55.63%,与对照相比较提高了13.2%;其次为氮磷钾肥配施,氮素利用率为55.21%;氮磷钾肥配施处理氮素损失率最低,为8.71%。长期单施氮肥和氮钾肥配施的处理氮素利用率最低,分别为36.21%、34.53%,损失率高达38.63%、38.31%。
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| 关 键 词： | 定位施肥 小麦—夏玉米轮作 氮素吸收利用 |
| 收稿时间： | 2011/3/29 0:00:00 |
Effect on Nitrogen Absorption and Utilization of Crop under Long-term Locating Fertilization |
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| LIU Qiang,MENG Fan-xi,LIU Shu-tang.Effect on Nitrogen Absorption and Utilization of Crop under Long-term Locating Fertilization[J].Journal of Maize Sciences,2012,20(1):112-114. |
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| Authors: | LIU Qiang MENG Fan-xi LIU Shu-tang |
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| Institution: | LIU Qiang,MENG Fan-xi,LIU Shu-tang(Qingdao Agricultural University,Shandong 266109,China) |
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| Abstract: | The response of nitrogen absorption and utilization of winner wheat-summer maize to long-term application of chemical fertilizers were studied, the article using the 15N tracer tests, based on 33 years long-term locating fertilization. The results showed that the absorption rate of long-term NPK fertilizer up to 55.22 percent, compared with the CK 13.2% increase. The Utilization efficiency of NP is 55.21%.The loss rate of NPK is 8.71%, and is minimum. The absorption rate of the long-term single application of N and NK are 36.21% and 34.53%. But the loss rate up to 38.63% and 38.31%. |
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| Keywords: | Locating fertilization Winner wheat-summer maize rotation Absorption and utilization of N |
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