| 缓释尿素不同用量对土壤氮素变化状况的影响 |
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| 引用本文： | 宋勇义,车远远,于咏梅,于立芝. 缓释尿素不同用量对土壤氮素变化状况的影响[J]. 山东农业科学, 2011, 0(7): 86-88 |
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| 作者姓名： | 宋勇义 车远远 于咏梅 于立芝 |
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| 作者单位： | 1. 中国农业大学烟台研究院,山东烟台264670;烟台市牟平区果业开发中心,山东烟台264100
2. 中国农业大学烟台研究院,山东烟台,264670 |
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| 基金项目： | 中国农业大学烟台研究院资助项目(YT200722) |
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| 摘 要： | 通过田间试验，研究了缓释尿素用量与土壤氮素的变化情况。结果表明，缓释尿素对土壤全氮的含量没有影响，能够增加土壤碱解氮的含量，但是不同层次增加的幅度不同，由表层向下依次增加，说明缓释尿素容易随水向下土层迁移。土壤碱解氮的含量萌芽前至开花期明显增加，开花期到坐果期基本稳定不变，说明由于缓释尿素的缓释作用，在不追肥的情况下，能够使土壤碱解氮在坐果期仍能保持较高的水平。
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| 关 键 词： | 缓释尿素 土壤 氮素 |
Effects of Different Slow-release Urea Rates on Soil Nitrogen |
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| SONG Yong-yi,CHE Yuan-yuan,YU Yong-mei,YU Li-zhi. Effects of Different Slow-release Urea Rates on Soil Nitrogen[J]. Shandong Agricultural Sciences, 2011, 0(7): 86-88 |
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| Authors: | SONG Yong-yi CHE Yuan-yuan YU Yong-mei YU Li-zhi |
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| Affiliation: | SONG Yong-yi1,2,CHE Yuan-yuan1,YU Yong-mei1,YU Li-zhi1(1.Yantai Institute of China Agricultural University,Yantai 264670,China,2.Fruits Development Center of Muping District,Yantai 264100,China) |
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| Abstract: | The field experiment was conducted to study the relationship between application rates of slow-release urea and soil nitrogen variation.The results showed that the slow-release urea did not affect the total nitrogen content in soil,but the content of soil alkali-hydro nitrogen was increased with the deepening of soil layers,which indicated that slow-release urea could shift easily downward soil layers along with water.The alkali-hydro nitrogen content in soil increased significantly from pregerminating to f... |
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| Keywords: | Slow-release urea Soil Nitrogen |
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