| 陕西渭北苹果园土壤NO_3~-—N累积的影响因素研究 |
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| 引用本文： | 白茹,李丙智,张林森,高登涛.陕西渭北苹果园土壤NO_3~-—N累积的影响因素研究[J].果树学报,2007,24(4):411-414. |
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| 作者姓名： | 白茹 李丙智 张林森 高登涛 |
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| 作者单位： | 西北农林科技大学园艺学院,陕西杨凌,712100 |
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| 基金项目： | 引进国际先进农业科技计划(948计划) |
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| 摘 要： | 为进一步研究果园土壤硝态氮的累积及分布情况,在陕西渭北主要苹果产区分别采集了0～120cm土壤剖面样品,测定了土壤硝态氮含量,分析了不同因素对果园土壤硝态氮累积的影响。结果表明,氮肥的大量施用会造成硝态氮在土壤中的累积,而配施有机肥、地表生草、合理的种植密度均可减少硝态氮的累积量。灌溉可加速硝态氮向地下的淋洗。研究为采取有效措施控制和减少果园土壤中的硝态氮累积量提供了理论依据。
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| 关 键 词： | 苹果园 硝态氮累积 影响因素 |
| 文章编号： | 1009-9980（2007）04-410-04 |
| 修稿时间： | 2006-05-27 |
Effect of different factors on NO3--N accumulation in apple orchards in Weibei area, Shaanxi province |
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| BAI Ru,LI Bing-zhi,ZHANG Lin-sen,GAO Deng-tao.Effect of different factors on NO3--N accumulation in apple orchards in Weibei area, Shaanxi province[J].Journal of Fruit Science,2007,24(4):411-414. |
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| Authors: | BAI Ru LI Bing-zhi ZHANG Lin-sen GAO Deng-tao |
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| Abstract: | Experiment was carried out in the apple orchards located in Weibei area,the concentrated apple producing area of Shaanxi province for studying the NO3-N accumulation and distribution in the soil.Layers from 0 to 120 cm and the effects of different factors on NO3-N accumulation.The results showed the more nitrogen fertilizers applied,the more NO3-N accumulated in different soil layer;nitrogen fertilizers applied with organic fertilizer or sod culture could reduce the accumulation of NO3-N.The accumulation of NO3-N in high-density orchards was more than that in less density and good light distribution orchards.Irrigation accelerated the leaching of NO3-N. |
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| Keywords: | Apple orchard NO3-N accumulation Affecting factor |
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