| 侯秀玲,张炎,李磐,王晓静,盛建东.施氮对南疆潮土硝态氮分布的影响[J].干旱地区农业研究,2006,(6):73~77 |
| 施氮对南疆潮土硝态氮分布的影响 |
| Effect of nitrogen fertilizer on fluvo-aquic soil NO-3-N distribution in Nanjiang |
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| DOI：10.7606/j.issn.1000-7601.2006.06.17 |
| 中文关键词: 棉花 土壤 硝态氮 运移 南疆 |
| 英文关键词:cotton soil nitrate-N movement Nanjiang |
| 基金项目:农业部948项目(2003-Z53)； 加拿大钾磷肥研究所项目(NMS-Xinjiang200201)； 新疆维吾尔自治区高等学校科研计划项目(FSRPHEXJ-XJEDU2004G07) |
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| 中文摘要: |
| 通过田间小区试验,对南疆潮土区不施氮、优化施氮和传统施氮下棉田土壤剖面NO-3-N分布进行动态分析。结果表明:随施氮量的增加土壤剖面NO-3-N的含量和下移深度增加;优化处理和传统处理在花期均随初花期追肥、灌水发生硝态氮淋溶,优化处理淋溶到6090 cm,传统处理由于基肥用量过大可淋溶至150~180cm,说明基肥用量和第一次灌水是影响土壤硝态氮淋溶的主要因素。总体来说,优化处理施肥较合理,它在确保农民收益的同时能够兼顾环境。 |
| 英文摘要: |
| The nitrate-N content and dynamic distribution in soil under different nitrogen fertilizer were monitored through field test.The result indicated that the content and moving depth of nitrate nitrogen increased with the increase of nitrogen fertilizer.During the cotton growth period,the leaching of nitrate nitrogen arrived in 60～90 cm in optimised treatment,whereas in traditional treatment it arrived in 150～180 cm in flowering stage because of superfluous base nitrogen fertilizer along with the irrigation in early flowering stage.That means the primary influence factors of nitrate nitrogen leaching are based on the nitrogen rate and first irrigation.Generally,the N apply rate of optimized treatment is reasonable because optimized treatment insure both the farmer's income and favorable environment. |
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