| 膜下滴灌和地下滴灌棉田土壤NH_4~+-N空间分布特征研究 |
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| 引用本文： | 戴翠荣,姜益娟,郑德明.膜下滴灌和地下滴灌棉田土壤NH_4~+-N空间分布特征研究[J].新疆农业科学,2007,44(5):608-612. |
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| 作者姓名： | 戴翠荣 姜益娟 郑德明 |
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| 作者单位： | 塔里木大学植物科技学院,新疆阿拉尔,843300 |
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| 基金项目： | 塔里木大学校科研和教改项目 |
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| 摘 要： | 以田间试验为基础,从时间、垂直和水平空间分布的角度对膜下滴灌、地下滴灌棉田土壤铵态氮含量进行了分析。结果表明,两种不同节水灌溉方式下,棉田土壤铵态氮含量随生育期的变化特征、垂直分布特征和水平分布特征均有异同点。0~5 cm土层铵态氮含量最高,35~55 cm含量普遍较低。水平方向土壤铵态氮随滴灌水扩散,分布在离滴灌带40 cm左右。
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| 关 键 词： | 膜下滴灌 地下滴灌 铵态氮 空间分布 |
| 文章编号： | 1001-4330（2007）05-0608-05 |
| 收稿时间： | 2007-01-20 |
| 修稿时间： | 2007年1月20日 |
Research on the Spatial Distribution Characteristic of NH4+-N in Cotton Field Soil under-Membrane Drip Irrigation and Subsurface Drip Irrigation |
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| DAI Cui-rong,JIANG Yi-juan,ZHENG De-ming.Research on the Spatial Distribution Characteristic of NH4+-N in Cotton Field Soil under-Membrane Drip Irrigation and Subsurface Drip Irrigation[J].Xinjiang Agricultural Sciences,2007,44(5):608-612. |
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| Authors: | DAI Cui-rong JIANG Yi-juan ZHENG De-ming |
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| Institution: | College of Plant Science and Technology, Tarim University ,Alar Xinjiang 843300, China |
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| Abstract: | Based on field experiment,the content of NH4+-N in cotton field soil of drip irrigation under membrane and subsurface drip irrigation is analyzed from the angles of time,level and vertical spatial distribution in this paper.The result showed that,under two different ways of water-saving irrigation,the content of NH4+-N in cotton field soil differs along with the characteristics of the change in duration period,the vertical spatial distribution and horizontal distribution.The content of NH4+-N in 0～5 cm soil layer is the highest but lower in 35～55 cm layer.NH4+-N in soil in horizontal direction spreads along with the direction of drip irrigation water,which is mainly distributed away from about 40 cm of drip irrigation zone. |
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| Keywords: | drip irrigation under membrane subsurface drip irrigation NH4 -N spatial distribution |
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