]*>","")" /> Research on the Spatial Distribution Characteristic of NH4+-N in Cotton Field Soil under-Membrane Drip Irrigation and Subsurface Drip Irrigation
Xinjiang Agricultural Sciences

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Research on the Spatial Distribution Characteristic of NH4+-N in Cotton Field Soil under-Membrane Drip Irrigation and Subsurface Drip Irrigation

DAI Cui-rong;JIANG Yi-juan;ZHENG De-ming   

  • Received:2007-05-25 Revised:2007-05-25 Online:2007-05-25 Published:2007-05-25

膜下滴灌和地下滴灌棉田土壤NH4+-N空间分布特征研究

戴翠荣;姜益娟;郑德明   

  1. 塔里木大学植物科技学院,新疆阿拉尔,843300





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.