不同矿化度的微咸水滴灌对红枣根区土壤碱解氮的影响

干旱区研究 ›› 2013, Vol. 30 ›› Issue (3): 424-429.

不同矿化度的微咸水滴灌对红枣根区土壤碱解氮的影响

李发永¹, 王兴鹏¹, 林杰², 李宁³

1. 塔里木大学水利与建筑工程学院，新疆阿拉尔 843300； 2. 喀什地区水利水电勘测设计院，新疆喀什 844000；
3 .新疆生产建设兵团灌溉中心试验站，新疆乌鲁木齐 830002

收稿日期:2012-06-11 修回日期:2012-09-06 出版日期:2013-05-15 发布日期:2013-05-16
作者简介:李发永（1982-），男，讲师，主要从事极端干旱区农业水土环境方面的研究工作.E-mail： lisen8279@163.com
基金资助:
国家自然基金项目（51169024，31060084）；水利部公益性行业专项（201101050）

Effect of Drip Irrigation with Brackish Water with Different Salinities on Soil Alkali-hydrolyzable Nitrogen Content in Rhizosphere of Ziziphus jujuba Trees

LI Fa-Yong¹, WANG Xing-Peng¹, LIN Jie², LI Ning³

1. College of Water Resources and Architectural Engineering, Tarim University, Aral 843300, Xinjiang, China;
2. Kashgar Institute of Water Resources and Hydropower Survey and Design, Kashgar 844000, Xinjiang, China;
3. Experiment Station of Irrigation Center, Xinjiang Corps of Production and Construction, Urumqi 830002, China

Received:2012-06-11 Revised:2012-09-06 Published:2013-05-15 Online:2013-05-16

摘要/Abstract

摘要： 采用高矿化度的咸水与淡水按一定比例进行混合灌溉，分析不同矿化度的微咸水滴灌对枣树根区土壤碱解氮的影响模型。结果表明：当枣树根区土壤碱解氮的运移转化时间相同时，随着灌溉水矿化度的增加，土壤碱解氮的含量也随之增加，变化量越低，转化率越小。当矿化度相同时，土壤碱解氮平均值随运移转化时间先增大后减小，碱解氮的变化量呈递增趋势，而碱解氮变化率却呈现递减趋势。在分析不同矿化度的微咸水对土壤碱解氮影响的基础上，建立了微咸水的矿化度、碱解氮的运移转化时间与土壤碱解氮平均含量、变化量以及变化率之间的相互定量关系，并得到了相应的回归方程。

关键词: 碱解氮, 矿化度, 微咸水, 滴灌, 红枣（Ziziphus jujuba）, 枣树根区, 影响模型

Abstract: This paper analyzed the effect of drip irrigation with brackish water with different salinities on the content of soil alkali-hydrolyzable nitrogen in rhizosphere of Ziziphus jujuba trees based on the experiment of irrigation with mixed salty water and fresh water. The results showed that the content of soil alkalihydrolyzable nitrogen in rhizosphere of Z. jujuba trees was increased with the increase of salinity of irrigation water when the migration and transformation time of soil alkali-hydrolyzable nitrogen was the same. The average value of soil alkali-hydrolyzable nitrogen content was increased at first and then decreased with the migration and transformation time of soil alkalihydrolyzable nitrogen when the salinity of irrigation water was the same. Under the same salinity of irrigation water, the change extent of soil alkali-hydrolyzable nitrogen content was in an increase trend, but the change rate was in a decrease trend. Based on analyzing the effect of irrigation brackish water with different salinities on soil alkali-hydrolyzable nitrogen content, the quantitative relationships among the salinity of brackish water and the migration and transformation time, average content, change extent and change rate of soil alkalihydrolyzable nitrogen were developed, and the regression equations were also derived in this study.

Key words: alkali-hydrolyzable nitrogen, salinity, brackish water, drip irrigation, rhizosphere of Ziziphus jujuba trees, effect model

李发永, 王兴鹏, 林杰, 李宁. 不同矿化度的微咸水滴灌对红枣根区土壤碱解氮的影响[J]. 干旱区研究, 2013, 30(3): 424-429.

LI Fa-Yong, WANG Xing-Peng, LIN Jie, LI Ning. Effect of Drip Irrigation with Brackish Water with Different Salinities on Soil Alkali-hydrolyzable Nitrogen Content in Rhizosphere of Ziziphus jujuba Trees[J]. , 2013, 30(3): 424-429.

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