| 棉田滴灌水盐模型及动态变化规律 |
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| 引用本文： | 张力平,陈新明,蔡焕杰.棉田滴灌水盐模型及动态变化规律[J].灌溉排水学报,2008,27(2). |
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| 作者姓名： | 张力平 陈新明 蔡焕杰 |
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| 作者单位： | 1. 新疆建设兵团农一师设计院,新疆,阿克苏,843000
2. 西北农林科技大学,陕西,杨凌,712100 |
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| 基金项目： | 国家自然科学基金
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国家农业科技成果转化基金 |
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| 摘 要： | 建立了棉田滴灌条件下土层盐分平衡方程,对不同盐渍程度的棉田土壤水盐动态变化进行了初步研究。结果表明,滴灌能够降低地下水和土壤中的总盐含量,使地下水中的总盐含量保持在3.0g/L左右,土壤中CI-和SO42-含量变化趋势和总盐含量变化一致;土壤含盐量主要集中土壤表层0～25cm,0～100cm土壤含盐量呈指数函数关系,经模型验证与实测值较为吻合;土壤的含盐量直接影响棉花的出苗率、生长发育和生理特性,进而影响棉花的产量和品质。研究为土壤盐碱化防治和棉田水分管理提供科学依据。
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| 关 键 词： | 膜下滴灌 水分 盐分 动态变化 棉花 |
Experimental Research on the Soil Water-salt Model and Transport of Saline in Cotton Field under Drip Irrigation |
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| ZHANG Li-ping,CHEN Xin-ming,CAI Huan-jie.Experimental Research on the Soil Water-salt Model and Transport of Saline in Cotton Field under Drip Irrigation[J].Journal of Irrigation and Drainage,2008,27(2). |
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| Authors: | ZHANG Li-ping CHEN Xin-ming CAI Huan-jie |
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| Institution: | ZHANG Li-ping1,CHEN Xin-ming2,CAI Huan-jie2(1.Xinjiang Crops 1st Division Investigation , Design Institute,Akesu 843300,China,(2.Northwest Sci-Tech University of Agriculture , Forestry,Yangling 712100,China) |
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| Abstract: | In order to lower the salinity to cotton produces and enhance water use efficiency in south Xinjiang,we experiment on cotton field of drip irrigation in Alar of south Xinjiang.Based on experimental data,the variation laws of ground water salt content and level and soil salt content were analyzed.The empirical formulae for calculating the soil salt content were presented etc.The results show that the groundwater salinity and soil salinity was reduced and the groundwater salinity was keep 3.0 g/L under drip i... |
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| Keywords: | drip irrigation soil water content soil salinity dynamic change cotton |
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