微咸水灌溉对土壤EC值及冬小麦产量的影响

通过测坑试验,在“咸淡淡”、“淡咸淡”、“淡淡咸”3种微咸水-淡水交替灌溉方式和1、3、5 g/L三种微咸水矿化度水平条件下,监测并分析了各生育期灌水前后及生育期结束后土壤0~20、20~40、40~60 cm土层EC值,测定并分析了冬小麦产量及其构成因子。结果表明,整个生育期内,各层土壤EC值呈波动周期性变化趋势;微咸水-淡水交替灌溉方式主要影响土壤盐分的垂直分布,盐灌越靠前,盐分聚集层越深;灌水矿化度主要影响土壤总体EC值,随灌水矿化度增加,土壤总EC值变大。冬小麦产量和产量构成因子随灌水矿化度升高而呈减小的趋势,冬小麦的产量构成因子及产量在“咸淡淡”与“淡淡咸”2种轮灌方式下差异性显著,...

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Published inGuanʻgai paishui xuebao Vol. 36; no. 3; pp. 59 - 64
Main Author 刘宗潇 朱成立 翟亚明 郑君玉 胡淑文
Format Journal Article
LanguageChinese
Published Xinxiang City Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage 2017
Subjects
Brackish water
Crop yield
EC
Fresh water
Irrigation
Irrigation water
Mineralization
Salinity
Salinity effects
Salts
Sodium chloride
Soil analysis
Soil layers
Soil water
Soils
Vertical distribution
Wheat
Winter wheat
交替灌溉
冬小麦
微咸水
矿化度
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ISSN1672-3317

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Summary:通过测坑试验,在“咸淡淡”、“淡咸淡”、“淡淡咸”3种微咸水-淡水交替灌溉方式和1、3、5 g/L三种微咸水矿化度水平条件下,监测并分析了各生育期灌水前后及生育期结束后土壤0~20、20~40、40~60 cm土层EC值,测定并分析了冬小麦产量及其构成因子。结果表明,整个生育期内,各层土壤EC值呈波动周期性变化趋势;微咸水-淡水交替灌溉方式主要影响土壤盐分的垂直分布,盐灌越靠前,盐分聚集层越深;灌水矿化度主要影响土壤总体EC值,随灌水矿化度增加,土壤总EC值变大。冬小麦产量和产量构成因子随灌水矿化度升高而呈减小的趋势,冬小麦的产量构成因子及产量在“咸淡淡”与“淡淡咸”2种轮灌方式下差异性显著,表现为“咸淡淡”〈“淡淡咸”。
Bibliography:LIU Zongxiao1, ZHU Chengli1,2, ZHAI Yaming1,2, ZHENG Junyu1, HU Shuwen3 （1.College of Water Conservancy and Hydropower, Hohai University, Nanjing 210098, China; 2.Key Laboratory of Efficient Irrigation-Drainage and Agricultural Soil-water Environment in Southern China, Ministry of Education, Nanjing 210098, China; 3.Jiangsu Huaiyuan Supersion of Engineering Construction Co.Ltd., Huaian 223005, China）
brackish water, alternate irrigation; winter wheat; salinity levels; EC
Through winter wheat plot experiment, with three alternate irrigation modes （＂brackish water-fresh water- fresh water＂, ＂fresh water-brackish water-fresh water＂ and ＂fresh water-fresh water-brackish water＂） and three kinds of mineralization of brackish water （ 1,3,5 g/L NaCl） respectively, soil EC in 0-20 cm, 20-40 cm and 40-60 cm, yield and yield components were monitored and analyzed before and after irrigation during the growth progress. The results showed that soil EC fluctuated cyclically in different soil layers; Brackish-fresh water alte
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ISSN:1672-3317