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应用生态学报 ›› 2010, Vol. 21 ›› Issue (04): 945-951.

• 研究报告 • 上一篇    下一篇

咸水灌溉条件下土壤水盐分布特征

赵志才1,冯绍元2**,霍再林2,蒋静2,秦俊桃2   

  1. 1中水北方勘测设计研究有限责任公司| 天津 300222;2中国农业大学水利与土木工程学院| 北京 100083
  • 出版日期:2010-04-20 发布日期:2010-04-20

Distribution characteristics of water and salt in a spring wheat soil under brackish water irrigation.

ZHAO Zhi-cai1, FENG Shao-yuan2, HUO Zai-lin2, JIANG Jing2, QIN Jun-tao2   

  1. 1China Water Resources Beifang Investigation Design and Research Co. LTD., Tianjin 300222, China|2College of Water Conservancy &|Civil Engineering, China Agricultural University, Beijing 100083, China
  • Online:2010-04-20 Published:2010-04-20

摘要: 通过设置3种灌水量水平(100%ETc、80%ETc、60%ETc)和3种灌水水质水平(0.7、3和6 g·L-1),研究了咸水灌溉条件下春小麦120 cm土层内水分动态和盐分累积特征.结果表明:水分在农田土壤中的分布主要受灌水量和土壤质地的影响,充分灌溉使水分存贮在较深土层中,而非充分灌溉则使水分存贮在表层;在相同灌水量的条件下,土体内的盐分积累程度随着灌溉水矿化度的增大而加剧;在相同矿化度条件下,土体内的盐分含量及积盐深度随着灌水量的增加而增大.在作物整个生育期内,连续使用咸水灌溉将导致土壤积盐,且非充分灌溉较充分灌溉更易使土壤表层积盐.

关键词: 土壤水分分布, 土壤盐分累积, 咸水灌溉, 春小麦, 朱砂叶螨, 玉米自交系, 丁布, 总酚, 胰蛋白酶抑制剂, 胰凝乳蛋白酶抑制剂

Abstract: A field experiment was conducted to study the distribution characteristics of water and salt in a spring wheat soil under brackish water irrigation. Three irrigation quota (100%ETc, 80%ETc, and 60%ETc) and three water salinity levels (0.7, 3 and 6 g·L-1) were installed. The results showed that soil water distribution was affected by irrigation quota and soil texture. Sufficient irrigation made the irrigation water stored in deeper soil layers; while insufficient irrigation made the irrigation water more stored in top soil layer. Under the same irrigation quota, the salt accumulation in soil body increased with increasing water salinity; while under the same water salinity, the salt content and salt accumulation depth in soil body increased with increasing irrigation quota. Successive brackish water irrigation in the whole growth period of spring wheat induced soil salinization, and insufficient irrigation made the salt more accumulated in surface soil layer, compared with sufficient irrigation.

Key words: soil water distribution, soil salt accumulation, brackish water irrigation, spring wheat, Tetranychus cinnabarinus, Zea mays,  DIMBOA, total phenolic, trypsin inhibitor, chymotrypsin inhibitor.