中国农业气象

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内蒙古杭锦旗北部盐碱田温湿盐动态与生产利用

杨泽龙;巴彦;冯日升;白利云;鲍彩霞;李夏子;   

  1. 内蒙古自治区气象科学研究所;内蒙古杭锦旗气象局;
  • 出版日期:2010-06-10 发布日期:2010-06-10
  • 基金资助:
    中国气象局2008年气象科技扶贫项目“杭锦旗北部牧草种植改造中低产盐碱田的示范与推广”

Temperature,Humidity and Salinity Dynamic of Stalinization Land and Its Agricultural Utilization in Hangjin Banner in Inner Mongolia

YANG Ze-long1,BA Yan1,FENG Ri-sheng2,BAI Li-yun2,BAO Cai-xia2,Li Xia-zi1(1.Inner Mongolia Institute of Meteorological Science,Huhhot 010051 China;2.Meteorological Bureau of Hangjin Banner in Inner Mongolia,Hangjin 014700)   

  • Online:2010-06-10 Published:2010-06-10

摘要: 为探析水-热-盐关系以及植被对盐碱田改良的意义,利用2008年8月2日-8月6日在内蒙古杭锦旗黄河灌区盐碱田进行的试验观测数据,主要通过方差分析与典型相关分析方法对3个样地(裸地、紫花苜蓿地和玉米地)土壤温度(0-30cm土层)、湿度(0-20cm土层)、盐度(0-100cm土层)的动态变化进行了分析。结果表明,3个样地的温(度)-湿(度)-盐(度)动态基本呈现裸地>苜蓿地>玉米地的格局;0-5cm地温与耕作层(0-20cm)的土壤水分具有显著相关关系,是0-30cm土层内地温驱动水盐动态的主要热力因子;植物能够减少土壤表层积盐,并可以降低碱化度;苜蓿地比玉米地具有更低的钠吸附比值。在盐碱地区选择耐盐碱牧草品种开展草田轮作,有益于盐碱土壤的改良与利用。

关键词: 盐碱田, 土壤温度, 土壤盐度, 土壤湿度, 钠吸附比值, 杭锦旗

Abstract: Based on experiment data which conducted on salinity fields of Yellow river irrigation area in Inner Mongolia in August 2008,the dynamic change of soil temperature,moisture and salinity in three plots(i.e.bare land,planting fields with corn and alfalfa) were analyzed by using ANOVA and canonical correlation analysis(CCA).The results showed that the dynamic pattern of ground temperature,soil moisture and total salt of three plots was basically in order of bare land,alfalfa field and then corn field.With a more significant correlation with moisture dynamics,the soil temperature on 0-5cm was an main thermal factor to drive water and salty dynamic in tillage layer(0-30cm).Vegetation could mitigate salt amount in earth surface,and reduce the degree of soil alkalization.Owing to a lower sodium adsorption ratio(SAR) than corn planting,alfalfa planting with crop rotation was a good option for salinity fields.

Key words: Salinity fields, Salinity fields, Soil temperature, Soil salinity, Soil moisture, SAR, Hang-jin banner