王毅勇, 杨青, 刘振乾. 三江平原典型低湿地雨养农田水分特征[J]. 中国生态农业学报(中英文), 2001, 9(1): 43-45.
引用本文: 王毅勇, 杨青, 刘振乾. 三江平原典型低湿地雨养农田水分特征[J]. 中国生态农业学报(中英文), 2001, 9(1): 43-45.
WANG Yi-Yong, YANG Qing, LIU Zhen-Qian. Water characteristics of typical wetlands in the Sanjiang Plain[J]. Chinese Journal of Eco-Agriculture, 2001, 9(1): 43-45.
Citation: WANG Yi-Yong, YANG Qing, LIU Zhen-Qian. Water characteristics of typical wetlands in the Sanjiang Plain[J]. Chinese Journal of Eco-Agriculture, 2001, 9(1): 43-45.

三江平原典型低湿地雨养农田水分特征

Water characteristics of typical wetlands in the Sanjiang Plain

  • 摘要: 根据农田土壤水分要素实测资料,结合年度气象因素分析了三江平原大豆田水分收支及生长季农田土壤水分盈亏状况。结果表明,正常年份作物生育期内自然降雨基本能满足大豆蒸散耗水需求;发生季节性干旱且生育期降水与正常年份持平但分配不均时,大豆生长受到阶段性水分胁迫,农田水分收支平衡;若生育期降水量比正常年份少则大豆生长受到严重水分胁迫,自然降雨不能满足作物需水量。近年,该区季节性干旱频繁发生,研究农田水分平衡和区域水资源有效利用是很重要的。

     

    Abstract: According to the field experiments and the climate data in Sanjiang Plain wetland,the profit and loss of soil water in soybean field were analyzed.The results showed that the natural rainfall could meet the needs of soybean water consumption in normal years and the growth of soybean would suffer from water stress in arid season.The seasonal drought has taken place here frequently in recent years.So it is very important to study water balance and effective utilization of regional water resources.

     

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