多阶段受涝渍综合影响的农田排水指标试验研究

Research on the Criteria of Farmland Drainage under the Influence of Combined Controlling of Surface and Subsurface Water Logging in Several Phases of Cotton

通过对棉花2年(2003～2004年)的涝渍兼治农田排水试验,研究了作物在全生育阶段均受涝渍影响的农田排水指标,还对多阶段涝渍共同作用下的作物水分生产函数进行了研究.通过对2年的实测数据的分析可以看出:用涝渍共同作用下的农田排水指标与棉花的相对产量之间有较好的相关关系,并对各生育阶段对涝渍的敏感性进行了排序,可供涝渍综合影响下排水系统的设计与运行管理参考.

Trough two years （2003-2004） experimentation on combined controlling of surface and subsurface water logging in cotton, the indexes of combined controlling of surface and subsurface water logging in several phases of cotton and the related crop water production functions were studied in this paper; Based on the analysis of the data of two years, it can be found that the correlation of crop yield and the indexes of combined controlling of surface and subsurface water logging is very satisfied. The sensitivity in four phases of cotton is ranked, which is helpful for the design and for operation ＆ maintenance of the drainage project for the combined controlling of surface and subsurface water logging.