不同灌溉制度对冬小麦产量与水分利用效率的影响

Effects of Different Irrigation Regimes on Yield and WUE of Winter Wheat

以河北黑龙港地区常用冬小麦品种石麦15和济麦22为试验材料,研究了不同灌溉制度对冬小麦产量与水分利用效率的影响。结果表明,3种灌水处理下,石麦15的产量均高于济麦22。其中石麦15灌1水处理与济麦22灌2水处理产量相当,石麦15灌1水处理与济麦22灌3水处理产量相当,石麦15表现出节水高产的优势。石麦15灌2水处理的水分利用效率最高,达20.22 kg/(mm.hm2),比灌2水的济麦22高21.9%,比灌3水的济麦22高7.4%,说明石麦15灌2水处理在所有6个处理中表现最优。

The effects of three irrigation regimes on the grain yield and water use efficiency were studied with two winter wheat cultivars in Heilonggang area,Hebei Province.The results showed that the yields of Shimai15 were higher than that of Jimai22 under three irrigation regimes.Among these,treatment of Shimai15 with one irrigation had similar yield to treatment of Jimai22 with two irrigations,and treatment of Shimai15 with two irrigations had similar yield to treatment of Jimai22 with three irrigations,Shimai15 indicated water-saving and higher yield advantages.The WUE of Shimai15 with two irrigations was the highest one which was 20.22 kg/（mm·hm^2）,and it was 21.9% higher than that of Jimai22 with two irrigations and 7.4% higher than that of Jimai22 with three irrigations.It was obvious that treatment of Shimai15 with two irrigations was the best choice among six treatments.In order to develop water-saving agriculture in Heilonggang area,it is essential to be considered to fully use of wheat cultivar＇s water-saving characters as well as reduce irrigations.