赣抚平原灌区双季稻优化灌溉方式研究

Research on the Intensifying Irrigation Modes of Double Season Rice in Irrigation Areas of Ganfu Plain

采用田间对比试验的方法,测定双季早、晚稻的耗水量,研究2012年赣抚平原灌区不同灌溉方式下双季早、晚稻的水量与产量之间的关系。结果表明,间歇灌溉方式下早、晚稻本田期的腾发量、地下渗漏量、作物系数均低于淹水灌溉;与淹水灌溉方式相比,早、晚稻间歇灌溉处理本田期的耗水量分别减少4.35%和4.61%,作物系数(Kc)分别减少4.00%和3.45%,水分利用效率分别提高1.37%和2.96%,产量分别增加3.30%和1.40%。

By comparing the field experiments,we determined the water consumption of double-season rice,did research on the relationship between the water yield and rice yield under the different irrigation modes in Ganfu Plain Irrigation Area in 2012.The results show that,the evapotranspiration,ground leakage and crop coefficients double season rice under the intermittent irrigation are lower than the treatment of submergence irrigation.Compared with the way of the submergence irrigation,the water consumption of early rice was reduced by 4.35 ％ and the water consumption of late rice was reduced by 4.61％ under the intermittent irrigation,then the crop coefficients （Kc） were decreased by 4％ and 3.45％ respectively.Water use efficiency was raised by 1.37％ and 2.96％,the double season rice yield was increased by 3.30％ and 1.40％.