在不同灌溉方式条件下,土壤含水量出现差异,造成对稻株水分供应的不同影响。试验结果表明,在亏水较重、时间较长的情况下,杂交水稻产量明显减少,稻米品质下降。减产的原因主要是每穗谷粒数少。米质主要是加工品质、蛋白质含量降低及胶糊化变劣。长期湿润灌溉由于使土壤沉降收缩,造成含水量长期偏低,对杂交水稻产量及品质不利。 Under different irrigation methods, soil moisture content differences, resulting in different effects on water supply of rice plants. The results showed that the yield of hybrid rice decreased significantly and the quality of rice decreased under heavy waterlogging and long time. The main reason for the reduction of grain yield per panicle is small. The quality of rice is mainly processing quality, reduced protein content and plastic paste worse. Long-term wet irrigation due to soil settlement shrinkage, resulting in long-term low water content, yield and quality of hybrid rice adversely.