关键词: 水稻, 水分胁迫, 分蘖动态, 产量

Abstract: A field experiment was carried out to explore the effects of different irrigation method on tillering ability and yield of rice. The results showed that the better irrigation conditions would gain more tillerings and effective panicles and higher yields of rice. During the whole growth period, intermittent irrigation and stress irrigation had great effects on tillering ability and yield of rice. Under the condition of the shortage of water resources in Ningxia, the rice planting area should be controlled to ensure the limited water resources could be fully used by adjusting the planting structure, increasing the rotation area and prolonging the rotation cycle. In addition, improving the water conservancy facilities is also a better way to reduce the leakage and improve the utilization efficiency of water resources.

Key words: rice, water stress, tillering dynamics, yield