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为探索洪涝胁迫造成水稻减产的生理机制，以杂交稻威优４６（ Ｖ４６）为材料，采用３ 因素５ 水平正交组合设计，研究了不同淹水处理对稻株内磷、钾含量及其与水稻产量关系的影响．结果表明，淹水条件下稻株内磷、钾含量下降，并随淹水深度、淹水时间的增加而降低，其下降程度与稻谷产量之间存在显著相关性．
In order to explore the physiological mechanism of rice yield reduction caused by flood stress, the orthogonal design of 3-factor-5 hybrid rice was used to study the effects of flooding treatment on the contents of P and K, Effect of rice yield relationship. The results showed that the contents of P and K in rice plants decreased under flooding conditions, and decreased with the increase of flooding depth and flooding time. There was a significant correlation between the decreasing extent and the yield of rice.