不同生育阶段干旱胁迫下的水稻产量效应

Study on Yield Effect of Growth-stages of Rice under Drought Stress

以冀粳 1 4水稻为材料 ,研究了 5种水分胁迫下各生育阶段的产量效应。结果表明 :水分胁迫在不同生育阶段的产量效应差异显著 ;其效应由弱到强依次为 :无效分蘖期、灌浆成熟期、有效分蘖期、拔节孕穗期、开花灌浆期。

The rice cultivar Jijing 14 was used in this experiment.The yield effect of growth period was analyzed under five water stress conditions.The results showed that under the condition of water stress,the yield effects of different growth period were significantly different, the yield effects increase in accordance with the sequence of stages as unproductive-tiller,filling and ripening,productive-tiller,jointing and earing,anthesis and filling.