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以杂交水稻威优４６为材料作旱育秧，设置常规湿润育秧作对照，研究了晚稻旱育秧的形态特征和生理生化特性．结果表明：旱育能明显促进秧苗根系生长，抑制地上部生长；旱育秧苗物质积累多，特别是ＡＢＡ和ＧＡｓ含量显著提高，根系活力、发根能力、抗旱和抗热能力强；移栽入大田后，基本无败苗和返青期，根系生长量大，活力强，光合速率和叶绿素含量高，有效穗多，结实率高，千粒重大，产量显著增加．
The hybrid rice Weiyou 46 was used as drought-tolerant seedling, and the conventional wetting seedling was set as the control. The morphological characteristics and physiological and biochemical characteristics of late rice seedling were studied. The results showed that: drought-tolerant can significantly promote the root growth of seedlings and inhibit shoot growth; dry matter seedling accumulation more material, especially ABA and GAs significantly increased root activity, hair root ability, drought and heat resistance; transplanting into After field, basically no seedling and turning green stage, root growth, vitality, photosynthetic rate and chlorophyll content, effective panicles, seed setting rate, grain weight, yield increased significantly.