The results showed that the CRNF could increase the root dry weight, root length, and root length density, while the root radius became smaller during later growth stages of hybrid rice.

• 控释氮肥中，氮的逐渐释放，可减少具有强烈伤害的活性氧产物速率及其累积数量，提高活性氧清除酶的活性，在很大程度上延缓了杂交水稻生育后期根系的衰老和吸氮能力的衰退。