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[目的]研究头季稻植株性状与头季稻收割前再生芽活芽率、再生稻最高苗母茎出苗率的关系。[方法]以18个近年通过审定的杂交中稻组合为试验材料,通过相关指标的测定和数据的统计分析,对头季稻植株性状与头季稻收割前再生芽活芽率、再生稻最高苗母茎出苗率的关系进行了研究。[结果]头季稻株高偏矮和收割指数偏低是头季稻成熟期再生芽活芽率较高组合的重要特征;降低株高和提高头季稻成穗率有利于再生芽出苗。[结论]该研究结果为水稻强再生力品种选育提供了科学依据。
[Objective] The research aimed to study the relationship between the characters of first crop of paddy and the percentage of viable buds of rehmannia before harvest and the emergence rate of top seedling of rejuvenated rice. [Method] With 18 validated medium hybrid rice combinations tested in recent years as test materials, the relative traits and statistical analysis of the data were used to analyze the correlation between the traits of first crop of paddy and the percentage of viable buds of rehmannia before heading, The relationship between stem emergence rate was studied. [Result] The results showed that the lower plant height and lower harvest index in the first season were the important characteristics of the higher combination of high percentage of viable buds in the ripening stage of the first season rice. Reducing the plant height and increasing the ear ratio of the first season rice were beneficial to the emergence of regenerated shoots. [Conclusion] The results of this study provided a scientific basis for breeding of strong regenerative rice varieties.