作　　者： ; ; ;

机构地区： 华南农业大学农学院

出　　处： 《华南农业大学学报》 2005年第2期1-4,共4页

摘　　要： 通过大田试验与网袋法相结合,研究了目前生产上推广的10个典型水稻品种群体根系特征与地上部及产量的相关关系.结果表明:根质量在各生育期均与地上部质量、总质量呈显著或极显著正相关关系,根活力与分蘖期地上部各性状和成熟期产量呈显著正相关关系,而抽穗期和成熟期的根冠比均与产量呈极显著负相关关系,相关系数分别达- 0 86 16和- 0 8890 .以产量最大化为目标。 Ten typical rice varieties were selected to study the relationships between the characteristics of root system and aboveground parts through field experiments and field root bag methods. The results showed that root mass had positive correlation with aboveground mass and total mass at different growth stages. The oxidizing activities of root had significant correlation with aboveground performance at tillering stage and rice yield at ripening stage. However, root/shoot ratio had negative significant correlation with yield at heading and ripening stage, the correlation coefficients were (-0.861 6) and (-0.889 0) respectively. In order to obtain maximize yield, the results implied that reduction of root system to a reasonable size may be an effective way to improve the yield of crop.

关 键 词： 水稻 根系 产量 地上部 生长发育 相关系数

领　　域： [农业科学]