摘要
在3种不同施钙水平下,研究了超级杂交稻品种"准两优527"、"两优293"生育后期的抗倒伏能力、抗倒形态及生理性状指标变化情况。结果表明:施钙(特别是中、高量)对提高"准两优527"生育后期的抗倒伏能力作用明显,但不利于降低"两优293"成熟期的倒伏指数;超级杂交稻的抗倒伏能力品种间差异明显;"准两优527"、"两优293"生育后期的倒伏指数明显上升,但倒伏敏感期不同;单株抗折力、表观倒伏率、株高、单株生物量、茎鞘干质量、茎鞘物质输出率与倒伏指数呈显著或极显著的相关关系。
The lodging resistance and related morphological and physiological traits of two-super hybrid rice varieties Zhunliangyou 527 and Liangyou 293 at their late growth stage were investigated under three calcium application levels. The results showed that medium and high calcium application levels markedly improved the lodging-resistance of Zhunliangyou 527 at its late stage, but not benefited the decrease of the lodging index of Liangyou 293 at its ripening. growth There was a significant difference in the lodging resistance between the two varieties. The lodging index of test varieties increased obviously at their late growth stage, but their sensitive lodging stage differed. The lodging index had significant correlations with lodging resistance per plant, apparent lodging rate, plant height, aboveground biomass per plant, and dry mass and its transferring rate of stem and sheath.
出处
《生态学杂志》
CAS
CSCD
北大核心
2009年第4期632-637,共6页
Chinese Journal of Ecology
基金
国家粮食丰产工程资助项目(2004BA520A01)
关键词
水稻
抗倒
钙
rice
lodging resistance
calcium
