摘要： 以北方粳稻品种东稻4、长白9为材料,研究了在苏打盐碱土壤种植条件下东稻4、长白9的生长发育特性及穗部性状。结果表明:在完全相同条件下种植,与吉林省主推品种长白9相比,东稻4地上、地下生物量高且活秆成熟,叶片比叶重高且叶片退化晚,根系发达且退化慢;穗部性状研究发现:与长白9相比,东稻4的1次枝梗数多、1次枝梗实粒数多、2次枝梗结实率高、千粒质量大可能均为东稻4在苏打盐碱水田种植条件下产量较高的原因。

关键词: 水稻, 盐碱, 生长发育, 穗部性状, 产量

Abstract: Rice varieties of Dongdao 4 and Changbai 9 were used to study the growth and development characteristics and panicle traits planted in saline lkaline soil. The results showed that compared with Changbai 9,which is the chief rice variety planted in Jilin Province,both the aboveground and underground biomass of Dongdao 4 were heavier with the plant still alive when maturing. Besides,the specific leaf weights of main functional leaves of Dong-dao 4 were significantly higher whose leaves were still green long after harvested. What's more,Dongdao 4 had a stronger root system which degenerated later while planted in the same condition. The panicle traits analysis results showed that, with more primary branches,more fulfilled grains in the primary branches, higher seed setting rate of the secondary branches, heavier 1000-rains weight, Dongdao 4 had superiority in the panicle traits especially under saline-lkaline stress.

Key words: Rice, Salinity and sodicity, Growth and development, Panicle traits, Yield

中图分类号: 

• S511.01