中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > Effects of seedling age on the growth stage and yield formation of hydroponically grown long-mat rice seedlings 农业科学学报 (英文) 2020,19 (7)
Position: Home > Articles > Effects of seedling age on the growth stage and yield formation of hydroponically grown long-mat rice seedlings Journal of Integrative Agriculture 2020,19 (7)

Effects of seedling age on the growth stage and yield formation of hydroponically grown long-mat rice seedlings

作  者：
Li Yu-xiang;Liu Yang;Wang Yu-hui;Ding Yan-feng;Wang Shao-hua;Liu Zheng-hui;Li Gang-hua
单  位：
Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Modern Crop Prod, Natl Engn & Technol Ctr Informat Agr, Key Lab Crop Physiol & Ecol Southern China, Nanjing 210095, Peoples R China;Shihezi Univ, Agr Coll, Key Lab Oasis Ecoagr Xinjiang Prod Construct Grp, Shihezi 832003, Peoples R China
关键词：
rice (Oryza sativa L.);seedling age;growth stage;yield;photosynthetic matter production
摘  要：
Understanding the characteristics of rice productivity is of great importance for achieving high yield formation. However, such traits have not yet been studied for different ages of hydroponically grown long-mat rice seedlings (HLMS), which constitutes a new method of seedling cultivation. Field experiments were conducted to evaluate the effects of seedling age on the growth stage, photosynthesis characteristics, dry matter production, and yield of HLMS. A conventional japonica rice cultivar (Wuyunjing 24) and an indica hybrid rice cultivar (6 Liangyou 9368) were used as test materials. The results showed that the whole phase was shortened by 13-15 days for young seedlings (13-day-old) compared with old seedlings (27-day-old), which occurred because the growth process accelerated with the transplantation of young seedlings. As seedling age increased, the dry matter weight of stems of individual plants and of the population increased at the transplanting stage but decreased at the maturity stage (MS). Compared with that of 27-day-old seedlings, the average ratio of panicle weight to total plant dry weight of 13-day-old seedlings during a 2-year period increased by 3.71% for Wuyunjing 24 and by 3.78% for 6 Liangyou 9368 at the MS. Moreover, as seedling age increased, the leaf area index and photosynthetic potential decreased for both cultivars, and the photosynthetic rate markedly decreased at the heading stage (HS). With the exception of that of Wuyunjing 24 from the jointing stage to the HS in 2014, the crop growth rate was higher for young seedlings than for old seedlings. Grain yield significantly decreased with seedling age, but no significant difference was detected between the 13- and 20-day-old seedlings for either cultivar. Therefore, equilibrious and high biological yield formation, vigorous growth in the late stages, and high photosynthetic production capacity are important characteristics and causes of the efficient and sustainable output of photosynthetic systems and for achieving high yield formation in young transplanted seedlings (13-20-day-old).

相似文章

PDF下载 PDF预览
导出引用
计量
文章访问数: 9
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46