One-Time Contact Application of Controlled-Release Urea and Optimized Method Improved Rice Yield and Nitrogen Use Efficiency with 50% Nitrogen Input
文献类型: 外文期刊
第一作者: Li, Jintao
作者: Li, Jintao;Ding, Zijuan;Ma, Xiaowei;Ma, Zhiyao;Qian, Yuhong;Yao, Hongyue;Hou, Jun;Cao, Yuxian;Cao, Bing;Cao, Bing
作者机构: Yangtze Univ, Coll Agr, MARA Key Lab Sustainable Crop Prod Middle Reaches, Jingzhou 434025, Peoples R China;Yangtze Univ, Coll Life Sci, Jingzhou 434025, Peoples R China;Beijing Acad Agr & Forestry Sci, Inst Plant Nutr & Resources, Beijing 100097, Peoples R China;Beijing Engn Technol Res Ctr Slow Controlled Relea, Beijing 100097, Peoples R China
关键词: controlled-release urea; nitrogen reduction; rice; rice seedling box contact fertilization technology
期刊名称:AGRONOMY-BASEL ( 2022影响因子:3.7; 五年影响因子:4.0 )
年卷期: 2024 年 14 卷 4 期
收录情况: SCI
摘要: Excessive nitrogen application is a common phenomenon in rice production in China, which will lead to a low nitrogen utilization rate and increase farmers' production costs. In Jingzhou, Hubei Province, for two consecutive years (2021, 2022), rice was planted with nursery-box total fertilization (NBTF) technology to provide technical support for rice seedling box contact fertilization technology. The results showed that, compared with the conventional treatment, the seedling emergence rate decreased by 7.70-11.87%, but the seedling quality significantly improved and the plant height significantly increased by 4.38-6.06% in the full-heading stage after the aforementioned treatments. The leaf area index significantly increased by 16.75-34.55%, 10.04-19.30%, and 12.13-18.60% in the tiller, booting, and full-heading stages, respectively, whereas the photosynthetic rate significantly increased by 3.80-5.25% in the booting stage. The rice yield under the 50% CRU and 50% CRU + S treatments was the same as that under the FFP treatment. The rice yield under 50% CRU + BT and 50% CRU + BT + S treatments was 7.50-10.61% higher than that under the FFP treatment; nitrogen partial factor productivity increased by 96.15-123.63%. NBTF combined with Boxingtanzhuang (in Chinese) seedling trays showed an increase in yield, whereas normal seedling trays showed a stable yield. It is suggested that the seedling tray and fertilizer should be specialized in the rice seedling box, and the height of the seedling tray should be increased by 3-5 cm. At the same time, special controlled-release urea should be selected to ensure less N release before emergence and improve the seedling emergence rate so as to popularize NBTF technology in a large area.
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