Effects of water and nitrogen rate on grain-filling characteristics under high-low seedbed cultivation in winter wheat
文献类型： 外文期刊
第一作者： Liu, Junming
作者： Liu, Junming;Si, Zhuanyun;Zhang, Yingying;Wu, Xiaolei;Cao, Hui;Gao, Yang;Duan, Aiwang;Liu, Junming;Wu, Xiaolei;Cao, Hui;Li, Shuang;Wu, Lifeng
作者机构：
关键词： high-low seedbed cultivation; water and nitrogen; grain filling; determinate growth equation; wheat yield
期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：4.4； 五年影响因子：4.8 ）
ISSN： 2095-3119
年卷期： 2024 年 23 卷 12 期
页码：
收录情况： SCI
摘要：
A high-efficiency mode of high-low seedbed cultivation (HLSC) has been listed as the main agricultural technology to increase land utilization ratio and grain yield in Shandong Province, China. However, limited information is available on the optimized water and nitrogen management for yield formation, especially the grain-filling process, under HLSC mode. A three-year field experiment with four nitrogen rates and three irrigation rates of HLSC was conducted to reveal the response of grain-filling parameters, grain weight percentage of spike weight (GPS), spike moisture content (SMC), and winter wheat yield to water and nitrogen rates. The four nitrogen rates were N1 (360 kg ha(-1) pure N), N2 (300 kg ha(-1) pure N), N3 (240 kg ha(-1) pure N), and N4 (180 kg ha(-1) pure N), respectively, and the three irrigation quotas were W1 (120 mm), W2 (90 mm), and W3 (60 mm), respectively. Results showed that the determinate growth function generally performed well in simulating the temporal dynamics of grain weight (0.989
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