Effects of water and nitrogen coupling on growth, physiology and yield of rice

Water and nitrogen fertilizer are two essential factors for quality and yield formation of rice. Experimental study was carried out to investigate the effects of water and nitrogen fertilizer coupling on yield-related factors, such as growth (height), physiological indicators (chlorophyll and leaf a...

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Bibliographic Details
Published in:International journal of agricultural and biological engineering 2019-05, Vol.12 (3), p.60-66
Main Authors: Li, Yuanyuan, Shao, Xiaohou, Li, Daoxi, Xiao, Menghua, Hu, Xiujun, He, Jing
Format: Article
Language:English
Subjects:
Agricultural production
Agriculture
Chlorophyll
Coupling
Crop production
Crop yield
Environmental studies
Fertilization
Fertilizer application
Fertilizers
Grain
Indicators
Irrigation
Leaf area
Leaf area index
Leaves
Nitrogen
Nutrients
Organic fertilizers
Oryza
Physiological effects
Physiology
Plant growth
Regression analysis
Rice
Studies
Transplantation
Variance analysis
Water control
Water shortages
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Summary:Water and nitrogen fertilizer are two essential factors for quality and yield formation of rice. Experimental study was carried out to investigate the effects of water and nitrogen fertilizer coupling on yield-related factors, such as growth (height), physiological indicators (chlorophyll and leaf area index (LAI)) and yield composition indicators (productive panicles, thousand grain weight and total grains per panicle). Results showed that, the height difference under two irrigation regimes was not significant, and it showed no difference until the tillering stage (p> 0.05). The water control method for controlled and mid-gathering irrigation (CMI) was favorable for nutrients converting to rice grain. Meanwhile the height difference for CMI and conventional irrigation (CVI) was the biggest at 80 d after rice transplantation. Variance analysis showed the effect of fertilization on height was significant (p
ISSN:1934-6344
1934-6352
DOI:10.25165/j.ijabe.20191203.4060