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- Title
Effects of Organic Fertilizer Application Period on Carbon and Nitrogen Metabolism in Flue-cured Tobacco Under Tobacco-Rice Rotation.
- Authors
GAO Jingjuan; ZHU Chenyu; KE Yuqin; ZHENG Chaoyuan; LI Chunying; LI Wenqing
- Abstract
To improve nutrient management and promote natural leaf ripening of flue-cured tobacco in tobacco-rice rotation area, a field experiment was designed and 4 fertilization treatments including T1 (chemical fertilizer applied in both rice season and flue-cured tobacco season), T2 (chemical fertilizer + rapeseed cake fertilizer in flue-cured tobacco season, chemical fertilizer in rice season), T3 (chemical fertilizer applied in flue-cured tobacco season, chemical fertilizer + rapeseed cake fertilizer applied in rice season) and T4 (chemical fertilizer + rapeseed fertilizer applied in both rice season and flue-cured tobacco season) were set in both rice and flue-cured tobacco season. The effects of organic fertilizer application on photosynthesis, fluorescence characteristics and activities of key enzymes in carbon and nitrogen metabolism of tobacco plants were studied. The results showed that all the indexes of tobacco plant applying rapeseed cake fertilizer were better than those applied chemical fertilizer in both seasons, and the physiological effects of tobacco plant treated with cake fertilizer in the current tobacco season were better than those in the rice season, and the physiological effect of tobacco plant treated with cake fertilizer in both tobacco and rice seasons was the best. Compared with T2, T3 and T1, the total chlorophyll content in T4 treatment increased by 15.0%, 26.6% and 45.3%, and the net photosynthetic rate in T4 treatment increased by 13.3%, 36.1% and 66.0%, respectively. The combined application of chemical and cake fertilizer in both tobacco and rice seasons could significantly increase the photosynthetic rate, promote the transformation of photosynthetic products and maintain the nitrogen metabolism level, ensure the smooth progress of various metabolic processes in tobacco plant at the late growth stage, and be more conducive to the normal mature of tobacco leaves in the field, improve tobacco curing characteristics, and promote the formation of high quality tobacco leaves, increase the income of tobacco farmers.
- Subjects
FERTILIZER application; ORGANIC fertilizers; CARBON metabolism; TOBACCO; PHOTOSYNTHETIC rates; TOBACCO farmers
- Publication
Journal of Agricultural Science & Technology (1008-0864), 2023, Vol 25, Issue 9, p157
- ISSN
1008-0864
- Publication type
Article
- DOI
10.13304/j.nykjdb.2022.0264