The Influence of Different Amounts of Nitrogen Application on the Growth and Physiological Characteristics of Tobacco Seedlings
This study investigated the influence of the application of different amounts of nitrogen on the growth and physiological characteristics of tobacco seedlings by studying flue-cured tobacco K326.The appropriate amount of nitrogen fertilizer needed for tobacco seedlings grown in floating beds was determined.Results showed that applying small amount of nitrogen increased the number of tobacco seedling roots and improved root activity,thus enhancing root adsorption.Moreover,it also significantly increased the activity of resistance-related peroxidase,polyphenol oxidase,and phenylalanine and reinforced the resistance of tobacco seedlings to pathogens.Applying appropriate amount of nitrogen could significantly increase the photosynthetic rate of tobacco seedling leaves,intercellular CO2 content,transpiration rate,and water use efficiency.The amount of nitrogen appropriate in the process of growing tobacco seedlings on a floating bed was 6–11 mg/plant.This nitrogen concentration is conducive to the growth of healthy tobacco seedlings with strong roots and resistance.
Nitrogen application Tobacco seedling Growth and development Physiological characteristics
Jiang Houlong Liu Shuduan Xu Chen Wang Daibin Wang Hongfeng Yang Chao Chen Yiyin
Chongqing Tobacco Science Research Institute,ChongQing 400715,China Beibei Tobacco Company of Chonqing,Chongqing 400700,China
国内会议
北京
英文
1-15
2016-11-01（万方平台首次上网日期，不代表论文的发表时间）