Effects of Urea-nitrogen Level on Nutritional Growth and Physiological Characteristics of Flue-cured Tobacco Seedlings in the Floating System

doi:10.7668/hbnxb.2008.01.028

Abstract

Abstract: The study was conducted on effects of different urea2nitrogen levels on nutritional growth and physiologicalcharacteristicsof tobacco seedlings in the floating system,in the experimental station of Henan Agricultural Universityduring 2001 - 2002. The results showed that it had no bad effects on nutritional growth and physiological characteristics oftobacco seedlings in the floating system for the treatment of 15 % urea2nitrogen. When the contents of urea2nitrogen were75 %,tobacco seedlings growth was obviously restrained,photosynthesis and the NR activity reduced,the root absorbing a2bility dropped than CK.

Key words: Flue2cured tobacco, Floating system, Urea2nitrogen level, Physiological characteristics

CLC Number:

S572.01

XI Xiang-yin, CHEN Yi-yin, LIU Guo-shun, SHI Xiang-dong. Effects of Urea-nitrogen Level on Nutritional Growth and Physiological Characteristics of Flue-cured Tobacco Seedlings in the Floating System[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(1): 128-132. doi: 10.7668/hbnxb.2008.01.028.

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