Effects of Different Nitrogen Levels on Δ13C values，Physical Characters and Chemical Compositions of Flue-Cured Tobaccos Leaves

doi:10.3969/j.issn.1000-6362.2015.03.007

Abstract

Abstract: Taking Flue-cured tobacco K326, Yunyan87, Yunyan97 and Honghuadajinyuan as experiment materials, planted under natural environment condition with three different nitrogen treatments. The chemical composition of the 11th position tobacco leaves and their δ13C value, leaf mass per unit area and the photosynthesis pigment was analyzed. The results showed that the mean δ13C value of K326 and Yunyan97 with different Nitrogen treatment was higher than that of Yunyan87 and Honghuadajinyuan, particular the Yunyan 97. The tobacco alkali content of Yunyan97 was optimum among four varieties with low nitrogen treatments, moreover, the total sugar content, the reducing sugar content, the sugar alkali content and NIT/NIC of Yunyan97 were within optimum scope and in a good coordination. Evaluation on all of flue-cured tobacco was conducted according to the δ13C values describe, Yunyan97 had obvious advantage and stronger adaptive ability, which was suitable to plant under conventional fertilizer. The results could provide reference to fertilizer treatments and varieties selecting for flue-cured tobacco.

Key words: Flue-cured tobacco, Fertilization treatment, Varieties comparison, δ13C value, Physiological indices, Chemical composition

YANG Jinhan，NI Xia，YI Ke，CHEN Xu，ZHENG Wu，YU Haitao，LU Wenlin，ZHA Hongbo，GONG Shujing，YANG Tian，WANG Juan，CHEN Zongyu. Effects of Different Nitrogen Levels on Δ13C values，Physical Characters and Chemical Compositions of Flue-Cured Tobaccos Leaves[J]. Chinese Journal of Agrometeorology, 2015, 36(03): 296-305.

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