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《Journal of Huazhong Agricultural University(Natural Science Edition)》 2006-03
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Effect of Combining Application of Rape-seed Cake and Chemical Fertilizer on Root Bleeding Sap Composition of Flue-cured Tobacco

SU Fan~(1)) WANG Yi~(2)) QU Xing~(3)) YANG Yue~(2)) WANG Wei~(4))GENG Ming-jian~(4)) FU Li-bo~(1)) YANG Hua~(4)) HONG Li-fang~(1))(~(1))Agricultrual Environment Institute,Yunnan Academy of Agricultural Sciences,Kunming 650205,China;~(2))Yunnan Hongta Group,Yuxi 653100, China;~(3))Yuxi Branch,Yunnan Provincial Tobacco Company,Yuxi 653100,China;~(4))College of Resources and Environment,Huazhong Agricultural University,Wuhan 430070,China;)  
The influences of chemical fertilizer,rape seed cake and their combining application on the amount and composition of root bleeding sap of flue-cured tobacco were studied under soil culture experiment.The amount of root bleeding sap reached the top at mature stage of lower leaves of flue-cured tobacco,then reduced gradually.The amount of root bleeding sap of the treatment applying fertilizer was obviously more than applying rape seed cake,the sap amount of combining application of rape seed cake and chemical fertilizer was between them.The content of nitrate nitrogen,ammonium nitrogen and free amino acid in the root bleeding sap of tobacco was the most when chemical fertilizer was applied.When rape seed cake and chemical fertilizer were together applied,it was the least when only rape seed cake was applied.The content of inorganic phosphorus,potassium and soluble sugar in root bleeding sap of tobacco applying fertilizer was lower than that applying rapeseed cake and fertilizer together or rapeseed cake only.
【Fund】: 红塔集团项目;; 云南省科委"省院省校"项目(Y0084)资助
【CateGory Index】: S572
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