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JIANG Hou-long, XU Chen, WANG Dai-bin, LI Yun-ping, LI Na-jia, YANG Chao, WANG Hong-feng. Effect of Phosphorus Fertilizations on Root Growth and Physiology of Tobacco Seedlings[J]. Fujian Journal of Agricultural Sciences, 2015, 30(7): 656-661. doi: 10.19303/j.issn.1008-0384.2015.07.007
Citation:
JIANG Hou-long, XU Chen, WANG Dai-bin, LI Yun-ping, LI Na-jia, YANG Chao, WANG Hong-feng. Effect of Phosphorus Fertilizations on Root Growth and Physiology of Tobacco Seedlings[J]. Fujian Journal of Agricultural Sciences, 2015, 30(7): 656-661. doi: 10.19303/j.issn.1008-0384.2015.07.007
JIANG Hou-long, XU Chen, WANG Dai-bin, LI Yun-ping, LI Na-jia, YANG Chao, WANG Hong-feng. Effect of Phosphorus Fertilizations on Root Growth and Physiology of Tobacco Seedlings[J]. Fujian Journal of Agricultural Sciences, 2015, 30(7): 656-661. doi: 10.19303/j.issn.1008-0384.2015.07.007
Citation:
JIANG Hou-long, XU Chen, WANG Dai-bin, LI Yun-ping, LI Na-jia, YANG Chao, WANG Hong-feng. Effect of Phosphorus Fertilizations on Root Growth and Physiology of Tobacco Seedlings[J]. Fujian Journal of Agricultural Sciences, 2015, 30(7): 656-661. doi: 10.19303/j.issn.1008-0384.2015.07.007
Effect of application of varied amounts of phosphorus(P)on the growth and physiological characteristics of the seedlings of flue-cured tobacco K326 was studied.It was found that the length,tip,surface area,volume and rigor of the roots increased with increasing P at low levels.The activities of POD,PPO,PAL and stress resistance also increased significantly(P<0.01).In addition,the P fertilizations enhanced the chlorophyll content and net photosynthetic rate,as well as the assimilating capability of the seedlings.The amount of P appropriate for the seedling growth on a floating bed was determined to be 15-18 mg·plant-1.At this rate,the development of tobacco seedlings was shown healthy with strong roots,highly resistant to stresses and diseases,and desirable photosynthetic functions.
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