Effect of Different Organic Matter on Growth and Flue-cured Tobacco Quality under Same Carbon-nitrogen Ratio Value

With sucrose,starch,cellulose,fulvic acid etc.organic matter to regulate the soil carbon-nitrogen ratio value as 20,the effects of organic materials were studied on the growth,physiological characteristics and chemical components of flue-cured tobacco(Nicotiana tabacum L.) by the method of pot experiment.The result indicated that the different organic matter could promote the growth of flue-cured tobacco,and also increase the chlorophyll content of flue-cured,with more remarkable effects in sucrose and fulvic acid treatments.In maturity stage,different organic matter treatments could decline the content of leaves chlorophyll and the activities of nitrate reductase and invertase of leaves.The amylase activity was higher than that of flourishing growth stage,which promoting the starch decomposition and translation and increasing the single leaf weight of flue-cured.The organic matter could increase flue-cured leaves' N,P and K content and accumulation,and the effects of sucrose and fulvic acid treatment were better.And they also remarkably increased flue-cured leaves' total sugar,and reduced sugar and nicotine content,and declined starch content.And the sucrose treatment was better among all treatments.The sugar treatment was the best treatment on the aroma component total content in tobacco leaves,and the content of the aroma component was in the order of sugar treatment HA treatment starch treatment CK fiber treatment,and the kinds of preferential aroma matters of sugar treatment were the maximum,and followed by HA treatment.