Planting Density On Yield And Quality Of Flue-cured Tobacco Grouth In Anshun

This article is based on between April 2015 and September 2016,the relevant experimental study.Based on the Yunyan85 as the research object,the selection of Anshun city west show area Shuangbao town Xuguan village as the field test.Studies the different planting density on the flue-cured tobacco agriculture character,the influence of chemical composition and yield and quality of tobacco leaf.The main results were as follows:In the frist,tobacco growing areas in Anshun province 110 cm*55 cm(16529 hm2)is the best planting density,the rate of production,superior tobacco planting density conditions,quality,output,achieves the highest;2213.33kg/hm2,44.8%,21.3 yuan/kg,47144yuan/hm2 respectively.The second,Planting density on the tobacco plant at different periods of net photosynthetic rate,stomatal conductance,transpiration rate,intercellular our fleet concentration effect.Planting density and rate of flue-cured tobacco yield and output value,average price and superior tobacco smoke,lower rate,medium,such as the rate of smoking tobacco economic traits showed after rising first down,and the lower smoking rates into positive correlation.Different planting density on the tobacco color,maturity,organization structure,chlorophyll content,oil content,thickness,width,length and so on tobacco leaf appearance,in 110 cm*55 cm(16529 hm2)processing,tobacco on the shape and the oil content is high.The third,Planting density on the quality of tobacco leaf weight,leaf area,leaf water content and stem content,open degree have influence on the physical properties such as roast tobacco leaf,110 cm*55 cm(16529 hm2)density processing is the best state.Leaves simple,weight is 10.09 g,quality of unit leaf area is 79.54 g/m2,open degree reached 45.16%,including infarction rate is only 27.32%.The fourth,Planting densities on the content of reducing sugar content in tobacco,nicotine,chlorine,potassium content,nitrogen content,sugar alkali than alkali,nitrogen,potassium chloride and other flue-cured tobacco of difference influence on the chemical composition,110 cm*55 cm(16529 hm2)tobacco planting density can make the chemical composition of tobacco to produce more high quality,so that the smoke more taste and aroma.The ratio of reducing sugar content in tobacco leaves was 18.97%in the upper leaves,middle lobe was 22.69%,lower lobe was 21.71%;Nicotine content in the upper,middle and lower part of the ratio of leaf were 3.78%,3.03%and 2.89%respectively;The chlorine content in the lower lobe,which rates were 0.57%,0.66%and 0.54%respectively;Potassium content in the lower lobe,which rates were 1.07%,1.34%and 1.51%respectively;Nitrogen content in the lower lobe,which rates were 2.59%,2.06%and 2.25%respectively.This study proved the tobacco growing areas in Anshun province Yunyan 85 flue-cured tobacco of most can the best planting density,which will provide a scientific basis for guiding the flue-cured tobacco production in the field,it will be Yunyan 85 yield and quality improvement and Guizhou region and the benign development of the tobacco leaf production support.