Effect Of Tobacco Organizational Structure Development、chemical Composition、the Yield And Quality With Different Planting Density And N Application Rate

To explore different planting density and nitrogen fertilization process, the impact on the quality of tobacco leaf tobacco organizational structure development and baked. Guangdong to smoke 98 as test material, through field experiments, using randomized block arrangement, set up six different planting density and nitrogen fertilizer combination treatment, respectively, in leaf length 30 cm, length, fresh leaves collected in the upper part when ripe, growth and development of tobacco leaf pigment content,chemical components of tobacco leaves were analyzed, and the use of paraffin production methods, observe the structure of the leaf tissue, and after collecting tobacco leaves were chemical components, sensory quality analysis and comparison of results showed that:1. Different planting density and nitrogen fertilization treatments on Tobacco Growth and Development Characteristics of organizational structure significantly affected. Growth from the blade of the whole process, the leaf thickness, palisade tissue thickness, sponge tissue thickness increased with leaf length increases, while the palisade tissue density with increasing leaf length decreases. Palisade tissue thickness, sponge tissue thickness, leaf thickness increased with planting density increases and decreases with the increase of nitrogen increases; palisade tissue density with planting density increases and decreases with the increase of nitrogen increases, and planting density of palisade tissue cell density effect is greater than the impact of nitrogen rate.2. Different planting density and nitrogen fertilization process, the chemical components of flue-cured tobacco is different. The total sugar content, sugar content, starch content increased with planting density increases with increasing amount of nitrogen decreases the total nitrogen and nicotine content with planting density increases and decreases with the amount of nitrogen increases. In the process of growth and development of tobacco, tobacco leaf thickness, Leaf Weight, palisade tissue thickness, sponge tissue thickness, palisade tissue density of the blade with total sugar, reducing sugar, starch content was significantly negatively correlated with total nitrogen and nicotine contentThere was a significant positive correlation. Low levels of nitrogen application, planting density had no effect on pigment content, high levels of nitrogen rate, chlorophyll content increased with planting density increases. In the whole growth process of tobacco, with the increase of nitrogen, pigment content increases.3. The total sugar, reducing sugar, starch content increased with the increase of planting density and nitrogen application rate decreases; nicotine and total nitrogen with the planting density increases and decreases with the increase of nitrogen increases; high nitrogen fertilizer the amount, Schmuck value increases with the increase of planting density, low application rate, Schmuck value decreases with the increase of planting density after the first increased; under high nitrogen application, with the increase of planting density, potassium chlorine ratio decreased first and then increased at low application rate,ratio of potassium to chlorine in tobacco leaves showed then decreases. Through the rear flue-cured tobacco chemical composition of the coordination of grilled tobacco comprehensive evaluation found that from a single indicators, planting density and nitrogen fertilizer on the starch content of flue-cured tobacco, nicotine content, sugar, nicotine,chlorine and potassium ratio greater impact.4. Different planting density and nitrogen fertilizer on tobacco yield, production value,fine tobacco ratio, the proportion of superior tobacco and other economic traits differ,planting density of 13,500 hm-2nitrogen rate was 120 Kg·hm-2(A2B1) a combination of value, the highest average price, planting density of 13,500hm-2, Nitrogen was 180 Kg·hm-2(A2B2) yield, the highest fine tobacco ratio. By the middle of the leaf after different planting density and nitrogen fertilizer were smoking roast, flavor found in flue-cured tobacco in different planting density and nitrogen fertilizer treatment in addition to planting density of 10,500 hm-2, nitrogen rate was 120 Kg·hm-2(A1B1) is concentrated in the partial,other treatment are cured tobacco flavor Luzhou, combined analysis that planting density13500 hm-2, Nitrogen 120 Kg·hm-2(A2B1) of test composition more in line with the aroma of tobacco in Nanxiong demand type of tobacco.Different planting density and nitrogen levels are generated on Tobacco population structure and ontogeny significant impact on the interaction between the two groups has changed the field of tobacco growing ecological conditions, thus affecting the growth and development of the internal cellular structure of the tobacco, flue-cured tobacco to improve internal coordination chemical composition, balance and sensory quality of play in tobacco leaf in flue-cured tobacco production has played a positive role. Through comprehensive analysis that planting density 13500 hm-2, Nitrogen 120 Kg·hm-2(A2B1) Test combinationof tobacco ontogeny better environmental conditions, community development to achieve the desired level for the optimization of flue-cured tobacco cultivation technique provides a theoretical basis, tobacco is tobacco in Nanxiong characteristic style of excavation to provide technical support and highlight.