Study On Agronomic Characters,Baking Characteristics And Nitrogen Requirement Of New Flue-cured Tobacco 09011

Guangyuan is a suitable area for the growth of high-quality tobacco leaves in sichuan province.This study based on the new strain of 09011 flue-cured tobacco,carry out field trials in guangyuan Jian Ge and baking test,mainly through the study of the varieties of agronomic traits,morbidity,quality characters,economic characters,baking characteristics,the content of nitrogen levels,in order to guangyuan smoke zone to introduce strong adaptability,high quality production,quality characteristics of outstanding new flue-cured tobacco varieties.The main conclusions are as follows.(1)growth characteristics.In terms of agronomic traits in the field,the change trend of the agronomic traits in the field of flue-cured tobacco new line 09011 was similar to that of yunyan87.It entered the flourishing period when the field grew for about 40 days,the growth rate gradually increased,and the various indexes of agronomic traits reached the maximum value and entered the stable period around 60 days.In terms of disease resistance and resistance of flue-cured tobacco in field growing period,the new flue-cured tobacco strain 09011 had better disease resistance.In terms of appearance and quality of cured tobacco leaves,the new flue-cured tobacco varieties 09011 are golden in color and bright in luster.The leaf structure is loose,moderate in identity,abundant in oil,and mature,which is superior to the comparison varieties.In terms of the sensory quality of cured tobacco leaves,the tobacco leaf evaluation and smoking characteristics of the new flue-cured tobacco strain 09011 were significantly better than that of the control cloud tobacco 87.In terms of chemical index content and chemical coordination of cured tobacco leaves after roasting,the indexes of total nicotine and chlorine of new flue-cured tobacco line 09011 had better chemical coordination,while the indexes of total sugar,reducing sugar,potassium and total nitrogen of yunyan 87 had better chemical coordination.In terms of economic benefits,the new flue-cured tobacco strain 09011 had better economic benefits than yunyan 87 under the same cultivation conditions.In terms of physical characteristics,the new flue-cured tobacco line 09011 had lower stem content and heavier single leaf weight.(2)baking characteristics.The new flue-cured tobacco line 09011 has higher tablet yield and lower production cost.The baking characteristics of the new flue-cured tobacco line 09011 were worse than that of the control variety yunyan 87.The law of water loss of flue-cured tobacco leaf 09011 was not consistent with that of yunyan87 lower tobacco leaf,while that of middle and upper tobacco leaf was consistent.In the process of pigment degradation,not only chlorophyll a and chlorophyll b will gradually degrade with the passage of time,but also carotenoids will undergo corresponding degradation,and chlorophyll degradation is faster,so the leaves will gradually turn yellow.For yunyan87,the activity of polyphenol oxidase in its leaves was lower in later stage,so it was easier to determine the color.For 09011,there was a small peak of polyphenol oxidase activity in the leaves at 36 h,which may have an adverse effect on color determination.(3)fertilization characteristics.Different nitrogen fertilizer rates had significant effects on the agronomic characters of the new flue-cured tobacco line 09011.Among them,different nitrogen fertilizer application had significant influence on the plant height,leaf length,leaf width,leaf number and other agronomic indexes of the new flue-cured tobacco line 09011,while different nitrogen fertilizer application had no significant influence on the stem circumference,pitch and other indexes of the new flue-cured tobacco line 09011.The effect of different fertilizer treatments on the proportion of superior smoke was not significant.The higher the nitrogen fertilizer,the lower the maturity of tobacco leaves.The higher the nitrogen fertilizer,the looser the leaf structure and the higher the oil content.The higher the nitrogen fertilizer,the orange color of tobacco leaves,moderate identity,bright color.With the increase of nitrogen fertilizer application,the indexes such as total sugar,reducing sugar,nicotine,total nitrogen,chlorine and potassium were in the range of 6?7kg of pure nitrogen application in mu,and the index content showed a trend of increase,while the index content was in the range of 7?8kg of pure nitrogen application in mu,and the index content showed a trend of decrease.With the increase of nitrogen fertilizer application,the coordination of chemical quality assurance of total sugar and reducing sugar of new flue-cured tobacco line 09011 showed a decreasing trend,while the coordination of chlorination showed an increasing trend.Under different nitrogen fertilizer treatments,the new flue-cured tobacco varieties 09011 were all intermediate.When the net nitrogen was applied to 6kg of mu,the new flue-cured tobacco varieties 09011 had heavier greenness and wilt gas.When the net nitrogen was applied to 7kg of mu,the new flue-cured tobacco varieties 09011 had heavier greenness gas,and when the net nitrogen was applied to 8kg of mu,the new flue-cured tobacco varieties 09011 had heavier wilt gas.