Comparison Of Early Spring Tobacco Varieties (Strains) In Changting County And Research On Supporting Production Technology

Changting tobacco area is one of the main producing areas of tobacco leaf in longyan city.However,in changting tobacco area,a single variety of Yunyan 87 has been planted for a long time.At present,problems such as deterioration of varieties and decline in disease resistance have appeared,which have a great impact on the production quality of flue-cured tobacco.It is an effective way to solve this problem to choose fine varieties suitable for changting tobacco area.Minyan 35 and C2 are the characteristic varieties(strains)independently cultivated in longyan tobacco area.By comparing their comprehensive characters in changting,the better varieties(strains)are selected.The effects of different organic fertilizers on the growth period,agronomic characters and economic characters of selected early spring flue-cured tobacco varieties were studied.The main research results are as follows:Comparing different flue-cured tobacco varieties(or lines)1.The results showed that the Minyan 35 field growth period than C2 and CB-1 short,strong seedling growth,early into the sprout,mature fell yellow features good field,at the end of September can bake;In terms of the growth potential of the field,the overall growth potential of Minyan 35 is strong,the number of effective leaves is large,the maximum leaf area is large,and the plant height,stem circumference and pitch are better than the control CB-1.The economic index of Minyan 35 is higher than that of the control varieties,and the proportion of fine smoke and medium fine smoke is the first,with good comprehensive performance.The appearance quality of the original smoke is good,especially in the bright,oily,mostly orange color,Minyan 35 in the changting smoke area of comprehensive performance prominent.2.Different transplanting test results show that:on November 1,Minyan 35-November 10,sowing seeds,the next year on January 20-30 January transplanting,70 days age of seedling,the growth period is longer,more effective leaf number,roast tobacco leaf appearance quality is good,oil content,good colour,yield and output value and proportion of superior tobacco,average performance is good.3.The test results of different nitrogen application quantities and planting densities showed that:the planting density was 0.45m,the nitrogen application amount was 127.5kg/hm2,the original smoke had good appearance quality,sufficient oil content,loose tissue structure,and good yield and output value.4.The different dosage of rapeseed cake fertilizer experiment results show that the application of 35%rapeseed processing of flue-cured tobacco smoke the original appearance of good quality and oily cent,loose structure,economic characters,yield and output value,which is the optimal proportion of superior tobacco.5.The kinds of organic fertilizer experiment results show that the organic fertilizer(cow manure,pig manure and chicken manure)processing economic characters of flue-cured tobacco is better than that of the pure fertilizer and cake fertilizer,the application of cow dung treatment of flue-cured tobacco smoke the original appearance of good quality and oily cent,chroma is stronger,yield,output value and the proportion of superior tobacco are optimal.