云南富源烟区的烤烟品种(系)适应性研究OA

To study the adaptability of different tobacco varieties(lines)in the Fuyuan tobacco region of Yunnan Province,the main cultivated varieties K326 and Yunyan 87 were used as control varieties.The growth periods,field natural disease conditions,main agronomic traits,economic traits,and appearance quality of three tobacco varieties(lines)namely YN222,GZ42 and YN224 were analyzed.The results showed that the GZ42 variety had the longest field growth period(110 days),while the Yunyan 87 variety had the shortest(105 days).There were differences in plant morphology and leaf shape among the three varieties(lines).The field uniformity of all 3 varieties was uniform,and the maturity characteristics were all layering and yellowing.The comprehensive agronomic traits of YN222 were better,with a mild occurrence of weather fleck,tomato spotted wilt virus,and tobacco mosaic virus(TMV).The yield(2 464.65 kg/hm2),output value(64 795.65 yuan/hm2),and the proportion of medium and upper-grade tobacco(88.93%)were all the highest.All varieties(lines)of tobacco after curing had an orange-yellow color,and the maturity was all mature.YN222 had stronger luster and a high level of oil content,and the weight of a single leaf was moderately high,at 12.17 g.In summary,YN222 performs the best in the production trial comparison,and all indicators are superior to the main control variety K326 and the secondary control variety Yunyan 87,and has strong promotion value.