嵩明烟区培育“中棵烟”的最适生长环境研究

Study on Optimal Growth Environment for Cultivation of“Middle Tree Tobacco”in Songming Tobacco Area

于昆明市嵩明烟区选取3块具有代表性的地块,以烤烟品种云烟87为研究对象,按照“中棵烟”的技术规程进行栽植,对各地块烤烟的农艺性状、经济性状、烤后烟叶化学成分等指标进行差异分析,并分别与优质“中棵烟”的标准进行比较。结果表明:在农艺性状方面,地块1与地块2相差不大且符合优质“中棵烟”的标准;在经济性状和原烟外观质量上,地块2显著优于地块1,地块3最差;在烤后烟叶的化学成分含量方面,地块2大体达到了优质“中棵烟”的标准;以地块2的土壤基本理化性质总体最优,该地块最适于种植云烟87的“中棵烟”。

Three representative plots were selected in Songming tobacco area of Kunming city,and flue-cured tobacco Yunyan 87 was planted according to the technical procedures of“middle tree tobacco”.The differences of agronomics,economic characters and chemical composition of tobacco leaves after curing were analyzed,and compared with the standard of high quality“middle tree tobacco”.The results showed that in terms of agronomic traits,plot 1 and plot 2 had little difference and were in line with the current definition standard of“middle tree tobacco”.Plot 2 was significantly better than plot 1 in terms of economic traits and appearance quality of raw tobacco.Plot 3 was the worst.In terms of chemical composition of cured tobacco leaves,plot 2 generally reached the chemical composition indexes of high quality“middle tree tobacco”.In conclusion,the basic physical and chemical properties of plot 2 are generally the best,and plot 2 is the most suitable for planting Yunyan 87“middle tree tobacco”.