In order to improve usability of upper flue-cured tobacco leaves,effects of hanging-pole bulk curing(with stem) and loose leaves bulk curing(no stem) of the one-time harvest and curing of different six upper flue-cured tobacco leaves on barn loading amount,curing cost,economic character,appearance quality,physical properties,chemical composition and sensory quality of tobacco leaves were studied.The results showed that compared with hanging-pole bulk curing with stem of the one-time harvest six top flue-cured tobacco leaves of different position,loose leaves bulk curing could increase loading amount and density,reduce labor cost,enhance the average price and higher quality percentage,improve appearance quality,harmonize the chemistry compositions,improve sensory quality of tobacco leaves.In a word,loose leaves bulk curing of the one-time harvest and curing was beneficial to improving usability and economic benefit of six upper tobacco leaves.The usability and economic benefit of the top 1~2 leaves under different harvest and curing method was lower,and advice was to give up curing.

为了解决余庆县部分烟叶钾含量偏低问题,2006年在余庆县花山乡万里村中等肥力的黄壤上设置了烟叶含钾量以及产量与质量之间关系的小区对比试验,结果表明:施用不同量的钾肥对烟株大田生育期和农艺性状影响不大。适量增施硫酸钾(150kg/hm2)有利于烟叶产量与质量的提高。烟叶总糖、还原糖含量有一定增加,烟碱含量降低。硫酸钾施入酸性土壤后会使土壤进一步酸化,应与有机肥、磷矿粉、石灰配合施用,以免造成土壤酸化和板结。