移栽期对烤烟农艺性状及经济性状与上部烟叶可用性的影响

在凤凰县千工坪烟区,以K 326为试验材料,研究了移栽期对烤烟病害程度、农艺性状、经济性状及上部烟叶可用性的影响,结果表明:适当推迟移栽烤烟,可显著降低上部烟叶赤星病与病毒病危害,减少上部烟叶的病斑,增加烟株株高、有效留叶数、烟叶长度与宽度,提高烟叶产量。与4月22日移栽相比,5月11日移栽的烟叶产量、产值、均价及上等烟比例分别增加489 kg/hm2,9 702元/hm2,1.4元/kg和16.7%。在湘西凤凰县或气象条件类似的植烟区,适当推迟烤烟移栽,可显著降低上部烟叶的比例,上部烟叶开片情况显著改善,提高了上部烟叶的可用性,并显著增加了产值与上等烟比例。

Effects of Transplantation Date on Agronomic Properties, Economic Characters and Usability of Upper Leaf of Flue Cured Tobacco

Effects of transplanting date on disease degree,agronomic properties,economic characters and usability of upper leaves of flue-cured tobacco were studied with K326 as material in Qiangongping,Fenghuang County,Hunan Province.The results indicated that appropriate postponement of transplanting date for flue-cured tobacco could apparently decrease the degree of tobacco brown spot and virus disease of upper leaves and disease plaques on leaves.At the same time the plant height,number of effective remained leaves,length and width of upper leaves and yield unit area could be obviously increased.Postponing transplanting date from April 22 to May 11,the yield,output value,mean price and percentage of high quality leaves were increased by 489 kg/hm2,9 702 yuan/hm2,1.4 yuan/kg and 16.7%,respectively.It was concluded that in Fenghuang County or other tobacco production regions with similar meteorological conditions,appropriate postponement of transplanting date could apparently decrease the percentage of upper leaves,improve length and width of upper leaves,increase the usability of upper leaves,and significantly increase output value and percentage of high quality leaves.