地膜覆盖及揭膜与烤烟产质的关系

The lnfluence of plastic mulching cultivation and plastic removing stage on yield and quality of flue-cured tobacco.

通过对海拔１１００ｍ生态下地膜覆盖栽培及不同揭膜时期烤烟生长发育及产质关系的研究，结果表明，地膜烟栽后１月内膜下１０ｃｍ深处日均土温比露地高３３℃，月积温增高１０２５℃以上，可提早移栽７～１５ｄ；现蕾期揭膜单产最高（１６８３５ｋｇ／６６７ｍ２）、亩产值最大（２０７４３８元／６６７ｍ２）；以露地烟和现蕾期揭膜处理的化学成分较为协调；以现蕾期揭膜处理的烟气质量最佳。

The experiment of the lnfluence of plastic mulching cultivation and plastic removing stage on the growth, yield and quality of flue-cured tobacco which was done in the district of an elevation of 1 100 m showed that compared with the field without plastic film, the temperature of plastic mulching field was 3.30 ℃ higher in 10 cm deepth under earth, and the monthly accumulated temperature increased 102.5 ℃ that means the transplanting season can advance 7-15 days.The experiment also found that the treatment of removing plastic film in budding stage had the highest yield (168.35 kg/667 m 2) and best smoking quality, and the treatments of unmulching and removing plastic in budding stage had well-balanced chemical compounds.