徽县烤烟膜下移栽期研究

Research on Flue-cured Tobacco Transplanting Period under Film Mulch in Hui County

通过对比分析烤烟膜下移栽与常规移栽对烟苗成活率、病害发生率、农艺性状和经济性状的影响,以期明确徽县植烟区烤烟膜下移栽期。结果表明,徽县膜下移栽最佳时期为4月22日左右,其大田生长期处于最适优质烟叶生长期,可有效提高烟苗成活率,烟叶产值比5月5日膜上移栽(CK)增收0.68万元/hm^2,中上等烟比例提高6.69%,减少了大田发病率,延长了生育期9 d,农艺性状表现良好,有效提高了烟叶产质量。

Comparative analysis about the seedling survival rate,disease incidence,effects of agronomic and economic characteristics of flue-cured tobacco under film transplanting date and conventional transplanting date were done in order to get the suitable date of tobacco transplanting under film mulch in Hui county. Results showed that the most suitable date for tobacco transplanting under film mulch in Hui county was around April 22 nd. The field growth period was in the most suitable tobacco growth period,which could effectively improved the seedling survival rate. Its tobacco leaf production value was 0. 68 million/hm^2 more than that of CK,and its proportion of middle and first-class tobacco increased 6. 69% than that of CK. Its growth period prolonged 9 d,and its field disease incidence was reduced. Its agronomic characters were better and tobacco yield and quality were improved.