红花大金元鲜烟叶成熟采收模式研究

Harvest Methods of Honghuadajinyuan Flue-cured Tobacco Variety

为探讨采收方法对红花大金元不同叶位烟叶落黄成熟的影响,通过不同采收模式处理,研究红花大金元各叶位烟叶的SPAD值变化、干物质、淀粉及烤后烟外观质量性状的变化.结果表明:"5+6+7"和"5+3+4+6"采收模式1次性采收下部叶易造成第3叶位成熟过度,"5+3+4+6"和"4+4+4+6"采收模式中部叶干物质、淀粉积累较高,烟叶落黄成熟较快;上部叶烟叶干物质含量常规采收模式较大,但干物质总含量"5+3+4+6"和"4+4+4+6"采收模式高于常规采收模式;上部叶落黄程度、烤后烟经济性状"5+3+4+6"和"4+4+4+6"采收模式较好;"4+4+4+6"采收模式采收时间、成熟期缩短,采收次数用工少.因此采用"4+4+4+6"采收模式对红花大金元烟叶的成熟和采收效果较好.

To study the effect of different harvesting methods on maturing of honghuadajinyuan flue-cured tobacco variety with different leaf positions, through the different harvesting method treatment, the changes of Honghuadajinyuan tobacco leaves at different positions of the variation of SPAD value, dry matter, starch and Flue-cured Tobacco Appearance Quality traits were studied. The result shows ： ‘‘ 5 ＋ 6 ＋ 7 ” harvesting model and u5 ＋ 3 ＋ 4 ＋ 6 ？, harvesting model on one-time harvest of the lower leaves, easily caused too high matu-rity on the third leaf bit ; the dry matter and the starch content are higher in middle leaves with treatment “ 5 ＋ 3 ＋ 4 ＋ 6 ” harvesting model and “4 ＋ 4 ＋ 4 ＋ 6” harvesting model and maturing rapidly ; conventional harvesting model gets the high dry matter content in up-per leaves, but the total dry matter content of “5 ＋ 3 ＋4 ＋ 6” harvesting model and “4 ＋ 4 ＋ 4 ＋ 6” harvesting model were higher than those of conventional harvesting model; the yellowing degree of upper leaves and economic features of flue-cured tobacco leaves of u5 ＋ 3＋4＋6” harvesting model and u4 ＋ 4 ＋ 4 ＋6 ？, harvesting model were better than conventional harvesting model; harvest time and ma-turity period of u4 ＋4 ＋4 ＋6 ？, harvesting model were shortened, and the time of harvest were significantly reduced. The “4 ＋ 4 ＋ 4 ＋ 6” mode of Honghuadajinyuan tobacco maturity and harvest get good results.