贵州特色烤烟农艺性状与光合特性研究

Agronomic Attributes and Photosynthetic Characteristics of Flue-cured Tobacco with Guizhou Characteristics

为了进一步了解贵州特色烤烟生长特性,以K326、毕纳1号、贵烟1号、贵烟2号和K326有机烟为材料,研究了不同烤烟大田生育期(35、70、105 d)烟株农艺性状和光合特征的差异。结果表明,大田生长期贵烟2号农艺性状较好,移栽后105 d干质量为349.46 g/株,其次是毕纳1号(323.59 g/株);贵烟2号光合特性最好,可作为品种选育的良好材料,其次是K326和贵烟1号;K326移栽后35 d和70 d的SPAD值(35.72、46.75)均较大,毕纳1号移栽后75 d值最大(47.32);无论是农艺性状指标,还是光合特性参数,K326有机烟均较差,但其易烤性较好。农艺性状、光合特性及色素含量与品种选育、烘烤特性及烟叶品质密切相关,可作为判断指标指导烤烟生产。

In order to further understand the growth characteristics of Guizhou flue-cured tobacco, the difference of agronomicattributes and photosynthetic characteristics in different growth stages （35, 70, 105 d after transplanting） with K326, Bina 1, Guiyan1, Guiyan 2 and organic tobacco K326 as material were studied. The result showed that Guiyan 2 had better agronomic attributes infield growth stage, and dry weight was 349.46 g/plant on 105 d after transplanting, and Bina 1 was 323.59 g/plant. Photosyntheticcharacteristic parameters of Guiyan 2 were the best, which could be used as potential material for variety breeding, then the nextwere K326 and Guiyan 1. The chlorophyll content of K326 on 35 d and 70 d was 35.72 and 46.75, while Bina 1 was 47.32 on 70 dafter transplanting. Both agronomic attributes and photosynthetic characteristics of organic tobacco K326 were worse. However, theywere easy to cured. Agronomic attributes and photosynthetic characteristics and the content of chlorophyll were good judgmentindices for guiding tobacco production, meanwhile they had a close relationship with variety breeding, curing characteristic andtobacco quality.