漂浮育苗改进技术对移栽前期烤烟生长及生理特性的影响  

Effect of Improvement Techniques of Floating Seedling System on Growth and Physiological Characteristics of Flue-cured Tobacco in Early Transplanting Stage

作　　者：王书凤[1] 李长军[2] 杨超 徐盈[1] 耿赛男[1] 习向银[1] 

机构地区：[1]西南大学资源环境学院,重庆400716 [2]中国烟草总公司重庆分公司,重庆400060 [3]重庆烟草科学研究所,重庆400715

出　　处：《贵州农业科学》2014年第4期65-68,71,共5页Guizhou Agricultural Sciences

基　　金：重庆市科委自然基金计划资助项目"烟草化感自毒作用及连作障碍消减技术研究"(CSTC;2010BB11300);重庆市烟草公司资助项目"重庆烤烟前期生长调控技术研究与应用"(NY20110601070006)

摘　　要：为促进烤烟早生快发,通过大棚育苗和田间试验结合的方法,研究漂浮育苗改进技术对移栽前期烤烟生长及生理特性的影响。结果表明:双棚+增氧+干湿交替处理(改进技术)在烟苗移栽后10d,幼苗根系活力、CAT、POD、MDA、可溶性糖含量分别是对照(常规漂浮育苗)的2.18倍、1.17倍、1.69倍、10.5倍和1.50倍;移栽后30d,幼苗根数、总根长、总根表面积和根体积分别是对照的2.0倍、2.04倍、1.97倍和2.08倍。结论:双棚+增氧+干湿交替处理可使烤烟根系发达,茎秆粗壮,叶片展开性能好,显著增强移栽前期烤烟的抗逆能力。In order to promote the development and growth of flue-tobacco,an experiment was conducted in the greenhouse and field to study the effects of improvement techniques of floating seedling system on early growth and physiological characteristics of flue-cured tobacco in Chongqing.The results showed that the treatment,with integrated technologies of double shed,oxygen increased and dry-wet alternate（DODW）,obviously increased plant height,stem girth,maximum leaf length,and maximum leaf width in seedling and early growth of flue-cured tobacco.And it also significantly augmented root numbers,total root length,total root surface area and total root volume,and raised the root activity,and improved the activities of Peroxidase（POD）and Catalase（CAT）,and increased the contents of Malondialdehyde（MDA）and soluble sugar in early growth of flue-cured tobacco.Among them,compared with the control at 10days after transplanting,the root activity,CAT and POD activity,MDA and soluble sugar contents of the DODW treatment was respectively 2.18times,1.17times,1.69times,10.5times, and 1.50times.Meanwhile,root numbers,total root length,total root surface area and root volume of the DODW treatment was respectively 2.00times,2.04times,1.97times and 2.07times,as compared to the control at 30days after transplanting.Therefore,the DODW treatment enhanced the root systems developed,stem stout,leaf unfolding performance well,and dramatically strengthened the tobacco resilience in early growth of flue-cured tobacco.

关 键 词：漂浮育苗 技术改进 烤烟 生理特性 移栽前期 

分 类 号：S572[农业科学—烟草工业]