烤烟高茎壮苗深栽结合一次性施肥对烟叶质量和效益的影响

研究了烤烟高茎壮苗深栽结合一次性施肥技术对烟草生长及产质量的影响。结果表明,与常规栽培相比,深移栽烤烟的根重、主根根长、须根数量、根系分布范围、烟叶产量、产值分别增加了20%、37.2%、25%、66.2%、18.6%、17.1%,呈极显著差异。上部叶片全氮、烟碱含量分别降低了29%、9.2%;应用高茎壮苗7叶节深栽结合一次性施肥和减少氮肥施用量技术可节省用工量39.5个/hm2,节省用肥量15%。高茎壮苗7叶节深栽结合一次性施肥技术可以在保证烟叶产、质量与现行技术方法基本一致的前提下,达到优质烤烟生产节本增效的目的。

Effects of Deep-planting Large Sound Seedlings with One-time Fertilization on Flue-cured Tobacco Quality and Economic Returns

Field experiments were conducted to investigate the effects of deep planting with one time fertilization technique on tobacco growth,yields,and quality in Guizhou Province.The results showed that root weight,length of tap root,amount of lateral root,root zone,leaf yield,and output value significantly increased by 20%,37.2%,25%,66.2%,18.6%,and 17.1%,respectively,the contents of total nitrogen and nicotine in upper leaves decreased by 29% and 9.2%,respectively.The application of this technique could save labor cost by 39.5 man days per ha and fertilizer usage by 15%,but maintained the yields and quality of tobacco leaves.