高海拔地区不同揭膜培土时间对烤烟产质量的影响

以云烟85品种为材料,研究不同揭膜时间及全生育期不揭膜对烤烟生长发育、内在化学品质、物理性状及产质量的影响。结果表明:不同揭膜培土时间处理的烤烟产质量差异显著。随着揭膜时间的提前,与不揭膜的烤烟相比,移栽40、50 d揭膜处理的烤烟的总氮、钾、氯等含量均呈升高的趋势,内在化学成分更为协调;均价、产量、产值均不同程度地提高,其中以移栽40 d后揭膜培土追肥效果最佳。

Effects of Different Film-uncovering Time on Flue-cured Tobacco Quality and Yield in High Altitude Region

Taking flue-cured tobacco variety(Yunyan 85)as materials,the effects of three different film uncovering times(30 d,40 d and 50 d)and total growing stage film mulched on the growth,internal chemical properties,physical properties,yields and production value of flue-cured tobacco were studied. Results showed that the yields and quality of different film uncovering times was significant compared with film mulched treatment,the contents of total Nitrogen(N),potassium(K)and chlorine(Cl)showed the tendency of increase with more harmonious of internal chemical component in film uncovering times( 40 d and 50 d). The average price, yields and production value increased in different extent, with 40 d as the optimum film uncovering time.