山地烤烟垄沟覆膜揭膜时间试验研究

[目的]为了明确高海拔地区烤烟垄沟覆膜的揭膜时间。[方法]采用随机区组,设移栽后30 d揭膜(A)4、0 d揭膜(B)5、0 d揭膜(C)6、0 d揭膜(D)4个处理和1个对照(不揭膜),研究了山地烤烟垄沟覆膜不同揭膜时间对烤烟产量产值的影响。[结果]4个处理的株高、叶片数、叶长、叶宽、叶面积系数等农艺性状比对照有所提高;B、C处理产量与对照差异极显著,A、D处理与对照无显著差异;4个处理的产值、中上等烟比例均与对照差异极显著,但4个处理间差异不明显。B处理烟叶产量和产值均最高,分别为174.74 kg/667m2和2 023.45元/667m2,比对照分别增长10.96%和9.12%。[结论]该研究为烤烟覆膜栽培与揭膜技术的推广应用提供了科学依据。

Experiment Research on the Removing Film Time of Flue-cured Tobacco in Furrow Covered with Film in Mountain Region

[Objective] The aim of the research was to ascertain the removing film time of flue-cured tobacco cultured in furrow covered with film in high-altitude regions.[Method] In the test with the randomized block design,4 treatments of removing film after transplanting 30 d(A),40 d(B),50 d(C),60 d(D),and CK without removing film were set up to study the effects of different removing time of flue-cured tobacco in furrow covered with film in mountain regions.[Result] Compared with CK,some agronomic traits such as plant height,leaf number,leaf length,leaf width and leaf area coefficient were increased in 4 treatments.The yield of treatment B and C had extremely significant difference with CK and that of treatment A and D had no significant difference with CK.The production value and the proportion of middle and superior tobacco leaves in 4 treatments had extremely significant difference with CK,but the difference among 4 treatments was not obvious.The yield and production value in treatment B were both highest,being 174.74 kg per 667m2 and 2023.45 yuan per 667m2 respectively,which were increased by 10.96% and 9.12% respectively.[Conclusion] The research provided a scientific basis for the film-covering culture of flue-cured tobacco and the extension application of the film-removing technology.