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防雨遮阴和不同移栽期对鄂西烤烟生长发育及品质影响的研究

Experimental Study on Effects of Rainproof Shade and Different Transplanting Periods on Growth, Development and Quality of Flue-cured Tobacco in Western Hubei

  • 摘要: 为探究防雨遮阴及不同移栽期对烤烟生长发育及其品质的影响,基于恩施州巴东县茶店子镇烟叶种植核心示范区连续两年的试验数据,运用数理统计方法,分析了各处理对烟草生育期、农艺性状、干物质积累及化学成分的影响。结果表明:(1)与2023年相比,2022年巴东试验区气温偏高、降水量异常偏少、湿度异常偏小,为异常干旱年。(2)不同移栽期试验中,随着移栽期的推迟,大田生育期日数缩短,农艺性状、成熟期生物量及干物质积累量均呈增加的趋势。移栽期5月8日烟叶化学成分综合得分优于其他移栽期处理。移栽期过早或过迟均会影响烟草的生长发育及其品质。(3)防雨试验中,2022年因大田期干旱,与对照相比,各项指标差异不明显;2023年各项指标整体低于对照。(4)遮阴试验中,烟草生育期缩短,烟株的株高、有效叶片数、腰叶最大叶长、腰叶最大叶宽、茎围、成熟期生物量、干物质积累量、化学成分均低于对照。因此,不同移栽期及防雨遮阴试验均会对烟草的生长发育及其品质造成影响,应选择合适的移栽期、采取有效排水和合理遮阴措施,充分利用气候资源,实现烟叶的稳产优质。

     

    Abstract: In order to investigate the effects of rainproof shade and different transplanting periods on the growth, development and quality of flue-cured tobacco, based on the experimental data of the core demonstration area of tobacco leaf planting in Chadianzi Town, Badong County, Enshi Prefecture for two consecutive years, the mathematical statistics method was used to study the effects of each experimental treatment on the growth period, agronomic traits, dry matter accumulation and chemical components of tobacco. The results showed that: (1) Compared with 2023, the temperature in Badong experimental area was higher, the precipitation was abnormally less, and the humidity was normally smaller in 2022, which was an abnormal drought year. (2) In the different transplanting period experiments, with the delay of the transplanting period, the number of days in the field period was shortened, and the agronomic traits, biomass and dry matter accumulation at maturity showed an increasing trend. The chemical components of the transplanting period on May 8th were better than that of other transplanting periods. Transplanting too early or too late affected the growth, development and quality of tobacco. (3) In the rainproof treatment, all indicators of tobacco had little differences compared with the control group in 2022 due to the drought in the field period. In 2023, all indicators of tobacco were lower than those of the control group. (4) In the shade treatment, the growth period of tobacco was shortened, and the plant height, number of productive leaves, maximum leaf length and width of waist leaves, stem circumference, biomass at maturity, dry matter accumulation, and chemical components were all lower than those of the control group. Therefore, different transplanting periods and rainproof shade treatments all had a certain impact on the growth, development and quality of tobacco. It was necessary to choose the appropriate transplanting period, take effective drainage and appropriate shade measures, make full use of climatic resources, and achieve stable production and high quality.