南方农业学报2023，Vol.54Issue(8)：2218-2227,10.DOI:10.3969/j.issn.2095-1191.2023.08.003
遮荫栽培条件下茄衣烟田微气候特征及其对烟株生长发育和烟叶质量的影响
Field microclimate characteristics and their effects on the growth and development and quality of wrapper tobacco leaf under shading cultivation
摘要
Abstract
[Objective]This paper explored the effects of microclimate characteristics of wrapper tobacco fields on the growth and development of tobacco plants and the quality of fermented wrapper tobacco leaf under shading cultivation conditions,in order to provide theoretical basis for domestic shading cultivation of wrapper tobacco leaf.[Method]Using the cigar variety Yunxue-1 as the experimental material,three treatments with 100%(CK),75%(T1),and 65%(T2)light transmittance were set up to analyze the microclimate characteristics of tobacco fields under different treatments and their effects on plant agronomic traits,biomass accumulation and distribution,and main quality characteristics of fermented tobacco leaves.[Result]Shading treatment could reduce the temperature,light intensity,diurnal temperature difference,and effective accumulated temperature≥10℃in tobacco fields,and increase relative humidity.Shading had significant impact on growth and development indicators such as tobacco plant height,stem circumference,maximum leaf area and biomass accumulation(P<0.05,the same below).Among them,tobacco under T2 treatment had the highest plant height,biggest maximum leaf area,and largest leaf biomass,with the highest increase at 40 d after shading,while tobacco under CK treatment had the longest stem circumference.Tobacco leaf under T2 treatment had the highest scores for appearance quality indicators such as leaf structure,oil content,color uniformity and branch thickness,and its tensile strength was also significantly higher than other treatment groups.The yield and yield rate of wrapper tobacco leaf under shading treatment were significantly higher than those under CK.Compared with CK,the yield of wrapper tobacco leaf under T1 and T2 treatments increased significantly by 5.87%and 13.78%respectively,and the yield rate of wrapper tobacco leaf increased significantly by 8.56%and 18.56%respectively.The correlation analysis results indicated that the decrease in temperature(accumulated temperature,effective accumulated temperature≥10℃and average temperature)under shading conditions was the main reason for the decreases in leaf thickness,stem circumference,and rhizome biomass accumulation of tobacco plants.The decrease in average light intensity and increase in average relative humidity under shading conditions were key factors in improving the appearance quality and physical properties of wrapper tobacco leaf.[Conclusion]Shading can reduce the environmental temperature and light intensity of wrapper tobacco leaf fields,in-crease relative humidity,and alter the morphological development and mass accumulation of tobacco plants,thereby in-creasing the yield and the yield rate of wrapper tobacco leaf.It also makes the appearance and physical indicators of fer-mented tobacco leaves more suitable for industrial use.Overall,65%light transmittance is more suitable for shading culti-vation of wrapper tobacco leaf in southwestern Henan.关键词
遮荫栽培/田间微气候/茄衣烟叶/生长发育/烟叶质量/相关分析Key words
shading cultivation/field microclimate/wrapper tobacco leaf/growth and development/tobacco leaf quality/correlation analysis分类
农业科技引用本文复制引用
王硕立,薛子钟,丁松爽,侯冰清,赵曦,刘冰洋,时雅琪,时向东..遮荫栽培条件下茄衣烟田微气候特征及其对烟株生长发育和烟叶质量的影响[J].南方农业学报,2023,54(8):2218-2227,10.基金项目
国家自然科学基金项目(32101851) （32101851）
山东中烟工业有限责任公司科技计划项目(2022370000340544) （2022370000340544）
南阳市烟草公司科技计划项目(NYYCKJ202201) National Natural Science Foundation of China(32101851) （NYYCKJ202201）
Science and Technology Plan Project of China Tobacco Shandong Industrial Co.,Ltd.(2022370000340544) （2022370000340544）
Science and Technology Plan Project of Nanyang Tobacco Company(NYYCKJ202201) （NYYCKJ202201）
