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为探索重庆烤烟的适宜移栽时期及气象因子与烤烟生长及品质指标间的相关关系,以巫山当地移栽时期为对照,设置了4个不同的移栽期试验,分别对烤烟的物理特征、化学品质和产量产值指标进行方差分析、主成分分析和冗余分析.结果表明:重庆巫山烤烟种植的移栽期提前可以优化烤烟部分物理特性和化学品质,提高烤烟的产量、质量和产值,并且在5月20日左右移栽的烤烟产量和产值显著高于其它移栽日期(p<0.05);主成分分析和冗余分析表明,气象因子对烤烟物理特性、化学品质和产量产值均能产生影响,并且这种影响是气象因子的综合效应.研究结果为重庆巫山烤烟移栽时期的确立提供了理论基础,并且提出了一个全面直观分析烟田生态系统气象因子与烤烟指标变量相关关系的方法.
In order to explore the suitable transplanting time and weather factors of flue-cured tobacco in Chongqing and the correlation between the growth and quality indexes of flue-cured tobacco, four different transplanting periods were set as the control in the local transplanting period of Wushan. The physical characteristics, Chemical quality and output value of production were analyzed by variance analysis, principal component analysis and redundancy analysis.The results showed that: the pre-transplant transplanting of Wushan flue-cured tobacco in Chongqing can optimize some of the physical characteristics and chemical quality of flue-cured tobacco to improve the yield, quality and output value of flue-cured tobacco, and The yield and value of flue-cured tobacco transplanted around May 20 were significantly higher than those of the other transplanting days (p <0.05). The principal component analysis and redundancy analysis showed that the meteorological factors could produce the physical properties, chemical quality and yield of flue-cured tobacco , And this effect is the comprehensive effect of meteorological factors.The results provide a theoretical basis for establishing the transplanting period of flue-cured tobacco in Wushan, Chongqing, and propose a comprehensive and intuitive method to analyze the correlation between the meteorological factors and the index variables of tobacco flue-cured tobacco .