机构地区:[1]湘西自治州烟草公司生产技术中心,湖南吉首416000 [2]湖南省气象科学研究所,湖南长沙410118 [3]湖南中烟工业有限责任公司,湖南长沙410004 [4]中国农业科学院烟草研究所/烟草行业烟草病虫害监测与综合治理重点实验室,山东青岛266101
出 处:《作物研究》2023年第3期223-229,共7页Crop Research
基 金:湖南省烟草专卖局(公司)项目(XX2019-2022Aa01)。
摘 要:为探明主要气象因子对湘西山地烤烟产质量的限制与影响,优化烤烟移栽期,通过连续3年烤烟主栽品种湘烟7号的不同移栽期大田试验,探索移栽期变化规律,研究日照、降水量及温度与烤烟产质量的关系。结果表明,香气质、余味与烤烟移栽期中等相关,香气量和产值与移栽期强相关;同时T1处理[4月12日(低海拔)、4月19日(中海拔)与4月26日(高海拔)]移栽的烤烟香气质、余味、香气量评吸得分值和产值最大,相比于其它4个处理的平均值增幅分别为6.16%±2.99%、19.39%±5.85%、5.38%±1.68%、19.37%±5.86%。简单相关分析表明,≥12℃有效积温、降水量、日照时数3种气象因子两两间均呈极显著正相关,且与多数产质量指标呈极显著相关。典型相关分析结果表明,产质量因子与气象因子间存在极显著的典型相关关系,烤烟移栽期主要影响降水量与≥12℃有效积温及香气量和产值的大小。主成分分析结果显示,第一主成分说明调节烤烟移栽期能改善气象因子与烤烟产质量,在效应上具有相似的特点;第二主成分说明烤烟移栽期影响气象因子与产质量上的主要差异是刺激性、杂气、产值、燃烧性、余味、≥12℃有效积温的变化。因此,从产质量上看,4月12日、4月19日与4月26日分别是湘西烟区低、中、高海拔地区湘烟7号的最佳移栽期。In order to clearly define mainly meteorological factors which affect the yield and quality of flue-cured tobacco in mountain,and to properly arrange field transplanting date,field experiments using main varieties of Xiangyan7 with different transplanting date treatments were carried out for three years to analyze changes in growth period,and defined the relation-ship between temperature and sunshine and precipitation on yield and quality of flue-cured tobacco.The results showed that fragrance quality and aftertaste were moderately correlated with the transplanting treatments of flue-cured tobacco,while fragrance and output were strongly correlated with it.At the same time,fragrance,output,fragrance quality and after-taste of flue-cured tobacco transplanted at T1(April 12、April 19 and April 26)were the largest,which increased by 6.16%±2.99%,19.39%±5.85%,5.38%±1.68%and 19.37%±5.86%,respectively,compared with the average values of the other four stages.Simple correlation analysis showed that the effective accumulated temperature≥12℃,precipitati-on and sunshine duration were significantly positively correlated with most fragrance and output.The results of canonical correlation analysis showed that there was a very significant canonical correlation between fragrance,output and meteoro-logical factors.Different transplanting period of flue-cured tobacco mainly affected precipitation,effective accumulated tem-perature≥12℃,fragrance and output.The results of principal component analysis showed that the first principal compo-nent indicated that adjusting the different transplanting period could improve the meteorological factors and fragrance,out-put of flue-cured tobacco,and the effects had similar characteristics.The second principal component indicated that the main differences in influencing meteorological factors and fragrance,output were the changes of stimulating,mixed gas,out-put,flammability,aftertaste and effective accumulated temperature≥12℃.Therefore,from the perspective of agronomic charact
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