Climate resource allocation for production of tobacco leaves for cigar wrapper based on multivariate statistical analysis
"Yunxue 1"variety and the multivariate statistical analysis was used to study the climate resource allocation basis of tobacco leaves for cigar wrapper and its impact on the agronomic traits of tobac-co plants and the chemical composition of fermented tobacco leaves by changing the climate indicators dur-ing the growth period of tobacco plants through adjusting the period of transplanting to study the basis of cli-mate resource allocation for the production of tobacco leaves for cigar wrapper.The results of correlation analysis showed that the accumulated temperature,effective accumulated temperature≥10℃,total precip-itation,and total temperature difference during the field stage of tobacco plants had a significant impact on every indicator of agronomic traits,with correlation coefficient ranging from 0.478 to 0.939.The accumulat-ed temperature,effective accumulated temperature≥10℃,and average temperature had a significant im-pact on the content of total sugar,nicotine,total nitrogen,and protein in tobacco leaves,with correlation coefficient ranging from-0.955 to-1.000.Two principal factors including climate accumulation factor and humidity factor were extracted from eight climate indicators with factor analysis.The results of grey correla-tion analysis showed that the two factors mentioned above were the main factors affecting the agronomic traits of tobacco plants and the conventional chemical components of tobacco leaves.It is indicated that the main climatic factors for determining the transplanting period of tobacco plants for cigar wrapper are based on the comprehensive configuration of temperature,precipitation,and relative humidity during the period of field growth.
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