Screening Key Factors Affecting Chemical Compositions of Kungming ‘Hongda’ Tobacco by Correspondence Analysis Method

doi:10.11924/j.issn.1000-6850.casb16040109

Abstract

Abstract: The chemical composition of flue-cured tobacco is an important factor to evaluate the quality. The regional differences of chemical composition characteristics are significant according to varying altitude, soil condition, nutrient management and cultivation management. Therefore, it is essential to analyze the combined effects of these factors on chemical compositions of flue-cured tobacco. In this study, soil samples and flue-cured tobacco samples were selected, detected and analyzed in 36 sites with various soil conditions and agricultural activities. According to factors of altitude, soil condition, nutrient management and cultivation management, the cluster analysis was carried out by using DPS software, and the chemical compositions and the agricultural production condition were examined with correspondence analysis. The results showed that: (1) the successive order of factors affecting the chemical compositions of ‘Hongda’ was soil conditions, nutrient management, cultivation management and altitude, despite its comparatively less effect, altitude had a correlation with chemical compositions; (2) there was a strong relationship between the combination of the production factors and the chemical compositions of tobacco leaves, namely, the quality of flue-cured tobacco was not determined by a single factor, but by the combination of each factor. In this study, the quality of chemical composition was relatively high when tobacco was planted in dry red soil; in continuous cropping, the previous crop should be free or legume; the growth duration should be less than 140 days after transplanting, with more than 17 remained tobacco leaves; farm manure should be 0-7500 kg/hm², phosphate fertilizer should be less than 60 kg/hm², potash fertilizer should be higher than 225 kg/hm².

CLC Number:

S572

Qian Facong,Ouyang Jin,,Yang Yongping,Xie Yonghui,Wan Lei,Wang Panlei,Lu Yao and Chen Shihua. Screening Key Factors Affecting Chemical Compositions of Kungming ‘Hongda’ Tobacco by Correspondence Analysis Method[J]. Chinese Agricultural Science Bulletin, 2016, 32(28): 41-46.

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