Abstract:

In order to study the adaptability of the tobacco varieties ‘Yunyan 116’ and ‘Yunyan 300’ in the Hechi tobacco area of Guangxi, and to clarify the suitable varieties for high-quality flue-cured tobacco cultivation in the Hechi area, two experimental sites in Tianhe Town of Luocheng County, and Liuzhai Town of Nandan County in Hechi City were selected to carry out the experiments. Taking the main variety in Hechi tobacco area ‘K326’ as the control, the adaptability analysis of ‘Yunyan 116’ and ‘Yunan 300’ tobacco varieties was carried out, and the comprehensive investigation and analysis of agronomic traits, economic traits, natural morbidity rate in the field, and chemical composition and sensory and appearance quality evaluation of the flue-cured tobacco were performed. Compared with ‘K326’, the field growth potential, production value, proportion of medium- and top-grade cigarettes, and the sensory and appearance quality of tobacco leaf of ‘Yunyan 116’ in the two experimental sites were better than that of the control, and the rate of field natural morbidity was low; whereas, agronomic and economic traits, and the evaluation of the sensory quality of tobacco leaf of ‘Yunyan 300’ in the Liuzhai site were comparable to that of ‘K326’, but the incidence rates of black tibial disease and green blight in the Tianhe site were significantly higher than that of the control, and the overall performance was slightly worse than that of ‘K326’, showing slightly poorer adaptability; moreover, Mantel analysis showed that climatic spot disease had a significant effect on agronomic traits in both pilot sites. The comprehensive evaluation index showed that ‘Yunyan 116’ had the highest evaluation index, and strong ecological adaptability to the environment, which was a broadly adapted variety for large-scale popularization of planting in Hechi tobacco region.

Key words: tobacco, variety selection, adaptability, Hechi tobacco-growing region, comprehensive evaluation