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In order to investigate the suitable transplanting methods of different soil types in Tianzhu Tobacco Area, a two-factor split zone experiment design was used, namely two main soil types (yellow soil and paddy soil) and five secondary transplanting methods (conventional transplanting, seedling transplanting under membrane, well cellar transplanting, duck bill transplanting and nutrient block transplanting). The effects of soil and transplanting method on the growth and economic benefit of flue-cured tobacco were studied. The results showed that the growth period of flue-cured tobacco was shorter under the yellow loam soil and paddy soil. The agronomic characters of flue-cured tobacco were better in paddy soil×well cellar transplanting and yellow soil×film seedling transplanting. The flue-cured tobacco transplanting in paddy soil and seedling transplanting in yellow soil showed better economic characteristics. The labor cost and seedling transplanting under yellow soil× film and paddy soil×well pit were lower, while the nutrient mass transplanting in yellow loam and paddy soil were higher. In Tianzhu Tobacco Area, paddy soil was transplanted by well cellar and yellow soil by small seedling under film. Flue-cured tobacco showed better agronomic characters, higher economic benefits and lower labor and cost. This study provided theoretical references for suitable transplanting methods of different soil types in Tianzhu tobacco area. [ABSTRACT FROM AUTHOR]

[Objective] The present paper aimed to clarify the curing characteristics of different quality upper leaves, such as green tobacco leaves, few rainy sunshine tobacco and multi-fermented tobacco leaves. [Method]A dark box and an electric oven were used to study the yellowing characteristics and water loss characteristics of the upper leaves of different qualities and dynamic changes of moisture, color and pigment and activity of polyphenol oxidase in flue cured tobacco during curing of Hong-hua-da-jin-yuan. [Result]In dark box and curing test, the yellowing speed of more fertilizer and turn green tobacco leaves was slower, the water loss speed was faster, the yellowing speed of rainy sunshine tobacco leaves was faster, and the water loss speed was slower;during the curing process, the degradation rate of the pigments in the turn green and more fertilizer tobacco leaves was slower, and the degradation rate of the pigments in the rainy sunshine tobacco leaves was faster;starch content was more fertilizer> turn green> rainy sunshine;polyphenol oxidase activity was rainy sunshine> more fertilizer>turn green;after curing, the proportion of ash and black bad smoke was relatively high, and rainy sunshine and more fertilizer tobacco leaves’ proportion of turn green tobacco leaves was higher, the percentage of baked green tobacco leaves was relatively high. [Conclusion] The turn green tobacco leaves are less roasting and have good curing resistance, rainy sunshine tobacco leaves are easy to roast and have poor roasting resistance, more fertilizer tobacco leaves is difficult to turn yellow, easy to brown, easy to roast and roasting resistance are poor, in the actual production process, the curing process should be adjusted according to its curing characteristics, to improve the quality of the roasted tobacco leaves. [ABSTRACT FROM AUTHOR]