In order to explore the appropriate harvest maturity of cigar wrapper leaves,the effects of different harvest maturity on the main ag-ronomic characters, physical indicators, chemical components and appearance quality of cigar wrapper middle leaves after air-curing were studied.The results showed that with the increase of harvest maturity, the SPAD value and water content of fresh wrapper leaves decreased, while the chromaticity value increased.After air-curing, the leaf thickness, leaf surface density and tensile force of leaves first increased and then decreased.The ratio of two sugars first increased and then decreased, while the nitrogen base ratio and potassium chloride ratio decreased;The scores of maturity and oil content increased, while the scores of branch thickness and flatness decreased.Considering the physical charac-teristics, chemical composition and appearance quality, the appearance characteristics of the cigar wrapper middle leaves that were suitable for harvest maturity:leaf color was greenish yellow ( greenish to yellowish) , with 1/3 of the main veins turning white, and 1/4 of the branch veins turning white with a small amount of tomenta falling off.
维普
万方数据