Method for improving tobacco leaf quality, and application thereof

Abstract

The invention belongs to the technical field of tobacco treatments, and particularly relates to a method for improving tobacco leaf quality, and application thereof. According to the invention, five treatment modes are designed: CK: conventional treatment; T1: after topping, girdling stem bases; T2: after topping, girdling upper seven pieces; T3: after harvesting the lower leaves, girdling the upper seven leaves; T4: after harvesting the lower leaves, girdling 7 upper leaves, and applying foliar potassium fertilizer. Researches show that compared with CK, after lower leaves are harvested, 1 cm stems at the upper seven-leaf positions are blocked, and the effect of promoting the opening of upper leaves and increasing the leaf area is most remarkable by spraying foliar potassium fertilizer. Compared with CK, the T4 treatment has the advantages that the activity of oxidative stress resisting enzymes such as SOD, POD, and CAT is remarkably improved, the activity of MDA is reduced, and the free radical scavenging capacity is improved. Compared with CK, the net photosynthetic rate of each treatment is slightly reduced, and leaf ripening and yellowing are promoted.

Description

technical field [0001] The invention belongs to the technical field of tobacco processing, and in particular relates to a method and application for improving the quality of tobacco leaves. Background technique [0002] Tobacco raw materials are the foundation of the cigarette industry, and the development of cigarette brands is inseparable from the guarantee of high-quality tobacco leaf raw materials. In recent years, with the regular control of tobacco leaf production and planting scale and purchase plan, available domestic high-quality central tobacco leaf resources have become increasingly scarce. At the same time, with the improvement of cigarette structure, low-tar cigarettes have become the mainstream of products, and slim cigarettes and short cigarettes have developed rapidly, which puts forward new requirements for tobacco leaf raw materials. In this context, re-expanding the source of high-end cigarette raw materials and reducing the dependence on middle tobacco l...

AI Technical Summary

Problems solved by technology

However, in the current agricultural production, the upper leaves are poorly opened, the maturity of harvesting is not enough, and the phenomena of variegated smoke such as blue veins, floating greens, and hanging ash are prone to appear after roasting, resulting in serious loss of income for tobacco farmers; Tight tissue structure, high content of starch and nicotine, low sugar-base ratio, and uncoordinated internal chemical components lead to low usability, resulting in high inventory pressure

The proportion of purchasing upper leaves in the whole country is 27.6%, in our province it is 24%, and the proportion of industrial allocation is only 17.7%, which seriously affects the interests of tobacco farmers and enterprises

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