Flue-cured tobacco cultivation method

Abstract

The invention relates to the technical field of crop planting, in particular to a flue-cured tobacco cultivation method. According to the flue-cured tobacco cultivation method provided by the invention, top flowers of a tobacco plant are preserved for topping and comprise 1-3 flowers at the topmost end in a tobacco flower sequence; and as center flowers are not removed, the top end growth advantage of the tobacco plant and the synthesis of endogenous auxin are kept, the growth and the development of upper tobacco leaves of flue-cured tobacco can be regulated and controlled, the development of axillary buds and roots can be restrained, thus the generation of nicotine can be reduced, the content of the nicotine in the tobacco leaves can be reduced, and the quality of the tobacco leaves, particularly the quality of the upper tobacco leaves, can be increased.

Description

technical field [0001] The invention relates to the technical field of crop planting, in particular to a flue-cured tobacco cultivation method. Background technique [0002] Tobacco (Nicotiana tabacum) is an annual herbaceous plant of the family Solanaceae. Roots can synthesize nicotine. The plant height is 1 to 3 meters. The stem is erect, and each leaf axil has axillary buds, which can germinate into branches. The leaves are alternate and arranged in a spiral shape. The planting parts of tobacco leaves can be divided into five parts: the lower 2 to 3 leaves are called foot leaves; the upper 4 to 5 leaves are called lower second shed leaves; the middle 4 to 6 leaves are called waist leaves ; The 4 to 5 leaves in the middle are called Shangerpeng leaves; the 3 to 4 leaves at the top of the tobacco plant are called top leaves. The foot leaves and the lower two shed leaves are collectively called the lower leaves, and the upper two sheds and the top leaves are collectivel...

AI Technical Summary

Problems solved by technology

[0005] In order to reduce the nicotine content of the upper leaves, there are three main methods adopted in the current flue-cured tobacco production: one is to strengthen field management, appropriately reduce the use of nitrogen fertilizer and pay attention to the use of potassium fertilizer, reduce the planting density and pay attention to water supply in the later stage of growth, but As a result, the cost of planting is increased and the amount of labor is increased

The second is to adopt scientific harvesting and roasting methods. The one-time chopping and roasting technology of upper leaves can significantly improve the appearance quality and grade of upper leaves. The nicotine content increases due to the growth of the upper leaves (leaves in the upper two sheds) in the field, and the one-time chopping and roasting technology of the upper leaves makes it more difficult to smoke in the roasting operation; or discard the roasting of the upper 2-3 leaves, Increasing the proportion of middle and upper grades and adjusting the structure of tobacco leaves has obvious effects, but it still cannot fully meet the needs of the industry, and at the same time cause a decrease in production and a decrease in the income of tobacco farmers

The third is to use growth regulating substances. The use of growth regulating substances can effectively promote the opening of upper leaves, reduce alkali and increase potassium, improve the quality and aroma of upper leaves, but still cannot change the morphological characteristics of upper leaves, especially the use of upper leaves in the cigarette industry. There is still a gap in the quality of the middle leaves

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