Flue-cured tobacco topping method

Abstract

The invention discloses a flue-cured tobacco topping method. The flue-cured tobacco topping method is characterized in that in a topping process, useless leaves and inflorescences at the upper parts of tobacco plants are removed and useful leaves are kept; and meanwhile, at least two sections of stems at the upper ends of the useful leaves are kept. According to the flue-cured tobacco topping method disclosed by the invention, tender stems at the tops of the tobacco plants are remained, so that the tender stems at the tops of the tobacco plants are organized together to realize certain apical dominance effect, and furthermore, the growth potential of the tobacco plants can be automatically adjusted, the nicotine and special leaf weight of upper leaves are reduced and the sensory quality of the upper leaves is improved.

Description

technical field [0001] The invention relates to the technical field of crop planting, in particular to a method for topping flue-cured tobacco. Background technique [0002] Tobacco (Nicotiana tabacum) is an annual herbaceous plant belonging to the Solanaceae Nicotiana family. The root system can synthesize nicotine, and the plant height is 1-3 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 3 to 4 leaves are called lower second shed leaves; the middle 6 to 8 leaves are called waist leaves ; The 3 to 4 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 second shed leaves are collectively called the lower leaves, the upper second shed leav...

AI Technical Summary

Problems solved by technology

[0006] One is to strengthen field management, appropriately reduce the use of nitrogen fertilizer, increase planting density and pay attention to water supply in the late growth period, but it may cause a decrease in yield. Under the current purchase policy, the proportion of high-quality tobacco is likely to decrease.

[0007] The second is to adopt scientific harvesting and roasting methods. The one-time cutting and roasting technology of upper leaves can significantly improve the appearance quality and grade of upper leaves. The one-time chopping and roasting technology increases the difficulty of smoking during the curing operation and the capacity of the curing room is insufficient; or discarding the roasting of the upper 2 to 3 leaves has a significant effect on improving the proportion of the middle and upper levels and adjusting the structure of the tobacco leaves, but it still cannot fully meet the industrial needs. At the same time, it leads to lower yield and lower income of tobacco farmers.

[0008] 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

However, the growth of the top center flower will consume nutrients, resulting in a certain degree of yield reduction; the leaves and flowers will cause the tobacco farmers to keep their own seeds, which is not good for the purity and management of tobacco seeds

In addition, plastic bags left in the smoke field will pollute the environment

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