Chemical control technology for inhibiting apical dominance of flue-cured tobacco

Abstract

The invention relates to a chemical control technology for inhibiting the apical dominance of flue-cured tobacco and belongs to the technical field of culture of the flue-cured tobacco. The technology comprises the following steps of (1) preparing 150 to 200 times of liquid from an existing sprout inhibition agent or growth regulator for later use; (2) 55 to 60 days after the flue-cured tobacco is transplanted into a big field, carrying out flower bud differentiation on tobacco plants for use; (3) in the afternoon on sunny days, filling the liquid into a container and directly applying the liquid on flower buds of the flue-cured tobacco by a writing brush or directly spraying the liquid on the flower buds by a small sprayer until the flower buds are wet; (4) carrying out links of field management, tobacco leaf harvesting and the like according to a sound tobacco production technology. The technology disclosed by the invention keeps part of the apical dominance; the tobacco plants have no axillary buds; labor in the artificial topping and sprouting links can be reduced; inflorescence growth can be controlled; the tobacco plants do not blossom up; nutrients in the tobacco plants can be guaranteed to be supplied to leaves at the upper part in a centralized manner and yield is ensured; part of the apical dominance is kept; distribution and effects of endogenous hormone of the tobacco plants are not destroyed; content of nicotine in the tobacco leaves is obviously reduced; content of potassium in blades is obvious improved; interior quality is obviously improved.

Description

technical field [0001] The invention relates to a chemical control technology for suppressing the top edge of flue-cured tobacco, and belongs to the technical field of flue-cured tobacco cultivation. Background technique [0002] At present, in flue-cured tobacco cultivation technology, it is necessary to cap and pruning flue-cured tobacco. This has a comprehensive impact on tobacco plants. First, it can promote root development, promote the germination of secondary roots, and increase the ability to absorb and synthesize nutrients. Leaf growth is expanded and quality supply to the upper leaves is improved, especially at the top. Regulate the growth and appearance of tobacco plants to achieve high-quality and high-yield tobacco leaves, reduce the damage of diseases and insect pests, and lay the foundation for improving the quality and quality of tobacco leaves. Therefore, flue-cured tobacco topping is an important technology for post-field management during flue-cured toba...

AI Technical Summary

Problems solved by technology

The topping process itself requires labor, and the removal of the top advantage will promote the occurrence of a large number of axillary buds. In production, a lot of manpower is required to remove the axillary buds. The use of chemical bud suppression will also cause incomplete bud suppression, and manual bud removal is required; After the top dominance, the distribution and function of endogenous hormones in tobacco plants change, and the content of potassium, a key quality element in tobacco leaves, is significantly reduced, which is not conducive to quality improvement; the third is that after topping removes the top dominance, it promotes a large amount of absorption by the roots of tobacco plants Soil nitrogen causes the single leaf weight of the upper tobacco leaf to be too large and the nicotine content to be high, resulting in stiff leaves, tight tissue structure, too thick leaves, and narrow leaves, which affect the value of industrial use

If the flue-cured tobacco is not topped, a large amount of nutrients in the tobacco plant will be consumed by fireworks and seeds, and the single leaf weight of the upper tobacco leaf is low, the leaves are small, the yield is low, the nicotine content is low, and the industrial applicability is poor