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A technology of nicotine and content, applied in the field of tobacco planting, to achieve the effects of normal nutrient absorption, high survival rate of grafting, and normal growth
Active Publication Date: 2018-06-01
HUNAN AGRICULTURAL UNIV
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Abstract
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After searching, no report was found on the technology of quantitatively regulating the nicotine content of flue-cured tobacco by combining grafting and soil cultivation technology
Method used
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Experimental program
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Embodiment 1
[0026] Embodiment 1 The acquisition of grafted seedlings
[0027] (1) Rootstock cultivation
[0028] On March 9th, the seeds of Torubum were soaked in a gibberellin solution with a concentration of 100mg / L for 48h, washed, and put into a climate box on March 11th for variable temperature germination (25°C during the day, 12h; 16°C for 12 hours), and on March 17, 50% of the seeds turned white, and they were sown into the substrate (flue-cured tobacco seedling cultivation substrate) by the tray seedling raising method, 1 seed per hole. After sowing, the seedling trays were placed in the greenhouse, and water and fertilizer management was strengthened.
[0029] (2) Scion cultivation
[0030] On March 23, when more than 50% of the rootstock seedlings had two cotyledons unfolded, flue-cured tobacco seedling cultivation was carried out, the variety was K326 (coated seeds), and the floating seedling cultivation method was adopted, and the substrate was selected as a commercially av...
Embodiment 2
[0033] Field test of embodiment 2 grafted seedlings
[0034] On May 20th, the flue-cured tobacco grafted seedlings were transplanted, and the grafted seedlings and K326 self-rooted seedlings were transplanted to the field with a row spacing of 0.5m*1.2m, and the grafting joint was about 2cm above the ridge surface. Transplant the grafted seedlings to the field. When transplanting, be careful not to plant the grafted wound into the soil. When the soil is uncovered 30 days after transplanting, the induced amount of adventitious roots can be artificially controlled by setting different heights of the soil to achieve control of nicotine synthesis. Quantitative purpose.
[0035] There are 4 treatments in the experiment, and the specific treatment methods are as follows:
[0036] Table 1 Detailed table of soil height treatment
[0037] deal with
Approach
processing 1
The grafted seedlings are as high as 70-80cm, and the film is removed and the soil is raise...
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Abstract
The invention relates to the field of tobacco planting, and particularly discloses a method for adjusting and controlling nicotine content of tobacco. The nicotine content of the tobacco is adjusted and controlled by combining grafting with the means of adjusting and controlling transplanting time and the ridging height. The overground part of the tobacco is grafted to a Solanum torvum rootstock with no nicotine synthesis ability, tobacco plants with reconstructed root systems are obtained, the occurrence amount of adventitious roots is artificially controlled according to different ridging heights, and the purpose of adjusting and controlling the nicotine synthesis amount and flue-cured tobacco nicotine content is achieved by controlling nicotine synthesis sources (root systems). The grafting combination affinity is good, the grafting survival rate is high and reaches 95% or above, the grafted tobacco plants normally grow and have no remarkable difference compared with own-rooted tobacco plants, nutrient absorption is normal, and other quality indexes of flue-cured tobacco leaves are reserved while low nicotine content is achieved.
Description
technical field [0001] The invention relates to the field of tobacco planting, in particular to a method for regulating the nicotine content of tobacco. Background technique [0002] Flue-cured tobacco is the main raw material of Chinese cigarettes. The purpose of smoking is to take nicotine to obtain physiological satisfaction. The single index of nicotine accounts for 0.17 in the evaluation index system of chemical composition of flue-cured tobacco. Nicotine is an important factor determining the quality of flue-cured tobacco. At present, the problem of high nicotine content in flue-cured tobacco seriously restricts the industrial availability of flue-cured tobacco in my country. Aiming at this problem, domestic scholars have carried out a lot of research. For example, reducing the amount of nitrogen fertilizer can reduce the nicotine content of flue-cured tobacco to a certain extent, but it will reduce the yield of tobacco leaves and have an adverse effect on the aroma ...
Claims
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