Tobacco grafting planting method for reducing nitrosamine content in tobacco

Abstract

The invention relates to a tobacco grafting planting method for reducing the nitrosamine content in tobacco. According to the method, tobacco is planted by taking wild solanum torvum as a stock and tobacco as a scion by adopting a grafting method, and a grafting cut is smeared with a bug inhibitor and wound with a preservative film to inhibit the growth of adventitious roots at the grafting cut, thereby inhibiting the growth of the adventitious roots. The synthesis of specific nitrosamine precursors is prevented, the content of nitrosamine in tobacco leaves is reduced, and when the grafted tobacco seedlings are transplanted and earthed up, the roots of the grafted tobacco seedlings can reach the normal earth-up height, and the earth-up height is high enough, so that the supporting force of the roots of the tobacco plants is increased, the wind resistance of the tobacco plants is improved, the phenomena of lodging, breakage and the like are avoided, and the yield of the tobacco leaves is increased. Meanwhile, adventitious roots are prevented from growing on tobacco stems at the upper part of the grafting surface.

Description

Technical field: [0001] The invention belongs to the technical field of improving tobacco quality and reducing tobacco damage to human health, and in particular relates to a tobacco grafting and planting method for reducing the content of nitrosamines in tobacco. Background technique: [0002] Tobacco-specific nitrosamines (TSNA) mainly include N-nitrosonornicotine (NNN), 4-(N-methyl-nitrosamine)-1-(3-pyridyl)-1-butanone (NNK), N-nitrosoanatabine (NAT) and N-nitroso anatabine (NAB), which have been confirmed to be associated with tumors in the lung, oral cavity, esophagus, pancreas, liver, etc. produce related. [0003] Nitrate is the precursor of tobacco-specific nitrosamines, and its content level is an important indicator of TSNAs accumulation. Nitrate nitrogen is the main form of nitrogen absorbed by plants. It is absorbed and utilized by plants through nitrogen reduction and assimilation. However, when tobacco leaves are stored in the warehouse after harvest, the nitr...

AI Technical Summary

Problems solved by technology

However, during the growth of tobacco, the diameter of the tobacco stem will gradually increase. In the middle and late stages of tobacco plant growth, the diameter of the tobacco stem is much larger than the diameter of the stem of eggplant at the mature stage. low, resulting in the fragile root of the grafted plant, which is not enough to support the gradually increasing diameter of the tobacco rod and the unfolded tobacco leaves, resulting in poor wind resistance of the tobacco plant, and it is very easy to lodging in the late growth stage of the tobacco plant, and even break from the grafted part. It is almost impossible to succeed in Datian, and the output and income of tobacco leaves cannot be guaranteed

However, if the soil height covers the grafting interface, it is easy to grow a large number of adventitious roots rapidly at the grafting interface, and become the main body of the root system, and then the root system synthesizes alkaloids, the precursor substance of tobacco-specific nitrosamines, and loses the meaning of grafting

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