Tobacco grafting planting method for reducing nitrosamine content in tobacco
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A planting method and nitrosamine technology, applied in the fields of botanical equipment and methods, grafting, horticultural methods, etc., can solve the problems of easy lodging, loss of grafting significance, and difficulty in success, so as to increase wind resistance and avoid lodging fractures. , the effect of preventing the proliferation of bacteria
Active Publication Date: 2021-07-23
HENAN AGRICULTURAL UNIVERSITY
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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
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Embodiment 1
[0033] A tobacco grafting planting method for reducing the content of nitrosamines in tobacco, wherein: the wild species Solanum torvum Swartz (Solanum torvum Swartz) is used as the rootstock, and the tobacco crops are used as the scion for grafting planting, specifically comprising the following steps:
[0034] (1) Selection of rootstock and scion: the wild species Solanum torvum Swartz was used as the rootstock, and the tobacco crop was used as the scion; in this example, Yunyan 87 was used as the scion.
[0035] (2) Seedling cultivation: Sow rootstock seeds and scion seeds to raise seedlings. When the eggplant rootstock seedlings grow to 5-6 true leaves and the tobacco seedlings grow to 5-6 true leaves, take out the eggplant rootstock seedlings and tobacco seedlings and prepare for grafting; Rootstock seeds are sown 25-30 days earlier than scion seeds
[0036] (3) Grafting:
[0037] a. When grafting, choose a cool day or cloudy day, the temperature of grafting is 20 ℃ ~ 25 ℃...
Embodiment 2
[0045] Repeat embodiment one, following difference is arranged: described sprout inhibitor comprises n-octanol, n-decyl alcohol, copper sulfate, ethanol and water, and each component weight percent is n-octanol 2%, n-decyl alcohol 3%, Copper sulfate 1.5%, ethanol 12%, and the balance is water.
Embodiment 3
[0047] Repeat embodiment one, following difference is arranged: described sprout inhibitor comprises n-octanol, n-decyl alcohol, copper sulfate, ethanol and water, and each component weight percentage is n-octanol 3%, n-decyl alcohol 3%, Copper sulfate 2%, ethanol 15%, and the balance is water.
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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...
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