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Tobacco seedling cultivation method

A cultivation method and technology of tobacco seedlings, applied in botany equipment and methods, cultivation, soilless cultivation, etc., can solve the problems of restricting the yield and quality of field tobacco leaves, the hysteresis of tobacco seedling quality, and the weakening of absorption function, etc., and achieve the goal of tobacco leaf economy Significant benefits, coordination of internal chemical components, and the effect of reducing nicotine content

Inactive Publication Date: 2019-02-19
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual promotion, it is found that the following problems still exist: the tobacco seedlings grow in a high-humidity environment for a long time, the root system is underdeveloped, the root system activity is low, the absorption function is weakened, the growth of the seedbed is slow in the early stage, the seedling period after transplanting is long, and the stress resistance is poor. , which restricts the further improvement of the yield and quality of field tobacco leaves
[0008] At present, gibberellin is generally sprayed in the middle and late stages of tobacco leaf growth, and it alone or interacts with potassium fertilizers to improve the quality of tobacco leaves to a certain extent in the short term, but field spraying is affected by the weather, and the spraying effect is limited
At the same time, during the seedling cultivation period, light supplementation treatment is often carried out according to the defects of the tobacco seedlings by using different light quality characteristics, which lags behind the improvement of the quality of the tobacco seedlings, and the effect needs to be improved

Method used

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  • Tobacco seedling cultivation method
  • Tobacco seedling cultivation method
  • Tobacco seedling cultivation method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] 1. Test material

[0029] The variety of flue-cured tobacco tested was Yunyan 99. The experimental group used 6 light sources (coverage area: 2.7744m 2 ) blue LED lamp (36W, 450nm, the light intensity at 0.3m under the lamp is 180μmol·m -2 ·s -1 ), gibberellin (using GA 3 ) Concentration 0mg·L -1 , 50mg·L -1 , 100mg·L -1 (solvent is water). The light source used in the control group was white light. The experiment was carried out in the seedling shed of Northwest A&F University.

[0030] 2. Experimental design

[0031] The test is carried out as follows:

[0032] 1) The surroundings of the seedling pool 5 are covered with a black light-shielding film material (a light-tight space is formed, that is, the light-shielding seedling shed 1), and 6 blue LED light tubes are built in to form the LED light source 2, which is suspended by the lifting device 3 Above the seedling pond 5 ( figure 1 );

[0033] 2) After sowing, put the seedling tray into the seedling pon...

example 2

[0058] 1. Test material

[0059] The variety of flue-cured tobacco tested was Yunyan 99. The light source used in the experimental group was 6 red LED tubes (36W, 660nm, the light intensity at 0.3m under the lamp was 180μmol·m -2 ·s -1 ), gibberellin (using GA 3 ) Concentration 0mg·L -1 , 50mg·L -1 , 100mg·L -1 . The light source used in the control group was white light. The experiment was carried out in the seedling shed of Northwest A&F University.

[0060] 2. Experimental design

[0061] The test is carried out as follows:

[0062] 1) The seedling pond 5 is covered with black light-shielding film material, and 6 are built in (coverage area: 2.7744m 2 ) LED light tube (hanging above the seedling pond);

[0063] 2) After sowing, put the seedling tray into the seedling pond and start the supplementary light treatment. The supplementary light cycle is 12h·d -1 , the supplementary light time is from 8:00 in the morning to 20:00 in the evening (no natural light is re...

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Abstract

The invention discloses a tobacco seedling cultivation method. The method includes applying artificial illumination and spraying GA3 in tobacco seedling cultivation, wherein the illumination treatmentadopts a red light or blue light LED (Light Emitting Diode) light source, and the spraying concentration of GA3 is 50mg L-1. Combined treatment is utilized to promote the root growth of tobacco seedlings and improve the activity of key enzymes for carbon and nitrogen metabolism, and thus the quality of the tobacco seedlings is improved, and meanwhile, the economic benefits of the transplanted tobacco leaves are increased, the total nitrogen and potassium contents of the roasted tobacco leaves are increased, the contents of starch, reducing sugar, total sugar and nicotine are decreased, the nitrogen-alkali ratio is increased, the chemical components of the roasted tobacco leaves tend to be coordinated, and the internal quality is improved.

Description

technical field [0001] The invention belongs to the field of flue-cured tobacco planting, and relates to a method for improving the quality of tobacco seedlings and promoting the growth and development, yield and quality of transplanted tobacco leaves. Background technique [0002] Flue-cured tobacco (Nicotiana tabacum L.) is an economic crop for the purpose of harvesting tobacco leaves, and seedling cultivation is the primary link in tobacco leaf production. Cultivating timely, sufficient, orderly and robust tobacco seedlings is the basis for obtaining high-quality and suitable tobacco leaves. Because floating seedlings can promote the germination of tobacco seeds and the growth and development of tobacco seedlings, it is widely used in flue-cured tobacco seedlings because of its high degree of intensification, which is convenient for unified management of seedbeds, avoids the spread of germs, and reduces the labor intensity of tobacco farmers. However, in the actual promot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G31/00A01G31/02
CPCA01G31/00A01G31/02Y02P60/21
Inventor 张立新徐雪东李司童韦成才袁帅穆耀辉王平平彭智良张永峰
Owner NORTHWEST A & F UNIV
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