Topdressing method for flue-cured tobacco

A flue-cured tobacco and fertilizer technology, applied in the field of tobacco cultivation, can solve the problems of increasing agricultural non-point source pollution, reducing the enthusiasm of tobacco growers, and increasing fertilizer input, and achieves the effects of low cost, reduced input, and increased nicotine content

Pending Publication Date: 2022-05-10
CHINA TOBACCO GUANGDONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the decrease in the number of remaining leaves, the output often decreases to varying degrees. If the proportion, average price and output value of the middle and high-grade tobacco are not compensated or even reduced, it will seriously reduce the enthusiasm of tobacco growers and it will be difficult to achieve stable and sustainable development
Additional application of foliar fertilizers, especially foliar fertilizers with high nitrogen content, can solve the problem of nicotine and upper leaves in the short term, but the increase in fertilizer input may increase the risk of agricultural non-point source pollution. , not in line with the current concept of green development

Method used

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  • Topdressing method for flue-cured tobacco
  • Topdressing method for flue-cured tobacco
  • Topdressing method for flue-cured tobacco

Examples

Experimental program
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Embodiment 1

[0037] The present embodiment provides a kind of topdressing method that is used for flue-cured tobacco, comprises two topdressings, specifically as follows:

[0038] (1) Top dressing once

[0039] The fertilizer formula (dosage per mu) is: 20kg of tobacco-specific compound fertilizer, 3.26kg of agricultural potassium nitrate, 10kg of agricultural potassium sulfate, and the total amount of nitrogen in the fertilizer is 9kg. After mixing the fertilizers well, topdressing was divided into 4 times, the mass ratio of each dosage was 1:2:2:1, and the fertilizers were sprayed on 30d, 40d, 50d and 60d after transplanting respectively.

[0040] (2) Second topdressing

[0041] Immediately (within 1 day) after topping, carry out secondary topdressing by root irrigation. The topping adopts the conventional topping method of tobacco. The preparation method of the fertilizer used in the secondary top dressing is as follows: mix 7.14 kg of agricultural potassium nitrate (ie 1 kg of nitroge...

Embodiment 2

[0043] This example provides a topdressing method for flue-cured tobacco, which differs from Example 1 only in that the amount of polyaspartic acid is changed to 0.04 kg, and other conditions refer to Example 1.

Embodiment 3

[0045] This example provides a topdressing method for flue-cured tobacco, which differs from Example 1 only in that the amount of polyaspartic acid is changed to 0.06 kg, and other conditions refer to Example 1.

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Abstract

The invention relates to a topdressing method for flue-cured tobaccos. The topdressing method for the flue-cured tobaccos comprises primary topdressing and secondary topdressing, the fertilizer applied in the secondary topdressing comprises polyaspartic acid and a nitrogen fertilizer. According to the method, a topdressing method in the flue-cured tobacco planting process is creatively improved, on the basis of a conventional topdressing method, the application time of a part of nitrogen fertilizer is shifted backwards, polyaspartic acid is further added for secondary topdressing, nitrogen elements are chelated through the polyaspartic acid, root absorption of plants to the fertilizer is remarkably promoted, and the yield of the plants is increased. The opening degree of upper leaves and the nicotine content of the flue-cured tobacco obtained through planting are greatly improved, the sugar-alkali ratio better meets the requirement range of strong-flavor type characteristic high-quality tobacco leaves, chemical components are coordinated, the economic effect of the flue-cured tobacco is improved, and the method has important application value.

Description

technical field [0001] The invention belongs to the technical field of tobacco cultivation, and relates to a topdressing method for flue-cured tobacco, in particular to a topdressing method for increasing the nicotine content and slice degree of flue-cured tobacco. Background technique [0002] In recent years, the strong-flavor style of flue-cured tobacco in Shixing and Nanxiong smoking areas in Shaoguan has been significantly weakened. The main reason is that the water-soluble sugar content of flue-cured tobacco is increasing year by year, while the nicotine content is decreasing year by year. The sugar-alkaline ratio is too high, which eventually leads to insufficient physiological strength of tobacco leaves and flat taste, making it difficult to provide stable and high-quality raw materials for industrial formulations. At the same time, the problem of upper tobacco leaf production is also worthy of attention. After the quality of the upper 6 leaves is improved, at least ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00C05G5/20C05G1/00
CPCA01C21/005C05C5/02C05G5/20C05D1/02C05G1/00C05C11/00
Inventor 张玺叶卫国雷佳邓世媛李淮源廖钰文志强王晓剑陈建军
Owner CHINA TOBACCO GUANGDONG IND
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