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Method for producing an organic selenium-rich Huangshan Maofeng tea

A technology rich in organic selenium and selenium-enriched nutrients, applied in fertilization methods, botanical equipment and methods, horticulture, etc., can solve problems such as low yield, poor quality, unstable selenium content in tea, and achieve low pollution risk and low Pollution risk, effects of good crop uptake controllability

Inactive Publication Date: 2010-07-21
SUZHOU SETEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, selenium-enriched tea is mainly produced in selenium-enriched areas, but the selenium-enriched tea production areas are only Enshi, Hubei and Ziyang, Shaanxi, with poor quality and low output
In addition, the spatial variation of selenium content in soil in selenium-enriched areas is large, and the selenium content of tea leaves is unstable.
In addition, in some areas, selenium-enriched tea is produced by spraying selenium fertilizer on leaves or applying sodium selenite solution in the tea making process. However, the above-mentioned method of producing selenium-enriched tea has potential safety hazards, such as: spraying selenium Fertilizers generally use high-concentration sodium selenite solution, resulting in a large amount of inorganic selenium residues on the surface of tea leaves, which is easy to poison

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]A Huangshan Maofeng tea base in Huangshan City, selects the nano-selenium plant nutrient produced by Suzhou Selenium Technology Co., Ltd., the selenium content is 5000 micrograms per gram, and mixes it with soil with a moisture content of 20% at a ratio of 1:3. Selenium nutrient, on November 13 according to every mu 5Kg nano-selenium plant nutrient (calculated as 25g / mu with selenium, the amount of soil mixed in is not counted, the same below) is carried out furrow application, promptly is apart from tea tree root 10- 20cm, dig a 10-20cm deep ditch, apply it into the ditch and fill it. After the tea leaves germinated (about February 10 of the second year), the above-mentioned selenium-enriched nutrient was evenly spread on the tea tree roots at 4Kg / mu (20g / mu in terms of selenium).

[0038] After the tea is made, the selenium content in the finished tea and the proportion of organic selenium in the tea are tested.

[0039] During the fertilization process, due to the sm...

Embodiment 2

[0041] A Huangshan Maofeng tea base in Huangshan City selected nano-selenium plant nutrients produced by Suzhou Selenium Valley Technology Co., Ltd., with a selenium content of 5000 micrograms per gram, and mixed it with soil with a moisture content of 16% at a ratio of 1:4 to prepare rich tea. Selenium nutrient, according to 10Kg / mu (calculated as selenium is 50g / mu) on November 13, spreads evenly in tea tree root. And fertilize before the year to increase the selenium content of the tea buds. After the tea leaves germinate (about mid-February of the second year), dig a 10-20cm deep ditch at a distance of 10-20cm from the root of the tea tree, and apply the above-mentioned selenium-enriched nutrient at 6Kg / mu (calculated as selenium as 30g / mu). Ditch and fill.

[0042] After the tea is made, the finished tea is tested for selenium content.

[0043] The difficulty of uniform application becomes smaller, the standard deviation of selenium content in selenium-enriched Huangs...

Embodiment 3

[0045] A Huangshan Maofeng tea base in Huangshan City selected nano-selenium plant nutrients produced by Suzhou Selenium Technology Co., Ltd., with a selenium content of 5000 μg / g, and mixed it with soil with a moisture content of 13% at a ratio of 1:4 to prepare rich For the selenium nutrient, dig a 10-20cm deep ditch at a distance of 10-20cm from the root of the tea tree on November 13, and apply the above-mentioned selenium-enriched nutrient evenly into the ditch according to the amount of 20Kg per mu (calculated as selenium as 100g / mu). and landfill. And fertilize before and in early spring to increase the selenium content of tea buds. After the tea leaves germinated (about the middle of February in the second year), the above-mentioned selenium-enriched nutrient was evenly sprinkled on the tea tree roots at 2Kg / mu (10g / mu in terms of selenium).

[0046] After the tea is made, the finished tea is tested for selenium content.

[0047] The difficulty of uniform application...

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Abstract

The invention relates to a method for producing an organic selenium-rich Huangshan Maofeng tea. The method comprises the following steps of: (1) mixing a nanometer selenium plant nutrient and soil to obtain a selenium-rich nutrient; (2) during November to December, applying the selenium-rich nutrient into the tea garden; (3) during February to March of the next year, after the tea leaf is germinated, additionally applying the selenium-rich nutrient into the tea garden. The Huangshan Maofeng tea produced by the method has the advantages that the tea leaf is rich in the organic selenium, therefore the form is safe; the selenium content in the tea leaf is stable, achieves more than 0.25mg / g, and conforms to the standard of the selenium-rich tea specified by the national ministry of agriculture, and the organic selenium content accounts for more than 80%.

Description

technical field [0001] The invention relates to a production method of Huangshan Maofeng tea rich in organic selenium. Background technique [0002] The picking standard of super-grade Huangshan Maofeng is one bud and one leaf first development, and the picking standards of 1-3 grade Huangshan Maofeng are one bud and one leaf, one bud and two leaves first development; one bud one and two leaves; one bud two and The first exhibition of three leaves. The super-grade Huangshan Maofeng is picked around Qingming, and the 1-3 grade Huangshan Maofeng is picked around Guyu. After the fresh leaves enter the factory, they are sorted first to remove frostbitten leaves and leaves damaged by diseases and insect pests, and pick out leaves, stems and tea fruit that do not meet the standard requirements to ensure that the quality of buds and leaves is uniform. Then spread the fresh leaves of different tenderness separately to lose part of the water. In order to preserve the quality and f...

Claims

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Application Information

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IPC IPC(8): A01C21/00A01G1/00
Inventor 毕德尹雪斌黄阳刘颖李飞
Owner SUZHOU SETEK
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