Method for producing an organic selenium-rich Biluochun tea

A selenium, green snail, and organic-rich technology, applied in fertilization methods, botanical equipment and methods, horticulture, etc., can solve the problems of large residual amount of inorganic selenium on the surface of tea leaves, difficulty in quantification, and easy side effects, and achieve good crop absorption. Controllability, low risk of contamination, effect of stable selenium source

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

AI Technical Summary

Problems solved by technology

However, there are potential safety hazards in the above-mentioned method of producing selenium-enriched tea, such as: spraying selenium fertilizer generally uses a high-concentration sodium selenite solution, which causes a large amount of residual inorganic selenium on the surface of the tea leaves, which is difficult to quantify and is prone to side effects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Experimental experience found that: the amount of selenium fertilized per mu is 60-300g, and the selenium content and organic selenium ratio of Biluochun tea are the best. If the application rate is less than 60g, the selenium content of new Biluochun tea will not reach 0.25 μg / g, if it exceeds 300g, the cost will increase significantly, and the leaching loss in the soil layer will be obvious, but the selenium content in the new tea will not increase significantly.

[0025] The nano-selenium plant nutrient is mixed evenly with the soil to form a selenium-enriched nutrient. Mixing soil can make it easier for the nano-selenium plant nutrient to disperse evenly, which is more conducive to the absorption of selenium by the root system of the tea tree, and the selenium content in the tea is relatively stable. The preferred ratio of the nano-selenium plant nutrient to the soil is 1:3-6.

[0026] Before and after mid-November, apply the selenium-enriched nutrient ditch prepar...

Embodiment 1

[0031] A Biluochunye base in Suzhou City selects nano-selenium plant nutrients produced by Suzhou Selenium Valley Technology Co., Ltd., wherein the selenium content is 5000 μg / g, and is mixed with soil with a moisture content of 20% at a ratio of 1:2 to obtain selenium-enriched Nutrients were applied in furrows on November 13 at 8Kg per mu (40g / mu in terms of selenium), that is, dig a 10-20cm deep ditch 10-20cm away from the tea tree root, apply it in the ditch and bury it. After the tea leaves germinated (about February 10 of the second year), the above-mentioned selenium-enriched nutrient was evenly spread on the roots of the tea trees according to 6Kg / mu (30g / mu in terms of selenium).

[0032] After the tea is made, the selenium content and organic selenium ratio in the finished tea are tested.

[0033] During the fertilization process, due to the small amount of nano-selenium plant nutrient and soil = 1:2, it is still difficult to apply evenly. The standard deviation of se...

Embodiment 2

[0035] A Biluochunye base in Suzhou City selects nano-selenium plant nutrients produced by Suzhou Selenium Valley Technology Co., Ltd., with a selenium content of 5000 μg / g, and mixes it with soil with a moisture content of 16% at a ratio of 1:3 to obtain selenium-enriched nutrition. agent, on November 13 according to 10Kg / mu (calculated as selenium is 50g / mu), evenly sprinkled on the roots of tea trees. 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 deep 10-20cm ditch at a distance of 10-20cm from the root of the tea tree, and apply the above-mentioned selenium-enriched nutrient at 20Kg / mu (calculated as 100g / mu with selenium) Ditch and fill.

[0036] After the tea is made, the selenium content and organic selenium ratio in the finished tea are tested.

[0037] The difficulty of uniform application becomes smaller, the standard deviation of selenium content in sele...

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Abstract

The invention relates to a method for producing an organic selenium-rich Biluochun tea. The method comprises the following steps of: (1) mixing a nanometer selenium plant nutrient and soil in a proportion of 1:3-6 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 roots in the tea garden. The Biluochun 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%, therefore the tea has double health care function.

Description

technical field [0001] The invention relates to a production method of Biluochun rich in organic selenium. Background technique [0002] Biluochun, also known as "Scaring Fragrance" and "Buddha's Heart", belongs to green tea and is one of the "Top Ten Famous Teas" in my country. The tea is produced in Dongting East and West Mountains of Taihu Lake in Suzhou. It is famous at home and abroad for its beautiful shape, bright color, strong fragrance and mellow taste. Its characteristics are: slender cords, curled into snails, covered with hairs, silver and white hidden green, elegant fragrance, fresh and mellow, and long aftertaste. The soup is green and clear, and the bottom of the leaves is green and bright. It is known as "one tender (buds and leaves) and three delicacies" (color, aroma and taste). Local tea growers describe Biluochun as: "copper wire, spiral, hairy, floral and fruity, fresh and refreshing." Generally, there are 40,000 to 70,000 buds per catty. [0003] Ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01C21/00
Inventor 毕德尹雪斌黄阳刘颖李飞
Owner SUZHOU SETEK
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