Production method of selenium-enriched guapian tea

Abstract

The invention relates to a production method of a selenium-enriched guapian tea. The production method is characterized by comprising the following steps of: spraying organic selenium liquor on soil on tea tree leaves and roots before picking the gupian tea, wherein spraying concentration is 50ppm-4000 ppm, and dosage per mu is 5-60 liters; spraying once every 5-7 days, continuously spraying for 2 to 5 times; then, completing the picking after spraying for 2 to 5 times; and finally, processing the picked fresh gupian tea into selenium-enriched guapian tea through a conventional luan gupina tea preparing process, wherein the concentration of the selenium is 0.25mg/kg-4.0mg/kg; and the organic selenium liquor is aqueous liquor diluted by protein selenium, yeast selenium or selenium methionine. The production method disclosed by the invention uses the organic selenium liquor which is low in toxicity and quick to absorb, is simple and convenient to use, convenient for large-area popularization and capable of effectively controlling the tea leaf surface to be free of organic selenium residue, so that a purpose of producing clean, safe, stable and effective selenium-enriched guapian tea is achieved; and health of a tea farmer is also effectively guaranteed.

Description

technical field [0001] The invention relates to a method for increasing the content of trace elements in crop products, in particular to a method for increasing the content of organic selenium in melon slices. Background technique [0002] Selenium is an indispensable trace element in the life activities of humans and animals. Selenium deficiency in the human body can cause many diseases, and selenium supplementation can help reduce the occurrence of various cardiovascular and cerebrovascular diseases, improve patient symptoms, and enhance the body's anti-cancer and anti-cancer ability. Chinese scientists have measured the selenium content of soil samples from 1094 counties and cities (accounting for about half of the country), and the results show that China is a selenium-deficient country. Only 1 / 3 of counties have reached the normal critical value of 0.1 mg / kg announced by the international community, that is, 2 / 3 of my country's areas are selenium-deficient areas. Amon...

AI Technical Summary

Problems solved by technology

However, there are very few selenium-rich areas that can produce tea, and most of the tea areas are selenium-deficient areas, so the production of selenium-enriched tea is limited, which is far from meeting market demand

Moreover, due to the influence of climate, environment and cultivation methods, its selenium content is extremely unstable and varies greatly.

[0003] Selenium-enriched tea is produced by applying selenium-containing fertilizers to the soil. The selenium content in the tea produced by this method cannot reach the specified index value, and it is easy to cause environmental pollution.

Spraying the aqueous solution of sodium selenite on the tea buds will easily cause inorganic selenium residues on the surface of the tea leaves. Inorganic selenium is a toxic substance and has a low absorption and utilization rate.