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Soil amendment and method for reducing fluorine content of fresh brick tea leaves

A technology of soil improver and fluorine content, applied in soil conditioning materials, chemical instruments and methods, organic fertilizers, etc.

Active Publication Date: 2012-02-15
TEA RES INST CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method of reducing the fluorine content of brick tea is mainly carried out in the process of tea processing, and there is no clear report on the method of reducing the fluorine content of raw materials of brick tea fresh leaves through planting

Method used

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  • Soil amendment and method for reducing fluorine content of fresh brick tea leaves

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Effect test

Embodiment 1

[0018] In 2010, a test was carried out on the production tea garden, using no soil improver to reduce the fluorine content in fresh brick tea leaves as a control, and one month before brick tea picking, the soil improver was applied once at a rate of 460kg / mu, and applied in the tea garden On the soil surface, lightly plow the soil after spreading. The soil conditioner contains 317kg of dolomite powder passed through a 200 mesh sieve, 35kg of quicklime passed through a 100 mesh sieve, 100kg of peat (dry weight) and 8kg of potassium chloride. Pick fresh brick tea after 30 days. Leaf raw materials were used to count the output, and fresh brick tea leaf raw materials were collected at the same time, dried and pulverized to determine the fluorine content. The results showed that after the application of defluoridation soil amendment, the yield of fresh brick tea leaf raw materials increased, and the fluorine content of fresh brick tea leaf raw materials decreased from 536mg / kg when...

Embodiment 2

[0022] The test was carried out on the production tea garden, with no application of the soil improver for reducing the fluorine content in the fresh brick tea leaves as a control, and one month before the brick tea was picked, the soil improver was applied once at a rate of 227kg / mu on the soil surface of the tea garden. After spreading the soil, the soil is lightly plowed. The soil improver contains 158kg of dolomite powder passed through a 200 mesh sieve, 15kg of quicklime passed through a 100 mesh sieve, 50kg of peat (dry weight) and 4kg of potassium chloride. After 30 days, fresh brick tea leaves are picked. The output is counted, and the fresh leaf raw materials of brick tea are collected at the same time, and the fluorine content is determined after drying and pulverizing. It can also achieve the technical effect similar to that of Embodiment 1.

Embodiment 3

[0024] The test was carried out on the production tea garden, taking no application of the soil improver for reducing the fluorine content in the fresh brick tea leaves as a control, and one month before the brick tea was picked, the soil improver was applied once at a rate of 693kg / mu on the soil surface of the tea garden. After spreading the soil, carry out shallow plowing of the soil. The soil improver contains 476kg of dolomite powder passed through a 200 mesh sieve, 55kg of quicklime passed through a 100 mesh sieve, 150kg of peat (dry weight) and 12kg of potassium chloride. After 30 days, fresh brick tea leaves are picked. The output is counted, and the fresh leaf raw materials of brick tea are collected at the same time, and the fluorine content is determined after drying and pulverizing. It can also achieve the technical effect similar to that of Embodiment 1.

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Abstract

The invention provides a soil amendment for reducing fluorine content of fresh brick tea leaves, and belongs to the technical field of fluorine reduction of fresh leaf raw materials in tea gardens. The soil amendment comprises: by weight, 158 to 476 parts of dolomite powder, 15 to 55 parts of quicklime, 50 to 150 parts of turf and 4 to 12 parts of potassium chloride. The invention also provides amethod which aims mainly at reducing fluorine content of fresh brick tea leaves, and utilizes reasonably dolomite powder, quicklime, turf and potassium chloride. Dolomite powder and quicklime in the soil amendment can improve obviously a pH value of acid soil, and change an existence form of fluorine in soil. Turf (meadow peat) in the soil amendment is an organic matter ore body formed by yearly accumulation of half-rotten plants, is rich in humic substances, and has strong adsorbability and permeability. Potassium chloride in the soil amendment contains chloride ions and monovalent anions ofan element which is congeneric with fluorine, and can influence the effectiveness of fluorine in soil and the absorption of fluoride ions by tea trees.

Description

technical field [0001] The invention belongs to the technical field of reducing fluoride in fresh leaf raw materials of tea gardens, and in particular relates to a soil improver and a method for reducing the fluorine content in fresh brick tea leaves. Background technique [0002] Fluorine is widely distributed in nature and is one of the essential trace elements for the human body. It plays an important role in human growth and bone metabolism. Adequate intake of fluorine is beneficial to health. However, excessive intake of fluorine can lead to fluorosis, mainly Manifested as dental fluorosis and skeletal fluorosis. Tea tree is a typical polyfluoride plant. The fluorine content in tea leaves is 1-2 orders of magnitude higher than that in ordinary plants. Among all kinds of tea, brick tea has the highest fluorine content. At present, the method of reducing the fluorine content of brick tea is mainly carried out in the process of tea processing, and there is no clear report...

Claims

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Application Information

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IPC IPC(8): C09K17/06C09K101/00
Inventor 阮建云伊晓云马立锋乔沙
Owner TEA RES INST CHINESE ACAD OF AGRI SCI
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