CN102352253A

CN102352253A - Soil amendment and method for reducing fluorine content of fresh brick tea leaves

Info

Publication number: CN102352253A
Application number: CN2011102116691A
Authority: CN
Inventors: 阮建云; 伊晓云; 马立锋; 乔沙
Original assignee: Tea Research Institute Chinese Academy of Agricultural Sciences
Current assignee: Tea Research Institute Chinese Academy of Agricultural Sciences
Priority date: 2011-07-27
Filing date: 2011-07-27
Publication date: 2012-02-15
Anticipated expiration: 2031-07-27
Also published as: CN102352253B

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 a method 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 of an 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

Reduce the soil improvement agent and the method for fluorine content in the bright leaf of brick tea

Technical field

The invention belongs to the tea place fresh leaf and fall the fluorine technical field, be specifically related to reduce the soil improvement agent and the method for fluorine content in the bright leaf of brick tea.

Background technology

Fluorine is distributed widely in occurring in nature; Be one of trace element of needed by human, human body grow with bone metabolism in play an important role, take in fluorine in right amount and intend healthy; Yet the excessive absorption of fluorine can cause fluorosis, mainly shows as dental fluorosis and skeletal fluorosis.Tea tree is a kind of fluorine plant that typically gathers, and the fluorine content in the tealeaves is than the high 1-2 one magnitude of general plant, and the fluorine content with brick tea in each teas is the highest.The method that reduces fluoride content of brick tea at present mainly is in the Tea Processing process, to carry out, and through the method for fluorine content in the planting link reduction brick tea fresh leaf clear and definite report is not arranged as yet.

Fluorine in the tealeaves is mainly derived from the fluorine in soil and the atmosphere, and wherein soil is the main source that tea tree absorbs fluorine.Soil fluorine content remarkably influenced tea leaf fluorine concentration, research shows that soil water-soluble fluorine and salt dissolubility fluorine can reflect the biological effectiveness of soil fluorine preferably, tea leaf increases the absorption of the fluorine increase with soil water-soluble fluorine content.Parent soil material, pH, organic matter, exchangeable calcium, amorphous aluminium etc. all influence soil fluorine content and occurrence patterns thereof, and The experimental results shows that soil pH and organic content are the MAIN SOILS factors that influences the soil water-soluble fluorine.Therefore, through improving soil pH and organic content reducing the effective fluorine content of soil, thereby reduce the fluorine content in the fresh tea leaf, become the brick tea fresh leaf and fall one of possible measure of fluorine.

Summary of the invention

To the problem that prior art exists, the objective of the invention is to design provides a kind of and can effectively reduce fresh tea leaf raw material fluorine content, ensures brick tea quality safety, the soil improvement agent of taking into account soil Sustainable Production ability and the technical scheme of method.

The soil improvement agent of fluorine content in the bright leaf of described reduction brick tea is characterized in that being made up of the raw material of following weight parts: 4～12 parts in 158～476 parts of ground dolomites, 15～55 parts of unslaked limes, 50～150 parts of the peats composed of rotten mosses and Repone K.

The soil improvement agent of fluorine content in the bright leaf of described reduction brick tea is characterized in that being made up of the raw material of following weight parts: 6～10 parts in 221～413 parts of ground dolomites, 22～48 parts of unslaked limes, 70～130 parts of the peats composed of rotten mosses and Repone K.

The soil improvement agent of fluorine content in the bright leaf of described reduction brick tea is characterized in that being made up of the raw material of following weight parts: 7～9 parts in 285～349 parts of ground dolomites, 29～41 parts of unslaked limes, 90～110 parts of the peats composed of rotten mosses and Repone K.

The soil improvement agent of fluorine content is characterized in that described ground dolomite fineness requirement was 200 mesh sieves in the bright leaf of described reduction brick tea.

The soil improvement agent of fluorine content is characterized in that described unslaked lime fineness requirement was 100 mesh sieves in the bright leaf of described reduction brick tea.

Described soil improvement agent reduces the method for fluorine content in the bright leaf of brick tea, it is characterized in that may further comprise the steps:

1) prepares burden by described weight part and mix;

2) amount of application is 227～693kg/ mu, and can pluck at brick tea and use once in previous month every year, is applied in the tea garden soil surface, spreads fertilizer over the fields the back soil is carried out shallow turning over.

The described peat composed of rotten mosses calculates with dry weight.

The soil improvement agent and the method for fluorine content in the bright leaf of above-mentioned reduction brick tea, having proposed to reduce the bright leaf fluorine of brick tea content is main purpose, rationally uses the technology of ground dolomite, unslaked lime, the peat composed of rotten mosses and Repone K.Ground dolomite in the soil improvement agent, unslaked lime can significantly improve acid soil pH, change soil fluorine occurrence patterns; The peat composed of rotten mosses in the soil improvement agent is a meadow peat, is that the plant that is half rotten state is piled up the organic ore body that forms year by year, is rich in humic substance, has stronger adsorptivity and ventilation property; Repone K in the soil improvement agent, cl ions that it contains and fluorine are the negative univalent anion of congeners, influence the absorption to fluorion of validity and the tea tree of fluorine in the soil.

The present invention unless otherwise indicated, described umber is the weight part of active principle.

Embodiment

Further specify the present invention below in conjunction with embodiment.

Embodiment 1

2010, on the production tea place, make an experiment, be contrast not use the soil improvement agent that reduces fluorine content in the bright leaf of brick tea; Plucked previous month at brick tea, use soil improvement agent one time, amount of application is a 460kg/ mu; Be applied in the tea garden soil surface; Spread fertilizer over the fields and then soil is carried out shallow turning over, soil improvement agent contained the ground dolomite 317kg of 200 mesh sieves, unslaked lime 35kg, the peat composed of rotten mosses (dry weight) 100kg and the Repone K 8kg of mistake 100 mesh sieves, plucked the brick tea fresh leaf after 30 days; Statistics output is collected brick tea fresh leaf, oven dry pulverizing back mensuration fluorine content simultaneously.The result show use the fluorine soil improvement agent falls and after, brick tea fresh leaf output increases to some extent, the 536mg/kg of brick tea fresh leaf fluorine content when not using fluorine reducing agent reduces to 409mg/kg, fluoro droping effect reaches 27.5%.Pluck two leaves and a bud, a bud four leaves and climax leaves sample the same period in the tea place, oven dry is measured its fluorine content after pulverizing.The result shows and uses the fluorine reducing agent soil improvement agent, and the fluorine content of two leaves and a bud, a bud four leaves and climax leaves all decreases, and wherein: the fluoro droping effect to a bud four leaves is the highest, reduces to 160mg/kg by 203mg/kg, and fluoro droping effect reaches 27.9%; Next is a two leaves and a bud, reduces to 85mg/kg by 118mg/kg, and fluoro droping effect reaches 23.8%; Use and fall the fluorine soil improvement agent and mature leaf is also had fall the fluorine effect preferably, climax leaves fluorine content 1889 is reduced to 1369mg/kg by what do not use fluorine reducing agent, and fluoro droping effect reaches 21.3%.

Table: field condition decline fluorine soil improvement agent compares the action effect of tea yield and blade fluorine content

Embodiment 2

On the production tea place, making an experiment, is contrast not use the soil improvement agent that reduces fluorine content in the bright leaf of brick tea, plucks previous month at brick tea; Use soil improvement agent one time; Amount of application is a 227kg/ mu, is applied in the tea garden soil surface, spreads fertilizer over the fields the back soil is carried out shallow turning over; Soil improvement agent contained the ground dolomite 158kg of 200 mesh sieves, unslaked lime 15kg, the peat composed of rotten mosses (dry weight) 50kg and the Repone K 4kg of mistake 100 mesh sieves; Harvesting brick tea fresh leaf after 30 days, statistics output is collected brick tea fresh leaf, oven dry pulverizing back mensuration fluorine content simultaneously.It also can reach the technique effect similar with embodiment 1.

Embodiment 3

On the production tea place, making an experiment, is contrast not use the soil improvement agent that reduces fluorine content in the bright leaf of brick tea, plucks previous month at brick tea; Use soil improvement agent one time; Amount of application is a 693kg/ mu, is applied in the tea garden soil surface, spreads fertilizer over the fields the back soil is carried out shallow turning over; Soil improvement agent contained the ground dolomite 476kg of 200 mesh sieves, unslaked lime 55kg, the peat composed of rotten mosses (dry weight) 150kg and the Repone K 12kg of mistake 100 mesh sieves; Harvesting brick tea fresh leaf after 30 days, statistics output is collected brick tea fresh leaf, oven dry pulverizing back mensuration fluorine content simultaneously.It also can reach the technique effect similar with embodiment 1.

Claims

1. reduce the soil improvement agent of fluorine content in the bright leaf of brick tea, it is characterized in that constituting: 4～12 parts in 158～476 parts of ground dolomites, 15～55 parts of unslaked limes, 50～150 parts of the peats composed of rotten mosses and Repone K by the raw material of following weight parts.

2. the soil improvement agent of fluorine content in the bright leaf of reduction brick tea as claimed in claim 1 is characterized in that being made up of the raw material of following weight parts: 6～10 parts in 221～413 parts of ground dolomites, 22～48 parts of unslaked limes, 70～130 parts of the peats composed of rotten mosses and Repone K.

3. the soil improvement agent of fluorine content in the bright leaf of reduction brick tea as claimed in claim 1 is characterized in that being made up of the raw material of following weight parts: 7～9 parts in 285～349 parts of ground dolomites, 29～41 parts of unslaked limes, 90～110 parts of the peats composed of rotten mosses and Repone K.

4. the soil improvement agent of fluorine content is characterized in that described ground dolomite fineness requirement was 200 mesh sieves in the bright leaf of reduction brick tea as claimed in claim 1.

5. the soil improvement agent of fluorine content is characterized in that described unslaked lime fineness requirement was 100 mesh sieves in the bright leaf of reduction brick tea as claimed in claim 1.

6. utilize claim 1 or 2 or 3 described soil improvement agents to reduce the method for fluorine content in the bright leaf of brick tea, it is characterized in that may further comprise the steps:

1) prepares burden by described weight part and mix;