CN102352253B

CN102352253B - Soil amendment and method for reducing fluorine content of fresh brick tea leaves

Info

Publication number: CN102352253B
Application number: CN 201110211669
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: 2013-05-15
Anticipated expiration: 2031-07-27
Also published as: CN102352253A

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 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 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, one of trace element of needed by human, human body grow and bone metabolism in play an important role, take in right amount fluorine and intend healthy, yet the excessive absorption of fluorine can cause fluorosis, and main manifestations is dental fluorosis and skeletal fluorosis.Tea tree is a kind of typical poly-fluorine plant, and the fluorine content in tealeaves is than the high 1-2 of a general plant order of magnitude, and the fluorine content with brick tea in each teas is the highest.The method that reduces at present fluoride content of brick tea is mainly to carry out in the Tea Processing process, and by the method that planting link reduces fluorine content in the brick tea fresh leaf, clear and definite report is arranged not yet.

Fluorine in tealeaves is mainly derived from the fluorine in soil and atmosphere, and wherein soil is the main source that tea tree absorbs fluorine.Soil fluoride remarkably influenced tea leaf fluorine concentration studies show that soil water-soluble fluorine and the salt dissolubility fluorine biological effectiveness of reflect soil fluorine preferably, and 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 affect soil fluoride and occurrence patterns thereof, and the experimental results shows that soil pH and organic content are the MAIN SOILS factors that affects the soil water-soluble fluorine.Therefore, by improving soil pH and organic content reducing the effective fluorine content of soil, thereby reduce the fluorine content in fresh tea leaf, become the brick tea fresh leaf and fall one of possible measure of fluorine.

Summary of the invention

For the problem that prior art exists, the object of the invention is to design provides a kind of and can effectively reduce fresh tea leaf Fluoride for Raw Material 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 of the raw material of following weight parts: 4～12 parts, 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 of the raw material of following weight parts: 6～10 parts, 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 of the raw material of following weight parts: 7～9 parts, 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.

In the bright leaf of described reduction brick tea, 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.

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

1) prepare burden and mix by described weight part;

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

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

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

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

Embodiment

Further illustrate the present invention below in conjunction with embodiment.

Embodiment 1

2010, test on the production tea place, take do not use reduce fluorine content in the bright leaf of brick tea soil improvement agent as contrast, plucked previous month at brick tea, use soil improvement agent one time, amount of application is 460kg/ mu, be applied in the tea garden soil surface, spread fertilizer over the fields and rear 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, pluck the brick tea fresh leaf after 30 days, statistics output is collected brick tea fresh leaf, the rear fluorine content of measuring of oven dry pulverizing simultaneously.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 is down to 409mg/kg, fluoro droping effect reaches 27.5%.Pluck two leaves and a bud, bud four leaves and a climax leaves sample same period in the tea place, oven dry is measured its fluorine content after pulverizing.Result shows uses the fluorine reducing agent soil improvement agent, and the fluorine content of two leaves and a bud, bud four leaves and climax leaves all decreases, and wherein: the fluoro droping effect to bud four leaves is the highest, is down to 160mg/kg by 203mg/kg, and fluoro droping effect reaches 27.9%; Next is two leaves and a bud, is down to 85mg/kg by 118mg/kg, and fluoro droping effect reaches 23.8%; Use and fall the fluorine soil improvement agent mature leaf is also had defluoridation preferably, climax leaves fluorine content 1889 is down 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

Test on the production tea place, take do not use reduce fluorine content in the bright leaf of brick tea soil improvement agent as contrast, plucked previous month at brick tea, use soil improvement agent one time, amount of application is 227kg/ mu, be applied in the tea garden soil surface, spread fertilizer over the fields and rear 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, pluck the brick tea fresh leaf after 30 days, statistics output is collected brick tea fresh leaf, the rear fluorine content of measuring of oven dry pulverizing simultaneously.It also can reach the technique effect similar to embodiment 1.

Embodiment 3

Test on the production tea place, take do not use reduce fluorine content in the bright leaf of brick tea soil improvement agent as contrast, plucked previous month at brick tea, use soil improvement agent one time, amount of application is 693kg/ mu, be applied in the tea garden soil surface, spread fertilizer over the fields and rear 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, pluck the brick tea fresh leaf after 30 days, statistics output is collected brick tea fresh leaf, the rear fluorine content of measuring of oven dry pulverizing simultaneously.It also can reach the technique effect similar to embodiment 1.

Claims

1. reduce the soil improvement agent of fluorine content in the bright leaf of brick tea, it is characterized in that being consisted of by the raw material of following weight parts: 4～12 parts, 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, described ground dolomite fineness requirement was 200 mesh sieves, and described unslaked lime fineness requirement was 100 mesh sieves.

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 of the raw material of following weight parts: 6～10 parts, 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 of the raw material of following weight parts: 7～9 parts, 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. 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 comprising the following steps:

1) prepare burden and mix by described weight part;