CN103202188A - Method for regulating and controlling fluorine content in fresh tea leaves - Google Patents
Method for regulating and controlling fluorine content in fresh tea leaves Download PDFInfo
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- CN103202188A CN103202188A CN2013101430888A CN201310143088A CN103202188A CN 103202188 A CN103202188 A CN 103202188A CN 2013101430888 A CN2013101430888 A CN 2013101430888A CN 201310143088 A CN201310143088 A CN 201310143088A CN 103202188 A CN103202188 A CN 103202188A
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Abstract
The invention belongs to the technical field of the fluoride reduction in fresh tea leaves, and particularly relates to a method for regulating and controlling the fluorine content in fresh tea leaves based on a mode of spraying nitrogen nutrient solution on tea leaf surfaces. The method is characterized in that the nitrogen nutrient solution which is taken as a spraying agent of the tea leaf surfaces at the growth stage of young tea tree sprouts is sprayed on the tea leaf surfaces. According to the method, the improvement of the nitrogen nutrient metabolism of the young tea tree sprouts is taken as an entry point; the growth stages of the fourth, the fifth and the sixth leaves of the young tree tea sprouts are shortened; the tenderness of the young tea tree sprouts is increased, so as to play the roles of hindering and reducing the gathering of fluorine towards the tea leaf surfaces; the young tea tree sprouts and the leaf surface nutrient are regulated and controlled by spraying the nitrogen nutrient solution on the leaf surfaces; the fluorine content in the young tea tree sprouts can be diluted in a biological manner by taking pure agronomic measures; the method has the characteristics of being low in fluoride cost, easy to operate, and fast and stable in control effect; and the actual fluoride content in the fresh tea leaves can be obviously reduced.
Description
Technical field
The invention belongs to fresh leaves of tea plant and fall the fluorine technical field, be specifically related to a kind of method of regulating and control fluorine content in the bright leaf of tea based on the mode that sprays tea tree blade face nitrogen nutrition liquid.
Background technology
Fluorine is as a kind of trace element of needed by human, human body grow and skeletal metabolism in play an important role, an amount of fluorine is taken in the human body beneficial, however excessive fluorine but produces harm to human body, the fluorine dental plaque occurs, fluoridizes bone disease etc.Tea tree has stronger enrichment to fluorine, and wherein 98.1% fluorine is accumulated in the blade, and along with the blade maturity increases and raises.Of common occurrence because of the type of the drinking tea fluorine poisoning phenomenon that long-term drinking causes, caused great attention, therefore the fluorine measure effectively falls in research, has very important meaning.
Fluorine content generally is by physics or chemical method in the reduction tealeaves at present, be achieved, major technique measure and existing problems have: 1. the fluorine tea tree breed is hanged down in seed selection, this mode is comparatively common, because Different Tea Varieties is to the significant difference of being enriched with of fluorine element, therefore cultivating the poly-low tea tree breed of fluorine ability is an approach that reduces fluorine content in the tealeaves, but, it is bigger that the mode that relies on artificial culture is cultivated low fluorine tea tree breed difficulty, and each tea place changes that kind to displant cost higher, implements to promote comparatively difficulty; 2. improve planting environment and technical measures and reduce fluorine content, as apply for that the people is that Tea Inst., Chinese Academy of Agricultural Sciences is " reducing soil conditioner and the method for fluorine content in the bright leaf of brick tea " (application number: 201110211669.1) etc. in the patent name of application on July 27th, 2011, it is by selecting suitable on the spot tea place, regulation and control tea garden soil pH value etc., effectively reduced fluorine content in the tealeaves, but length consuming time is regulated and control in above-mentioned measure, it is slower to take effect, the production cost height is in the fertilising process even introduce other harmful substances easily; 3. the fluorine-containing production fertilizer of strict control enters the tea place, mainly is fluoro-containing apatite [3Ca (PO4) 2CaF2] as the raw material of phosphate fertilizer plant, and fluorinated volume can reach 4%, so should strict control phosphate fertilizer using in the tea place; 4. the development of various defluorinating agents, in tea garden soil, add defluorinating agent, in process, add defluorinating agent and drink the middle defluorinating agent that adds, falling the fluorine amount can reach more than the 10-30%, (application number: application for a patent for invention 200910058300.4) discloses the mode of electrode method defluorination and carries out the method for operating that tealeaves is made for Yibin City foreign trade gold leaf Tea Industry Co., Ltd is called " electrode method brick-tea fluorine removing method " in the name of on February 7th, 2009 application such as the applicant, yet, because the manufacturing process to tealeaves artificially adds other chemistry or mechanical process, thereby often caused the soup look of tealeaves finished product and the reduction of mouthfeel, the one-tenth tea quality of final tealeaves exerts an influence.How to develop a kind of easy to use and effect reduces the method for fluorinated volume in the tealeaves significantly, thereby under the prerequisite that guarantees the tealeaves low fluorine content, can guarantee effectively that again tealeaves becomes the tea quality, be the nearly continuous problems sought of research and development during the last ten years of those skilled in the art.
Summary of the invention
The purpose of this invention is to provide a kind of method of regulating and control fluorine content in the bright leaf of tea, fluorine content in the bright leaf of reduction tea that can be remarkable and stable, its simple operation and to fall the fluorine cost low.
For achieving the above object, the present invention has adopted following technical scheme: a kind of method of regulating and control fluorine content in the bright leaf of tea is characterized in that: in the tea tree young sprout production phase, as the tea tree foliage spraying agent, carry out the tea tree foliage-spray with nitrogen nutrition liquid.
Major advantage of the present invention is: this method is point of penetration to improve tea tree young sprout nitrogen nutrition metabolism, by shortening the vegetative period of tea tree young sprout one bud four, five, six leaves, increase the tender degree of holding of tea young sprout, thereby played obstruction and reduced the effect that fluorine is assembled to tea leaf surface; Regulate and control tea tree young sprout and foliar nutrition by utilizing nitrogen nutrition liquid to carry out foliage-spray, realize fluorine content in the biological dilution tea tree young sprout with pure agronomic measures, it is low to have the fluorine of a falling cost, easy operating, the characteristics that regulating effect is fast and stable can significantly reduce the actual fluorine content in the bright leaf of tea.
Description of drawings
Fig. 1 is that 3% aqueous solution of urea of common urea preparation of 2% aqueous solution of urea, nitrogen content 46% of the common urea preparation of the amino acid foliage fertilizer stoste of clear water, the amino acid content 〉=100g/L of 50L/ mu amount of application 1% aqueous solution of urea of converting the common urea preparation of 600 times of aqueous solution of water, nitrogen content 46%, nitrogen content 46% is to the regulation and control impact effect block diagram of fluorine content in the tea young sprout blade for fertilizing amount;
Fig. 2 is that 3% aqueous solution of urea of common urea preparation of 2% aqueous solution of urea, nitrogen content 46% of the common urea preparation of the amino acid foliage fertilizer stoste of clear water, the amino acid content 〉=100g/L of 60L/ mu amount of application 1% aqueous solution of urea of converting the common urea preparation of 600 times of aqueous solution of water, nitrogen content 46%, nitrogen content 46% is to the regulation and control impact effect block diagram of fluorine content in the tea young sprout blade for fertilizing amount;
Fig. 3 is that 3% aqueous solution of urea of common urea preparation of 2% aqueous solution of urea, nitrogen content 46% of the common urea preparation of the amino acid foliage fertilizer stoste of clear water, the amino acid content 〉=100g/L of 70L/ mu amount of application 1% aqueous solution of urea of converting the common urea preparation of 600 times of aqueous solution of water, nitrogen content 46%, nitrogen content 46% is to the regulation and control impact effect block diagram of fluorine content in the tea young sprout blade for fertilizing amount.
Embodiment
A kind of method of regulating and control fluorine content in the bright leaf of tea is characterized in that: in the tea tree young sprout production phase, as the tea tree foliage spraying agent, carry out the tea tree foliage-spray with nitrogen nutrition liquid.
The present invention is point of penetration to improve tea tree young sprout nitrogen nutrition metabolism, by shortening the vegetative period of tea tree young sprout one bud four, five, six leaves, increases the tender degree of holding of tea young sprout, thereby has played obstruction and reduced the effect that fluorine is assembled to tea leaf surface; Regulate and control tea tree young sprout and foliar nutrition by utilizing nitrogen nutrition liquid to carry out foliage-spray, realize fluorine content in the biological dilution tea tree young sprout with pure agronomic measures, it is low to have the fluorine of a falling cost, easy operating, the characteristics that regulating effect is fast and stable can significantly reduce the actual fluorine content in the bright leaf of tea; The particular type of its nitrogen nutrition liquid can according to circumstances be selected for use, as the amino acid foliage fertilizer stoste of taking the circumstances into consideration to select for use amino acid content 〉=100g/L to convert 600 times of aqueous solution of water or nitrogen content be 46% the common urea aqueous solution etc., it all can effectively reduce fluorine content in the bright leaf of the tea that sprays object in the leaf process of reality; As the present invention further optimization scheme, described blade face nitrogen nutrition liquid is herein: nitrogen content is 1～3% aqueous solution of 46% common urea preparation.
Further, described tea tree young sprout vegetative stage is: when shoot growth to a bud two, the exhibition just of three leaves; Nitrogen nutrition liquid fertilizing amount is: 50～70 liters of/mu amounts of application.For the further specifically restriction of tea tree young sprout vegetative stage, be because the common of normal tea tree harvesting all is the tealeaves of a bud four, five and six leaves, if spray in advance, tea tree does not grow new blade so foliar nutrition has no way of spraying herein; In addition, tea tree must need a period of time for the Nutrient Absorption in the nutrient solution, if when waiting to spray the blade of tea tree and growing four to six leaves, also just enter the tea picking stage naturally, at this moment the liquid level that carries out nitrogen nutrition liquid again sprays the effect that also just is difficult to even does not have the bright leaf fluorine of the best tea content reduction of expection, so locate preferred above-mentioned best spray phase, to guarantee its final spray effect.
Further, because nitrogen nutrition liquid is as the spray agent, certainly will be to be attached on the blade face that sprays tealeaves all the time, can realize the timely absorption purpose for its nutrient solution of this tea tree, therefore, how limiting it specifically sprays the time, Nutrient Absorption effect with maximized realization tea tree, provide following restriction scheme herein: the time that specifically sprays of nitrogen nutrition liquid is for spraying in all day at cloudy day or fine afternoon, and require to spray in back 2 days not have rain, as in 24 hours, rain after spraying, need fill spray once, to guarantee the tack of nitrogen nutrition liquid on the tea tree blade face all the time.
For ease of the reader understanding, introduce following specific embodiment herein, and by reference to the accompanying drawings the present invention further described (error line of handling for each data along " worker " word shape extension line on each block diagram in the accompanying drawing) once:
Experimental period and object: 9～October in 2012, production tea place, No. 3 ground, Hunan Inst. of Tea high bridge tealeaves test site.
Position, tea place and soil types: position, tea place N28.28'31.47"，E113。20'57.45 ", the tea garden soil type is the red-yellow soil that the Quaternary Period, red clay, purple sandstone development formed, and the water-soluble attitude fluorine of 0～20cm soil layer content is 0.60mg/kg, and exchange state fluorine content is 0.38mg/kg; The water-soluble attitude fluorine of 20～40cm soil layer content is 0.45mg/kg, and exchange state fluorine content is 0.20mg/kg.
Tea tree breed: when the landlord plants the clone tea tree breed.
Foliage spraying agent: the amino acid foliage fertilizer stoste of clear water (hereinafter to be referred as CK), amino acid content 〉=100g/L is converted 2% aqueous solution of urea (hereinafter to be referred as 2% urea) and 3% aqueous solution of urea (hereinafter to be referred as 3% urea) of common urea preparation of 2% aqueous solution of urea (hereinafter to be referred as 1% urea), the nitrogen content 46% of the common urea preparation of 600 times of aqueous solution of water (hereinafter to be referred as 600 times in amino acid), nitrogen content 46%, in the accompanying drawing to array from left to right.
Experimentation: each foliage spraying agent specifically spray regional random arrangement, spray operation and repeat 3 times; In autumn the young sprout two leaves and a bud just postpone, in about 4 of all day at cloudy day or the fine afternoons, spray foliage spraying agent according to 50 liters, 60 liters and 70 liters of/mu amounts of spraying respectively at the object tea tree, requiring to spray in back 2 days does not have rain, as spray the back and in 24 hours, meet with to rain, fill spray once again.
After spraying processing, gather respectively when shoot growth to a bud four leaves of receiving guest with tea, a bud five leaves, a bud six leaves and respectively handle young sprout standard bud-leaf sample, measure tea tree young sprout perfluor amount.
Result of the test:
Spray the result as shown in Figure 1 for 50 liters/mu with the amount of spraying, spray above-mentioned foliage fertilizer after 12 days, fluorine content sprays to contrast with CK respectively and has descended-2.52%, 5.75%, 24.68% and 25.23% in a bud four leaf young sprouts that 600 times in amino acid, 1% urea, 2% urea and 3% urea are handled; Spray foliage fertilizer after 27 days, fluorine content sprays to contrast with CK respectively and has descended 3.45%, 10.28%, 19.89% and 22.16% in a bud five leaf young sprouts that 600 times in amino acid, 1% urea, 2% urea and 3% urea are handled; Spray foliage fertilizer after 35 days, fluorine content sprays to contrast with CK respectively and has descended 7.02%, 20.78%, 21.68% and 22.98% in a bud six leaf young sprouts that 600 times in amino acid, 1% urea, 2% urea and 3% urea are handled.
Spray the result as shown in Figure 2 for 60 liters/mu with the amount of spraying, spray above-mentioned foliage fertilizer after 12 days, fluorine content sprays to contrast with CK respectively and has descended-5.02%, 6.53%, 26.86% and 27.13% in a bud four leaf young sprouts that 600 times in amino acid, 1% urea, 2% urea and 3% urea are handled; Spray foliage fertilizer after 27 days, fluorine content sprays to contrast with CK respectively and has descended 4.54%, 13.98%, 21.89% and 22.52% in a bud five leaf young sprouts that 600 times in amino acid, 1% urea, 2% urea and 3% urea are handled; Spray foliage fertilizer after 35 days, fluorine content sprays to contrast with CK respectively and has descended 8.82%, 22.88%, 22.09% and 23.92% in a bud six leaf young sprouts that 600 times in amino acid, 1% urea, 2% urea and 3% urea are handled.
Spray the result as shown in Figure 3 for 70 liters/mu with the amount of spraying, spray above-mentioned foliage fertilizer after 12 days, fluorine content sprays to contrast with CK respectively and has descended-7.43%, 5.15%, 21.83% and 20.15% in a bud four leaf young sprouts that 600 times in amino acid, 1% urea, 2% urea and 3% urea are handled; Spray foliage fertilizer after 27 days, fluorine content sprays to contrast with CK respectively and has descended 6.84%, 11.32%, 22.78% and 21.25% in a bud five leaf young sprouts that 600 times in amino acid, 1% urea, 2% urea and 3% urea are handled; Spray foliage fertilizer after 35 days, fluorine content sprays to contrast with CK respectively and has descended 8.15%, 19.84%, 21.64% and 19.92% in a bud six leaf young sprouts that 600 times in amino acid, 1% urea, 2% urea and 3% urea are handled.
As from the foregoing, with 1%～3% urea as foliage spraying agent, and with the amount of spraying of the 50～70L/ mu regulating effect to fluorine content in the tea young sprout of different vegetative stages, all be better than with 600 times of regulating effects as foliage spraying agent of amino acid, the purpose that has played the actual fluorine content in the bright leaf of remarkable reduction tea that whole regulation process is obvious, and integral body sprays the process instant effect and fluoro droping effect is stable, and its market prospects are wide.
Claims (5)
1. a method of regulating and control fluorine content in the bright leaf of tea is characterized in that: in the tea tree young sprout production phase, as the tea tree foliage spraying agent, carry out the tea tree foliage-spray with nitrogen nutrition liquid.
2. the method for fluorine content in the bright leaf of regulation and control tea according to claim 1, it is characterized in that: described blade face nitrogen nutrition liquid is: nitrogen content is 1～3% aqueous solution of 46% common urea preparation.
3. the method for fluorine content in the bright leaf of regulation and control tea according to claim 1 and 2, it is characterized in that: described tea tree young sprout vegetative stage is: when shoot growth to a bud two, the exhibition just of three leaves.
4. the method for fluorine content in the bright leaf of regulation and control tea according to claim 3, it is characterized in that: nitrogen nutrition liquid fertilizing amount is: 50～70 liters of/mu amounts of application.
5. the method for fluorine content in the bright leaf of regulation and control tea according to claim 1, it is characterized in that: spray in all day at cloudy day or fine afternoon, requiring to spray in back 2 days does not have rain, as sprays the back and rained in 24 hours, need fill spray once.
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Cited By (5)
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| CN104447051A (en) * | 2014-12-18 | 2015-03-25 | 成都新朝阳作物科学有限公司 | Medicine for reducing content of fluorine in tea leaves and application thereof |
| CN105993889A (en) * | 2016-05-31 | 2016-10-12 | 浙江大学 | Method for inhibiting tea trees from absorbing fluorine and adopted tea tree fluorine inhibitor |
| CN109392588A (en) * | 2018-12-29 | 2019-03-01 | 洪雅县偏坡山茶叶专业合作社 | A kind of plantation technique of low fluorine tea |
| CN112470648A (en) * | 2020-11-05 | 2021-03-12 | 湖北省疾病预防控制中心（湖北省预防医学科学院） | Fertilizing method for reducing fluorine content in tea |
| CN115486310A (en) * | 2022-09-15 | 2022-12-20 | 中国农业科学院茶叶研究所 | Planting and processing method of low-fluorine dark tea |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104447051A (en) * | 2014-12-18 | 2015-03-25 | 成都新朝阳作物科学有限公司 | Medicine for reducing content of fluorine in tea leaves and application thereof |
| CN105993889A (en) * | 2016-05-31 | 2016-10-12 | 浙江大学 | Method for inhibiting tea trees from absorbing fluorine and adopted tea tree fluorine inhibitor |
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| CN109392588A (en) * | 2018-12-29 | 2019-03-01 | 洪雅县偏坡山茶叶专业合作社 | A kind of plantation technique of low fluorine tea |
| CN112470648A (en) * | 2020-11-05 | 2021-03-12 | 湖北省疾病预防控制中心（湖北省预防医学科学院） | Fertilizing method for reducing fluorine content in tea |
| CN115486310A (en) * | 2022-09-15 | 2022-12-20 | 中国农业科学院茶叶研究所 | Planting and processing method of low-fluorine dark tea |
| CN115486310B (en) * | 2022-09-15 | 2024-01-09 | 中国农业科学院茶叶研究所 | Planting and processing method of low-fluorine black tea |
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Application publication date: 20130717 |