CN105777214A - Soil improvement agent of reducing rare earth content in tea leaves and effect determination method - Google Patents
Soil improvement agent of reducing rare earth content in tea leaves and effect determination method Download PDFInfo
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- CN105777214A CN105777214A CN201610246581.6A CN201610246581A CN105777214A CN 105777214 A CN105777214 A CN 105777214A CN 201610246581 A CN201610246581 A CN 201610246581A CN 105777214 A CN105777214 A CN 105777214A
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 57
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 50
- 239000002689 soil Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000000694 effects Effects 0.000 title claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 title abstract description 10
- 230000006872 improvement Effects 0.000 title abstract description 9
- 241001122767 Theaceae Species 0.000 title 1
- 244000269722 Thea sinensis Species 0.000 claims abstract description 28
- 241000196324 Embryophyta Species 0.000 claims abstract description 20
- 238000002203 pretreatment Methods 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 239000003516 soil conditioner Substances 0.000 claims description 21
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 235000019504 cigarettes Nutrition 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 6
- 239000003153 chemical reaction reagent Substances 0.000 claims description 6
- 238000005352 clarification Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 6
- 239000012498 ultrapure water Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000003556 assay Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 244000025254 Cannabis sativa Species 0.000 claims description 3
- 150000001722 carbon compounds Chemical class 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 230000029087 digestion Effects 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 235000013305 food Nutrition 0.000 claims description 3
- 229950000845 politef Drugs 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000003337 fertilizer Substances 0.000 abstract description 5
- 235000009024 Ceanothus sanguineus Nutrition 0.000 abstract 1
- 240000003553 Leptospermum scoparium Species 0.000 abstract 1
- 235000015459 Lycium barbarum Nutrition 0.000 abstract 1
- 235000013616 tea Nutrition 0.000 description 21
- 235000006468 Thea sinensis Nutrition 0.000 description 11
- 238000002474 experimental method Methods 0.000 description 7
- 235000020333 oolong tea Nutrition 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052747 lanthanoid Inorganic materials 0.000 description 2
- 150000002602 lanthanoids Chemical class 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 101100002917 Caenorhabditis elegans ash-2 gene Proteins 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000005593 Camellia sinensis f parvifolia Nutrition 0.000 description 1
- 244000041840 Camellia sinensis f. parvifolia Species 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/245—Earth materials for agricultural purposes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Pathology (AREA)
- Inorganic Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Materials Engineering (AREA)
- Soil Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention relates to the field of soil improvement agents, in particular to a soil improvement agent of reducing the rare earth content in tea leaves and an effect determination method. The invention discloses the soil improvement agent of reducing the rare earth content in tea leaves, and the soil improvement agent is plant ash. The invention further discloses the effect determination method of the soil improvement agent of reducing the rare earth content in tea leaves. The effect determination method comprises the steps of S1, collection of soil samples, S2, collection of tea leaf samples, S3, pre-treatment of the tea leaf samples, S4, pre-treatment of the soil samples, and S5, soil sample effective-state rare earth detection pre-treatment. The soil improvement agent is simple in formula, and therefore is low in production cost. The effect determination method is more accurate. Bio-availability of rare earth in tea plantation soil can be effectively reduced, tea trees can absorb less rare earth elements in the soil, hygienic quality standards of tea leaves can be raised, and additionally, the soil improvement agent has a certain yield-increasing effect as a fertilizer.
Description
Technical field
The present invention relates to soil conditioner field, be specially a kind of soil conditioner reducing Folium Camelliae sinensis Rare-Earth Content and effect measuring method.
Background technology
Rare earth is 15 elements belonging to group of the lanthanides in the periodic table of elements, and the general name of the scandium similar to lanthanide series chemical property, yttrium two elements totally 17 elements.Owing to rare earth is unique, it has a wide range of applications in many fields such as metallurgy, new material, catalysis and medical treatment, and rare earth application is also that one of them wants aspect again.Rare earth application in Tea Production starts from the eighties in 20th century, is once widely used in Tea Production.Owing to rare earth has significant effect in Tea Production, show: promote that camellia oleosa seed is taken root, germinateed；Promote that cutting is done sth. in advance root of hair and improves survival rate；Spring tea can be made to sprout in advance, increase bud density, improve tea yield and quality etc..Therefore, rare earth be once processed into " rare earth fertilizer ", " Yield-increasing Hormone " etc. by long-term, be used heavily in Tea Production, and accumulate in tea place, after being absorbed by Camellia sinensis, causing that Folium Camelliae sinensis rare earth exceeds standard, the Folium Camelliae sinensis that long-term drink rare earth exceeds standard then is likely to health is caused have a strong impact on.
On May 17th, 2015, consumers' association of Beijing staff is 59 Tea Samples in market stochastic buying respectively, and result shows, has 18 sample quality indexs not meet national standard requirement in 59 test samples, disqualification rate reaches 30%., wherein in 9 defective oolong tea samples, 8 defective because rare earth exceeds standard.Although the rare earth event of exceeding standard has been responded by relevant enterprise, but part expert points out that rare earth Sources controlling problem can not be ignored.In actual production process, it is possible to by regulating soil pH value size, changing rare earth element and effectively read content, reducing plant is important reparation means to the absorption of rare earth.
Current soil conditioner, and effectively reduce the rare earth element content in Folium Camelliae sinensis, and existing soil conditioner does not generally have effect of increasing production, and existing soil improvement agent prescription is complicated, relatively costly.
Summary of the invention
It is an object of the invention to provide a kind of soil conditioner reducing Folium Camelliae sinensis Rare-Earth Content and effect measuring method, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme: a kind of soil conditioner reducing Folium Camelliae sinensis Rare-Earth Content, and this soil conditioner is plant ash.
A kind of soil conditioner effect measuring method reducing Folium Camelliae sinensis Rare-Earth Content, comprises the following steps:
S1: collected specimens soil, gathers soil in sampling tea place, through air-dry, removes the foreign material such as grass roots, stone, crosses 20 mesh sieves standby；
S2: gather Tea Samples, pluck respectively lower Folium Camelliae sinensis new slightly, climax leaves, stem, main root, radicula, respectively rinse 3 times with tap water, distilled water and deionized water successively, after drying at 83 DEG C, grind, cross 100 mesh sieves, standby；
S3: Tea Samples pretreatment, processes by the assay method of GB5009.94-2012 national food safety standard rare earth elements in plant；
S4: pedotheque pretreatment, accurately weigh the soil sample 0.5g prepared in 50mL politef crucible, add 10mL hydrochloric acid, low-temperature heat on the electric hot plate in ventilating kitchen after moistening with ultra-pure water, make sample preliminary exposition, to be evaporated to when about remaining 3mL, take off slightly cold, be subsequently adding 5mL nitric acid, 5mL Fluohydric acid., 3mL perchloric acid, in the upper temperature heating of electric hot plate after adding a cover；About 1h, then uncaps, and continues to add evanescence of heat silicon；When heating is to when emitting the white cigarette of dense perchloric acid, adds a cover, make black organic carbon compound decompose；After the black Organic substance on sidewall of crucible disappears, uncap, drive white cigarette and to be evaporated to content be thick；Soil digested solusion should be white or faint yellow, it does not have obvious sediment thing exists, and can add 3mL nitric acid, 3mL Fluohydric acid., lmL perchloric acid again, repeat above digestion process；When white cigarette emits to the greatest extent again, when content be thick, take off slightly cold, with ultrapure water inwall and crucible cover, and add lmL (1:1) salpeter solution, warm dissolved residue；Then full dose is transferred in 50mL volumetric flask, cools down constant volume, shakes up, take supernatant centrifugal clarification in 2000r/min centrifuge, for measuring, takes acid same amount of with sample, does reagent blank test by same operational approach；
S5: pedotheque available state rare earth detection pre-treatment, accurately weigh the soil sample 10g of preparation in 250mL triangular flask, add 0.1mol/L hydrochloric acid 50mL, under 25 DEG C of conditions, with 210r/min on earthquake device, vibrate 120 minutes, stand, take supernatant centrifugal clarification in 1000r/min centrifuge, for measuring, take acid same amount of with sample, do reagent blank test by same operational approach.
Compared with prior art, the invention has the beneficial effects as follows: inventive formulation is simple, therefore production cost is low, the assay method of the present invention is more accurate, the present invention can be effectively reduced the biological effectiveness of tea garden soil middle rare earth, reduce the Camellia sinensis absorption to Rare Earthelements In The Soils, improve the sanitary quality standard of Folium Camelliae sinensis, and as fertilizer, there is certain effect of increasing production.
Accompanying drawing explanation
Fig. 1 pot experiment uses the impact on Camellia sinensis each position content of rare earth of the plant ash soil conditioner；
Fig. 2 field experiment uses the impact on Camellia sinensis each position content of rare earth of the plant ash soil conditioner；
Fig. 3 is that field uses the impact on Camellia sinensis tea yield of the plant ash soil conditioner.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Referring to Fig. 1-3, the present invention provides a kind of technical scheme: a kind of soil conditioner reducing Folium Camelliae sinensis Rare-Earth Content, this soil conditioner is plant ash.
A kind of soil conditioner effect measuring method reducing Folium Camelliae sinensis Rare-Earth Content, comprises the following steps:
S1: collected specimens soil, gathers soil in sampling tea place, through air-dry, removes the foreign material such as grass roots, stone, crosses 20 mesh sieves standby；
S2: gather Tea Samples, pluck respectively lower Folium Camelliae sinensis new slightly, climax leaves, stem, main root, radicula, respectively rinse 3 times with tap water, distilled water and deionized water successively, after drying at 83 DEG C, grind, cross 100 mesh sieves, standby；
S3: Tea Samples pretreatment, processes by the assay method of GB5009.94-2012 national food safety standard rare earth elements in plant；
S4: pedotheque pretreatment, accurately weigh the soil sample 0.5g prepared in 50mL politef crucible, add 10mL hydrochloric acid, low-temperature heat on the electric hot plate in ventilating kitchen after moistening with ultra-pure water, make sample preliminary exposition, to be evaporated to when about remaining 3mL, take off slightly cold, be subsequently adding 5mL nitric acid, 5mL Fluohydric acid., 3mL perchloric acid, in the upper temperature heating of electric hot plate after adding a cover；About 1h, then uncaps, and continues to add evanescence of heat silicon；When heating is to when emitting the white cigarette of dense perchloric acid, adds a cover, make black organic carbon compound decompose；After the black Organic substance on sidewall of crucible disappears, uncap, drive white cigarette and to be evaporated to content be thick；Soil digested solusion should be white or faint yellow, it does not have obvious sediment thing exists, and can add 3mL nitric acid, 3mL Fluohydric acid., lmL perchloric acid again, repeat above digestion process；When white cigarette emits to the greatest extent again, when content be thick, take off slightly cold, with ultrapure water inwall and crucible cover, and add lmL (1:1) salpeter solution, warm dissolved residue；Then full dose is transferred in 50mL volumetric flask, cools down constant volume, shakes up, take supernatant centrifugal clarification in 2000r/min centrifuge, for measuring, takes acid same amount of with sample, does reagent blank test by same operational approach；
S5: pedotheque available state rare earth detection pre-treatment, accurately weigh the soil sample 10g of preparation in 250mL triangular flask, add 0.1mol/L hydrochloric acid 50mL, under 25 DEG C of conditions, with 210r/min on earthquake device, vibrate 120 minutes, stand, take supernatant centrifugal clarification in 1000r/min centrifuge, for measuring, take acid same amount of with sample, do reagent blank test by same operational approach.
Experimental analysis
1 pot experiment, Gan De town, Anxi tea garden soil choosing fujian oolong tea main producing region carries out pot experiment, and soil Rare-Earth Content is 247.0mg/kg, pH is 3.72.The total amount of using of the soil conditioner plant ash reducing Folium Camelliae sinensis Rare-Earth Content is 0,1 and 2g/kg (be equivalent to use 0,2400 and 4800kg/hm2), in the applying of Camellia sinensis root after first mixing the wet soil of 2-3 times before using or squirting with a little moisture.Annual Anxi Tieguanyin Tea tea shoot 6 strain of every basin kind, grew through 2 years, measured the content of rare earth in Camellia sinensis body.Result shows, after using soil conditioner, P in soil H increases, and available state content of rare earth declines, Folium Camelliae sinensis each position content of rare earth all has obvious reduction, wherein using the process of 2g/kg, soil available content of rare earth reduces 35.8%, and the content of young sprout middle rare earth reduces 22.7%, the content of climax leaves middle rare earth reduces by 20.9%, the content of stem middle rare earth reduces by 15.4%, and the content of main root and radicula rare earth have dropped 23.2% and 19.4% respectively, and experimental result is as shown in Figure 1.
2. field experiment, the Gan De town, Anxi choosing fujian oolong tea main producing region carries out field experiment without the tea place that Sprayed Rare Earth is fertile, soil Rare-Earth Content is 242.0mg/kg, pH value is 3.78,3 process (plant ash 1, plant ash 2, comparison) are set, each process sets 3 repetitions, each process 3 row, each row 10 meters.Random district component cloth is taked in test.Plant ash is concentrated and is used, and adopts row replacement, the degree of depth 8～10 centimetres, executes rear earthing.Use again after first mixing the wet soil of 2-3 times before using or squirting with a little moisture, it is prevented that ash flies upward.Execute every year 1 time, after using, often to measure the situation of change of soil pH value, when pH value rises to after 4.5, should stop using.Through the growth of 3 years, measure the content of rare earth in Camellia sinensis body.It is shown that after using and dropping rare earth modifying agent, along with the pH value of soil raises and the reduction of rare earth bio-available Zn concentration, Camellia sinensis each position content of rare earth all has obvious reduction, and experimental result is as shown in Figure 2.
3. the soil conditioner plant ash impact on tea yield, through the growth of 3 years, the annual yield of determination experiment district Folium Camelliae sinensis, due to plant ash mainly containing quick-acting raw potash fertilizer (5%-15%), possibly together with available nutrients such as phosphorus, calcium, ferrum, magnesium, sulfur, potassium can promote synthesis and the transport of nitrogen metabolism and saccharide in plant, plant strain growth can be promoted healthy and strong, strengthen the ability of Resistant and natural disaster, additionally there is the effect improving drought resistance, be a kind of extraordinary physiological alkaline fertilizer.From Fig. 3 it can also be seen that after using plant ash, tea yield increases substantially.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, being appreciated that and these embodiments can be carried out multiple change, amendment, replacement and modification without departing from the principles and spirit of the present invention, the scope of the present invention be defined by the appended.
Claims (2)
1. the soil conditioner reducing Folium Camelliae sinensis Rare-Earth Content, it is characterised in that: this soil conditioner is plant ash.
2. the soil conditioner effect measuring method of a reduction Folium Camelliae sinensis Rare-Earth Content according to claim 1, it is characterised in that comprise the following steps:
S1: collected specimens soil, gathers soil in sampling tea place, through air-dry, removes the foreign material such as grass roots, stone, crosses 20 mesh sieves standby；
S2: gather Tea Samples, pluck respectively lower Folium Camelliae sinensis new slightly, climax leaves, stem, main root, radicula, respectively rinse 3 times with tap water, distilled water and deionized water successively, after drying at 83 DEG C, grind, cross 100 mesh sieves, standby；
S3: Tea Samples pretreatment, processes by the assay method of GB5009.94-2012 national food safety standard rare earth elements in plant；
S4: pedotheque pretreatment, accurately weigh the soil sample 0.5g prepared in 50mL politef crucible, add 10mL hydrochloric acid, low-temperature heat on the electric hot plate in ventilating kitchen after moistening with ultra-pure water, make sample preliminary exposition, to be evaporated to when about remaining 3mL, take off slightly cold, be subsequently adding 5mL nitric acid, 5mL Fluohydric acid., 3mL perchloric acid, in the upper temperature heating of electric hot plate after adding a cover；About 1h, then uncaps, and continues to add evanescence of heat silicon；When heating is to when emitting the white cigarette of dense perchloric acid, adds a cover, make black organic carbon compound decompose；After the black Organic substance on sidewall of crucible disappears, uncap, drive white cigarette and to be evaporated to content be thick；Soil digested solusion should be white or faint yellow, it does not have obvious sediment thing exists, and can add 3mL nitric acid, 3mL Fluohydric acid., 1mL perchloric acid again, repeat above digestion process；When white cigarette emits to the greatest extent again, when content be thick, take off slightly cold, with ultrapure water inwall and crucible cover, and add 1mL (1:1) salpeter solution, warm dissolved residue；Then full dose is transferred in 50mL volumetric flask, cools down constant volume, shakes up, take supernatant centrifugal clarification in 2000r/min centrifuge, for measuring, takes acid same amount of with sample, does reagent blank test by same operational approach；
S5: pedotheque available state rare earth detection pre-treatment, accurately weigh the soil sample 10g of preparation in 250mL triangular flask, add 0.1mol/L hydrochloric acid 50mL, under 25 DEG C of conditions, with 210r/min on earthquake device, vibrate 120 minutes, stand, take supernatant centrifugal clarification in 1000r/min centrifuge, for measuring, take acid same amount of with sample, do reagent blank test by same operational approach.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103931402A (en) * | 2014-04-30 | 2014-07-23 | 福州市华茗茶业研究所 | Method for lowering content of rare earth elements in new tips of tea trees |
| CN104263379A (en) * | 2014-09-23 | 2015-01-07 | 凌少青 | Acidic soil improving agent and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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