CN107129807A - A kind of Multifunctional ecotype soil conditioner - Google Patents
A kind of Multifunctional ecotype soil conditioner Download PDFInfo
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- CN107129807A CN107129807A CN201710413185.2A CN201710413185A CN107129807A CN 107129807 A CN107129807 A CN 107129807A CN 201710413185 A CN201710413185 A CN 201710413185A CN 107129807 A CN107129807 A CN 107129807A
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- 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
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- 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
- C09K2101/00—Agricultural use
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
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- Soil Conditioners And Soil-Stabilizing Materials (AREA)
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Abstract
The invention discloses a kind of Multifunctional ecotype soil conditioner, it includes the urea-formaldehyde foam containing organic matter, charcoal, humic acid, pyroligneous acid, imidazole modified tapioca and nitrogen-fixing bacteria, the Multifunctional ecotype soil conditioner is provided simultaneously with stabilizing heavy metal, retain water and nutrients, nutrition slow-release are long-acting, improve utilization rate of fertilizer, improve the multiple opsonic action such as soil texture and micro-ecological environment, be adapted to the conditioning reparation of various contaminated soils.
Description
Technical field
The present invention relates to a kind of soil conditioner, and in particular to a kind of Multifunctional ecotype soil conditioner, more particularly to
One kind possesses long-acting nutrition slow-release, improvement soil texture, improves utilization rate of fertilizer, antagonism or precipitation of heavy metals, improves soil thing
The soil conditioner of the multiple opsonic action such as rationality energy and micro-ecological environment, belonging to soil improves and Environment control technical field.
Background technology
Heavy metal pollution is one of main Types of current soil pollution, and traditional industry is such as dug up mine, smelted, fire coal holds very much
Easily cause the leakage and diffusion of heavy metal.With the development of industrial and agricultural production, harm soil has than more serious heavy metal at present
Cadmium, mercury, arsenic, lead, chromium, copper, zinc, nickel, bismuth and antimony etc..Heavy metal pollution is because having toxicity, easily by food chain in plant, animal
Accumulated with human body, ecological environment and health are constituted a serious threat.It is wide with rapid industrial development, agricultural chemicals and chemical fertilizer
General to use, farmland soil heavy metals pollution is increasingly severe.These heavy metals are in soil --- in crops System with ion or
The form of compound is present, and accumulates in soil shallow-layer, mostly in the root area of crop, can also migrate downward into sometimes to underground
In water.If exceeding certain concentration in upper soll layer enrichment, soil quality is caused to deteriorate, while can largely be inhaled by crop
Receive, then transmitted by food chain, directly or indirectly threaten human health.Research shows when heavy metal-polluted soil reaches finite concentration
When can cause long-term deleterious effects to the ecosystem, and the Soil Biochemical process participated in biology has obvious negative make
With.It can not be degraded in addition, the key issue of heavy metal pollution of soil is heavy metal in soil, once pollution is difficult to remove,
One of the problem of this makes it most serious in environmental pollution.
There are lime stone, bentonite, vermiculite, diatomite, sepiolite etc. currently used as the mineral of soil improvement regulator.These
Soil conditioner can improve soil pH, reduce heavy metal concentration, but improve soil shape, improve ASI systematic approach and ventilative
Property aspect need to be improved.Existing soil conditioner can not be provided simultaneously with improving soil nutrient, adjust soil pH, reduction weight
Metal element content, improves utilization rate of fertilizer, detoxifies with soil, builds up fertility, improving soil physics performance and Tiny ecosystem ring
The multiple conditioning functions such as border.
Chinese patent ZL200810141039 disclose a kind of soil conditioner and organic fertilizer containing soil conditioner and its
Preparation method, it uses pluck extract fine fodder to be combined with flyash and soil conditioner is made, or further supplying urine
Organic fertilizer is made in element and turf etc..Using soil conditioner or the organic fertilizer containing soil conditioner can improve edaphon growth
Condition, excites edaphon vigor, and improved soil physical behavior improves soil nutrient deliverability, promotes plant growth, increases
Strong crop anti-adversity, disease resistance, significant raising crop yield and quality, but the soil conditioner does not mention it with reduction
The effect of heavy metals in soil.Chinese patent ZL2015101804052 discloses a kind of composite soil conditioner, the soil
Conditioner its use the humic acid containing organic matter more than 45%, ferrous sulfate, polyglutamic acid, poly-aspartic-acid, earthworm powder, shellfish
The components such as shell powder, soybean cake, amino-oligosaccharide, attapulgite, microorganism composite zymocyte are combined；It can provide nutrient
Meanwhile, regulation, balanced soil pH value adjust soil microflora, lift water conservation, fertilizer conservation and the gas permeability of soil, and degraded has
Organic pollutants, dissolving phosphor and dissolving potassium, antagonism or precipitation of heavy metals, reduce the absorption of crop multi-metal, with soil removing toxic substances, improve fertilizer
Power, the multiple opsonic action such as soil physics performance and micro-ecological environment that improves, but its heavy metal reduction effect is not obvious.In
State patent CN201610753366.5 discloses a kind of soil conditioner, and it includes turfy soil, lignite, hydroxyapatite, borax
Powder, ammonium nitrate, nitrobacteria, pisolithus tinctorius Coker et Coucs and chelating agent, it is mainly used for improving the physical behavior of soil and the granule of soil
Structure；And further combined with lifting crop root microenvironment and crop in hardened and salt-soda soil growth ability, so that grand
See physical arrangement and microcosmic root system environment these two aspects is combined jointly, realize to hardened and salt affected soil improvement.The soil
Conditioner does not refer to the stabilisation ability to heavy metal in soil.
The content of the invention
The defect existed for prior art, the purpose of the present invention is to be that providing one kind is provided simultaneously with stabilizing heavy metal,
Retain water and nutrients, nutrition slow-release are long-acting, improve utilization rate of fertilizer, improve the multiple opsonic action such as soil texture and micro-ecological environment
Soil conditioner.
In order to realize above-mentioned technical purpose, the invention provides a kind of Multifunctional ecotype soil conditioner, including it is following
Content of component：0.1~3 part of urea-formaldehyde foam containing organic matter；30~70 parts of charcoal；30~70 parts of humic acid；Pyroligneous acid 5~
15 parts；Imidazole modified 40~80 parts of tapioca；1~5 part of nitrogen-fixing bacteria.
It is preferred that scheme, Multifunctional ecotype soil conditioner is made up of following content of component：Ureaformaldehyde containing organic matter
0.5~2 part of foam；40~60 parts of charcoal；40~60 parts of humic acid；8~12 parts of pyroligneous acid；Imidazole modified tapioca 50~
70 parts；3~4 parts of nitrogen-fixing bacteria.
More preferably scheme, Multifunctional ecotype soil conditioner is made up of following content of component：Urea containing organic matter
1 part of aldehyde foam；50 parts of charcoal；50 parts of humic acid；10 parts of pyroligneous acid；Imidazole modified 60 parts of tapioca；3 parts of nitrogen-fixing bacteria.
The content of organic matter is in more than 45wt% in more preferably scheme, the urea-formaldehyde foam containing organic matter.
The specific preparation method of the urea-formaldehyde foam containing organic matter of the present invention comprises the following steps：
(1) formaldehyde and urea are mixed and carries out polycondensation reaction, obtain urea-formaldehyde resin solution；
(2) sodium butylnaphthalenesulfonate is mixed with phosphoric acid, obtains foam liquid；
(3) foam liquid and the urea-formaldehyde resin solution, more than 45% organic fertilizer solution are foamed in foaming machine, obtained
To liquid foam；
(4) liquid foam is solidified, dried, obtain foam matrix；
(5) aldehyde radical in the foam matrix is removed, that is, obtains the urea-formaldehyde foam containing more than 45% organic matter.
More preferably scheme, the imidazole modified tapioca, which is prepared by the following method, to be obtained：Tapioca is in nitric acid
The effect of cerium ammonium is lower to be grafted with GMA, and it is anti-that graft product carries out amination with 2- amino-ethyls imidazoles
Should, produce.
It is preferred that scheme, the charcoal obtained by plant refuse and domestic sludge by anaerobic charing.
More preferably scheme, the dry weight ratio of the plant refuse and domestic sludge is (1~2):(1~2).
More preferably scheme, the temperature of the anaerobic charing is 400~500 DEG C.
The preparation method of the charcoal of the present invention comprises the following steps：
S1：Crush plant refuse；
S2：Plant refuse and municipal sludge are sufficiently mixed, by dry weight ratio (1~2):(1~2) is sufficiently mixed；
S3：Under anaerobic, carbonized at a temperature of 400~500 DEG C.
The preparation method of the imidazole modified tapioca of the present invention comprises the following steps：
S1：100g tapiocas after drying are taken, are added after distilled water nitrogen charging gas agitating 15min, emulsifier for mixing is added
15min, adds 50mg/L ammonium ceric nitrate and GMA (GMA), goes out after stirring 15min at 35 DEG C
Material, is precipitated with absolute ethyl alcohol, and reusable heat water and acetone rinsing filtering, 70 DEG C of forced air dryings obtain being grafted crude product.The thick production of grafting
Thing 70 DEG C of vacuum drying after 24h acetone extraction obtain pure graft product.
S2：The pure graft products of 50g are taken, 100mL water are put into, pH is to alkalescence for regulation, is filled with after nitrogen gas stirring 20min, plus
Enter rapid discharging after 10mg/L 2- amino-ethyls imidazoles reacts 20min at 35 DEG C to be filtered to neutrality with distilled water flushing, then use
After acetone rinsing, 70 DEG C of vacuum drying obtain imidazole modified tapioca.
The humic acid of the present invention is formed by organic fertilizer compost fermentation, and it has good ion-exchange capacity, to containing potassium
The mineral such as silicate, potassium feldspar have corrosion, can slowly decompose increase Potassium release amount, improve containing for soil effective K
Amount；A variety of nutrients are respectively provided with slowly-releasing regulation and control effect, promotes plant absorption, fertilizer efficiency is improved；And heavy metal formation precipitation can be chelated
Thing, reduces the absorption of crop heavy metal, and can improve agricultural product quality.
The imidazole modified tapioca of the present invention contains substantial amounts of hydroxyl and the imidazole ring of modification simultaneously, with superpower suction
The effect of aqueous and slow release fertilizer, retain water and nutrients effect is good；And with substantial amounts of hydroxyl and imidazoles functional group, can be to Pb2+、
Cu2+、Cd3+There is splendid coordination chelate effect Deng toxic heavy metal, use, can strengthen to toxic heavy metal with humic acid collocation
It is fixed, reduce crop and absorb, improve crop quality.It is hydrophilic that imidazole modified tapioca not only contains polarity electron rich hydroxyl etc.
Group, addition energy water swelling in soil, not only plays water retention, while being more beneficial for the chela to heavy metal ion in water
Suction-operated is closed, while its imidazole ring included has ionic liquid function, imidazole ring is matched somebody with somebody to heavy metal ion more than divalence
Position effect is strong, heavy metal ion that can be free effectively in fixing soil.And imidazole modified tapioca is after Adsorption of Heavy Metals
Floccule is complexed into, will not be migrated, secondary pollution, the natural plant while tapioca mainly has drawn from are not carried out to underground water
Raw material, raw material sources are wide, and can not be influenceed soil texture in natural degradation under microbial action and destroy micro- life in soil
Substance environment.
Contain pyroligneous acid in the soil conditioner of the present invention, the impure acetic acid obtained when being pine tar and the dry distillation of wood.
Pyroligneous acid, light yellow transparent liquid possesses promotion plant (vegetables, flowers and paddy rice) growth and suppresses the effect of weed growth.
The pyroligneous acid that the present invention is used can be obtained by commercially available mode, and such as mesophytization Manufacturing Co., Ltd is closed in Wuhan.
The urea-formaldehyde foam containing organic matter of the present invention, pH is 5.5~7.5, wherein rich in elements such as nitrogen phosphate and sulfur, potassium, zinc,
For balanced soil pH, increase ASI systematic approach has obvious effect, and plays slow release fertilizer, improves the mesh of soil texture
's.
The charcoal of the present invention is that a kind of carbonized by plant refuse and domestic sludge by anaerobic obtains, and it has special
Flourishing pore structure, and contain substantial amounts of heteroatom group.Its heavy metal ion has preferable adsorption capacity.
The preparation method for also providing above-mentioned soil conditioner of the present invention, this method includes as follows：Make containing organic matter
Urea-formaldehyde foam, charcoal, humic acid, pyroligneous acid, imidazole modified tapioca and nitrogen-fixing bacteria mixing granulation, obtain granular soil
Conditioner.
Compared with the prior art, the advantageous effects that technical scheme is brought are：
The various component collaboration compatibilities of soil conditioner of the present invention, with synergistic function, make it possess multi-efficiency,
It is not only able to improve the soil nutrient composition for current farmland, improving agricultural land soil improves soil physics performance and Tiny ecosystem ring
Border, and the serious adverse effect problem to crops of heavy metal pollution can be alleviated.Urea-formaldehyde foam containing organic matter rich in nitrogen, phosphorus,
The nutritional ingredients such as sulphur, potassium, zinc, humic acid is also enriched in organic matter, and enough nutrients can be provided for soil, improves soil fertility, has
Beneficial to the growth of plant.Urea-formaldehyde foam and biomass carbon have loose structure, can play a part of slow-release nutrient composition, can improve
Utilization rate of fertilizer, extends fertilizer efficiency time, contributes to improve soil texture again, increases the gas permeability of soil.Humic acid and containing organic
The phenol formaldehyde foam of matter provides good cultivation base for beneficial bacteriums such as nitrogen-fixing bacteria, is conducive to improving the microbial environment of soil.It is biological
The hydrophily of charcoal, humic acid and imidazole modified tapioca is stronger, particularly imidazole modified tapioca energy water swelling, has
Good water retention property, while three is comprising polar group or with loose structure, three is applied in combination, to the gold in soil
Category is provided simultaneously with physical absorption combination adsorption function, can realize the fixation of free heavy metal ion in soil, reduces plant
The absorption of heavy metal.In summary, there is soil conditioner of the invention soil to detoxify, build up fertility, improve soil physics
The multiple opsonic action such as performance and micro-ecological environment.
Embodiment
Following examples are intended to further illustrate present invention, rather than limit the protection model of the claims in the present invention
Enclose.
Urea-formaldehyde foam, charcoal, humic acid, imidazole modified tapioca etc. are prepared by the following method in following examples
Obtain.
The pH of urea-formaldehyde foam is 5.5~7.5, wherein rich in elements such as nitrogen phosphate and sulfur, potassium, zinc.Can be according to conventional side
Prepared by method, specific preparation method comprises the following steps：
(1) formaldehyde and urea are mixed and carries out polycondensation reaction, obtain urea-formaldehyde resin solution；
(2) sodium butylnaphthalenesulfonate is mixed with phosphoric acid, obtains foam liquid；
(3) foam liquid and the urea-formaldehyde resin solution, 45% organic fertilizer solution are foamed in foaming machine, obtains liquid
State foam；
(4) liquid foam is solidified, dried, obtain foam matrix；
(5) aldehyde radical in the foam matrix is removed, that is, obtains the urea-formaldehyde foam containing 45% organic matter.
The preparation of charcoal：Take and 2~5cm is crushed to after plant refuse natural air drying, then the city with moisture content ＜ 25%
City's domestic sludge is sufficiently mixed, and municipal sludge and plant refuse dry weight ratio are 1:1, it is heated to 450 under oxygen-free environment
DEG C carbonized, obtain carbonization product, as charcoal, its particle diameter≤5mm, with lightweight, water conservation permeability is good the characteristics of,
Provided for microorganism and favourable perch place and substantial amounts of electron transfer mediator.
The preparation of humic acid：Plant refuse is taken to be crushed to 2~5cm particle diameters, adding urea regulation material section C/N ratios is
30:1, then resulting material is dehydrated, its moisture content is down to 60% or so, aerobic composting fermentation is carried out, heap body heap is a height of
1m, heap body volume >=5m3 is aerated oxygen supply by the way of turning, carries out hot fermentation, 50 DEG C of heap temperature ＞, per 4d
Turning once, then carries out mesophilic digestion, and heap temperature is 40 DEG C, per 6d turnings once, handles, has obtained through 45d compost fermentations
The composting production become thoroughly decomposed entirely, as organic fertilizer, its moisture content ＜ 35%, seed germination index ＞ 80%, humic acid ＞ 15%, ascarid
Worm's ovum killing rate ＞ 99%, wherein rich in humic acid composition.
The preparation method of imidazole modified tapioca comprises the following steps：
S1：100g tapiocas after drying are taken, are added after distilled water nitrogen charging gas agitating 15min, emulsifier for mixing is added
15min, adds 50mg/L ammonium ceric nitrate and GMA (GMA), goes out after stirring 15min at 35 DEG C
Material, is precipitated with absolute ethyl alcohol, and reusable heat water and acetone rinsing filtering, 70 DEG C of forced air dryings obtain being grafted crude product.The thick production of grafting
Thing 70 DEG C of vacuum drying after 24h acetone extraction obtain pure graft product.
S2：The pure graft products of 50g are taken, 100mL water are put into, pH is to alkalescence for regulation, is filled with after nitrogen gas stirring 20min, plus
Enter rapid discharging after 10mg/L 2- amino-ethyls imidazoles reacts 20min at 35 DEG C to be filtered to neutrality with distilled water flushing, then use
After acetone rinsing, 70 DEG C of vacuum drying obtain imidazole modified tapioca.
The preparation of following multifunctional and composite type soil conditioner：By urea-formaldehyde foam, charcoal, humic acid, pyroligneous acid, change
Property tapioca and nitrogen-fixing bacteria, mixing granulation, obtain granular soil conditioner.
Embodiment 1
Multifunctional and composite type soil conditioning agent prescription：
Formula 1:1.5 parts of urea-formaldehyde foam containing organic matter；45 parts of charcoal；55 parts of humic acid；10 parts of pyroligneous acid；Imidazoles changes
55 parts of tapioca of property；2 parts of nitrogen-fixing bacteria.
Formula 2：1 part of urea-formaldehyde foam containing organic matter；55 parts of charcoal；42 parts of humic acid；2 parts of pyroligneous acid；It is imidazole modified
65 parts of tapioca；3 parts of nitrogen-fixing bacteria.
Formula 3：0.5 part of urea-formaldehyde foam containing organic matter；35 parts of charcoal；65 parts of humic acid；6 parts of pyroligneous acid；Imidazoles changes
70 parts of tapioca of property；2 parts of nitrogen-fixing bacteria.
Formula 4：3 parts of urea-formaldehyde foam containing organic matter；50 parts of charcoal；35 parts of humic acid；12 parts of pyroligneous acid；It is imidazole modified
44 parts of tapioca；4 parts of nitrogen-fixing bacteria.
Formula 5：1 part of urea-formaldehyde foam containing organic matter；45 parts of charcoal；45 parts of humic acid；10 parts of pyroligneous acid；It is imidazole modified
20 parts of tapioca；4 parts of nitrogen-fixing bacteria.
Formula 6：1 part of urea-formaldehyde foam containing organic matter；45 parts of charcoal；20 parts of humic acid；10 parts of pyroligneous acid；It is imidazole modified
50 parts of tapioca；4 parts of nitrogen-fixing bacteria.
Formula 7：1 part of urea-formaldehyde foam containing organic matter；25 parts of charcoal；40 parts of humic acid；10 parts of pyroligneous acid；It is imidazole modified
50 parts of tapioca；4 parts of nitrogen-fixing bacteria.
Formula 8:1.5 parts of urea-formaldehyde foam containing organic matter；55 parts of humic acid；10 parts of pyroligneous acid；Imidazole modified tapioca
55 parts；2 parts of nitrogen-fixing bacteria.
Formula 9:1.5 parts of urea-formaldehyde foam containing organic matter；45 parts of charcoal；10 parts of pyroligneous acid；Imidazole modified tapioca
55 parts；2 parts of nitrogen-fixing bacteria.
Formula 10:1.5 parts of urea-formaldehyde foam containing organic matter；45 parts of charcoal；55 parts of humic acid；10 parts of pyroligneous acid；Fixed nitrogen
2 parts of bacterium.
The soil conditioner of 1~10 gained, certain rice terrace applied to heavy metals in farmland pollution control area will be formulated respectively
Kind, multiple conditioning effect of verification experimental verification soil conditioner is carried out using following experimental method.
First, test site：Chenzhou Suxian District
Qi Fengdu towns edge of the village village rice terrace.
2nd, test method：
Certain rice terrace in the heavy metals in farmland pollution control area of village is selected, its ASI systematic approach is low, and heavy metals exceeding standard goes out
The problem of now crop yield is low-quality poor.Foundation《People's Republic of China's environmental protection professional standard soil environment monitoring skill
Art specification》(HJ/T166-2004) guidance method, draws and takes 1 mu of area, chooses 10 experimental plots, be respectively labeled as formula 1,
Formula 2, formula 3, formula 4, formula 5, formula 6, formula 7, formula 8, formula 9, formula 10.In rice planting Qian Duigai areas soil
Carry out random distributed points sampling sampling Detection, each each 10 parts of cell.Transplanting seedlings after waterflooding 15 days.To in 1~4 area's soil of formula
Add Multifunctional ecotype soil conditioner of the present invention and each ratio composition of correspondence；To the middle part of formula 5~7 packet deal
Not within the scope of the present invention, the soil conditioner of gained；1 kind of the present invention is reduced to being added in 8~10 area's soil of formula
Soil conditioner obtained by component；Normal growth, after paddy rice is ripe, analyzes the heavy metal-polluted soil amount situation of change of each cell
And rice yield.
1. pedotheque is pre-processed
Pedotheque is divulged information and natural air drying, crosses 100 mesh sieves, and 100g is taken using quartering, is stored standby；Again by remaining native mistake
120 mesh sieves, are used as this content of beary metal determination sample.
2. Soil K+adsorption
State Cu, Cd can be utilized using atomic absorption spectroscopy determination, using graphite furnace atomic absorption spectrometry
Determine in soil using state Cd, Pb；Soil acidity or alkalinity determines and uses potentiometry, soil ratio 2.5:1.0.Determined using Kelvin method
Soil total N, using 721 spectrophotometric determination soil total Ps.PH is determined to be carried out according to relevant criterion.
3. result of the test
Table 1 transplants preceding each experimental plot heavy metal, pH and nutrient detected value
As can be seen from Table 1, the pH of area's soil is 5.1 critical points for having exceeded normal soil 6.5, and soil acidification is tight
Weight, and Cd concentration of brown rice is more than GB2762-2012《Pollutants in food is limited the quantity》Cadmium Limited Doses (0.2mgkg~1), Cadmium in Soil
It is seriously polluted.Cd and Cu content severe overweights, belong to heavy metal severe contamination soil area.And nutritive element content full N and full P contain
Amount is low, and ASI systematic approach is extremely low, has a strong impact on crop yield.
As can be seen from Table 2, after crop harvesting, cell where soil conditioner embodiment of the present invention, formula 1 and 2 is effect
Fruit is optimal, is formulated 3 and 4 somewhat almost, and pH is 5.98~6.32 or so, and normal pH scopes, soil are had been restored to substantially
Acidizing degree has obvious decrease.It is formulated after the Multifunctional ecotype soil conditioner that 1st~4 area applies the present invention, soil part weight
Metal ion is passivated, and heavy metal pollution of soil is effectively improved.To lacking of the present invention group respectively in 8~10 area's soil of formula
Charcoal, humic acid and imidazole modified tapioca in part, thus the function of each component of the present invention can not be played, and then
Cell heavy metal pollution situation where showing it is still serious, and reason is mainly the cell component and lacked, wherein being not directed to
Any composition in urea-formaldehyde foam that preparation method of the present invention is obtained, pyroligneous acid, imidazole modified tapioca.And it is formulated 1~4
In be related to all components that preparation method of the present invention is obtained, therefore the heavy metal pollution of soil of several cells has and substantially changed
It is kind, but the data in 3rd~4 area of the area of comparative formula 1~2 and formula, it can be seen that the component ratio of formula is selected to soil function
Improve and heavy metal is fixed with important effect, therefore the ratio of the complete and each component of recipe ingredient can preferably cause
The soil conditioner effect reaches most preferably.
The harvest time of table 2 each experimental plot heavy metal, PH and nutrient detected value
The soil conditioner that the present invention is provided can not only adjust soil pH, improve the nutritional ingredient of soil, increase crop
Yield, can also alleviate the situation of heavy metal pollution of soil, detoxify with soil, build up fertility, improving soil physics performance and micro-
The multiple conditioning functions such as ecological environment.
Claims (7)
1. a kind of Multifunctional ecotype soil conditioner, it is characterised in that：Including following content of component：
0.1~3 part of urea-formaldehyde foam containing organic matter；
30~70 parts of charcoal；
30~70 parts of humic acid；
5~15 parts of pyroligneous acid；
Imidazole modified 40~80 parts of tapioca；
1~5 part of nitrogen-fixing bacteria.
2. Multifunctional ecotype soil conditioner according to claim 1, it is characterised in that：By following content of component group
Into：
0.5~2 part of urea-formaldehyde foam containing organic matter；
40~60 parts of charcoal；
40~60 parts of humic acid；
8~12 parts of pyroligneous acid；
Imidazole modified 50~70 parts of tapioca；
2~4 parts of nitrogen-fixing bacteria.
3. Multifunctional ecotype soil conditioner according to claim 2, it is characterised in that：The ureaformaldehyde containing organic matter
The content of organic matter is in more than 45wt% in foam.
4. the Multifunctional ecotype soil conditioner according to any one of claims 1 to 3, it is characterised in that：The imidazoles
Modified tapioca starch, which is prepared by the following method, to be obtained：Tapioca ammonium ceric nitrate effect under with methyl propenoic acid glycidyl
Ester is grafted, and graft product carries out aminating reaction with 2- amino-ethyls imidazoles, produces.
5. the Multifunctional ecotype soil conditioner according to any one of claims 1 to 3, it is characterised in that：The biology
Charcoal is obtained by plant refuse and domestic sludge by anaerobic charing.
6. Multifunctional ecotype soil conditioner according to claim 5, it is characterised in that：The plant refuse and life
The dry weight ratio of sludge living is (1~2):(1~2).
7. Multifunctional ecotype soil conditioner according to claim 5, it is characterised in that：The temperature of the anaerobic charing
For 400~500 DEG C.
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| CN201710413185.2A Pending CN107129807A (en) | 2017-06-05 | 2017-06-05 | A kind of Multifunctional ecotype soil conditioner |
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| CN113801661A (en) * | 2021-10-12 | 2021-12-17 | 河北省农林科学院农业资源环境研究所 | Soil conditioner special for peach trees |
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| CN108003882A (en) * | 2017-11-10 | 2018-05-08 | 郑州源冉生物技术有限公司 | A kind of renovation agent for administering metallic pollution soil and its preparation method and application |
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| CN113714269A (en) * | 2020-05-24 | 2021-11-30 | 中国环境科学研究院 | Technical method for optimizing and regulating soil nutrients |
| CN113801661A (en) * | 2021-10-12 | 2021-12-17 | 河北省农林科学院农业资源环境研究所 | Soil conditioner special for peach trees |
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Application publication date: 20170905 |