CN110092672A - A kind of iron content nutriment and its preparation method and application - Google Patents
A kind of iron content nutriment and its preparation method and application Download PDFInfo
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- CN110092672A CN110092672A CN201910481195.9A CN201910481195A CN110092672A CN 110092672 A CN110092672 A CN 110092672A CN 201910481195 A CN201910481195 A CN 201910481195A CN 110092672 A CN110092672 A CN 110092672A
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- iron content
- iron
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
-
- 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
-
- 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
-
- 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
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
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- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The present invention provides a kind of iron content nutriment and its preparation method and application, the iron content nutriment can provide ferro element for plant, soil, microorganism, and the iron content nutriment includes ferrous ammonium citrate；The preparation method of the iron content nutriment is warming up to 55 DEG C~85 DEG C, adds iron powder, and carry out reaction 2h~4h under agitation the following steps are included: a) by citric acid and water mixing；Then 35 DEG C~45 DEG C are cooled to, is passed through after ammonia is neutralized to pH > 5.5 and filters, obtains iron content nutriment after dry.The iron content nutriment can be improved absorption and assimilatory efficiency of the plant to ferro element, while degradable, environmental sound, and usage mode is flexible.The experimental results showed that iron content nutriment provided by the invention can effectively provide ferro element, improve crop iron deficiency symptoms, promote healthy growth of crops, mends iron significant effect and be better than EDTA-Fe；And citric acid in ferrous ammonium citrate is easy by soil microbial degradation, it is more environmentally friendly compared with EDTA-Fe.
Description
Technical field
The present invention relates to technical field of fertilizers more particularly to a kind of iron content nutriment and its preparation method and application.
Background technique
Iron is the indispensable element of plant growth, and during Chlorophyll synthesis, iron is the catalyst of a variety of enzymes；Iron is also joined
It lives with the redox reaction and electron transfer process in plant cell for example, leguminous plant plays the azotase of nitrogen fixation
Property center is exactly the compound of Mo-Fe protein and iron-sulfur protein；The work of relevant enzymes during iron or plant cell respiration
Property ingredient.
Fe2+It is the principal mode of plant absorption, except gramineae plant can directly absorb part Fe3+Except, it is most of to plant
Object can only directly utilize the Fe in soil2+。Fe3+Only Fe is reduced on root system surface2+It can just be absorbed later.Chelating state
Iron can also be absorbed by plants, and chelated ferrous iron protects iron ion not to be fixed using organic molecule, to improve the utilization of Fe
Efficiency plays better nutritive validity.The fixation of iron in order to prevent, Chang Liyong EDTA protects iron ion, but EDTA is not easy to drop
Solution, be manured into soil in easily cause environmental pollution；And Iron activiation is Fe in its product3+, plant absorption efficiency is not as good as Fe2+It is high.
Ferrous sulfate is common iron fertilizer, but its ferric iron precipitating that slightly solubility is easily formed in fertilizer, soil, so being only suitable for individually
Foliage-spray is not suitable for adding in fertilizer.
In order to solve the problems, such as that current plant is to be improved to the absorption efficiency of ferro element, while environment is not caused to bear
Load develops a kind of technical problem that the ferrous iron that usage mode flexibly chelates form is urgently to be resolved as those skilled in the art.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of iron content nutriment and its preparation method and application, this hair
The iron content nutriment of bright offer can be improved absorption and assimilatory efficiency of the plant to ferro element, while degradable, to environment without
Evil, and usage mode is flexible.
The present invention provides a kind of iron content nutriment, the iron content nutriment can mention for plant, soil, microorganism
For ferro element, which is characterized in that the iron content nutriment includes ferrous ammonium citrate.
Preferably, further includes:
Element needed for plant；Element needed for the plant includes a great number of elements, moderate-element, microelement and beneficial element
One of or it is a variety of；The a great number of elements is selected from one of nitrogen, phosphorus and potassium or a variety of；The moderate-element be selected from calcium, magnesium,
One of sulphur and silicon are a variety of；The microelement is selected from one of iron, boron, manganese, copper, zinc, molybdenum and chlorine or a variety of；It is described
Beneficial element is selected from one of nickel, cobalt, alum, titanium, aluminium, sodium and selenium or a variety of.
Preferably, further includes:
Fertilizer synergist；The fertilizer synergist includes urease inhibitor and/or nitrification inhibitor.
Preferably, the urease inhibitor in N- butylthiophosphoric triamide, diphenylphosphoryl diamines and quinhydrones one
Kind is a variety of；The nitrification inhibitor is selected from the chloro- 6- of 2- (trichloromethyl) pyridine, the chloro- 6- methylpyrimidine of 2- amino -4-, 3,4-
One of dimethyl pyrazole phosphate, dicyandiamide, 2- ethynyl pyridine and thiocarbamide are a variety of.
Preferably, further includes:
Growth activity ingredient；The growth activity ingredient includes plant growth regulator and/or biostimulant.
Preferably, the plant growth regulator is selected from diethyl aminoethyl hexanoate, chloropyuril, compound sodium nitrophenolate, auxin, gibberellin, second
Alkene, the basic element of cell division, abscisic acid, brassinosteroid, salicylic acid, jasmonic, paclobutrazol, polyamines, 3-indolyl acetic acid, 2,4-D and
One of α-naphthylacetic acid is a variety of；The biostimulant is selected from humic acid, fulvic acid, amino acid, marine algae extract, beneficial
One of microorganism and its secondary metabolites, chitosan and its derivative, protolysate are a variety of.
Preferably, further includes:
Functional activity ingredient；The functional activity ingredient is selected from insecticide, temptation agent, disinfectant, fungicide, mite killing
One of agent, fungicide, rust remover and safener are a variety of.
Preferably, further includes:
One of carrier, solvent, surfactant and antioxidant are a variety of.
The present invention also provides a kind of preparation methods of iron content nutriment, comprising the following steps:
A) citric acid and water are mixed, is warming up to 55 DEG C~85 DEG C, adds iron powder, and reacted under agitation
2h~4h；Then 35 DEG C~45 DEG C are cooled to, is passed through after ammonia is neutralized to pH > 5.5 and filters, obtains iron content nutrients after dry
Matter.
Preferably, the mass ratio of citric acid described in step a) and water is 1:(0.5~2.5)；The citric acid and iron powder
Molar ratio be 1:(0.3~1).
Preferably, the granularity of iron powder described in step a) is 100 mesh~250 mesh.
Preferably, mode dry described in step a) is spray drying, and the temperature of the drying is 130 DEG C~200 DEG C.
The present invention also provides application of the iron content nutriment in fertilizer described in a kind of above-mentioned technical proposal.
The present invention also provides a kind of application methods of iron content nutriment described in above-mentioned technical proposal, including following step
It is rapid:
The iron content nutriment is directly applied to plant or Activities of Some Plants tissue；
Or the iron content nutriment is applied into the soil or nutrient solution of the plant growth.
The present invention provides a kind of iron content nutriment and its preparation method and application, the iron content nutriment can be
Plant, soil, microorganism provide ferro element, and the iron content nutriment includes ferrous ammonium citrate；The iron content nutriment
Preparation method the following steps are included: a) citric acid and water are mixed, be warming up to 55 DEG C~85 DEG C, add iron powder, and stirring
Reaction 2h~4h is carried out under the conditions of mixing；Then 35 DEG C~45 DEG C are cooled to, is passed through after ammonia is neutralized to pH > 5.5 and filters, it is dry
After obtain iron content nutriment.Compared with prior art, iron content nutriment provided by the invention can be improved plant to iron member
The absorption and assimilatory efficiency of element, while degradable, environmental sound, and usage mode is flexible.The experimental results showed that the present invention
The iron content nutriment of offer can effectively provide ferro element, improve crop iron deficiency symptoms, promote healthy growth of crops, mend iron
Significant effect is better than present widely applied EDTA-Fe；And the citric acid in ferrous ammonium citrate can be easy to micro- by soil
Biodegrade is a kind of chelating iron material more environmentally friendly compared with EDTA-Fe.
In addition, preparation method simple process provided by the invention, easy to operate, raw material are cheap and easy to get, and production cost is low, energy
Multiple product combined method is formed, large-scale promotion application is suitble to.
Detailed description of the invention
Fig. 1 is the pictorial diagram for the ferrous ammonium citrate that the embodiment of the present invention 1 is prepared；
Chinese cabbage growing way figure when Fig. 2 is five different disposal group 19d；
Chinese cabbage growing way figure when Fig. 3 is five different disposal group 25d；
Fig. 4 is gained plant weights comparison diagram after the Chinese cabbage seedling of five different disposal groups harvests；
Fig. 5 is gained Chinese cabbage root system comparison diagram after the Chinese cabbage seedling of five different disposal groups harvests；
Fig. 6 is the dry weight relative percentage comparison diagram of gained Pemisetum flaccidum Griseb after the Chinese cabbage seedling of five different disposal groups harvests；
Fig. 7 is the test data for the ferrous fertile agronomy compliance test result of water-soluble humic acid that the embodiment of the present invention 2 provides；
Fig. 8 is the celery growing way comparison diagram of control group and experiment process group.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below.Obviously, described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of iron content nutriment, the iron content nutriment can mention for plant, soil, microorganism
For ferro element, the iron content nutriment includes ferrous ammonium citrate.
Currently, EDTA-Fe is widely applied in the prior art, there are no the production method of document announcement ferrous ammonium citrate and
Its application as iron content nutriment active constituent.Iron content nutriment provided by the invention includes ferrous ammonium citrate, energy
Absorption and assimilatory efficiency of the plant to ferro element, while degradable, environmental sound are enough improved, and usage mode is flexible.It is real
Test the result shows that, iron content nutriment provided by the invention can effectively provide ferro element, improve crop iron deficiency symptoms, promote to make
Object healthy growth mends iron significant effect and is better than present widely applied EDTA-Fe；And the citric acid in ferrous ammonium citrate
It can be easy to be a kind of chelating iron material more environmentally friendly compared with EDTA-Fe by soil microbial degradation.
In the present invention, the iron content nutriment can be applied directly to plant or Activities of Some Plants tissue, or raw to plant
Long soil application, or the preparation for plant nutrition liquid.In the present invention, the amount of application of the iron content nutriment is with lemon
Sour ferrous ammonium meter, preferably greater than 0 is less than or equal to 500 grams/ha, more preferably 50 grams/ha~250 grams/ha.The present invention
The mode of the application is not particularly limited, spreads fertilizer over the fields, spray, trickle irrigation, slight irrigation, soil using well known to those skilled in the art
The technical solution of injection, ditch spread；The mode of the application can also be handled by common method, such as injection, evaporation, spray
Mist, diffusion in its vicinity, environment or storage space effect carry out.
In the present invention, the iron content nutriment it is also preferable to include:
Element needed for plant.In the present invention, element needed for the plant preferably includes a great number of elements, moderate-element, micro-
One of secondary element and beneficial element are a variety of；The a great number of elements is preferably selected from one of nitrogen, phosphorus and potassium or a variety of；Institute
It states moderate-element and is preferably selected from one of calcium, magnesium, sulphur and silicon or a variety of；The microelement be preferably selected from iron, boron, manganese, copper,
One of zinc, molybdenum and chlorine are a variety of；The beneficial element is preferably selected from one of nickel, cobalt, alum, titanium, aluminium, sodium and selenium or more
Kind.The present invention is not particularly limited the source of element needed for the plant and form, and use is well known to those skilled in the art
Big-and-middle microelement and beneficial element existing for various forms, commercially available and self-control source.
In the present invention, the iron content nutriment it is also preferable to include:
Fertilizer synergist.In the present invention, the fertilizer synergist preferably includes urease inhibitor and/or nitrification inhibits
Agent.In the present invention, the urease inhibitor is selected from one of N- butylthiophosphoric triamide, diphenylphosphoryl diamines and quinhydrones
Or it is a variety of；The nitrification inhibitor is selected from the chloro- 6- of 2- (trichloromethyl) pyridine, the chloro- 6- methylpyrimidine of 2- amino -4-, 3,4- bis-
One of methylpyrazole phosphate, dicyandiamide, 2- ethynyl pyridine and thiocarbamide are a variety of.The present invention is to the fertilizer synergist
Source be not particularly limited, using above-mentioned specific kind of urease inhibitor well known to those skilled in the art and nitrification inhibit
The commercial goods of agent.
In the present invention, the iron content nutriment it is also preferable to include:
Growth activity ingredient.In the present invention, the growth activity ingredient preferably includes plant growth regulator and/or life
Object stimulin.In the present invention, the plant growth regulator is preferably selected from diethyl aminoethyl hexanoate (DA-6), chloropyuril, compound sodium nitrophenolate, life
Long element, gibberellin, ethylene, the basic element of cell division, abscisic acid, brassinosteroid, salicylic acid, jasmonic, paclobutrazol, polyamines, 3- Yin
One of indolylbutyric acid, 2,4-D and α-naphthylacetic acid are a variety of；The biostimulant is preferably selected from humic acid, fulvic acid, amino
One of acid, marine algae extract, beneficial microbe and its secondary metabolites, chitosan and its derivative, protolysate or
It is a variety of.The present invention is not particularly limited the source of the growth activity ingredient, using well known to those skilled in the art above-mentioned
The commercial goods of plant growth regulator and biostimulant.
In the present invention, the iron content nutriment it is also preferable to include:
Functional activity ingredient.In the present invention, the functional activity ingredient is preferably selected from insecticide, temptation agent, disappears
One of toxic agent, fungicide, acaricide, fungicide, rust remover and safener are a variety of.The present invention is to described functional living
Property ingredient source be not particularly limited, using above-mentioned insecticide well known to those skilled in the art, temptation agent, disinfectant, kill
Microbial inoculum, acaricide, fungicide, rust remover and safener commercial goods.
The present invention is not particularly limited the existing forms of the iron content nutriment, using known to those skilled in the art
Solution, soluble powder, particle, suspension and in polymeric material microencapsulation form.Of the invention preferred
Embodiment in, the existing forms of the iron content nutriment are solution；It can further include solvent on this basis, surface is lived
Property one of agent and antioxidant a variety of is used to form above-mentioned solution (liquid form)；The solvent is preferably water or acidity
Inorganic solvent；The acid mineral solvent is preferably hydrochloric acid solution；The surfactant is preferably methylcellulose or wooden
Plain sulfonate and its derivative；The antioxidant be preferably one of hydrochloric acid, hydroxylamine hydrochloride, dilute sulfuric acid and ascorbic acid or
It is a variety of.
In presently preferred embodiment, the existing forms of the iron content nutriment be soluble powder or
Particle；It can further include carrier on this basis and be used to form above-mentioned soluble powder or particle (solid forms)；The load
Body is preferably ammonium salt, grinds natural minerals, the synthetic mineral or organic material particles ground；The natural minerals ground are excellent
Choosing includes one of kaolin, clay, talcum, chalk, quartz, attapulgite, montmorillonite and diatomite or a variety of；The mill
Broken synthetic mineral includes silica, one of aluminium oxide and silicate or a variety of.
The present invention also provides a kind of preparation methods of iron content nutriment, comprising the following steps:
A) citric acid and water are mixed, is warming up to 55 DEG C~85 DEG C, adds iron powder, and reacted under agitation
2h~4h；Then 35 DEG C~45 DEG C are cooled to, is passed through after ammonia is neutralized to pH > 5.5 and filters, obtains iron content nutrients after dry
Matter.
In the present invention, the citric acid preferably includes anhydrous citric acid and/or Citric Acid Mono, more preferably a water lemon
Lemon acid.In the present invention, the mass ratio of the citric acid and water is preferably 1:(0.5~2.5), more preferably 1:2.
In the present invention, the mixed mode is stirring, using artificial stirring well known to those skilled in the art or machine
The technical solution of tool stirring.The present invention first mixes citric acid and water, is warming up to 55 DEG C~85 DEG C, is preferably warming up to 60
DEG C~80 DEG C, more preferably it is warming up to 70 DEG C.
In the present invention, the granularity of the iron powder is preferably 100 mesh~250 mesh, more preferably 150 mesh~200 mesh.At this
In invention, the molar ratio of the citric acid and iron powder is preferably 1:(0.3~1), more preferably 1:(0.4~0.5).
In the present invention, the time of the reaction is preferably 2h~4h, more preferably 3h~3.5h.
The present invention after completion of the reaction, is cooled to 35 DEG C~45 DEG C, is preferably cooled to 40 DEG C.
After cooling, the present invention is passed through ammonia and is neutralized to pH > 5.5, is preferably neutralized to pH > 7.
In the present invention, the mode of the drying is preferably spray-dried；Using well known to those skilled in the art small-sized
Spray drying device.In the present invention, the temperature of the drying is preferably 130 DEG C~200 DEG C, more preferably 160 DEG C~
170℃。
Preparation method simple process provided by the invention, easy to operate, raw material are cheap and easy to get, and production cost is low, can be formed
Multiple product combined method is suitble to large-scale promotion application.
The present invention also provides application of the iron content nutriment in fertilizer described in a kind of above-mentioned technical proposal.In this hair
In bright, the fertilizer include iron fertilizer material, trace element fertilizer, moderate-element fertilizer, a great number of elements fertilizer and new type functional fertilizer such as
Humic acid fertilizer, microbial manure, organic fertilizer etc. are corrected plant iron deficiency symptoms, are mentioned to crop for directly carrying out foliage-spray
For nutrition, plant health is kept, growth is promoted；The fertilizer further includes amino acid fertilizer, alginic acid fertilizer, for effectively providing
The demand of the iron of plant.
The present invention also provides a kind of application methods of iron content nutriment described in above-mentioned technical proposal, including following step
It is rapid:
The iron content nutriment is directly applied to plant or Activities of Some Plants tissue；
Or the iron content nutriment is applied into the soil or nutrient solution of the plant growth.
Iron content nutriment provided by the invention is in fertilizer in application, there is unique several advantages: (1) not with ferric iron
Together, ferrous iron can directly be absorbed by crop, and root system of plant can directly absorb the ferrous ion in the ferrous ammonium citrate, no
Conversion process is needed, improves absorption and assimilatory efficiency of the plant to ferro element, and then improve utilization rate of fertilizer；(2) it applies
In soil, there is no the difficult problem of degradation, environmental sounds；(3) active constituent ferrous ammonium citrate, iron be contained in 18.5% with
On, it much higher than the 6% of 13.5% and EDDHA-Fe of EDTA- iron, can be reduced fertilizer dispensing in application, mitigate labour and throw
Enter；(4) preparation of active constituent ferrous ammonium citrate and production process be simple, raw material is easy to get, is easy to operate, and production cost is low；(5)
Improve iron deficiency symptoms significant effect, nutrient needed for crop can be efficiently provided.
The present invention also provides a kind of iron content foliar fertilizers, comprising:
Iron content nutriment 90wt%~99wt%；
The functional additive of surplus；
The iron content nutriment is iron content nutriment described in above-mentioned technical proposal；The functional additive is antioxygen
Agent and/or surfactant.
In the present invention, the iron content foliar fertilizer is hermetically sealed, the present invention couple in the form of wettable powder or microparticle
This is not particularly limited.In the present invention, the iron content foliar fertilizer is configured to solution using Shi Yishui and is administered, water after preparation
The mass percentage content of iron content nutriment is preferably 1%~3% in solution, is used immediately after preparation.
The present invention also provides a kind of iron content Liquid Fertilizers, comprising:
Iron content nutriment 0.5wt%~45wt%；
Solvent 50wt%~95.5wt%
The functional additive of surplus；
It is preferred that are as follows:
Iron content nutriment 0.5wt%~25wt%；
Solvent 72wt%~94wt%
The functional additive of surplus；
The iron content nutriment is iron content nutriment described in above-mentioned technical proposal；The solvent is preferably water or acid
Property inorganic solvent；The acid mineral solvent is preferably hydrochloric acid solution；The functional additive is that antioxidant and/or surface are living
Property agent.
The present invention also provides a kind of trace element fertilizers, comprising:
Iron content nutriment 0.5wt%~50wt%；
0~10wt% of Chelated Manganese；
0~30wt% of boric acid；
0~50wt% of chelated zinc；
0~1wt% of chelated copper；
0~1wt% of molybdate；
It is preferred that are as follows:
Iron content nutriment 30wt%~40wt%；
Chelated Manganese 7wt%~8wt%；
Boric acid 20wt%~25wt%；
Chelated zinc 30wt%~40wt%；
Chelated copper 0.5wt%~1wt%；
Molybdate 0.01wt%~0.2wt%；
The iron content nutriment is iron content nutriment described in above-mentioned technical proposal；The chelating agent is preferably selected from second
Ethylenediamine tetraacetic acid (EDTA) (EDTA), ethylenediamine dihydroxyphenyl acetic acid (EDDHA), diethylenetriamine pentaacetic acid (DTPA), hydroxyethyl ethylenediamine
Triacetic acid (HEDTA), amino acid, fulvic acid or alginic acid.
The present invention also provides a kind of a great number of elements fertilizer, comprising:
0~99wt% of a great number of elements source
0~1wt% of boric acid；
0~3wt% of Chelated Manganese；
0~3wt% of chelated zinc；
0~1wt% of chelated copper；
0~2wt% of molybdate；
Iron content nutriment 0.02wt%~5wt%；
0~0.5wt% of DA-6；
0~10wt% of fulvic acid；
It is preferred that are as follows:
0~98wt% of a great number of elements source
Boric acid 0wt%~0.5wt%；
0~1wt% of Chelated Manganese；
Chelated zinc 0wt%~1wt%；
0~0.3wt% of chelated copper；
Molybdate 0-0.2wt%；
Iron content nutriment 0.2wt%~2wt%；
0~0.2wt% of DA-6；
0~5wt% of fulvic acid；
The a great number of elements source includes urea, ammonium chloride, ammonium sulfate, potassium dihydrogen phosphate, ammonium dihydrogen phosphate, potassium nitrate, chlorine
Change one or more of potassium, potassium sulfate, ammonium nitrate, is matched according to the actual demand of Different Crop different times；It is described
Iron content nutriment is iron content nutriment described in above-mentioned technical proposal；The chelating agent is preferably selected from ethylenediamine tetra-acetic acid
(EDTA), ethylenediamine dihydroxyphenyl acetic acid (EDDHA), diethylenetriamine pentaacetic acid (DTPA), hydroxyethylethylene diamine tri-acetic acid
(HEDTA), amino acid, fulvic acid or alginic acid.
The present invention also provides a kind of microbial bacterial agents, comprising:
‰~0.01wt of iron content nutriment 0.0001wt ‰；
Microorganism and its metabolite 0.1wt%~10wt%；
Surplus is fermentation substrate, filler and protective agent.
The iron content nutriment is iron content nutriment described in above-mentioned technical proposal.In the present invention, the iron content
Nutriment is used to provide nutrient to the microorganism in microbial inoculum.In the present invention, the microbial bacterial agent preferably select solution or
The form of soluble powder, more preferably soluble powder.
The present invention also provides a kind of biological organic fertilizers, comprising:
Iron content nutriment 2wt%~5wt%；
Organic matter 95wt%~98wt%；
The iron content nutriment is iron content nutriment described in above-mentioned technical proposal.In the present invention, the iron content
Nutriment is for providing microorganism and the necessary micronutrient of plant.
The present invention also provides a kind of water-soluble ferrous fertilizer of humic acid, comprising:
Bioactivity humic acid 91wt%~95wt%；
Iron content nutriment 5wt%~9wt%；
The iron content nutriment is iron content nutriment described in above-mentioned technical proposal.In the present invention, described water-soluble
Property the ferrous fertilizer of humic acid is preferred selects soluble powder, the form of liquid or particle, more preferably particle.In the present invention, institute
Mineral nutrients can also be further increased by stating the ferrous fertilizer of water-soluble humic acid, the additive as humic acid fertilizer.
The present invention also provides a kind of iron content humic acid fertilizers, comprising:
Bioactivity humic acid 3wt%~95wt%；
Iron content nutriment 0.1wt%~9wt%；
A great number of elements source 0.1wt%~40wt%；
Microelement source 0.01wt%~5wt%.
The iron content nutriment is iron content nutriment described in above-mentioned technical proposal；The a great number of elements source includes urine
One of element, ammonium chloride, ammonium sulfate, potassium dihydrogen phosphate, ammonium dihydrogen phosphate, potassium nitrate, potassium chloride, potassium sulfate, ammonium nitrate or
It is several；The microelement source is one of manganese, copper, zinc and boron, molybdenum and chlorine or a variety of.
The present invention also provides a kind of alginic acid fertilizers, comprising:
0~50wt% of marine algae extract；
Iron content nutriment 0.1wt%~9wt%；
A great number of elements source 0.1wt%~40wt%；
Microelement source 0.01wt%~5wt%；
The functional additive of surplus；
The iron content nutriment is iron content nutriment described in above-mentioned technical proposal；The a great number of elements source includes urine
One of element, ammonium chloride, ammonium sulfate, potassium dihydrogen phosphate, ammonium dihydrogen phosphate, potassium nitrate, potassium chloride, potassium sulfate, ammonium nitrate or
It is several；The microelement source is one of manganese, copper, zinc and boron, molybdenum and chlorine or a variety of；The functional additive is selected from
One in plant growth regulator, biostimulant, functional activity ingredient, solvent, carrier, antioxidant and surfactant
Kind is a variety of.
The present invention also provides a kind of amino acid fertilizers, comprising:
0~50wt% of amino acid；
Iron content nutriment 0.1wt%~9wt%；
A great number of elements source 0.1wt%~40wt%；
Microelement source 0.01wt%~5wt%；
The functional additive of surplus；
The iron content nutriment is iron content nutriment described in above-mentioned technical proposal；The a great number of elements source includes urine
One of element, ammonium chloride, ammonium sulfate, potassium dihydrogen phosphate, ammonium dihydrogen phosphate, potassium nitrate, potassium chloride, potassium sulfate, ammonium nitrate or
It is several；The microelement source is one of manganese, copper, zinc and boron, molybdenum and chlorine or a variety of；The functional additive is selected from
One in plant growth regulator, biostimulant, functional activity ingredient, solvent, carrier, antioxidant and surfactant
Kind is a variety of.
The present invention provides a kind of iron content nutriment and its preparation method and application, the iron content nutriment can be
Plant, soil, microorganism provide ferro element, and the iron content nutriment includes ferrous ammonium citrate；The iron content nutriment
Preparation method the following steps are included: a) citric acid and water are mixed, be warming up to 55 DEG C~85 DEG C, add iron powder, and stirring
Reaction 2h~4h is carried out under the conditions of mixing；Then 35 DEG C~45 DEG C are cooled to, is passed through after ammonia is neutralized to pH > 5.5 and filters, it is dry
After obtain iron content nutriment.Compared with prior art, iron content nutriment provided by the invention can be improved plant to iron member
The absorption and assimilatory efficiency of element, while degradable, environmental sound, and usage mode is flexible.The experimental results showed that the present invention
The iron content nutriment of offer can effectively provide ferro element, improve crop iron deficiency symptoms, promote healthy growth of crops, mend iron
Significant effect is better than present widely applied EDTA-Fe；And the citric acid in ferrous ammonium citrate can be easy to micro- by soil
Biodegrade is a kind of chelating iron material more environmentally friendly compared with EDTA-Fe.
In addition, preparation method simple process provided by the invention, easy to operate, raw material are cheap and easy to get, and production cost is low, energy
Multiple product combined method is formed, large-scale promotion application is suitble to.
In order to further illustrate the present invention, technical solution provided by the invention is retouched in detail below with reference to embodiment
It states.
Embodiment 1
250g Citric Acid Mono is added in 500mL water and stirs, temperature rises to 70 DEG C, and being slowly added to 30g granularity is 150
Mesh~200 mesh iron powder, and be stirred continuously, react 3.5h；Then 40 DEG C are cooled the temperature to, is passed through after ammonia is neutralized to pH > 7
It is filtered to remove impurity, then is sprayed with small spraying drying equipment, spray outlet temperature is 160 DEG C~170 DEG C, obtains activity
Substance ferrous ammonium citrate.
The ferrous ammonium citrate that the embodiment of the present invention 1 is prepared is odorless in yellow green, powdered, easily deliquesces, is dissolved in
Water, insoluble in organic solvents such as ethyl alcohol, ether；The powder type pictorial diagram of the chelating ferrous salt is shown in Figure 1.
Using inductive coupling plasma emission spectrograph (model: ICPS-7510；Manufacturer: Japanese Shimadzu) to this
The each component content for the ferrous ammonium citrate that inventive embodiments 1 are prepared is detected, and as a result ginseng is shown in Table 1.
The each component content data for the ferrous ammonium citrate that 1 embodiment of the present invention 1 of table is prepared
| Ingredient | Fe | N | Water-insoluble | Moisture |
| Embodiment 1 | >=18.5wt% | >=8wt% | ≤ 0~0.1wt% | ≤ 1wt% |
As shown in Table 1, the iron content for the ferrous ammonium citrate that the embodiment of the present invention 1 is prepared reaches 18.5wt%
More than, much higher than the iron content in sold EDTA- iron and EDDHA-Fe product on the market, (iron in commercially available EDTA- iron product contains
Amount is only 13.5wt%, 6%) iron content in EDDHA-Fe product is only；In addition, water is insoluble in the ferrous ammonium citrate powder
Property impurity content can be down to 0, the obtained active constituent ferrous ammonium citrate of preparation method for illustrating that the embodiment of the present invention 1 provides is pure
Degree is high, and iron content is high.
The benefit iron effect for the ferrous ammonium citrate that the embodiment of the present invention 1 is prepared is detected, and with other iron content
Substance compares, and the specific method is as follows:
Influence of the different iron compounds to Chinese cabbage growth and Nutrient Absorption is studied using five different disposal groups；Examination
It tests using ciltivating process, is carried out in greenhouse, the selection consistent Chinese cabbage seedling of growing way is transferred to 1/2Hoagland and Aron is (complete dense
Degree) Chinese cabbage seedling wherein the ferro element contained is as shown in table 2 after Chinese cabbage seedling starts growth, is transferred to Hoagland by solution
With Aron (full concentration) hydroponics；Ventilation 2h daily, every 7d replace one time of nutrition liquid；Water used in nutrient solution is desalted water, iron
Content is less than 0.0001mg/L.
The iron compound type and iron content data of 2 five different disposal groups of table
When water planting culture 11d, 19d and 25d, take pictures to Chinese cabbage seedling；And it is received when water planting culture 25d
It obtains；Water-removing processing is carried out after seedling harvest and is dried, and plant weights, the iron content in Yi Jigen, old leaf and young leaves are measured.
Observe Chinese cabbage growing way, measure photosynthetic parameters before harvesting, weigh fresh weight after harvest, the measurement dry weight of water-removing drying later and
Root, old leaf, the nitrogen of young leaves, phosphorus, potassium, iron, magnesium and calcium element content.T2 processing group (ferrous ammonium citrate) fresh weight is compared with iron deficiency processing
Group (CK) increases by 76.52%, sees Fig. 2~3, wherein Chinese cabbage growing way figure when Fig. 2 is five different disposal group 19d, Fig. 3 five
Chinese cabbage growing way figure when a different disposal group 25d.
As can be seen that the Chinese cabbage seedling of iron deficiency processing group (CK) shows typical iron deficiency symptoms, young leaves from Fig. 2~3
Yellowing leaf is serious, while growing heavily suppressed；And each processing group of different shape iron does not occur the iron deficiency of young leaves yellow
Symptom.From the point of view of formalness, the Chinese cabbage seedling growth of T2 processing group (ferrous ammonium citrate) is best, T3 processing group (EDTA-
Fe3+) take second place, it is T1 processing group (ferrous sulfate) and T4 processing group (ferric citrate) later.The result shows that ferrous iron is to Chinese cabbage
The facilitation effect of growth is substantially better than ferric iron；Wherein, without the ferrous sulfate of chelating despite ferrous iron, but it is easily by water
In phosphate anion fix, be not so good as the trivalent iron salt of citric acid chelating to the growth-promoting effect of Chinese cabbage seedling.
The analysis of the plant weights (see Fig. 4) as obtained by after being harvested to Chinese cabbage seedling, it can be seen that at different iron compounds
The influence managed to plant dry matter accumulation is almost the same with the trend of plant growing way, wherein T2 processing group (ferrous ammonium citrate)
Chinese cabbage seedling accumulates dry matter that can be most.
In addition, gained Chinese cabbage root system comparison diagram is shown in Figure 5 after the Chinese cabbage seedling harvest of five different disposal groups；Drying
Afterwards, the dry weight relative percentage comparison diagram of gained Pemisetum flaccidum Griseb is shown in Figure 6 after the Chinese cabbage seedling harvest of five different disposal groups.
T2 processing group (ferrous ammonium citrate) root system is sturdy, and weight of root system accounting is above other processing, is iron deficiency processing group (CK)
2.13 times, be relatively all ferrous form T1 processing group (ferrous sulfate) increase by 10%.The above experimental data can be seen that this hair
The active material ferrous ammonium citrate that bright embodiment 1 is prepared can not only be more efficient meet the needs of plant is to ferro element,
It may also reach up the effect of growth-promoting promoting root growth.
Embodiment 2
It is granulated after ferrous ammonium citrate and bioactivity humic acid that embodiment 1 is prepared are mixed, obtains water solubility
The ferrous fertilizer of humic acid；The ferrous fertilizer of water solubility humic acid contains ferrous ammonium citrate 8wt%, bioactivity humic acid
92wt%.
The water-soluble pH value of water solution up to 100%, 20% of the ferrous fertilizer of the water solubility humic acid is 8-9.The water solubility is rotten
Growing sour ferrous fertilizer can be used for dripping that sprinkling irrigation, punching is applied and foliage-spray.
The ferrous fertile agronomy compliance test result of the water-soluble humic acid that the embodiment of the present invention 2 provides: test is slow in power, Nintaus
It is carried out in Controlled Release Fertilizer Engineering Technical Research Centre greenhouse, at the beginning of 11 months 2014, until terminate in by the end of April, 2015.
Test material is cucumber, and cucumber culture substrate is the river sand of 1-3mm granularity；River sand is first clean with distilled water flushing,
Then completely spare with the distilled water flushing containing carbendazim again.The ferrous fertilizer of humic acid is the water-soluble humic acid that embodiment 2 provides
Ferrous fertilizer, humic acid iron fertilizer are the commercially available ferric citrates of purchase, and the humic acid mixing of 92wt% is equipped with 8% mass fraction
It obtains.
Test method are as follows: cucumber seedling is placed in volume and is 6L, fills in the culturing pot of 5kg river sand and cultivate, every alms bowl 1
Strain；Cucumber is divided into 2 groups, is cultivated respectively with 1/2Hogland pancebrin and iron deficiency nutrient solution, and in the following life of cucumber
The long stage carries out pouring root: 5-6 piece leaf, 7-8 piece leaf, 9-10 piece with the ferrous fertilizer of the humic acid of various concentration and humic acid iron fertilizer solution
Leaf.After the iron fertilizer of different shape is dissolved and dilutes 1000 times, pouring root is carried out according to the concentration in table 3, every plant of 300mL, weekly 1
It is secondary.Each processing iron dosage ginseng is shown in Table 3.
The test of the ferrous fertile agronomy compliance test result of the water-soluble humic acid that 3 embodiment of the present invention 2 of table provides is set
Meter
It tests and starts to harvest on March 15th, 2015, every the primary harvest situation of 10 days records.Test result i.e. not similar shape
The humic acid iron fertilizer of state and concentration is handled to iron deficiency and the not influence of iron deficiency cucumber fruits yield (there was no significant difference, P < 0.05)
It is shown in Figure 7.
It can be seen from figure 7 that the cucumber of iron deficiency culture is under the supplement of no outside source of humic acid iron fertilizer, fruit number only has
The half of the cucumber yield of pancebrin culture, and the 4th fructescence is also postponed, and illustrates production of the ferro element to cucumber
Measure most important, iron deficiency inhibits cucumber to bear fruit and fruit maturation.After supplemented with humic acid iron fertilizer, the cucumber of iron deficiency culture is simultaneously
Do not occur iron deficiency symptoms, and fruit number is suitable with the cucumber of pancebrin culture, especially concentration be 0.001% humic acid
The cucumber of ferrous fertilizer processing, fruit yield are even higher than the cucumber of pancebrin culture.In addition, the cucumber of iron deficiency processing is being supplemented
After outside source of humic acid iron fertilizer, the maturation time of fruit also shifts to an earlier date.For the different phase of iron fertilizer, compared to humic acid chela
For the ferric iron of conjunction, with the divalent iron salt of citric acid chelating although increasing production cucumber fruits by pressing down under high concentration (0.2%)
Production is used, but is better than humic acid chelating iron fertilizer to the fruit effect of increasing production of cucumber at low concentrations.The result shows that selection is suitable for
The ferrous fertile dosage of humic acid, the effect for promoting cucumber production promoting can be played, and effect is better than ferric humate.
Embodiment 3
The ferrous ammonium citrate and EDTA- manganese, boric acid, EDTA- zinc, EDTA- copper, sodium molybdate that embodiment 1 is prepared
Mixing, obtains iron content trace element fertilizer；The iron content trace element fertilizer contains ferrous ammonium citrate 33.4wt%, EDTA- manganese
7.2wt%, boric acid 22.9wt%, EDTA- zinc 35.7wt%, EDTA- copper 0.7wt%, sodium molybdate 0.1wt%.
The iron content trace element fertilizer is Water soluble fertilizer, in use, 10000-30000 times of dilution, foliage-spray.
Embodiment 4
The ferrous ammonium citrate and potassium nitrate, ammonium dihydrogen phosphate, potassium dihydrogen phosphate, urea, boron that embodiment 1 is prepared
Acid, the mixing of EDTA- zinc, sodium molybdate obtain iron content a great number of elements fertilizer；The iron content a great number of elements fertilizer contains ferrous ammonium citrate
0.6wt%, potassium nitrate 30.4wt%, ammonium dihydrogen phosphate 16.8wt%, potassium dihydrogen phosphate 20wt%, urea 31.55wt%, boric acid
0.3wt%, EDTA- zinc 0.3wt%, sodium molybdate 0.05wt%.
The iron content a great number of elements fertilizer is Water soluble fertilizer, in use, 800-1500 times of dilution, punching is applied or trickle irrigation uses.
The iron content a great number of elements fertilizer agronomy compliance test result that the embodiment of the present invention 4 provides: test site in Ningxia Province Helan County,
Test period is on November 24,20 days to 2018 October in 2018.
Test material is celery, and Water soluble fertilizer is the iron content a great number of elements fertilizer that embodiment 4 provides, and control Water soluble fertilizer is product liter
The big Water soluble fertilizer 20-20-20 of Ji Qian Nintaus, area suitable with the iron content a great number of elements hypertrophy secondary element nutrient content that embodiment 4 provides
It is not, the ferrous ammonium citrate without containing 0.6wt%.
Test method are as follows: greenhouse area is 0.8 mu, and test process group (T) and control group (CK) each half take trickle irrigation
Fertilization mode applies fertilizer 3 times altogether.Control group is consistent with test process group fertilizing time, number, and ginseng is shown in Table 4.
The experimental design for the iron content a great number of elements fertilizer agronomy compliance test result that 4 embodiment of the present invention 4 of table provides
| Processing group | Fertilizer | Dosage |
| T | The iron content a great number of elements fertilizer that embodiment 4 provides | 8kg/ mus |
| CK | The big Water soluble fertilizer 20-20-20 of Nintaus before upgrading | 8kg/ mus |
Test results and analysis:
Be tracked after trickle irrigation 3 times, discovery compared to control group, in test process group entire breeding time growing way show compared with
It is good, it is shown in Figure 8.Plant height, stem thickness, SPAD value and the weight of 10 plants of celeries of METHOD FOR CONTINUOUS DETERMINATION, test process group relatively compare component
11.6%, 4.9%, 2.2% and 8.7% is not improved, and specifically the influence ginseng to each index of celery growth is shown in Table 5 (data
It is averaged).
The test data for the iron content a great number of elements fertilizer agronomy compliance test result that 5 embodiment of the present invention 4 of table provides
| Processing group | Plant height | Increase | Stem thickness (mm) | Increase | SPAD | Increase | Weight | Increase |
| CK | 46cm | —— | 58.3mm | —— | 35.9 | —— | 1.5kg | —— |
| T | 51.3cm | 11.6% | 61.13mm | 4.9% | 36.7 | 2.2% | 1.63kg | 8.7% |
As can be seen from Table 5, ferrous ammonium citrate can effectively provide ferro element, promote photosynthesis of plant, thus to whole
A growing process brings the effect of being obviously promoted.By taking the present embodiment as an example, the citric acid that the embodiment of the present invention 1 is prepared is sub-
Iron ammonium as mend iron effective component, equally can add or be substituted into it is existing it is various for plant, soil product in, Ke Yiji
Big promotion product effect, completes the update of product.
Embodiment 5
The ferrous ammonium citrate and potassium nitrate, ammonium dihydrogen phosphate, potassium dihydrogen phosphate, urea, boron that embodiment 1 is prepared
Acid, EDTA- zinc, sodium molybdate, fertilizer synergist --- 3,4- dimethyl pyrazole phosphate mixing obtain iron content a great number of elements fertilizer；
The iron content a great number of elements fertilizer contains ferrous ammonium citrate 0.6wt%, potassium nitrate 30.4wt%, ammonium dihydrogen phosphate 16.8wt%,
Potassium dihydrogen phosphate 20wt%, urea 31.25wt%, boric acid 0.3wt%, EDTA- zinc 0.3wt%, sodium molybdate 0.05wt%, 3,4-
Dimethyl pyrazole phosphate 0.3wt%.
The iron content a great number of elements fertilizer is Water soluble fertilizer, in use, 800-1500 times of dilution, punching is applied or trickle irrigation uses.
Embodiment 6
Ferrous ammonium citrate that embodiment 1 is prepared and potassium nitrate, potassium dihydrogen phosphate, urea, EDTA- manganese, boric acid,
EDTA- zinc, EDTA- copper, sodium molybdate, DA-6, fulvic acid mixing obtain iron content a great number of elements fertilizer；The iron content a great number of elements fertilizer
Contain ferrous ammonium citrate 1wt%, potassium nitrate 65.4wt%, potassium dihydrogen phosphate 16wt%, urea 15wt%, EDTA- manganese
0.4wt%, boric acid 0.5wt%, EDTA- zinc 0.5wt%, EDTA- copper 0.1wt%, sodium molybdate 0.05wt%, DA-6
0.05wt%, fulvic acid 1wt%.
The iron content a great number of elements fertilizer is Water soluble fertilizer, in use, 800-1500 times of dilution, punching is applied or trickle irrigation uses.
Embodiment 7
It is granulated after ferrous ammonium citrate, bioactivity humic acid and ferric citrate that embodiment 1 is prepared are mixed,
Obtain iron content humic acid fertilizer；The iron content humic acid fertilizer contains ferrous ammonium citrate 8wt%, bioactivity humic acid
91.8wt%.Ferric citrate 0.2wt%.
The water-soluble pH value of water solution up to 100%, 20% of the iron content humic acid fertilizer is 8-9.The water solubility humic acid is sub-
Iron fertilizer can be used for dripping sprinkling irrigation, punching one of is applied and foliage-spray, and can further increase mineral nutrients such as nitrogen, phosphorus, potassium or
It is a variety of, to realize widely application.
Embodiment 8
It ferrous ammonium citrate that embodiment 1 is prepared and mixes, obtains containing the microbial inoculum of microorganism and its metabolite
To microbial bacterial agent；The microbial bacterial agent includes ferrous ammonium citrate 0.005 ‰, microorganism and its metabolite 7wt%, remaining
Amount is fermentation substrate, filler and protective agent.
Embodiment 9
Ferrous ammonium citrate and the organic matter mixing that embodiment 1 is prepared, obtain biological organic fertilizer；The biology has
Machine fertilizer contains ferrous ammonium citrate 3wt%, organic matter 97wt%.
The above description of the disclosed embodiments, enables those skilled in the art to implement or use the present invention.It is right
A variety of modifications of these embodiments will be readily apparent to those skilled in the art, and as defined herein one
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
It will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with the principles and novel features disclosed herein
Widest scope.
Claims (14)
1. a kind of iron content nutriment, the iron content nutriment can provide ferro element for plant, soil, microorganism, special
Sign is that the iron content nutriment includes ferrous ammonium citrate.
2. iron content nutriment according to claim 1, which is characterized in that further include:
Element needed for plant；Element needed for the plant includes in a great number of elements, moderate-element, microelement and beneficial element
It is one or more；The a great number of elements is selected from one of nitrogen, phosphorus and potassium or a variety of；The moderate-element be selected from calcium, magnesium, sulphur and
One of silicon is a variety of；The microelement is selected from one of iron, boron, manganese, copper, zinc, molybdenum and chlorine or a variety of；It is described beneficial
Element is selected from one of nickel, cobalt, alum, titanium, aluminium, sodium and selenium or a variety of.
3. iron content nutriment according to claim 1, which is characterized in that further include:
Fertilizer synergist；The fertilizer synergist includes urease inhibitor and/or nitrification inhibitor.
4. iron content nutriment according to claim 3, which is characterized in that it is thio that the urease inhibitor is selected from N- butyl
One of phosphoric triamide, diphenylphosphoryl diamines and quinhydrones are a variety of；The nitrification inhibitor is selected from the chloro- 6- of 2- (trichloromethyl)
In the chloro- 6- methylpyrimidine of pyridine, 2- amino -4-, 3,4- dimethyl pyrazole phosphate, dicyandiamide, 2- ethynyl pyridine and thiocarbamide
It is one or more.
5. iron content nutriment according to claim 1, which is characterized in that further include:
Growth activity ingredient；The growth activity ingredient includes plant growth regulator and/or biostimulant.
6. iron content nutriment according to claim 5, which is characterized in that it is fresh that the plant growth regulator is selected from amine
Ester, chloropyuril, compound sodium nitrophenolate, auxin, gibberellin, ethylene, the basic element of cell division, abscisic acid, brassinosteroid, salicylic acid, jasmine
One of jasmine acid, paclobutrazol, polyamines, 3-indolyl acetic acid, 2,4-D and α-naphthylacetic acid are a variety of；The biostimulant is selected from
Humic acid, fulvic acid, amino acid, marine algae extract, beneficial microbe and its secondary metabolites, chitosan and its derivative, egg
One of white hydrolysate is a variety of.
7. iron content nutriment according to claim 1, which is characterized in that further include:
Functional activity ingredient；The functional activity ingredient be selected from insecticide, temptation agent, disinfectant, fungicide, acaricide,
One of fungicide, rust remover and safener are a variety of.
8. iron content nutriment according to claim 1, which is characterized in that further include:
One of carrier, solvent, surfactant and antioxidant are a variety of.
9. a kind of preparation method of iron content nutriment, comprising the following steps:
A) citric acid and water are mixed, are warming up to 55 DEG C~85 DEG C, add iron powder, and carry out under agitation reaction 2h~
4h；Then 35 DEG C~45 DEG C are cooled to, is passed through after ammonia is neutralized to pH > 5.5 and filters, obtains iron content nutriment after dry.
10. preparation method according to claim 9, which is characterized in that the mass ratio of citric acid described in step a) and water
For 1:(0.5~2.5)；The molar ratio of the citric acid and iron powder is 1:(0.3~1).
11. preparation method according to claim 9, which is characterized in that the granularity of iron powder described in step a) be 100 mesh~
250 mesh.
12. preparation method according to claim 9, which is characterized in that dry mode described in step a) is spraying dry
Dry, the temperature of the drying is 130 DEG C~200 DEG C.
13. a kind of application of iron content nutriment according to any one of claims 1 to 8 in fertilizer.
14. a kind of application method of iron content nutriment according to any one of claims 1 to 8, comprising the following steps:
The iron content nutriment is directly applied to plant or Activities of Some Plants tissue；
Or the iron content nutriment is applied into the soil or nutrient solution of the plant growth.
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