CN104310339B - A kind of method preparing Fructus Mali pumilae nutrition fertilizer - Google Patents
A kind of method preparing Fructus Mali pumilae nutrition fertilizer Download PDFInfo
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- CN104310339B CN104310339B CN201410478838.1A CN201410478838A CN104310339B CN 104310339 B CN104310339 B CN 104310339B CN 201410478838 A CN201410478838 A CN 201410478838A CN 104310339 B CN104310339 B CN 104310339B
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Abstract
The present invention relates to chemical technology field, disclose a kind of method preparing Fructus Mali pumilae nutrition fertilizer, by studying the amount of the various nutrients that apple development process absorbs from soil, analyze the ratio of various nutrients needed for apple development, phosphoric acid and phosphoamide is adopted to react generation intermediate, in this intermediate, pass into ammonia again produce ammonium dihydrogen phosphate, it it is a part of ammonium dihydrogen phosphate crystallization, regulate needed for the content of nitrogen and phosphorus meets apple development in solution with this, prepare Fructus Mali pumilae nutrition fertilizer. This production method makes raw material be fully utilized, it does not have waste liquid discharges contaminated environment, and the ammonium dihydrogen phosphate quality produced is better, and the Fructus Mali pumilae nutrition fertilizer of preparation is less costly.
Description
Technical field
The present invention relates to chemical technology field, particularly relate to a kind of method preparing Fructus Mali pumilae nutrition fertilizer.
Background technology
Fructus Mali pumilae belongs to Rosaceae, is kind of a food low in calories, and every 100 grams only produce 60 kilocalories of heats; Fructus Mali pumilae Middle nutrition composition solubility is big, is easily absorbed by the body, therefore has the title of " running water ", is conducive to dissolving element sulphur, makes skin lubrication tender. Also having the elements such as copper, iodine, manganese, zinc, potassium in Fructus Mali pumilae, human body is as lacked these elements, and skin will dry, easily splits, very itch. It is applied in black-eyed place, it is possible to help eliminate black eye Fructus Mali pumilae containing abundant saccharide, be mainly the materials such as sucrose, reducing sugar and protein, fat, phosphorus, ferrum, potassium; Possibly together with malic acid, quininic acid, citric acid, tartaric acid, tannic acid, pectin, cellulose, vitamin B group, vitamin C and trace element edible portion 76%.
Prior art does not have Nutritional fertilizer for apple, in order to improve the yield of Fructus Mali pumilae, usual applications of farmyard manure or compound fertilizer, but, applications of farmyard manure needs carry out compost or make compost, and makes consumption big, and time-consuming, effort and labor intensity are big. And the nutrient of compound fertilizer is arranged in pairs or groups needed for not meeting apple development, causing utilization rate of fertilizer relatively low, part fertilizer can remain in soil, causes soil compaction.
By at internet retrieval, there is researcher that the nutrient needed for apple development is analyzed, prepare Fructus Mali pumilae nutrition fertilizer, application for a patent for invention number is 201110451160.4 disclose " a kind of cool humid zone nutrition fertilizer ", it adopts specified raw material and mixing ratio to make fertilizer master batch, can increase the content of soil with organic matter, promote that apple tree is to the absorption of fertilizer and utilization. But its part material source is few, and price is high. Cause that the manufacturing cost of this fertilizer is higher.
Ammonium dihydrogen phosphate, is also called MAP, is a kind of chemicals, and the crystal of a kind of white, heating can resolve into ammonium metaphosphate. Ammonium dihydrogen phosphate can serve as the fireproof agent of fertilizer and timber, paper, fabric, it is also possible in pharmacy and feed additive for ruminant.At present, the monoammonium phosphate double decomposition that ammonium dihydrogen phosphate adopts is prepared. It is water, potassium chloride, ammonium hydrogen carbonate to be fed intake in proportion, is subsequently adding the phosphoric acid of ormal weight, after being sufficiently stirred for, adjust pH value, after heating concentration, cooled crystallization, centrifugation, namely obtaining product after drying, the mother liquid obtained concentration of centrifugation is the multi-elements composite fertilizers such as nitrogenous, phosphorus, potassium. This technique does not have three waste discharge, and production cost relatively neutralisation, crystallization process, extraction, ion exchange are low. But product quality is not so good as neutralisation, extraction, ion exchange, does agricultural only, and therefore, the value of its product can be significantly less than other method. But, crystallization process, in legal, extraction and ion exchange prepare in the process of potassium dihydrogen phosphate and all have waste liquid to discharge, to environment.
The improvement of above technology still also exists bigger problem and difficulty, its process regulation is bad, then can generate other other products in the reaction, as ammonium dihydrogen phosphate can generate ammonium metaphosphate when heating, cause that the yield of ammonium dihydrogen phosphate is relatively low, meanwhile, whole production technology also has the discharge of substantial amounts of waste material, it is difficult to solve the zero-emission problem of pollutant; And, ammonium dihydrogen phosphate product is also difficult to precipitate out completely in the process of crystallization, but it is in the saturated solution of saturation all the time, then make ammonium dihydrogen phosphate content in the solution bigger, if degree of depth crystallization, the purity of the ammonium dihydrogen phosphate product then obtained is poor, affects the quality of ammonium dihydrogen phosphate product.
Production method about ammonium dihydrogen phosphate has a lot, such as, number of patent application is 201210194632.7 disclosed " methods producing industrial phosphoric acid ammonium dihydrogen ", its the technical scheme is that the first step add in phosphoric acid by wet process a certain amount of phosphate ore pulp reaction stand a period of time carry out preliminary desulfurization, then after taking supernatant addition barium salt and sodium salt defluorinate, pass into ammonia to be neutralized, refilter and namely obtain ammonium phosphate solution, again by the phosphoric acid hybrid reaction after this ammonium phosphate solution and extraction, condensing crystallizing just obtains ammonium dihydrogen phosphate. The biphosphate ammonium concentration that the method is produced is higher, but its production technology is complex, and production cost is higher, and has waste liquid to discharge, to environment.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of method preparing Fructus Mali pumilae nutrition fertilizer, with solve existing fertilizer Middle nutrition element collocation do not meet the Fructus Mali pumilae demand to nutrient, cause that the fertilizer that Fructus Mali pumilae is used is relatively low by Fructus Mali pumilae absorbance, some of them element compound remains in soil, change the structure of soil, contaminated environment. Simultaneously, solve in the process preparing ammonium dihydrogen phosphate product, the waste of the substantial amounts of ammonium dihydrogen phosphate that ammonium dihydrogen phosphate crystallization not exclusively can cause, biphosphate crystalline ammonium brings a large amount of impurity into can to excessively again ammonium dihydrogen phosphate product, then makes the technical problem that the purity of ammonium dihydrogen phosphate product is relatively low.
The present invention solves above-mentioned technical problem by the following technical programs:
A kind of method preparing ammonium dihydrogen phosphate, comprises the steps:
(1) intermediate is prepared: first add phosphoric acid in synthesis groove, and the temperature of phosphoric acid is increased to 100-130 DEG C, then adding phosphoamide in synthesis groove makes itself and phosphoric acid carry out synthetic reaction, after reaction 160-200min, crystallization after temperature is cooled to 20-40 DEG C, centrifugation obtains the mol ratio of intermediate, described phosphoric acid and phosphoamide again is (1.2-1.4): 1;
(2) ammonium dihydrogen phosphate is prepared: sent into by the intermediate obtained in step (1) in synthesis groove, and add ammonia in synthesis groove, the mol ratio of ammonia and intermediate is (4-6): 1, the control response time is 40-60min, reaction temperature is 15-25 DEG C, and to regulate pH value be 8-9, after reaction terminates, the slip of acquisition is joined circulation crystallization in cooler crystallizer, filtrate is analyzed in detection simultaneously, when in filtrate, the ratio of nitrogen and the quality of phosphorus pentoxide is (12-14): time (6-7), stop crystallization and filter, ammonium dihydrogen phosphate product is obtained after being dried by the filter cake obtained, described ammonia concn is 25-28%,
(3) Fructus Mali pumilae nutrition fertilizer is prepared: in the filtrate filter in step (2) ammonium dihydrogen phosphate, add that the compound of potassium adjusts nitrogen content to be 12-14%, phosphorus pentoxide content be 6-7%, potassium oxide content is 12-14%, middle and trace element compound is added again in filtrate, finally filtrate is sent in baker, for 3 DEG C/min, temperature is increased to 26-30 DEG C with programming rate, drying filtrate to moisture is 3-4%, can be prepared by Fructus Mali pumilae nutrition fertilizer.
Described intermediate is urea phosphate.
In described step (1), phosphoric acid and phosphoamide being added in synthesis groove with mol ratio for 1.3:1 and mix, controlling reaction temperature is 120 DEG C, and after reacting 180min, after temperature is cooled to 30 DEG C, centrifugation obtains intermediate again.
In described step (2), when intermediate reacts with ammonia, mixing speed is 200r/min, and the response time is 50min, and the pH value of reaction solution is 8.5.
Described medium trace element compound is sodium hydroxide, calcium sulfate, zinc sulfate, magnesium sulfate, copper sulfate, Borax and manganese sulfate.
The mol ratio of described intermediate and ammonia is 1:5.
Adopting programming rate when drying in described step (3) is that 3 DEG C/min is warming up to 28 DEG C, and after dry 50min, adjusting moisture is 3.5%.
In described Fructus Mali pumilae nutrition fertilizer nitrogen content be 13%, phosphorus pentoxide content be 6.5%, potassium oxide content be 13%.
The beneficial effects of the present invention is:
(1), in tradition ammonium dihydrogen phosphate preparation technology, although MAP double decomposition does not have three waste discharge, production cost relatively neutralisation, crystallization process, extraction, ion exchange are low. But product quality is not so good as neutralisation, extraction, ion exchange, does agricultural only, and therefore, the value of its product can be significantly less than other method. But, crystallization process, in legal, extraction and ion exchange prepare in the process of potassium dihydrogen phosphate and all have waste liquid to discharge, to environment. After the present invention adopts phosphoric acid to react with phosphoamide, then react with ammonia with reaction product, then make ammonium dihydrogen phosphate crystallization, by detecting nitrogen in filtrate, the content of phosphorus composition control the degree of crystallization, be used for producing Fructus Mali pumilae nutrition fertilizer by filtrate. Ammonium dihydrogen phosphate crystallization degree is less, so the ammonium dihydrogen phosphate purity made is higher. Meanwhile, it is used for preparing Fructus Mali pumilae nutrition fertilizer by filtrate so that the production cost of Fructus Mali pumilae nutrition fertilizer is relatively low.
(2) by the present invention in that preparation ammonium dihydrogen phosphate, and then the content of nitrogen in adjustment reactant liquor, phosphorus meets the ratio needed for apple development, the Fructus Mali pumilae nutrition fertilizer produced can be absorbed more fully by Fructus Mali pumilae, with less fertilizers input, the more Fructus Mali pumilae of output, has significant economic worth.
(3) present invention prepares filtrate in the process of ammonium dihydrogen phosphate for preparing Fructus Mali pumilae nutrition fertilizer, it does not have contaminated environment discharged by tail washings, has the significant value of environmental protection.
(4) the Fructus Mali pumilae nutrition fertilizer of the present invention is chemical combination state Chemical Mixed Fertilizer, by to parameter in production technology, namely it is exactly temperature, the control of material concentration and proportioning, after making phosphoric acid and urea reaction, generate urea phosphate product, urea phosphate product itself has stronger acidity, and be the chemical combination state double salt that is combined together to form of the mode by coordinate bond between phosphoric acid and carbamide, also it is fertile as crop in conventional art, and the absorbance comparison carbamide that crop is to this chemical combination state double salt, ammonium carbonate, the unitary such as ammonium nitrate, binary fertilizer absorbance is a kind of chemical combination state special fertilizer all preferably, but, this chemical combination state double salt is under the environment that phosphoric acid exists, at the temperature of 80-250 DEG C, the decomposition polyreaction of complexity can be there is, urea phosphate is made to form (H2PO4)-(H2NCONH3)+Two ions, (H2NCONH3)+Ion is close with phosphoric acid, and under the environment that temperature is 80-160 DEG C, is formedIntermediate-ion and dihydrogen phosphate, and between C and O, form coordinate bond, this intermediate-ion can form multielement intermediate-ion with centering element compound chelating, and then can continue to the compound electronegative with other or ion formation chelate, improve constituent content in double salt, and then the nutrient content in the double salt that this ion exists can be adjusted, simultaneously, this chelate can be hydrolyzed again and by crop, and then effectively long-term can provide fertilizer efficiency for crop.
Detailed description of the invention
In order to conveniently it is understood by those skilled in the art that the present invention will be further described below in conjunction with embodiment. Embodiment is only the illustration to this invention, is not limitation of the invention, and the step not making in embodiment to illustrate is all prior art, is not described in detail at this.
The present invention carries out research and discussion by the mechanism that phosphoric acid and phosphoamide are reacted, and recognizes in conjunction with prior art literature, and phosphoric acid and phosphoamide react generation urea phosphate, and its molecular formula is: CO (NH2)2.H3PO4Under the environment of higher temperature, the chemical bond meeting dialysis between H and O in phosphoric acid, hydrion is combined with carbamide and forms the ionic state containing positive charge, urea phosphate is made to form the ion double salt that a kind of positive and negative charge attracts mutually, its mechanism structural response following expression: CO (NH2)2.H3PO4→(H2PO4)-.(H2NCONH3)+。
Urea phosphate ion double salt under the environment that phosphoric acid exists, (H therein2NCONH3)+Cation is close with phosphoric acid, forms the intermediate-ion of C → O coordinate bond, is (CO5PN2H8)+, and then make in urea phosphate intermediate containing substantial amounts of (H2PO4)-(CO5PN2H8)+Ion, when adding excessive and appropriate potassium ion, dihydrogen phosphate and potassium ion form ammonium dihydrogen phosphate crystal and are precipitated, unnecessary potassium ion and (CO5PN2H8)+Ionic reaction, and displace part NH4 +So that containing (CO in solution5PNH4K)+Double salt ion, and analyze and control the content of N in solution, P, K element by detecting, heat drying can be prepared by containing N, P, K element chemical combination state compound fertilizer.
The main chemical reactions equation that the present invention relates to is:
Reaction equation one:
CO(NH2)2+H3PO4→CO(NH2)2.H3PO4
Reaction equation two:
Reaction equation three:
Wherein, the dotted line between carbon atom and oxygen atom represents there is coordinate bond between C atom and O atom.
With embodiment, the production method of the present invention is described further below:
Embodiment one
A kind of method preparing Fructus Mali pumilae nutrition fertilizer, comprises the following steps:
(1) intermediate is prepared: first add phosphoric acid in synthesis groove, and the temperature of phosphoric acid is increased to 100 DEG C, then adding phosphoamide in synthesis groove makes itself and phosphoric acid carry out synthetic reaction, after reaction 200min, crystallization after temperature is cooled to 20 DEG C, centrifugation obtains the mol ratio of intermediate, described phosphoric acid and phosphoamide again is 1.2:1;
(2) ammonium dihydrogen phosphate is prepared: sent into by the intermediate obtained in step (1) in synthesis groove, and add ammonia in synthesis groove, the mol ratio of ammonia and intermediate is 4:1, the control response time is 40min, reaction temperature is 25 DEG C, promote that reaction carries out with mixing speed for 200r/min stirring, and to regulate pH value be 8, after reaction terminates, the slip of acquisition is joined circulation crystallization in cooler crystallizer, filtrate is analyzed in detection simultaneously, when in filtrate, the ratio of nitrogen and the quality of phosphorus pentoxide is 12:6, stop crystallization and filter, ammonium dihydrogen phosphate product is obtained after being dried by the filter cake obtained, described ammonia concn is 25%,
(3) prepare Fructus Mali pumilae nutrition fertilizer: add in the filtrate filter in step (2) ammonium dihydrogen phosphate potassium hydroxide adjust nitrogen content be 12%, phosphorus pentoxide content be 6%, potassium oxide content is 12%, then adds sodium hydroxide, calcium sulfate, zinc sulfate, magnesium sulfate, copper sulfate, Borax and manganese sulfate in filtrate. Finally sending in baker by filtrate, for 3 DEG C/min, temperature is increased to 26 DEG C with programming rate, drying filtrate to moisture is 4%, can be prepared by Fructus Mali pumilae nutrition fertilizer.
Described intermediate is urea phosphate.
In described phosphoric acid, the content of phosphorus pentoxide is 50%.
Embodiment two
A kind of method preparing Fructus Mali pumilae nutrition fertilizer, comprises the following steps:
(1) intermediate is prepared: first add phosphoric acid in synthesis groove, and the temperature of phosphoric acid is increased to 130 DEG C, then adding phosphoamide in synthesis groove makes itself and phosphoric acid carry out synthetic reaction, after reaction 160min, crystallization after temperature is cooled to 40 DEG C, centrifugation obtains the mol ratio of intermediate, described phosphoric acid and phosphoamide again is 1.4:1;
(2) ammonium dihydrogen phosphate is prepared: sent into by the intermediate obtained in step (1) in synthesis groove, and add ammonia in synthesis groove, the mol ratio of ammonia and intermediate is 6:1, the control response time is 60min, promote that reaction carries out with mixing speed for 200r/min stirring, reaction temperature is 15 DEG C, and to regulate pH value be 9, after reaction terminates, the slip of acquisition is joined circulation crystallization in cooler crystallizer, filtrate is analyzed in detection simultaneously, when in filtrate, the ratio of nitrogen and the quality of phosphorus pentoxide is 14:7, stop crystallization and filter, ammonium dihydrogen phosphate product is obtained after being dried by the filter cake obtained, described ammonia concn is 26%,
(4) prepare Fructus Mali pumilae nutrition fertilizer: add in the filtrate filter in step (2) ammonium dihydrogen phosphate the compound of potassium adjust nitrogen content be 14%, phosphorus pentoxide content be 7%, potassium oxide content be 14%, sodium hydroxide, calcium sulfate, zinc sulfate, magnesium sulfate, copper sulfate, Borax and manganese sulfate is added again in filtrate, finally filtrate is sent in baker, for 3 DEG C/min, temperature is increased to 30 DEG C with programming rate, drying filtrate to moisture is 3%, can be prepared by Fructus Mali pumilae nutrition fertilizer.
Described intermediate is urea phosphate.
In described phosphoric acid, the content of phosphorus pentoxide is 75%.
Embodiment three
(1) intermediate is prepared: first add phosphoric acid in synthesis groove, and the temperature of phosphoric acid is increased to 120 DEG C, then adding phosphoamide in synthesis groove makes itself and phosphoric acid carry out synthetic reaction, after reaction 180min, crystallization after temperature is cooled to 30 DEG C, centrifugation obtains the mol ratio of intermediate, described phosphoric acid and phosphoamide again is 1.3:1;
(2) ammonium dihydrogen phosphate is prepared: sent into by the intermediate obtained in step (1) in synthesis groove, and add ammonia in synthesis groove, the mol ratio of ammonia and intermediate is 5:1, the control response time is 50min, reaction temperature is 20 DEG C, and to regulate pH value be 8.5, promote that reaction carries out with mixing speed for 200r/min stirring, after reaction terminates, the slip of acquisition is joined circulation crystallization in cooler crystallizer, filtrate is analyzed in detection simultaneously, when in filtrate, the ratio of nitrogen and the quality of phosphorus pentoxide is 13:6.5, stop crystallization and filter, ammonium dihydrogen phosphate product is obtained after being dried by the filter cake obtained, described ammonia concn is 28%,
(5) prepare Fructus Mali pumilae nutrition fertilizer: add in the filtrate filter in step (2) ammonium dihydrogen phosphate the compound of potassium adjust nitrogen content be 13%, phosphorus pentoxide content be 6.5%, potassium oxide content be 13%, sodium hydroxide, calcium sulfate, zinc sulfate, magnesium sulfate, copper sulfate, Borax and manganese sulfate is added again in filtrate, finally filtrate is sent in baker, for 3 DEG C/min, temperature is increased to 28 DEG C with programming rate, drying filtrate to moisture is 3.5%, can be prepared by Fructus Mali pumilae nutrition fertilizer.
Described intermediate is urea phosphate.
In described phosphoric acid, the content of phosphorus pentoxide is 60%.
It is verified below in conjunction with the test example technique effect to technical solution of the present invention and the quality of ammonium dihydrogen phosphate product that produces:
Test example one
According to HG/T3466-2012 " People's Republic of China's chemical industry standard " chemical reagent ammonium dihydrogen phosphate test experience method, the quality of the product that embodiments of the invention one, embodiment two and embodiment three are produced is detected, and its result is as shown in table 1.
Table 1 produces the quality measurements of ammonium dihydrogen phosphate product for embodiments of the invention:
As can be seen from the above table, the various parameters of the ammonium dihydrogen phosphate product that technical scheme is produced exceed " People's Republic of China's chemical industry standard " about ammonium dihydrogen phosphate required standard, and the purity of product is also higher, has significant progressive.
Test example two
Choose 200 strain growing ways better, and the short anvil tree of Fuji being in the best fruiting period, it is randomly divided into four groups, often organize 50 strains, it is numbered experimental group one, experimental group two, experimental group three and contrast groups one respectively, when annual apple tree rudiment apply fertilizer 1kg/ strain, 1kg/ strain of applying fertilizer florescence, fruit grow up rapidly the phase fertilising 1kg/ strain. What experimental group one was used is the fertilizer of the embodiment of the present invention one, and what experimental group two was used is the fertilizer of the embodiment of the present invention two, and what experimental group three was used is the fertilizer of the embodiment of the present invention three, and what contrast groups was used is conventional instant nitrogenousfertilizer, and statistical result is following table such as:
By above-mentioned statistical result it can be seen that this Fructus Mali pumilae nutrition fertilizer can significantly improve the yield of Fructus Mali pumilae, be suitable to promote the use of.
Claims (8)
1. the method preparing Fructus Mali pumilae nutrition fertilizer, it is characterised in that: comprise the following steps:
(1) intermediate is prepared: first add phosphoric acid in synthesis groove, and the temperature of phosphoric acid is increased to 100-130 DEG C, then adding phosphoamide in synthesis groove makes itself and phosphoric acid carry out synthetic reaction, after reaction 160-200min, crystallization after temperature is cooled to 20-40 DEG C, centrifugation obtains the mol ratio of intermediate, described phosphoric acid and phosphoamide again is (1.2-1.4): 1;
(2) ammonium dihydrogen phosphate is prepared: sent into by the intermediate obtained in step (1) in synthesis groove, and add ammonia in synthesis groove, the mol ratio of ammonia and intermediate is (4-6): 1, the control response time is 40-60min, reaction temperature is 15-25 DEG C, and to regulate pH value be 8-9, after reaction terminates, the slip of acquisition is joined circulation crystallization in cooler crystallizer, filtrate is analyzed in detection simultaneously, when in filtrate, the ratio of nitrogen and the quality of phosphorus pentoxide is (12-14): time (6-7), stop crystallization and filter, ammonium dihydrogen phosphate product is obtained after being dried by the filter cake obtained, described ammonia concn is 25-28%,
(3) Fructus Mali pumilae nutrition fertilizer is prepared: in the filtrate filter in step (2) ammonium dihydrogen phosphate, add that the compound of potassium adjusts nitrogen content to be 12-14%, phosphorus pentoxide content be 6-7%, potassium oxide content is 12-14%, middle and trace element compound is added again in filtrate, finally filtrate is sent in baker, for 3 DEG C/min, temperature is increased to 26-30 DEG C with programming rate, drying filtrate to moisture is 3-4%, can be prepared by Fructus Mali pumilae nutrition fertilizer.
2. the method for preparation Fructus Mali pumilae nutrition fertilizer according to claim 1, it is characterised in that: described intermediate is urea phosphate.
3. the method for preparation Fructus Mali pumilae nutrition fertilizer according to claim 1, it is characterized in that: in described step (1), phosphoric acid and phosphoamide are added in synthesis groove with mol ratio for 1.3:1 and mix, controlling reaction temperature is 120 DEG C, after reaction 180min, after temperature is cooled to 30 DEG C, centrifugation obtains intermediate again.
4. the method for preparation Fructus Mali pumilae nutrition fertilizer according to claim 1, it is characterised in that: in described step (2), when intermediate reacts with ammonia, mixing speed is 200r/min, and the response time is 50min, and the pH value of reaction solution is 8.5.
5. the method for preparation Fructus Mali pumilae nutrition fertilizer according to claim 1, it is characterised in that: described middle and trace element compound is sodium hydroxide, calcium sulfate, zinc sulfate, magnesium sulfate, copper sulfate, Borax and manganese sulfate.
6. the method for preparation Fructus Mali pumilae nutrition fertilizer according to claim 1, it is characterised in that: the mol ratio of described intermediate and ammonia is 1:5.
7. the method for preparation Fructus Mali pumilae nutrition fertilizer according to claim 1, it is characterised in that: adopting programming rate time dry in described step (3) is that 3 DEG C/min is warming up to 28 DEG C, and after dry 50min, adjusting moisture is 3.5%.
8. the method for preparation Fructus Mali pumilae nutrition fertilizer according to claim 1, it is characterised in that: in described Fructus Mali pumilae nutrition fertilizer nitrogen content be 13%, phosphorus pentoxide content be 6.5%, potassium oxide content be 13%.
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