CN104692949A - Nitro-sulfur based compound fertilizer applicable to fruit tree planting and preparation method thereof - Google Patents
Nitro-sulfur based compound fertilizer applicable to fruit tree planting and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a nitro-sulfur based compound fertilizer applicable to fruit tree planting. The nitro-sulfur based compound fertilizer is prepared from main materials and auxiliary materials, wherein the main materials comprise the following materials in parts by weight: 30 to 40 parts of ammonium nitrate phosphorus, 20 to 35 parts of potassium sulphate, 15 to 25 parts of potassium nitrate, and 10 to 25 parts of monoammonium phosphate; the auxiliary materials comprise the following materials in parts by weight: 3 to 7 parts of magnesium oxide, 2 to 4 parts of instant-dissolved boron, 3 to 7 parts of ferric oxide, 2 to 5 parts of zinc sulfate, 5 to 12 parts of sodium humate, 0.05 to 0.1 part of compound sodium nitrophenolate, 0.3 to 0.7 part of JT composite strain powder, 0.1 to 0.5 part of urea-based chelated ionized calcium, and 0.5 to 2.0 pats of anti-blocking agent. The nitro-sulfur based compound fertilizer applicable to fruit tree planting can be stored for a long term without blocking, so that the soil can be effectively prevented from blocking; in addition, the nitro-sulfur based compound fertilizer applicable to fruit tree planting has the effects of preventing and resisting diseases and increasing output and yield.
Description
Technical field
The present invention relates to technical field of fertilizers, be specifically related to a kind of nitrate-based compound fertilizer being applicable to planting fruit trees.
Background technology
In fruit tree growth process, need from soil, absorb appropriate various mineral nutrient elements, grow to maintain its normal growth, wherein, comprise macroelement as nitrogen, phosphorus, potassium, moderate-element is as calcium, magnesium, sulphur, and trace element is as iron, manganese, copper, zinc, boron etc., especially fruit tree early spring germinate, flowering period and the phase of bearing fruit, using the complete quick-acting fertilizer of N P and K has remarkably influenced to the development degree of fruit tree and the quality of fruit and output.
Nitrate-based compound fertilizer is generally containing more nitric nitrogen and a certain amount of ammonium nitrogen, and other nutritive elements such as phosphorus potassium required for plant-growth, compared with conventional composite fertilizer, there is the feature of quick dissolved, quick effect, because conventional fertilizers is in the conversion link of nitrogen element, nitrogen with the volatilization of ammonia form and can run off, the waste of nitrogen nutrient is more than at least 50%, and the nitric nitrogen in nitrate-based compound fertilizer directly can be absorbed by crop, thus utilization rate of fertilizer improves greatly, belong to high-quality and efficient, environmental protection, non-harmful new-type fertilizer.
At present, the nitrogenous fertilizer market of China is main mainly with urea, and the ratio shared by nitrate-based compound fertilizer is extremely low, domestic nitrate-based compound fertilizer manufacturing enterprise is less, China every year from external import nitrate-based compound fertilizer to meet domestic market demand, therefore, nitrate-based compound fertilizer has huge market potential.Although nitrate-based compound fertilizer has the fast advantage of fertilizer efficiency, there is following shortcoming: first ubiquity soil is easy to harden in nitrate-based compound fertilizer easy moisture absorption caking under Long-term Storage condition simultaneously after life-time service; Its two be soil permeability reduce, when defective aeration, nitrate radical can form N through denitrification
2o and N
2, thus cause the loss of nitrogen; It three is that nitrate-based compound fertilizer long-term storage easily hardens into block and affects its commodity value, and general conventional talcum powder wraps up multiple and fertilizer, though alleviate the agglomeration problems of product to a certain extent, adds the dust content in product.
Summary of the invention
An object of the present invention is to solve at least the problems referred to above, a kind of nitrate-based compound fertilizer being applicable to planting fruit trees adopting microwave drying fertiliser granulates and anti-hard caking agent two kinds of modes to prepare long storage periods can not to lump is provided;
A further object of the invention is the nitrate-based compound fertilizer adopting microbial bacteria pulvis seed dressing preparation to be applicable to planting fruit trees, effectively keeps soil from packing together;
A further object of the invention promotes growing of fruit tree and flower and fruit protecting etc. by adding urine base chelating ion calcium, sodium nitrophenolate and Sodium salts humic acids, and play the effect of disease resistance increasing both production and income.
In order to realize according to these objects of the present invention and other advantage, the invention provides a kind of nitrate-based compound fertilizer being applicable to planting fruit trees, comprise major ingredient and auxiliary material, wherein major ingredient is made up of the following material with parts by weight: ammonium nitrate phosphorus 30-40 part, potassium sulfate 20-35 part, saltpetre 15-25 part and monoammonium phosphate 10-25 part; Described auxiliary material is made up of the following material with parts by weight: magnesium oxide 3-7 part, instant boron 2-4 part, ferric oxide 3-7 part, zinc sulfate 2-5 part, Sodium salts humic acids 5-12 part, sodium nitrophenolate 0.05-0.1 part, JT composite bacteria pulvis 0.3-0.7 part, urine base chelating ion calcium 0.1-0.5 part and anti-hard caking agent 0.5-2.0 part.
Preferably, the described nitrate-based compound fertilizer being applicable to planting fruit trees, described anti-hard caking agent is the activation tricalcium phosphate of 60%-75% and massfraction by massfraction is that 25%-40% cats product forms.
Object of the present invention can also be realized by a kind of preparation method being applicable to the nitrate-based compound fertilizer of planting fruit trees further, comprises the following steps successively: the preparation of solid formulation, the preparation of half-stuff, granulation, microwave drying and aftertreatment,
Described granulation refers to and solid formulation is placed in roller pelletizer, then is sprayed onto by half-stuff in the solid formulation in described roller pelletizer, after tumbling granulation 3-5min, obtains granular mixture;
Described microwave drying refers to that granular mixture granulation obtained is placed on tunnel type micro wave drying plant travelling belt and carries out drying, and arranging microwave power is 3-7W/g, and travelling belt transfer rate is 250-350r/min.
Preferably; the described preparation method being applicable to the nitrate-based compound fertilizer of planting fruit trees; described aftertreatment comprises first time cooling, screening and coating step successively; wherein; described coating refers to first by the surface of sodium nitrophenolate solution spray attachment to above-mentioned granular mixture; add in anti-hard caking agent to above-mentioned granular mixture to be placed in after cylinder coating machine processes 4-6min by above-mentioned weight part again and obtain nitrate-based compound fertilizer through second time cooling after second time microwave drying
Wherein said sodium nitrophenolate solution refers to that massfraction is the aqueous solution of 0.8%-1.4%, and in described second time microwave drying, arranging microwave power is 2-4W/g, and line speed is 350-500 r/min.
Preferably, the described preparation method being applicable to the nitrate-based compound fertilizer of planting fruit trees, dresses seed before described coating, the granular mixture after screening is added JT composite bacteria pulvis by above-mentioned weight part, is placed in cylinder coating machine and processes 2-5min.
Preferably, the described preparation method being applicable to the nitrate-based compound fertilizer of planting fruit trees,
The preparation of described solid formulation refers to and potassium sulfate, saltpetre, monoammonium phosphate, magnesium oxide, instant boron, nitrocalcite, ferric oxide, zinc sulfate and Sodium salts humic acids to be mixed by above-mentioned weight part, stirring and evenly mixing is placed in pulverizer and pulverizes, cross 40 mesh sieves, add by weight again after urine base chelating ion calcium mixes and obtain solid formulation, for subsequent use;
The preparation of described half-stuff refers to, by above-mentioned weight part, ammonium nitrate phosphorus is added fusion tank, and at 130-150 DEG C, melting 10-20min obtains half-stuff, for subsequent use.
Preferably, the described preparation method being applicable to the nitrate-based compound fertilizer of planting fruit trees,
Described first time cooling refers to that it is 30-35 DEG C that the granular mixture through microwave drying is naturally cooled to temperature;
Described screening refers to carries out particle screen selecting by the granular mixture obtained after first time cooling by vibratory screening apparatus, and the aperture of described vibratory screening apparatus is 2.0mm*4.8mm;
Described second time cooling refers to and the granular mixture after second time microwave drying is naturally cooled to temperature lower than 25 DEG C.
The present invention at least comprises following beneficial effect:
(1) anti-hard caking agent effectively prevents the caking of nitrate-based compound fertilizer in storage between fertiliser granulates surface, wherein activating tricalcium phosphate replaces conventional talcum powder to invest fertiliser granulates surface, possesses the wet ability of high appearance, weaken the caking generation because humidity causes, cats product forms uniform hydrophobic membrane on fertiliser granulates surface simultaneously, while its anti-caking of reduction, suitably improve the sustained release performance of fertiliser granulates, improve the utilization ratio of fertilizer;
(2) to compare conventional warm air drying temperature low in microwave drying, for granular mixture, warm air drying easily causes particle surface to be chapped from the cold, the moisture distribution of particle from inside to surface is uneven, and the microwave drying time is short, and can even dried particles, thoroughly dry, fertilizer can be kept away and exempt to stack its internal moisture for a long time and migrate to surface and caking phenomenon occurs;
(3) sodium nitrophenolate is broad spectrum type plant-growth regulator, is formulated in fertilizer and can accelerates fruit tree vine growth and development, plays short root strong sprout, flower and fruit protecting, bears fruit and expand, improve output and strengthen the effects such as anti-adversity ability;
Sodium salts humic acids can play the effect of disease resistance increasing both production and income to fruit tree, such as, have good curative effect to the canker of the fruit trees such as treatment apple tree, pear tree and peach, play certain synergism simultaneously to the improvement of Soil structure;
Urine base chelating ion calcium can promote the absorption of fruit tree nutrient and chlorophyllous formation, increase pericarp toughness, promote fruit uniform coloring, extend shelf time and shelf-lives, improve crop quality, improve the effect of crop yield, the early ageing caused because of calcium deficiency fruit tree, plant is short and small, the tip of a root rots, yellows, malformed fruit, outer skin phenomenon etc. have superpower prophylactic-therapeutic effect;
(4) to be electronegative soil clay particle formed with organic to be connected by the polyvalent cation of positively charged soil aggregate, phosphate fertilizer is too much, then cause the calcium magnesium cation of phosphate anion in soil to be combined and form insoluble phosphate, spoiled soil crumb structure causes soil compaction, and when in fertilizer, potash fertilizer is too much, the polyvalent cation forming soil aggregate can be cemented out, the crumb structure of same spoiled soil, JT composite bacteria pulvis contains multiple-microorganism flora, the phosphoric acid salt that its secretory product can dissolve in soil is plain by phosphorus, potassium and micro-cation release, crumb structure is recovered with key bridge form, eliminate soil compaction,
(5) cooled temperature is too high for the first time, can affect sodium nitrophenolate component and adhere to particle surface, causes sodium nitrophenolate to scatter and disappear; Temperature is too low, is unfavorable for the follow-up coating carrying out granular mixture, and meanwhile, because needs carry out second time microwave, suitably cooling can save energy.
Part is embodied by explanation below by other advantage of the present invention, target and feature, part also will by research and practice of the present invention by those skilled in the art is understood.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, can implement according to this with reference to specification sheets word to make those skilled in the art.
Should be appreciated that used hereinly such as " to have ", other element one or more do not allotted in " comprising " and " comprising " term or the existence of its combination or interpolation.
Embodiment 1:
The nitrate-based compound fertilizer being applicable to planting fruit trees of the present invention, comprises major ingredient and auxiliary material, and wherein major ingredient is made up of the following material with parts by weight: 30 parts, ammonium nitrate phosphorus, potassium sulfate 20 parts, 15 parts, saltpetre and monoammonium phosphate 10 parts; Described auxiliary material is made up of the following material with parts by weight: 3 parts, magnesium oxide, instant boron 2 parts, ferric oxide 3 parts, 2 parts, zinc sulfate, Sodium salts humic acids 5 parts, sodium nitrophenolate 0.05 part, 0.3 part, JT composite bacteria pulvis, urine base chelating ion calcium 0.1 part and anti-hard caking agent 0.5 part.
Wherein, described anti-hard caking agent by massfraction be 60% activation tricalcium phosphate and massfraction be that 40% cats product forms.
The preparation method being applicable to the nitrate-based compound fertilizer of planting fruit trees of the present invention, comprises the following steps successively: the preparation of solid formulation, the preparation of half-stuff, granulation, microwave drying and aftertreatment,
The preparation of step one, solid formulation: potassium sulfate, saltpetre, monoammonium phosphate, magnesium oxide, instant boron, nitrocalcite, ferric oxide, zinc sulfate and Sodium salts humic acids are mixed by above-mentioned weight part, stirring and evenly mixing is placed in pulverizer and pulverizes, cross 40 mesh sieves, add by weight again after urine base chelating ion calcium mixes and obtain solid formulation, for subsequent use;
The preparation of step 2, half-stuff: ammonium nitrate phosphorus is added fusion tank by above-mentioned weight part, at 130 DEG C, melting 10min obtains half-stuff, for subsequent use.
Step 3, granulation: solid formulation is placed in roller pelletizer, then half-stuff is sprayed onto in the solid formulation in described roller pelletizer, after tumbling granulation 3min, obtain granular mixture;
Step 4, microwave drying: granular mixture granulation obtained is placed on tunnel type micro wave drying plant travelling belt and carries out drying, and arranging microwave power is 3W/g, and travelling belt transfer rate is 250r/min.
Step 5: aftertreatment comprises first time cooling, screening, seed dressing and coating step successively, wherein,
Described first time cooling refers to that it is 30 DEG C that the granular mixture through microwave drying is naturally cooled to temperature;
Described screening refers to carries out particle screen selecting by the granular mixture obtained after first time cooling by vibratory screening apparatus, and the aperture of described vibratory screening apparatus is 2.0mm*4.8mm;
Seed dressing, adds JT composite bacteria pulvis by the granular mixture after screening by above-mentioned weight part, is placed in cylinder coating machine and processes 2min;
Described coating refers to first by the surface of sodium nitrophenolate solution spray attachment to above-mentioned granular mixture; add in anti-hard caking agent to above-mentioned granular mixture to be placed in after cylinder coating machine processes 4min by above-mentioned weight part again and obtain nitrate-based compound fertilizer through second time cooling after second time microwave drying
Wherein said sodium nitrophenolate solution refers to that massfraction is the aqueous solution of 0.8%; In described second time microwave drying, arranging microwave power is 2W/g, and line speed is 350r/min; Described second time cooling refers to and the granular mixture after second time microwave drying is naturally cooled to temperature lower than 25 DEG C.
Embodiment 2:
The nitrate-based compound fertilizer being applicable to planting fruit trees of the present invention, comprises major ingredient and auxiliary material, and wherein major ingredient is made up of the following material with parts by weight: 35 parts, ammonium nitrate phosphorus, potassium sulfate 28 parts, 20 parts, saltpetre and monoammonium phosphate 18 parts; Described auxiliary material is made up of the following material with parts by weight: 5 parts, magnesium oxide, instant boron 3 parts, ferric oxide 5 parts, 3.5 parts, zinc sulfate, Sodium salts humic acids 8 parts, sodium nitrophenolate 0.08 part, 0.5 part, JT composite bacteria pulvis, urine base chelating ion calcium 0.3 part and anti-hard caking agent 1.3 parts.
Wherein, described anti-hard caking agent by massfraction be 68% activation tricalcium phosphate and massfraction be that 32% cats product forms.
The preparation method being applicable to the nitrate-based compound fertilizer of planting fruit trees of the present invention, comprises the following steps successively: the preparation of solid formulation, the preparation of half-stuff, granulation, microwave drying and aftertreatment,
The preparation of step one, solid formulation: potassium sulfate, saltpetre, monoammonium phosphate, magnesium oxide, instant boron, nitrocalcite, ferric oxide, zinc sulfate and Sodium salts humic acids are mixed by above-mentioned weight part, stirring and evenly mixing is placed in pulverizer and pulverizes, cross 40 mesh sieves, add by weight again after urine base chelating ion calcium mixes and obtain solid formulation, for subsequent use;
The preparation of step 2, half-stuff: ammonium nitrate phosphorus is added fusion tank by above-mentioned weight part, at 140 DEG C, melting 15min obtains half-stuff, for subsequent use.
Step 3, granulation: solid formulation is placed in roller pelletizer, then half-stuff is sprayed onto in the solid formulation in described roller pelletizer, after tumbling granulation 4min, obtain granular mixture;
Step 4, microwave drying: granular mixture granulation obtained is placed on tunnel type micro wave drying plant travelling belt and carries out drying, and arranging microwave power is 5W/g, and travelling belt transfer rate is 300r/min.
Step 5: aftertreatment comprises first time cooling, screening, seed dressing and coating step successively, wherein,
Described first time cooling refers to that it is 33 DEG C that the granular mixture through microwave drying is naturally cooled to temperature;
Described screening refers to carries out particle screen selecting by the granular mixture obtained after first time cooling by vibratory screening apparatus, and the aperture of described vibratory screening apparatus is 2.0mm*4.8mm;
Seed dressing, adds JT composite bacteria pulvis by the granular mixture after screening by above-mentioned weight part, is placed in cylinder coating machine and processes 3.5min;
Described coating refers to first by the surface of sodium nitrophenolate solution spray attachment to above-mentioned granular mixture; add in anti-hard caking agent to above-mentioned granular mixture to be placed in after cylinder coating machine processes 5min by above-mentioned weight part again and obtain nitrate-based compound fertilizer through second time cooling after second time microwave drying
Wherein said sodium nitrophenolate solution refers to that massfraction is the aqueous solution of 1.0%; In described second time microwave drying, arranging microwave power is 3W/g, and line speed is 420r/min; Described second time cooling refers to and the granular mixture after second time microwave drying is naturally cooled to temperature lower than 25 DEG C.
Embodiment 3:
The nitrate-based compound fertilizer being applicable to planting fruit trees of the present invention, comprises major ingredient and auxiliary material, and wherein major ingredient is made up of the following material with parts by weight: 40 parts, ammonium nitrate phosphorus, potassium sulfate 35 parts, 25 parts, saltpetre and monoammonium phosphate 25 parts; Described auxiliary material is made up of the following material with parts by weight: 7 parts, magnesium oxide, instant boron 4 parts, ferric oxide 7 parts, 5 parts, zinc sulfate, Sodium salts humic acids 12 parts, sodium nitrophenolate 0.1 part, 0.7 part, JT composite bacteria pulvis, urine base chelating ion calcium 0.5 part and anti-hard caking agent 2.0 parts.
Wherein, described anti-hard caking agent by massfraction be 75% activation tricalcium phosphate and massfraction be that 25% cats product forms.
The preparation method being applicable to the nitrate-based compound fertilizer of planting fruit trees of the present invention, comprises the following steps successively: the preparation of solid formulation, the preparation of half-stuff, granulation, microwave drying and aftertreatment,
The preparation of step one, solid formulation: potassium sulfate, saltpetre, monoammonium phosphate, magnesium oxide, instant boron, nitrocalcite, ferric oxide, zinc sulfate and Sodium salts humic acids are mixed by above-mentioned weight part, stirring and evenly mixing is placed in pulverizer and pulverizes, cross 40 mesh sieves, add by weight again after urine base chelating ion calcium mixes and obtain solid formulation, for subsequent use;
The preparation of step 2, half-stuff: ammonium nitrate phosphorus is added fusion tank by above-mentioned weight part, at 150 DEG C, melting 20min obtains half-stuff, for subsequent use.
Step 3, granulation: solid formulation is placed in roller pelletizer, then half-stuff is sprayed onto in the solid formulation in described roller pelletizer, after tumbling granulation 5min, obtain granular mixture;
Step 4, microwave drying: granular mixture granulation obtained is placed on tunnel type micro wave drying plant travelling belt and carries out drying, and arranging microwave power is 7W/g, and travelling belt transfer rate is 350r/min.
Step 5: aftertreatment comprises first time cooling, screening, seed dressing and coating step successively, wherein,
Described first time cooling refers to that it is 35 DEG C that the granular mixture through microwave drying is naturally cooled to temperature;
Described screening refers to carries out particle screen selecting by the granular mixture obtained after first time cooling by vibratory screening apparatus, and the aperture of described vibratory screening apparatus is 2.0mm*4.8mm;
Seed dressing, adds JT composite bacteria pulvis by the granular mixture after screening by above-mentioned weight part, is placed in cylinder coating machine and processes 5min;
Described coating refers to first by the surface of sodium nitrophenolate solution spray attachment to above-mentioned granular mixture; add in anti-hard caking agent to above-mentioned granular mixture to be placed in after cylinder coating machine processes 6min by above-mentioned weight part again and obtain nitrate-based compound fertilizer through second time cooling after second time microwave drying
Wherein said sodium nitrophenolate solution refers to that massfraction is the aqueous solution of 1.4%; In described second time microwave drying, arranging microwave power is 4W/g, and line speed is 500r/min; Described second time cooling refers to and the granular mixture after second time microwave drying is naturally cooled to temperature lower than 25 DEG C.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification sheets and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the embodiment described.
Claims (7)
1. be applicable to a nitrate-based compound fertilizer for planting fruit trees, it is characterized in that, comprise major ingredient and auxiliary material, wherein major ingredient is made up of the following material with parts by weight: ammonium nitrate phosphorus 30-40 part, potassium sulfate 20-35 part, saltpetre 15-25 part and monoammonium phosphate 10-25 part; Described auxiliary material is made up of the following material with parts by weight: magnesium oxide 3-7 part, instant boron 2-4 part, ferric oxide 3-7 part, zinc sulfate 2-5 part, Sodium salts humic acids 5-12 part, sodium nitrophenolate 0.05-0.1 part, JT composite bacteria pulvis 0.3-0.7 part, urine base chelating ion calcium 0.1-0.5 part and anti-hard caking agent 0.5-2.0 part.
2. be applicable to the nitrate-based compound fertilizer of planting fruit trees as claimed in claim 1, it is characterized in that, described anti-hard caking agent is the activation tricalcium phosphate of 60%-75% and massfraction by massfraction is that 25%-40% cats product forms.
3., as the preparation method being applicable to the nitrate-based compound fertilizer of planting fruit trees as described in arbitrary in claim 1 or 2, comprise the following steps successively: the preparation of solid formulation, the preparation of half-stuff, granulation, microwave drying and aftertreatment, is characterized in that,
Described granulation refers to and solid formulation is placed in roller pelletizer, then is sprayed onto by half-stuff in the solid formulation in described roller pelletizer, after tumbling granulation 3-5min, obtains granular mixture;
Described microwave drying refers to that granular mixture granulation obtained is placed on tunnel type micro wave drying plant travelling belt and carries out drying, and arranging microwave power is 3-7W/g, and travelling belt transfer rate is 250-350r/min.
4. be applicable to the preparation method of the nitrate-based compound fertilizer of planting fruit trees as claimed in claim 3; it is characterized in that; described aftertreatment comprises first time cooling, screening and coating step successively; wherein; described coating refers to first by the surface of sodium nitrophenolate solution spray attachment to above-mentioned granular mixture; add in anti-hard caking agent to above-mentioned granular mixture to be placed in after cylinder coating machine processes 4-6min by above-mentioned weight part again and obtain nitrate-based compound fertilizer through second time cooling after second time microwave drying
Wherein said sodium nitrophenolate solution refers to that massfraction is the aqueous solution of 0.8%-1.4%, and in described second time microwave drying, arranging microwave power is 2-4W/g, and line speed is 350-500r/min.
5. be applicable to the preparation method of the nitrate-based compound fertilizer of planting fruit trees as claimed in claim 4; it is characterized in that; dress seed before described coating, the granular mixture after screening is added JT composite bacteria pulvis by above-mentioned weight part, is placed in cylinder coating machine and processes 2-5min.
6. be applicable to the preparation method of the nitrate-based compound fertilizer of planting fruit trees as claimed in claim 5, it is characterized in that,
The preparation of described solid formulation refers to and potassium sulfate, saltpetre, monoammonium phosphate, magnesium oxide, instant boron, nitrocalcite, ferric oxide, zinc sulfate and Sodium salts humic acids to be mixed by above-mentioned weight part, stirring and evenly mixing is placed in pulverizer and pulverizes, cross 40 mesh sieves, add by weight again after urine base chelating ion calcium mixes and obtain solid formulation, for subsequent use;
The preparation of described half-stuff refers to, by above-mentioned weight part, ammonium nitrate phosphorus is added fusion tank, and at 130-150 DEG C, melting 10-20min obtains half-stuff, for subsequent use.
7. be applicable to the preparation method of the nitrate-based compound fertilizer of planting fruit trees as claimed in claim 6, it is characterized in that,
Described first time cooling refers to that it is 30-35 DEG C that the granular mixture through microwave drying is naturally cooled to temperature;
Described screening refers to carries out particle screen selecting by the granular mixture obtained after first time cooling by vibratory screening apparatus, and the aperture of described vibratory screening apparatus is 2.0mm*4.8mm;
Described second time cooling refers to and the granular mixture after second time microwave drying is naturally cooled to temperature lower than 25 DEG C.
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| CN109265235A (en) * | 2018-09-06 | 2019-01-25 | 广西桉盛丰肥业有限公司 | Special fertilizer with insecticidal activity |
| CN111039710A (en) * | 2018-10-11 | 2020-04-21 | 广西绿友农生物科技股份有限公司 | Microbial fertilizer for preventing and controlling citrus greening disease and preparation process thereof |
| CN111559932A (en) * | 2020-04-20 | 2020-08-21 | 杨新正 | Synergistic high-tower nitro-sulfenyl fertilizer and preparation method thereof |
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