CN104163729A - High-tower granulation compound fertilizer containing Gamma-polyglutamic acid as well as preparation method and application of high-tower granulation compound fertilizer containing Gamma-polyglutamic acid - Google Patents
High-tower granulation compound fertilizer containing Gamma-polyglutamic acid as well as preparation method and application of high-tower granulation compound fertilizer containing Gamma-polyglutamic acid Download PDFInfo
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Abstract
The invention discloses a preparation method of a high-tower granulation compound fertilizer containing gamma-polyglutamic acid. The preparation method comprises the step of producing urea-base compound fertilizer or nitrocompound fertilizer by virtue of high-tower granulation equipment. The preparation method is characterized in that the urea-base compound fertilizer containing gamma-polyglutamic acid or the nitrocompound fertilizer containing gamma-polyglutamic acid is prepared by adding raw material gamma-polyglutamic acid in one or a combination of more than two of four processes; the four processes refer to a raw material mixing process, a high-tower granulation process, a fertilizer granule cooling process and a finished product coating process. Compared with a common high-tower granulation compound fertilizer having no gamma-polyglutamic acid, the high-tower granulation compound fertilizer containing gamma-polyglutamic acid has the characteristics that the fertilizer utilization rate can be increased, the crop yield is effectively increased, the soil hardening caused by application of chemical fertilizer is effectively improved, and the soil environment cannot be polluted.
Description
Technical field
The present invention relates to fertilizer field, be specifically related to a kind of compound fertilizer production with tower granulation containing gamma-polyglutamic acid-and preparation method thereof and application.
Background technology
Chemical fertilizer is being brought into play more and more important effect in modern agricultural production.China is fertilizer application big country, and chemical fertilizer annual consumption is up to 5,000 ten thousand tons more than (pure nitrogen phosphorus potassium), for outstanding contributions have been made in agricultural development and increases in grain production.But the use of chemical fertilizer has also brought a lot of negative issues, the utilization ratio of fertilizer is low, the Quality Down in soil, and water pollutes, and degradation under cropper resistance, has threatened agriculture Sustainable development to a great extent.
Gamma-polyglutamic acid-is a kind of homogeneous polyamino acid being produced by microorganism fermentation.Based on its good biodegradability, water-absorbent, ion chelating ability, gamma-polyglutamic acid-has the potentiality of as fertilizer sources synergistic agent.Compound fertilizer production with tower granulation has the advantages such as nutrient is even, constant product quality, applicable coating again, but not yet has application high tower prilling mode to produce the report containing the composite fertilizer of gamma-polyglutamic acid-at present.
High tower prilling is produced high quality compound manure, have high in technological content, nutrient evenly, good water solubility and the feature such as use range is wide, performance is much better than other kind chemical fertilizer.The main flow process of compound fertilizer production by tower granulation is: by phosphate fertilizer after the urea of melting or ammonium nitrate and preheating, potash fertilizer and weighting agent (Paris white) mix in tempering tank according to certain part by weight, thing reaction to be mixed generates after the fertilizer slurry of good fluidity, spray into prilling tower by rotary differential shower nozzle, mixture is from high tower decline process, interact with the air resistance rising at the bottom of tower, carry out dropping to tower after heat exchange with it at the bottom of, and cooling curing becomes particle, then fertiliser granulates is transported into cooling tower further cooling, after cooling completing, finished particle enters coating machine after screening, spraying anti-hard caking agent carries out obtaining compound fertilizer production with tower granulation after anti-caking processing.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of compound fertilizer production with tower granulation containing gamma-polyglutamic acid-, to improve the utilization ratio of fertilizer.
The technical problem that the present invention also will solve is to provide the preparation method of the above-mentioned compound fertilizer production with tower granulation containing gamma-polyglutamic acid-.
The technical problem that the present invention finally will solve is to provide the application of the above-mentioned compound fertilizer production with tower granulation containing gamma-polyglutamic acid-.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of preparation method of the compound fertilizer production with tower granulation containing gamma-polyglutamic acid-, it comprises the operation of utilizing high tower prilling device fabrication urea-base compound fertilizer or nitro-compound fertilizer, by at one of following Four processes or wherein more than two add gamma-polyglutamic acid-raw material in the combination of process, prepare the urea-base compound fertilizer or the nitro-compound fertilizer that contain gamma-polyglutamic acid-;
Described Four processes is raw material mixing process, high tower prilling process, fertiliser granulates process of cooling and finished product coating process.
Above-mentioned urea-base compound fertilizer is the fertilizer that urea, phosphate fertilizer, potash fertilizer, synergistic agent and weighting agent are prepared from; Above-mentioned nitro-compound fertilizer is the fertilizer that ammonium nitrate, phosphate fertilizer, potash fertilizer, synergistic agent, weighting agent are prepared from.
Wherein, phosphate fertilizer provides compound or the composition of phosphorus element for monoammonium phosphate, diammonium phosphate, calcium superphosphate or other can be plant-growth, potash fertilizer provides compound or the composition of potassium element for Repone K, potassium sulfate or other can be plant-growth, synergistic agent is any one or a few the combination in sodium nitrophenolate, α-naphthaleneacidsodium and amine DA-6, and weighting agent is any one or a few the combination in tinting material, rhombspar, Paris white, attapulgite, kaolin and diatomite;
Urea or ammonium nitrate, with phosphate fertilizer, with the weight ratio of potash fertilizer be 32-45:28-40:15-40, the interpolation weight of synergistic agent is the 0-10% (preferably 2-10%) of urea or ammonium nitrate and phosphate fertilizer and potash fertilizer gross weight, and the interpolation weight of weighting agent is the 5-20% of urea or ammonium nitrate and phosphate fertilizer and potash fertilizer gross weight.
Above-mentioned gamma-polyglutamic acid-raw material is any one or a few the combination in gamma-polyglutamic acid-sterling, gamma-polyglutamic acid-salt sterling, the fermenting culture that comprises gamma-polyglutamic acid-, gamma-polyglutamic acid-solution and the pulvis that contains gamma-polyglutamic acid-; The consumption of gamma-polyglutamic acid-raw material is in wherein contained gamma-polyglutamic acid-, and its addition is 0.02 ‰-3 ‰ of composite fertilizer's weight; The molecular weight ranges of gamma-polyglutamic acid-is 5～3000kDa.
Gamma-polyglutamic acid-salt sterling the has comprised chelating polyglutamate of one or more elements such as Na, K, Ca, Mn, Cu, Zn, Fe.
Gamma-polyglutamic acid-solution comprises the aqueous solution of polyglutamic acid gel solution, polyglutamic acid or polyglutamate sterling.
The pulvis that contains gamma-polyglutamic acid-comprises the dry thing of the powdery of polyglutamic acid fermented liquid, polyglutamic acid sterling or polyglutamate sterling and the formulated combination pulvis of other adjunct ingredients.
The fermenting culture that comprises gamma-polyglutamic acid-comprises that including polyglutamic acid produces bacterial strain and the polyglutamic acid fermented liquid of fermention medium, concentrated solution or the dry thing of polyglutamic acid fermented liquid.
The molecular weight ranges of preferred gamma-polyglutamic acid-is 10-2000kDa, and wherein most preferred molecular weight ranges is 100-1000kDa.
The above-mentioned operation of utilizing high tower prilling device fabrication urea-base compound fertilizer or nitro-compound fertilizer comprises the steps:
(1) raw material mixing process: the powdery phosphate fertilizer after preheating, potash fertilizer, weighting agent are mixed in tempering tank with fusing urea or ammonium nitrate, and reaction generates fertilizer slurry;
(2) high tower prilling process: the fertilizer slurry that step (1) is obtained sprays into after prilling tower by rotary differential shower nozzle, and cooling curing becomes fertiliser granulates in air;
(3) fertiliser granulates process of cooling: it is cooling that the fertiliser granulates that step (2) is obtained is delivered into cooling tower;
(4) finished product coating process: the fertiliser granulates obtaining after the cooling end of step (3) is delivered to coating machine, through anti-caking agent coating, obtains compound fertilizer production with tower granulation;
Wherein, the temperature of preheating is 60 DEG C-90 DEG C;
Wherein, the temperature of melting is 115 DEG C-150 DEG C;
Wherein, described anti-caking agent is one or more in zeolite powder, diatomite, talcum powder, Wingdale, silicon dioxide powder and clay.
Being chosen in the method for adding gamma-polyglutamic acid-raw material in raw material mixing process is: in step (1), utilize fusing urea or ammonium nitrate can form with phosphate fertilizer, potash fertilizer, synergistic agent, gamma-polyglutamic acid-and weighting agent the feature of eutectoid point compound, the powdery phosphate fertilizer after preheating, potash fertilizer, gamma-polyglutamic acid-raw material, weighting agent are mixed in tempering tank with fusing urea or ammonium nitrate; All the other steps with utilize the operation of high tower prilling device fabrication urea-base compound fertilizer or nitro-compound fertilizer identical.
Being chosen in the method for adding gamma-polyglutamic acid-raw material in high tower prilling process is: in step (2), fertilizer slurry sprays into prilling tower by rotary differential shower nozzle, to after gamma-polyglutamic acid-atomizing raw materials, spray into prilling tower by the atomizer on prilling tower inwall, be attached on fertiliser granulates, form coating; All the other steps with utilize the operation of high tower prilling device fabrication urea-base compound fertilizer or nitro-compound fertilizer identical.
Being chosen in the method for adding gamma-polyglutamic acid-raw material in fertiliser granulates process of cooling is: in step (3), fertiliser granulates is delivered into cooling tower cooling, by the atomizer in the cooling storehouse of cooling tower, to after gamma-polyglutamic acid-atomizing raw materials, evenly be sprayed on fertiliser granulates surface, form coating; All the other steps with utilize the operation of high tower prilling device fabrication urea-base compound fertilizer or nitro-compound fertilizer identical.
Being chosen in the method for adding gamma-polyglutamic acid-raw material in finished product coating process is: in step (4), the fertiliser granulates obtaining after cooling end is delivered to coating machine, atomizer by coating machine leading portion will evenly be sprayed to fertiliser granulates surface after gamma-polyglutamic acid-atomizing raw materials, then sprays anti-caking agent to compound fertilizer granules surface at coating machine end; All the other steps with utilize the operation of high tower prilling device fabrication urea-base compound fertilizer or nitro-compound fertilizer identical.
The compound fertilizer production with tower granulation containing gamma-polyglutamic acid-that above-mentioned preparation method prepares is also within protection scope of the present invention.
The application of the above-mentioned compound fertilizer production with tower granulation containing gamma-polyglutamic acid-in farm crop produce is also within protection scope of the present invention.
Concrete application method is, in agriculture production, can be used as base fertilising, dressing fertilizer, cave-applied fertilizer use containing the compound fertilizer production with tower granulation of gamma-polyglutamic acid-, be applicable to food crop as wheat, corn, paddy rice etc., be also applicable to cash crop as tomato, potato, grape, soybean etc.
Preferably, the urea of melting (130-140 DEG C) is mixed according to parts by weight ratio 35:35:30:5:0.05:15 with monoammonium phosphate, potassium sulfate, synergistic agent, gamma-polyglutamic acid-pulvis and the weighting agent (Paris white) of (preheating temperature is 60-70 DEG C) after preheating, adopt the mode of adding gamma-polyglutamic acid-raw material in raw material mixing process, prepare the high tower urea-based compound fertilizer containing gamma-polyglutamic acid-, as cauline leaf class fertilizer special for vegetable.
Preferably, the ammonium nitrate of melting (140-145 DEG C) is mixed according to part by weight 38:35:27:5:15 with monoammonium phosphate, potassium sulfate, synergistic agent and the weighting agent (Paris white) of (preheating temperature is 60-70 DEG C) after preheating, adopt the mode of adding gamma-polyglutamic acid-raw material in high tower prilling process, prepare the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-, as melon or fruit type crops special fertilizer.
Preferably, the urea of melting (130-140 DEG C) is mixed according to part by weight 35:35:30:4:15 with monoammonium phosphate, Repone K, synergistic agent and the weighting agent (Paris white) of (preheating temperature is 60-70 DEG C) after preheating, adopt the mode of adding gamma-polyglutamic acid-raw material in finished product coating process, prepare the high tower urea-based coated compound fertilizer containing gamma-polyglutamic acid-, as food crop special fertilizer.
Beneficial effect: compared with prior art, the present invention has following advantage:
(1) in the present invention, there is certain slow releasing function containing the compound fertilizer production with tower granulation of gamma-polyglutamic acid-, can extend fertilizer time of releasing, improve utilization rate of fertilizer.
(2) can regulating crop growth containing the gamma-polyglutamic acid-in the compound fertilizer production with tower granulation of gamma-polyglutamic acid-in the present invention, strengthen crop anti-adversity, effectively improve crop yield.
(3) in the present invention, can improve edaphon state containing the gamma-polyglutamic acid-in the compound fertilizer production with tower granulation of gamma-polyglutamic acid-, increase diversity of soil microorganism, can effectively improve the soil compaction that chemical fertilizer application causes.
(4) in the present invention, be a kind of biofermentation products containing the gamma-polyglutamic acid-in the compound fertilizer production with tower granulation of gamma-polyglutamic acid-, in soil, can be biodegradable completely, to human body and soil organisms toxicological harmless, pollution-free to edatope.
Embodiment
According to following embodiment, the present invention may be better understood.But, those skilled in the art will readily understand, the described content of embodiment is only for the present invention is described, and should also can not limit the present invention described in detail in claims.
Embodiment 1: prepare in accordance with the following steps the high tower urea-based compound fertilizer containing gamma-polyglutamic acid-of the present invention, this composite fertilizer can be used as cauline leaf class fertilizer special for vegetable.
By the monoammonium phosphate of (preheating temperature is 60-70 DEG C) after the urea of melting (130-140 DEG C) and preheating, potassium sulfate, synergistic agent (sodium nitrophenolate and α-naphthaleneacidsodium are pressed 1:1 preparation), gamma-polyglutamic acid-pulvis and weighting agent (Paris white) mix in tempering tank according to ratio of weight and number 35:35:30:5:0.05:15, thing reaction to be mixed generates after the fertilizer slurry of good fluidity, spray into prilling tower by rotary differential shower nozzle, in air, cooling curing becomes particle, then be delivered into cooling tower further cooling, after cooling completing, finished particle enters coating machine after screening, spraying anti-hard caking agent carries out obtaining the described compound fertilizer production with tower granulation containing gamma-polyglutamic acid-after anti-caking processing.In the present embodiment, the molecular weight of gamma-polyglutamic acid-used is 10～500kDa.
For investigating the fertilizer efficiency that contains the high tower urea-based compound fertilizer of gamma-polyglutamic acid-in the present invention, contriver with the common urea-base compound fertilizer that do not add gamma-polyglutamic acid-(except not adding gamma-polyglutamic acid-, all the other component proportionss are all identical with the high tower urea-based compound fertilizer containing gamma-polyglutamic acid-of the present invention) be contrast fertilizer, carry out fertilizer efficiency and investigated test.Test design 3 processing, processing 1 is common urea-base compound fertilizer, processing 2 is the high tower urea-based compound fertilizer containing gamma-polyglutamic acid-in the present embodiment, and processing 3 is also the high tower urea-based compound fertilizer containing gamma-polyglutamic acid-in the present embodiment, but usage quantity reduces 15% than processing 2.
Table 1 is potted plant Plantula Brassicae chinensis test
The impact of table 1 different composite fertilizer on Plantula Brassicae chinensis chlorophyll and output
Note: numeric representation is mean+SD, shows significant difference (P<0.05) with different lowercase alphabets after column data
Table 2 is the lettuce test of community, field
The impact of table 2 different composite fertilizer on lettuce plant height and output
Note: numeric representation is mean+SD, shows significant difference (P<0.05) with different lowercase alphabets after column data
Table 1,2 result show, compared with common high tower urea-based compound fertilizer, can significantly improve fresh weight and the plant height of Plantula Brassicae chinensis over-ground part fresh weight and lettuce containing the high tower urea-based compound fertilizer of gamma-polyglutamic acid-, even in the situation that fertilizer nutrient reduces 15%, also can promote Plantula Brassicae chinensis and lettuce volume increase, above data show, the high tower urea-based compound fertilizer action effect on stem leafy vegetable containing gamma-polyglutamic acid-in the present invention is remarkable.
Embodiment 2: prepare in accordance with the following steps the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-of the present invention, composite fertilizer of the present invention can be used as fruits Special Fertilizers for Various Crops.
By the monoammonium phosphate of (preheating temperature is 60-70 DEG C) after the ammonium nitrate of melting (140-145 DEG C) and preheating, potassium sulfate, and weighting agent (Paris white) mixes in tempering tank according to predefined part by weight 38:35:27:15, thing reaction to be mixed generates after the fertilizer slurry of good fluidity, spray into prilling tower by rotary differential shower nozzle, now will after gamma-polyglutamic acid-atomization, spray into prilling tower, the direction of gamma-polyglutamic acid-ejection is vertical with the direction of fertilizer landing, become after particle until fertiliser granulates cooling curing in air, gamma-polyglutamic acid-forms one deck coating on fertiliser granulates surface, gamma-polyglutamic acid-addition is 1 ‰ of fertiliser granulates quality, then fertiliser granulates is transported into cooling tower further cooling, after cooling completing, finished particle enters coating machine after screening, spraying anti-hard caking agent carries out obtaining the described compound fertilizer production with tower granulation containing gamma-polyglutamic acid-after anti-caking processing.In the present embodiment, the molecular weight of gamma-polyglutamic acid-used is 500～2000kDa.
For investigating the fertilizer efficiency of the present invention containing the high tower nitro coated compound fertilizer of gamma-polyglutamic acid-, contriver with the common nitro-compound fertilizer that do not add gamma-polyglutamic acid-(except not adding gamma-polyglutamic acid-, all the other component proportionss are all identical with the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-of the present invention) be contrast fertilizer, carry out fertilizer efficiency and investigated test.Test design 3 processing, processing 1 is common nitro-compound fertilizer, processing 2 is the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-in the present embodiment, and processing 3 is also the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-in the present embodiment, but usage quantity reduces 10% than processing 2.Apply fertilizer as base using test fertilizer, do not topdress.
Table 3 is the muskmelon test of community, field, applies fertilizer as base to test fertilizer, does not topdress, and investigates yield and quality after muskmelon is gathered.
The impact of table 3 different composite fertilizer on muskmelon output and quality
Note: numeric representation is mean+SD, shows significant difference (P<0.05) with different lowercase alphabets after column data
Table 4 is community, field grape experiment, applies fertilizer as base to test fertilizer, does not topdress, and investigates yield and quality after grape is gathered.
The impact of table 4 different composite fertilizer on vintage and quality
Note: numeric representation is mean+SD, shows significant difference (P<0.05) with different lowercase alphabets after column data
Table 3,4 result show, with common high tower nitro-compound fertilizer contrast, the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-in the present invention has significantly improved output, the Vc content of muskmelon, and obviously reduce the nitrate content in muskmelon, the output of grape and the sugared content of grape are significantly improved, even in the situation that fertilizer nutrient reduces 10%, also can promote muskmelon and grape yield increasing and quality improving.Test-results shows, the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-in the present invention not only has outstanding effect of increasing production to melon or fruit type crops, and can also significantly improve melon and fruit quality.
Embodiment 3: prepare in accordance with the following steps the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-of the present invention, composite fertilizer of the present invention can be used as result class fertilizer special for vegetable.In the present embodiment, the molecular weight of gamma-polyglutamic acid-used is 500～2000kDa
By the monoammonium phosphate of (preheating temperature is 60-70 DEG C) after the ammonium nitrate of melting (140-145 DEG C) and preheating, potassium sulfate, synergistic agent (sodium nitrophenolate and α-naphthaleneacidsodium are by 1:1 preparation) and weighting agent (Paris white) mix in tempering tank according to predefined part by weight 38:35:27:5:15, thing reaction to be mixed generates after the fertilizer slurry of good fluidity, spray into prilling tower by rotary differential shower nozzle, become after particle until fertiliser granulates cooling curing in air, fertiliser granulates is delivered into cooling tower, by the atomizer in the cooling storehouse of cooling tower, fertiliser granulates surface will be evenly sprayed on after gamma-polyglutamic acid-atomizing raw materials, form coating, gamma-polyglutamic acid-addition is 1 ‰ of fertiliser granulates quality, finished particle enters coating machine after screening, spraying anti-hard caking agent carries out obtaining the described high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-after anti-caking processing.
For investigating the fertilizer efficiency of the present invention containing the high tower nitro coated compound fertilizer of gamma-polyglutamic acid-, contriver with the common nitro-compound fertilizer that do not add gamma-polyglutamic acid-(except not adding gamma-polyglutamic acid-, all the other component proportionss are all identical with the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-of the present invention) be contrast fertilizer, carry out fertilizer efficiency and investigated test.Test design 3 processing, processing 1 is common nitro-compound fertilizer, processing 2 is the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-in the present embodiment, and processing 3 is also the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-in the present embodiment, but usage quantity reduces 10% than processing 2.Apply fertilizer as base using test fertilizer, do not topdress.
Table 5 is greenhouse pot culture cucumber test, applies fertilizer as base to test fertilizer, does not topdress, and investigates yield and quality after cucumber is gathered.
The impact of table 5 different composite fertilizer on cucumber yield and quality
Note: numeric representation is mean+SD, shows significant difference (P<0.05) with different lowercase alphabets after column data
The result of table 5 shows, with common high tower nitro-compound fertilizer contrast, the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-in the present invention has significantly improved output, Vc content, the soluble sugar content of cucumber, and obviously reduced the nitrate content in cucumber, promote cucumber production promoting and quality improving.Test-results shows, the high tower nitro coated compound fertilizer containing gamma-polyglutamic acid-in the present invention not only has outstanding effect of increasing production to result class class vegetables, and can also significantly improve melon and fruit quality.
Embodiment 4: prepare in accordance with the following steps the high tower urea-based coated compound fertilizer containing gamma-polyglutamic acid-of the present invention.Composite fertilizer of the present invention can be used as food crop special fertilizer.In the present embodiment, the molecular weight of gamma-polyglutamic acid-used is 500～2000kDa.
By the monoammonium phosphate of (preheating temperature is 60-70 DEG C) after the urea of melting (130-140 DEG C) and preheating, Repone K, synergistic agent (sodium nitrophenolate and α-naphthaleneacidsodium are by 1:1 preparation) and weighting agent (Paris white) mix in tempering tank according to predefined part by weight 35:35:30:4:15, thing reaction to be mixed generates after the fertilizer slurry of good fluidity, spray into prilling tower by rotary differential shower nozzle, become after particle until fertiliser granulates cooling curing in air, then fertiliser granulates is transported into cooling tower further cooling, after cooling completing, be delivered to coating machine, gamma-polyglutamic acid-is evenly sprayed to compound fertilizer granules surface after the atomization of coating machine leading portion, sprinkling amount is 2.5 ‰ of fertiliser granulates quality, again at coating machine end sprinkling powder powder anti-hard caking agent to compound fertilizer granules surface, thereby obtain the compound fertilizer granules that contains gamma-polyglutamic acid-.
For investigating the utilization rate of fertilizer of the present invention containing the high tower urea-based coated compound fertilizer of gamma-polyglutamic acid-, contriver with the common urea-base compound fertilizer that do not add gamma-polyglutamic acid-(except not adding gamma-polyglutamic acid-, all the other component proportionss are all identical with the high tower urea-based coated compound fertilizer containing gamma-polyglutamic acid-of the present invention) be contrast fertilizer, carry out utilization rate of fertilizer and investigated test, relatively the utilization ratio of different fertilizer.Test design 3 processing, process 1 for not applying fertilizer, process 2 for using common urea-base compound fertilizer, processing 3 is the high tower urea-based coated compound fertilizer that contains gamma-polyglutamic acid-in the present embodiment.
Table 6 is potted plant wheat test, by Plant nitrogen absorption amount after contrast harvesting wheat and the front nitrogenous fertilizer sowing amount of sowing, calculates the utilization rate of nitrogen fertilizer of different fertilizer, and test-results is as follows:
The impact of table 6 different composite fertilizer on potted plant wheat yield and utilization rate of nitrogen fertilizer
Note: numeric representation is mean+SD, shows significant difference (P<0.05) with different lowercase alphabets after column data
Table 7 is corn plot experiment, by the absorbing state of N, P, K after contrast corn maturation, calculates the utilization rate of nitrogen fertilizer of different fertilizer, and test-results is as follows:
Table 7
Note: numeric representation is mean+SD, shows significant difference (P<0.05) with different lowercase alphabets after column data
Table 6,7 data show, in the present invention containing the utilization rate of fertilizer of the high tower urea-based coated compound fertilizer of gamma-polyglutamic acid-compared with common urea-base compound fertilizer, potted plant wheat utilization rate of nitrogen fertilizer is improved to 17.3%, the utilization ratio of corn N, P, K has been improved respectively to 25.5%, 12.1%, 31.0%.Therefore in the present invention, can significantly promote food crop volume increase containing the high tower urea-based coated compound fertilizer of gamma-polyglutamic acid-, improve utilization rate of fertilizer.
Claims (10)
1. the preparation method containing the compound fertilizer production with tower granulation of gamma-polyglutamic acid-, it comprises the operation of utilizing high tower prilling device fabrication urea-base compound fertilizer or nitro-compound fertilizer, it is characterized in that, by at one of following Four processes or wherein more than two add gamma-polyglutamic acid-raw material in the combination of process, prepare the urea-base compound fertilizer or the nitro-compound fertilizer that contain gamma-polyglutamic acid-;
Described Four processes is raw material mixing process, high tower prilling process, fertiliser granulates process of cooling and finished product coating process.
2. the preparation method of the compound fertilizer production with tower granulation containing gamma-polyglutamic acid-according to claim 1, is characterized in that, described urea-base compound fertilizer is the fertilizer that urea, phosphate fertilizer, potash fertilizer, synergistic agent and weighting agent are prepared from; Described nitro-compound fertilizer is the fertilizer that ammonium nitrate, phosphate fertilizer, potash fertilizer, synergistic agent, weighting agent are prepared from;
Wherein, phosphate fertilizer provides compound or the composition of phosphorus element for monoammonium phosphate, diammonium phosphate, calcium superphosphate or other can be plant-growth, potash fertilizer provides compound or the composition of potassium element for Repone K, potassium sulfate or other can be plant-growth, synergistic agent is any one or a few the combination in sodium nitrophenolate, α-naphthaleneacidsodium and amine DA-6, and weighting agent is any one or a few the combination in tinting material, rhombspar, Paris white, attapulgite, kaolin and diatomite;
Urea or ammonium nitrate, with phosphate fertilizer, with the weight ratio of potash fertilizer be 32-45:28-40:15-40, the interpolation weight of synergistic agent is the 0-10% of urea or ammonium nitrate and phosphate fertilizer and potash fertilizer gross weight, and the interpolation weight of weighting agent is the 5-20% of urea or ammonium nitrate and phosphate fertilizer and potash fertilizer gross weight.
3. the preparation method of the compound fertilizer production with tower granulation containing gamma-polyglutamic acid-according to claim 1, it is characterized in that, described gamma-polyglutamic acid-raw material is any one or a few the combination in gamma-polyglutamic acid-sterling, gamma-polyglutamic acid-salt sterling, the fermenting culture that comprises gamma-polyglutamic acid-, gamma-polyglutamic acid-solution and the pulvis that contains gamma-polyglutamic acid-; The consumption of gamma-polyglutamic acid-raw material is in wherein contained gamma-polyglutamic acid-, and its addition is 0.02 ‰-3 ‰ of composite fertilizer's weight; The molecular weight ranges of gamma-polyglutamic acid-is 5～3000kDa.
4. the preparation method of the compound fertilizer production with tower granulation containing gamma-polyglutamic acid-according to claim 1, is characterized in that, the described operation of utilizing high tower prilling device fabrication urea-base compound fertilizer or nitro-compound fertilizer comprises the steps:
(1) raw material mixing process: the powdery phosphate fertilizer after preheating, potash fertilizer, weighting agent are mixed in tempering tank with fusing urea or ammonium nitrate, and reaction generates fertilizer slurry;
(2) high tower prilling process: the fertilizer slurry that step (1) is obtained sprays into after prilling tower by rotary differential shower nozzle, and cooling curing becomes fertiliser granulates in air;
(3) fertiliser granulates process of cooling: it is cooling that the fertiliser granulates that step (2) is obtained is delivered into cooling tower;
(4) finished product coating process: the fertiliser granulates obtaining after the cooling end of step (3) is delivered to coating machine, through anti-caking agent coating, obtains compound fertilizer production with tower granulation;
Wherein, the temperature of preheating is 60 DEG C-90 DEG C;
Wherein, the temperature of melting is 115 DEG C-150 DEG C;
Wherein, described anti-caking agent is one or more in zeolite powder, diatomite, talcum powder, Wingdale, silicon dioxide powder and clay.
5. the preparation method of the compound fertilizer production with tower granulation containing gamma-polyglutamic acid-according to claim 4, it is characterized in that, the method of adding gamma-polyglutamic acid-raw material in raw material mixing process is: in step (1), the powdery phosphate fertilizer after preheating, potash fertilizer, gamma-polyglutamic acid-raw material, weighting agent are mixed in tempering tank with fusing urea or ammonium nitrate.
6. the preparation method of the compound fertilizer production with tower granulation containing gamma-polyglutamic acid-according to claim 4, it is characterized in that, the method of adding gamma-polyglutamic acid-raw material in high tower prilling process is: in step (2), fertilizer slurry sprays into prilling tower by rotary differential shower nozzle, to after gamma-polyglutamic acid-atomizing raw materials, spray into prilling tower by the atomizer on prilling tower inwall, be attached on fertiliser granulates, form coating.
7. the preparation method of the compound fertilizer production with tower granulation containing gamma-polyglutamic acid-according to claim 4, it is characterized in that, the method of adding gamma-polyglutamic acid-raw material in fertiliser granulates process of cooling is: in step (3), fertiliser granulates is delivered into cooling tower cooling, by the atomizer in the cooling storehouse of cooling tower, to after gamma-polyglutamic acid-atomizing raw materials, evenly be sprayed on fertiliser granulates surface, form coating.
8. the preparation method of the compound fertilizer production with tower granulation containing gamma-polyglutamic acid-according to claim 4, it is characterized in that, the method of adding gamma-polyglutamic acid-raw material in finished product coating process is: in step (4), the fertiliser granulates obtaining after cooling end is delivered to coating machine, atomizer by coating machine leading portion will evenly be sprayed to fertiliser granulates surface after gamma-polyglutamic acid-atomizing raw materials, then sprays anti-caking agent to compound fertilizer granules surface at coating machine end.
9. the compound fertilizer production with tower granulation containing gamma-polyglutamic acid-that in claim 1～8, the preparation method described in any one prepares.
10. the application of the compound fertilizer production with tower granulation containing gamma-polyglutamic acid-claimed in claim 9 in farm crop produce.
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| CN104496696A (en) * | 2014-12-31 | 2015-04-08 | 深圳市芭田生态工程股份有限公司 | Medium element calcium fertilizer for preventing physiological diseases and preparation method of medium element calcium fertilizer |
| CN104761411A (en) * | 2015-03-21 | 2015-07-08 | 史丹利化肥股份有限公司 | Garlic fertilizer by tower-type melt granulation and preparation method hereof |
| CN105272760A (en) * | 2015-11-13 | 2016-01-27 | 金正大诺泰尔化学有限公司 | Special alkaline rice fertilizer capable of modifying soil persistently and production process thereof |
| CN105481600A (en) * | 2015-12-23 | 2016-04-13 | 安徽省司尔特肥业股份有限公司 | Water-soluble fertilizer capable of enhancing disease and pest resistance of potatoes and application method thereof |
| US20160309716A1 (en) * | 2014-04-22 | 2016-10-27 | The Unites States Of America As Represented By The Secretary Of The Navy | Insect Control Formulation with Improved Autodissemination Characteristics |
| CN107500830A (en) * | 2017-09-27 | 2017-12-22 | 江苏省农业科学院 | A kind of glutamic acid type special fertilizer for sweet potato and preparation method thereof |
| CN107641045A (en) * | 2016-07-20 | 2018-01-30 | 南京轩凯生物科技有限公司 | A kind of composite synergist and its application containing polyglutamic acid and potassium fulvate |
| CN108059534A (en) * | 2017-12-29 | 2018-05-22 | 广东拉多美化肥有限公司 | A kind of preparation method of polyglutamic acid coated compound fertilizer |
| CN108059537A (en) * | 2017-12-29 | 2018-05-22 | 广东拉多美化肥有限公司 | A kind of coated compound fertilizer |
| CN108218616A (en) * | 2017-12-29 | 2018-06-29 | 广东拉多美化肥有限公司 | A kind of polyglutamic acid coated compound fertilizer |
| CN109320370A (en) * | 2017-07-31 | 2019-02-12 | 山东红日化工股份有限公司 | One kind containing organic acidotrophic functional compound fertilizer and preparation method thereof |
| CN111777459A (en) * | 2020-07-28 | 2020-10-16 | 南京轩凯生物科技有限公司 | Composite synergist and preparation method and application thereof |
| CN111825499A (en) * | 2020-07-28 | 2020-10-27 | 南京轩凯生物科技有限公司 | High-tower granulated compound fertilizer and preparation method thereof |
| CN112661574A (en) * | 2021-02-04 | 2021-04-16 | 赤天化科技集团有限公司 | High-tower pesticide-fertilizer containing clothianidin and dinotefuran and preparation method thereof |
| WO2021128403A1 (en) * | 2019-12-27 | 2021-07-01 | 浙江世佳科技股份有限公司 | Fulvic acid type compound fertilizer, preparation method therefor and application thereof |
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| CN104496696A (en) * | 2014-12-31 | 2015-04-08 | 深圳市芭田生态工程股份有限公司 | Medium element calcium fertilizer for preventing physiological diseases and preparation method of medium element calcium fertilizer |
| CN104761411A (en) * | 2015-03-21 | 2015-07-08 | 史丹利化肥股份有限公司 | Garlic fertilizer by tower-type melt granulation and preparation method hereof |
| CN105272760A (en) * | 2015-11-13 | 2016-01-27 | 金正大诺泰尔化学有限公司 | Special alkaline rice fertilizer capable of modifying soil persistently and production process thereof |
| CN105481600A (en) * | 2015-12-23 | 2016-04-13 | 安徽省司尔特肥业股份有限公司 | Water-soluble fertilizer capable of enhancing disease and pest resistance of potatoes and application method thereof |
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| CN109320370A (en) * | 2017-07-31 | 2019-02-12 | 山东红日化工股份有限公司 | One kind containing organic acidotrophic functional compound fertilizer and preparation method thereof |
| CN107500830A (en) * | 2017-09-27 | 2017-12-22 | 江苏省农业科学院 | A kind of glutamic acid type special fertilizer for sweet potato and preparation method thereof |
| CN108059534A (en) * | 2017-12-29 | 2018-05-22 | 广东拉多美化肥有限公司 | A kind of preparation method of polyglutamic acid coated compound fertilizer |
| CN108059537A (en) * | 2017-12-29 | 2018-05-22 | 广东拉多美化肥有限公司 | A kind of coated compound fertilizer |
| CN108218616A (en) * | 2017-12-29 | 2018-06-29 | 广东拉多美化肥有限公司 | A kind of polyglutamic acid coated compound fertilizer |
| WO2021128403A1 (en) * | 2019-12-27 | 2021-07-01 | 浙江世佳科技股份有限公司 | Fulvic acid type compound fertilizer, preparation method therefor and application thereof |
| CN111777459A (en) * | 2020-07-28 | 2020-10-16 | 南京轩凯生物科技有限公司 | Composite synergist and preparation method and application thereof |
| CN111825499A (en) * | 2020-07-28 | 2020-10-27 | 南京轩凯生物科技有限公司 | High-tower granulated compound fertilizer and preparation method thereof |
| CN112661574A (en) * | 2021-02-04 | 2021-04-16 | 赤天化科技集团有限公司 | High-tower pesticide-fertilizer containing clothianidin and dinotefuran and preparation method thereof |
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