CN108658680B - Special leaf fertilizer for rice tillering for unmanned aerial vehicle flight control and preparation method thereof - Google Patents
Special leaf fertilizer for rice tillering for unmanned aerial vehicle flight control and preparation method thereof Download PDFInfo
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- CN108658680B CN108658680B CN201810859406.3A CN201810859406A CN108658680B CN 108658680 B CN108658680 B CN 108658680B CN 201810859406 A CN201810859406 A CN 201810859406A CN 108658680 B CN108658680 B CN 108658680B
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Abstract
The invention discloses a special foliar fertilizer for rice tillering for unmanned aerial vehicle flight control and a preparation method thereof, wherein the special foliar fertilizer for rice tillering for unmanned aerial vehicle flight control comprises the following components in parts by weight: 600-1100 parts of base fertilizer, 18.5-22.2 parts of trace element fertilizer, 1-2 parts of auxiliary agent and 1-2 parts of pH regulator. The special foliar fertilizer for rice tillering for unmanned aerial vehicle flight control provided by the invention comprises a macroelement fertilizer, a trace element fertilizer, an auxiliary agent and the like, wherein a base fertilizer is taken as the macroelement fertilizer, and the trace element fertilizer is attached to the base fertilizer, so that the auxiliary agent is increased to promote the absorption of crops on the fertilizer, the spraying operation of the unmanned aerial vehicle is facilitated, the nutrition of the fertilizer is more comprehensive, and the special foliar fertilizer is suitable for the growth nutrition requirements of the crops at the rice tillering stage.
Description
Technical Field
The invention relates to the technical field of rice fertilizers, in particular to a special leaf fertilizer for rice tillering for unmanned aerial vehicle flight control and a preparation method thereof.
Background
The rice tillering stage is an important stage of rice growth, the rice needs a large amount of nutrients in the stage, the traditional method is to use a mode of spraying a foliar fertilizer by an artificial sprayer to fertilize the rice, the traditional foliar fertilizer has single nutrient, inconsistent fertilizer particles, slow dissolving speed and insufficient dissolving, and is not suitable for a mode of spraying fertilizer by an agricultural unmanned aerial vehicle in novel agricultural production.
Disclosure of Invention
The invention mainly aims to provide a leaf fertilizer special for rice tillering and used for unmanned aerial vehicle flight control and a preparation method thereof, aiming at obtaining a leaf fertilizer which has better physicochemical properties and is suitable for a rice tillering stage so as to be suitable for unmanned aerial vehicle flight control operation.
In order to achieve the purpose, the invention provides a special leaf fertilizer for rice tillering for unmanned aerial vehicle flight control, which comprises the following components in parts by weight:
600-1100 parts of base fertilizer, 18.5-22.2 parts of trace element fertilizer, 1-2 parts of auxiliary agent and 1-2 parts of pH regulator.
Preferably, the base fertilizer comprises at least two of nitrogen, phosphorus and potassium nutrients; and/or the presence of a gas in the gas,
the base fertilizer comprises a nitrogen fertilizer, a phosphate fertilizer and a potassium fertilizer, wherein the content ratio of nitrogen to phosphorus pentoxide to potassium oxide is (2-4) to 1 (6-8).
Preferably, the base fertilizer comprises the following components in parts by weight:
200-400 parts of potassium formate, 200-400 parts of potassium nitrate, 150-200 parts of urea and 50-150 parts of ammonium polyphosphate.
Preferably, the trace elements in the trace element fertilizer comprise at least one of zinc, boron, iron, manganese and copper; and/or the presence of a gas in the gas,
the trace element fertilizer comprises the following components in parts by weight: 3-3.5 parts of chelated zinc, 8-9 parts of chelated boron, 5-6 parts of chelated iron, 2-3 parts of chelated manganese and 0.5-0.7 part of chelated copper.
Preferably, the auxiliary agent is at least one of ethoxy modified polytrisiloxane, glycerol, polyglutamic acid and sugar chain plant vaccine; alternatively, the first and second electrodes may be,
the pH regulator comprises a citric acid solution and a potassium hydroxide solution.
The invention also provides a preparation method of the leaf fertilizer special for rice tillering and used for unmanned aerial vehicle flight control, which comprises the following steps:
preparing base fertilizer, trace element fertilizer, auxiliary agent and pH regulator in parts by weight;
mixing a base fertilizer, a trace element fertilizer and an auxiliary agent, and adding a pH regulator to regulate the solution to be neutral to prepare a fertilizer solution;
filtering the fertilizer solution, and spray drying to obtain fertilizer powder.
Preferably, the base fertilizer comprises potassium formate, potassium nitrate, urea and ammonium polyphosphate;
the method comprises the following steps of mixing a base fertilizer, a trace element fertilizer and an auxiliary agent, adding a pH regulator to regulate the pH regulator to be neutral, and preparing a fertilizer solution:
mixing potassium formate and potassium nitrate, and stirring for a first time to form a first mixed solution;
dissolving urea with water, mixing the urea with the first mixed solution, and stirring for a second time to form a second mixed solution;
dissolving ammonium polyphosphate and a trace element fertilizer by using water, mixing with the second mixed solution and an auxiliary agent, and stirring for a third time to form a third mixed solution;
and adding a pH regulator into the third mixed solution to regulate the third mixed solution to be neutral to prepare the fertilizer solution.
Preferably, the first time period is 20-40 min; and/or the presence of a gas in the gas,
the second time is 3-7 min; and/or the presence of a gas in the gas,
the third time is 20-40 min.
Preferably, the spray drying is carried out in a spray drying tower, the air inlet temperature of the spray drying tower is 250-280 ℃, the air outlet temperature is 80-100 ℃, and the feeding speed is 30-40 ml/min.
Preferably, the step of filtering the fertilizer solution and then spray-drying to obtain the fertilizer powder further comprises:
and (4) cooling the fertilizer powder through a dehumidifier and collecting the fertilizer powder through a negative pressure system.
The special foliar fertilizer for rice tillering for unmanned aerial vehicle flight control provided by the invention comprises a macroelement fertilizer, a microelement fertilizer, an auxiliary agent and the like, wherein a base fertilizer is used as the macroelement fertilizer, and the microelement fertilizer is attached to the base fertilizer, so that the auxiliary agent is increased to promote the absorption of crops on the fertilizer, so that the nutrition of the fertilizer is more comprehensive, and the special foliar fertilizer is suitable for the growth nutrition requirements of the crops at the tillering stage of the rice.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow diagram of a first embodiment of the preparation method of the foliar fertilizer special for rice tillering for unmanned aerial vehicle air defense provided by the invention;
fig. 2 is a schematic flow diagram of a second embodiment of the preparation method of the rice tillering dedicated foliar fertilizer for unmanned aerial vehicle flight control provided by the present invention;
fig. 3 is a schematic flow diagram of a third embodiment of the preparation method of the foliar fertilizer special for rice tillering for unmanned aerial vehicle air defense provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The invention provides a rice tillering special foliar fertilizer for unmanned aerial vehicle flight control, which comprises the following components in parts by weight:
600-1100 parts of base fertilizer, 18.5-22.2 parts of trace element fertilizer, 1-2 parts of auxiliary agent and 1-2 parts of pH regulator.
The special foliar fertilizer for rice tillering for unmanned aerial vehicle flight control provided by the invention comprises a macroelement fertilizer, a microelement fertilizer, an auxiliary agent and the like, wherein a base fertilizer is used as the macroelement fertilizer, and the microelement fertilizer is attached to the base fertilizer, so that the auxiliary agent is increased to promote the absorption of crops on the fertilizer, so that the nutrition of the fertilizer is more comprehensive, and the special foliar fertilizer is suitable for the growth nutrition requirements of the crops at the tillering stage of the rice.
The tillering stage of the rice is an important growth stage in the growth process of the rice, nitrogen, phosphorus and potassium elements are indispensable elements in the growth stage, the nitrogen element is an active nutritional factor influencing the growth and development of the rice, and the nitrogen application amount and the nitrogen application mode have important influences on the growth and elimination of rice stem tillers, the change of leaf areas, the accumulation of dry matters and the like; phosphorus plays an important role in the energy and substance metabolism of rice and participates in various chemical reactions of meristems in plants, including photosynthesis, respiration, energy storage and transfer, cell division, cell enlargement and other processes; the potassium element has activation effect on a plurality of enzymes in the plant body, and plays an important role in the aspects of protein synthesis, economic water and sugar delivery of the plant, improvement of crop stress resistance and the like.
The base fertilizer is not limited to the kind of the major elements, and may be at least two of nitrogen fertilizer, phosphate fertilizer and potassium fertilizer, and may contain some of nitrogen, phosphorus and potassium, of course, most preferably, the base fertilizer simultaneously comprises a plurality of elements such as nitrogen, phosphorus, potassium and the like, and is suitable for the growth nutritional characteristics of rice in the tillering stage, and particularly, in the embodiment of the invention, the base fertilizer comprises 200-400 parts of potassium formate, 200-400 parts of potassium nitrate, 150-200 parts of urea and 50-150 parts of ammonium polyphosphate, and the combination of the fertilizers enables the mixed macroelement fertilizer to be neutral, in addition, the content ratio of nitrogen, phosphorus pentoxide and potassium oxide in the base fertilizer is (2-4): 1: (6-8) of a first step, the base fertilizer has medium nitrogen, low phosphorus and high potassium content, and meets the nutritional characteristics of rice in the tillering stage.
The effect of the trace elements on the growth and development of the rice is as important as that of the major elements, the addition of the trace elements can obviously improve the quality and the yield of the rice, the trace elements commonly used for the rice comprise zinc, boron, iron, manganese, copper and the like, the invention does not limit the types of the trace elements specifically contained in the trace element fertilizer, for example, the trace element fertilizer can be at least one of zinc, boron, iron, manganese and copper, and only contains partial trace elements in zinc, boron, iron, manganese and copper, of course, the trace element fertilizer contains the trace elements such as zinc, boron, iron, manganese, copper and the like at the same time, so that the nutrition of the rice in the tillering stage is more comprehensive, and specifically, the trace element fertilizer comprises the following components in parts by mass: 3-3.5 parts of chelated zinc, 8-9 parts of chelated boron, 5-6 parts of chelated iron, 2-3 parts of chelated manganese and 0.5-0.7 part of chelated copper, and trace elements are added on the basis of the base fertilizer, so that the fertilizer is more comprehensive in nutrition, the high yield of crops is promoted, and the quality is improved. The chelated trace element fertilizer is not easy to be fixed in soil, is easy to be dissolved in water, is not dissociated, can be well absorbed and utilized by plants, can be mixed with other solid or liquid fertilizers for application without chemical reaction, and does not reduce the fertilizer efficiency of any fertilizer.
The auxiliary agent can increase the nutrient absorption efficiency of the rice, in the embodiment of the invention, the auxiliary agent is one or a mixture of more than two of ethoxy modified polytrisiloxane, glycerol, polyglutamic acid and sugar chain plant vaccine, and the components are contained, so that the nutrient absorption efficiency of the rice is higher and the rice has better effect.
Among the components of the auxiliary agent, the ethoxy modified polytrisiloxane is an organic silicon auxiliary agent, has extremely low surface tension and good permeability and emulsifying dispersibility, can keep the solution stable when being added into the foliar fertilizer, avoids layering, can spread water drops after being sprayed on the foliar fertilizer, avoids aggregating into water drops, and is beneficial to the absorption of the leaves on nutrients; the glycerol can enable the unmanned aerial vehicle to enhance the fog drop settlement performance in the fertilizer spraying operation, reduces fog drop drift, facilitates the spraying operation of the unmanned aerial vehicle, has the moisture absorption and moisturizing effects, increases the wetting time of the blades, prolongs the nutrient absorption time of the blades, reduces water evaporation, and prevents fertilizer damage caused by overhigh concentration of the fertilizer on the surfaces of the blades due to evaporation.
The polyglutamic acid is a water-soluble high-molecular amino acid polymer produced by microbial fermentation, is safe and degradable, is very soluble in water, contains more than 1000 super-strong hydrophilic groups (-COOH) in molecules and has strong water retention capacity. The foliar fertilizer added with the polyglutamic acid can keep the foliar wetting time and prolong the nutrient absorption time of the foliar. The water evaporation is reduced, the fertilizer damage caused by overhigh concentration of the fertilizer on the surface of the blade due to evaporation is prevented, the polyglutamic acid can effectively prevent sulfate radicals, carbonate radicals, phosphate radicals and the like from being combined with trace elements such as calcium and magnesium, insoluble substances are prevented from being generated to influence the spraying effect and the absorption of the trace elements, the polyglutamic acid has buffering capacity for acid and alkali, the polyglutamic acid is added into a foliar fertilizer to play a role in buffering the pH value after the fertilizer is dissolved, and the acid and alkali stability of the fertilizer is kept.
The sugar chain plant vaccine is small molecular saccharide extracted from marine animals such as shrimps, crabs and the like through a series of chemical and biological treatment, and has the effects of stimulating plant growth and improving disease prevention and stress resistance of plants. The sugar chain plant vaccine can induce the antiviral ability of plants, excite the inherent potential of the plants, passivate viruses, reduce the infection and proliferation of the viruses, inhibit the long-distance transportation of the viruses in the plants, promote the growth of the plants, enhance the ability of the plants to resist virus hazards, enhance the ability of the plants to resist adverse circumstances and improve the safety of the foliar fertilizer.
According to the embodiment of the invention, citric acid solution and potassium hydroxide solution are adopted for adjustment, and the mixed fertilizer solution is subjected to neutral adjustment, so that the special foliar fertilizer for rice tillering for unmanned aerial vehicle flight control is neutral, and the special foliar fertilizer is suitable for flexibly adding other various components in the using process and expanding the application occasions of the special foliar fertilizer for rice tillering for unmanned aerial vehicle flight control.
The invention also provides a preparation method of the foliar fertilizer special for rice tillering for unmanned aerial vehicle air defense, and the preparation method comprises the following steps of fig. 1, fig. 2 and fig. 3.
Referring to fig. 1, a schematic flow diagram of a first embodiment of a preparation method of a foliar fertilizer special for rice tillering for unmanned aerial vehicle air defense provided by the present invention is shown, and in this embodiment, the preparation method of the foliar fertilizer special for rice tillering for unmanned aerial vehicle air defense includes the following steps:
preparing base fertilizer, trace element fertilizer, auxiliary agent and pH regulator in parts by weight;
mixing a base fertilizer, a trace element fertilizer and an auxiliary agent, and adding a pH regulator to regulate the solution to be neutral to prepare a fertilizer solution;
filtering the fertilizer solution, and spray drying to obtain fertilizer powder.
Step S10, preparing a base fertilizer, a trace element fertilizer, an auxiliary agent and a pH regulator according to parts by weight;
the content ratio of nitrogen, phosphorus pentoxide and potassium oxide in the base fertilizer is (2-4) to 1 (6-8), so that the base fertilizer has medium nitrogen, low phosphorus and high potassium contents and meets the nutritional characteristics of rice in the tillering stage.
Step S20, mixing the base fertilizer, the trace element fertilizer and the auxiliary agent, and adding a pH regulator to regulate the solution to be neutral to prepare a fertilizer solution;
the above mixing is carried out in a reaction kettle, the fertilizer solution is neutral after the base fertilizer, the trace element fertilizer and the auxiliary agent are mixed in the reaction kettle, a pH regulator is added into the fertilizer solution, and the pH of the fertilizer solution is maintained at about 7 by adopting a dynamic adjustment process.
Step S30, filtering the fertilizer solution, and spray drying to obtain fertilizer powder;
the spray drying is carried out in a spray drying tower, the air inlet temperature of the spray drying tower is 250-280 ℃, the air outlet temperature of the spray drying tower is 80-100 ℃, and the feeding speed of the spray drying tower is 30-40 ml/min.
The preparation method of the special foliar fertilizer for rice tillering for unmanned aerial vehicle flight control provided by the embodiment adopts a spray drying process to make the foliar fertilizer be in a powder shape, and compared with the traditional fertilizer preparation, the preparation method of recrystallization after dissolution and mixing has the advantages of simple process flow, easy industrial production, small powder granularity and suitability for spraying of unmanned aerial vehicles.
Referring to fig. 2, a schematic flow diagram of a preparation method of a foliar fertilizer special for rice tillering for unmanned aerial vehicle flight control according to a second embodiment of the present invention is provided, in this embodiment, the base fertilizer includes potassium formate, potassium nitrate, urea, and ammonium polyphosphate;
the method comprises the following steps of mixing a base fertilizer, a trace element fertilizer and an auxiliary agent, adding a pH regulator to regulate the pH regulator to be neutral, and preparing a fertilizer solution:
step S201, mixing potassium formate and potassium nitrate, and stirring for a first time to form a first mixed solution;
the potassium formate and the potassium nitrate are mixed in a reaction kettle, and the stirring time is 20-40 min for the first time.
Step S202, dissolving urea in water, mixing the urea with the first mixed solution, and stirring for a second time to form a second mixed solution;
dissolving urea with water, mixing with the first mixed solution, and stirring for a second time of 3-7 min.
Step S203, dissolving ammonium polyphosphate and trace element fertilizer in water, mixing with the second mixed solution and the auxiliary agent, and stirring for a third time to form a third mixed solution;
and dissolving ammonium polyphosphate and trace element fertilizer in water, mixing with the second mixed solution and the auxiliary agent, and stirring for a third time period of 20-40 min.
Step S204, adding a pH regulator into the third mixed solution to regulate the third mixed solution to be neutral so as to prepare a fertilizer solution;
the preparation method of the special foliar fertilizer for rice tillering for unmanned aerial vehicle flight control provided by the embodiment comprises the steps of mixing and stirring potassium formate and potassium nitrate to form a first mixed solution, dissolving urea with water, mixing the dissolved urea with the first mixed solution to form a second mixed solution, dissolving ammonium polyphosphate and trace element fertilizer with water, mixing the dissolved trace element fertilizer with the second mixed solution and an auxiliary agent to form a third mixed solution, adding a pH regulator into the third mixed solution, regulating the third mixed solution to be neutral to obtain a fertilizer solution, stirring uniformly, mixing fully, facilitating control of acidity and alkalinity of the fertilizer solution, and enabling nutrition of the fertilizer to be more comprehensive.
Referring to fig. 3, a schematic flow chart of a third embodiment of the preparation method of a foliar fertilizer special for rice tillering for unmanned aerial vehicle air defense provided by the present invention includes that, in this embodiment, after the step of filtering the fertilizer solution and obtaining the fertilizer powder by spray drying, the method further includes:
and step S40, cooling the fertilizer powder through a dehumidifier and collecting the fertilizer powder through a negative pressure system.
According to the preparation method of the special foliar fertilizer for rice tillering for unmanned aerial vehicle flight control, the dried powder is cooled to 30 ℃ through a dehumidifier, and the product is collected from a discharge port through a negative pressure system, so that the dryness of the fertilizer powder is ensured, and the subsequent use and storage of foliar fertilizer are facilitated.
The technical solutions of the present invention are further described in detail with reference to the following specific examples, which should be understood as merely illustrative and not limitative.
Example 1
The preferred formulation used in this example 1 is: 600 parts of base fertilizer, 18.5 parts of trace element fertilizer, 1 part of auxiliary agent and 1 part of pH regulator; the formula of the base fertilizer is as follows: 200 parts of potassium formate, 200 parts of potassium nitrate, 150 parts of urea and 50 parts of ammonium polyphosphate; the formula of the trace element fertilizer comprises the following components: 3 parts of chelated zinc, 8 parts of chelated boron, 5 parts of chelated iron, 2 parts of chelated manganese and 0.5 part of chelated copper; the formula of the auxiliary agent is as follows: ethoxy modified polytrisiloxane, glycerol, polyglutamic acid and sugar chain plant vaccine; the formula of the pH regulator is as follows: citric acid solution and potassium hydroxide solution.
(1) Stirring and mixing potassium formate and potassium nitrate in a reaction kettle for 20min to form a first mixed solution;
(2) dissolving urea with water, mixing with the first mixed solution, and stirring for 3min to form a second mixed solution;
(3) dissolving ammonium polyphosphate and trace element fertilizer in water, mixing with the second mixed solution and the auxiliary agent, and stirring for 20min to form a third mixed solution;
(4) adding a pH regulator into the third mixed solution to regulate the third mixed solution to be neutral to prepare a fertilizer solution;
(5) filtering the fertilizer solution, and spray-drying by a spray-drying tower to obtain fertilizer powder, wherein the parameters of the spray-drying tower are that the air inlet temperature is 250 ℃, the air exhaust temperature is 80 ℃, and the feeding speed is 30 ml/min;
(6) and (4) cooling the fertilizer powder through a dehumidifier and collecting the fertilizer powder through a negative pressure system.
Example 2
The preferred formulation used in this example 2 is: 1100 parts of base fertilizer, 22.2 parts of trace element fertilizer, 2 parts of auxiliary agent and 2 parts of pH regulator; the formula of the base fertilizer is as follows: 400 parts of potassium formate, 400 parts of potassium nitrate, 200 parts of urea and 150 parts of ammonium polyphosphate; the formula of the trace element fertilizer comprises the following components: 3.5 parts of chelated zinc, 9 parts of chelated boron, 6 parts of chelated iron, 3 parts of chelated manganese and 0.7 part of chelated copper; the formula of the auxiliary agent is as follows: ethoxy modified polytrisiloxane, glycerol, polyglutamic acid and sugar chain plant vaccine; the formula of the pH regulator is as follows: citric acid solution and potassium hydroxide solution.
(1) Stirring and mixing potassium formate and potassium nitrate in a reaction kettle for 40min to form a first mixed solution;
(2) dissolving urea with water, mixing with the first mixed solution, and stirring for 7min to form a second mixed solution;
(3) dissolving ammonium polyphosphate and trace element fertilizer in water, mixing with the second mixed solution and the auxiliary agent, and stirring for 40min to form a third mixed solution;
(4) adding a pH regulator into the third mixed solution to regulate the third mixed solution to be neutral to prepare a fertilizer solution;
(5) filtering the fertilizer solution, and spray-drying by a spray-drying tower to obtain fertilizer powder, wherein the parameters of the spray-drying tower comprise that the air inlet temperature is 280 ℃, the air exhaust temperature is 100 ℃, and the feeding speed is 40 ml/min;
(6) and (4) cooling the fertilizer powder through a dehumidifier and collecting the fertilizer powder through a negative pressure system.
Example 3
The preferred formulation used in this example 3 is: 850 parts of base fertilizer, 20.3 parts of trace element fertilizer, 1.5 parts of auxiliary agent and 1.5 parts of pH regulator; the formula of the base fertilizer is as follows: 300 parts of potassium formate, 300 parts of potassium nitrate, 175 parts of urea and 100 parts of ammonium polyphosphate; the formula of the trace element fertilizer comprises the following components: 3.25 parts of chelated zinc, 8.5 parts of chelated boron, 5.5 parts of chelated iron, 2.5 parts of chelated manganese and 0.6 part of chelated copper; the formula of the auxiliary agent is as follows: ethoxy modified polytrisiloxane, glycerol, polyglutamic acid and sugar chain plant vaccine; the formula of the pH regulator is as follows: citric acid solution and potassium hydroxide solution.
(1) Stirring and mixing potassium formate and potassium nitrate in a reaction kettle for 30min to form a first mixed solution;
(2) dissolving urea with water, mixing with the first mixed solution, and stirring for 5min to form a second mixed solution;
(3) dissolving ammonium polyphosphate and trace element fertilizer in water, mixing with the second mixed solution and the auxiliary agent, and stirring for 30min to form a third mixed solution;
(4) adding a pH regulator into the third mixed solution to regulate the third mixed solution to be neutral to prepare a fertilizer solution;
(5) filtering the fertilizer solution, and performing spray drying in a spray drying tower to obtain fertilizer powder, wherein the parameters of the spray drying tower are that the air inlet temperature is 265 ℃, the air exhaust temperature is 90 ℃, and the feeding speed is 35 ml/min;
(6) and (4) cooling the fertilizer powder through a dehumidifier and collecting the fertilizer powder through a negative pressure system.
Example 4
The preferred formulation used in this example 4 is: 725 parts of base fertilizer, 19.4 parts of trace element fertilizer, 1.5 parts of auxiliary agent and 1.5 parts of pH regulator; the formula of the base fertilizer is as follows: 250 parts of potassium formate, 250 parts of potassium nitrate, 160.25 parts of urea and 125 parts of ammonium polyphosphate; the formula of the trace element fertilizer comprises the following components: 3.15 parts of chelated zinc, 8.25 parts of chelated boron, 5.25 parts of chelated iron, 2.25 parts of chelated manganese and 0.55 part of chelated copper; the formula of the auxiliary agent is as follows: ethoxy modified polytrisiloxane, glycerol, polyglutamic acid and sugar chain plant vaccine; the formula of the pH regulator is as follows: citric acid solution and potassium hydroxide solution.
(1) Stirring and mixing potassium formate and potassium nitrate in a reaction kettle for 25min to form a first mixed solution;
(2) dissolving urea with water, mixing with the first mixed solution, and stirring for 4min to form a second mixed solution;
(3) dissolving ammonium polyphosphate and trace element fertilizer in water, mixing with the second mixed solution and the auxiliary agent, and stirring for 25min to form a third mixed solution;
(4) adding a pH regulator into the third mixed solution to regulate the third mixed solution to be neutral to prepare a fertilizer solution;
(5) filtering the fertilizer solution, and spray-drying by a spray-drying tower to obtain fertilizer powder, wherein the parameters of the spray-drying tower comprise that the air inlet temperature is 257 ℃, the air exhaust temperature is 85 ℃, and the feeding speed is 32.5 ml/min;
(6) and (4) cooling the fertilizer powder through a dehumidifier and collecting the fertilizer powder through a negative pressure system.
Example 5
The preferred formulation used in this example 5 is: 975 parts of base fertilizer, 21.3 parts of trace element fertilizer, 1.75 parts of auxiliary agent and 1.75 parts of pH regulator; the formula of the base fertilizer is as follows: 350 parts of potassium formate, 350 parts of potassium nitrate, 187.5 parts of urea and 125 parts of ammonium polyphosphate; the formula of the trace element fertilizer comprises the following components: 3.38 parts of chelated zinc, 8.75 parts of chelated boron, 5.75 parts of chelated iron, 2.75 parts of chelated manganese and 0.65 part of chelated copper; the formula of the auxiliary agent is as follows: ethoxy modified polytrisiloxane, glycerol, polyglutamic acid and sugar chain plant vaccine; the formula of the pH regulator is as follows: citric acid solution and potassium hydroxide solution.
(1) Stirring and mixing potassium formate and potassium nitrate in a reaction kettle for 35min to form a first mixed solution;
(2) dissolving urea with water, mixing with the first mixed solution, and stirring for 6min to form a second mixed solution;
(3) dissolving ammonium polyphosphate and trace element fertilizer in water, mixing with the second mixed solution and the auxiliary agent, and stirring for 35min to form a third mixed solution;
(4) adding a pH regulator into the third mixed solution to regulate the third mixed solution to be neutral to prepare a fertilizer solution;
(5) filtering the fertilizer solution, and spray-drying by a spray-drying tower to obtain fertilizer powder, wherein the parameters of the spray-drying tower are that the air inlet temperature is 272.5 ℃, the air exhaust temperature is 95 ℃, and the feeding speed is 37.5 ml/min;
(6) and (4) cooling the fertilizer powder through a dehumidifier and collecting the fertilizer powder through a negative pressure system.
Comparison example (commonly used in the market)
Crushing 330 parts of urea, 300 parts of monoammonium phosphate and 350 parts of potassium sulfate into 30 meshes, uniformly mixing, sieving by a 30-mesh vibrating screen, and bagging, wherein the content ratio of nitrogen to phosphorus pentoxide to potassium oxide is 1:1: 1.
In order to better illustrate the foliar fertilizer special for rice tillering and used for unmanned aerial vehicle flight control, the foliar fertilizers in the above examples and comparative examples are evaluated from the aspects of fertilizer state, fertilizer granularity, fertilizer acidity and alkalinity, and the specific evaluation results are shown in table 1;
the foliar fertilizers in the embodiments and the comparative examples are applied to the fertilization of the unmanned aerial vehicle, the foliar fertilizer is properly mixed with other pesticides, the dissolution time required for diluting by 300 times, the growth condition of the rice diluted by 300 times, the weeding effect used by mixing with other pesticides and the like are evaluated, and the specific evaluation results are shown in table 2;
the foliar fertilizers in the embodiments and the comparative examples are applied to unmanned aerial vehicle fertilization, and are evaluated from the aspects of rice tillering number, maturing rate, thousand kernel weight and the like, and specific evaluation results are shown in table 3.
TABLE 1 evaluation table of foliar fertilizer conditions in each example of the present invention
TABLE 2 evaluation table of foliar fertilizer conditions in each example of the present invention
TABLE 3 evaluation table of foliar fertilizer conditions in each example of the present invention
| Item | Tillering number of rice | Rice setting percentage% | Thousand grain weight/g |
| Example 1 | 20 | 91％ | 28.07 |
| Example 2 | 22 | 85％ | 27.05 |
| Example 3 | 23 | 88％ | 28.00 |
| Example 4 | 22 | 90％ | 26.90 |
| Example 5 | 25 | 87％ | 27.55 |
| Comparative example | 15 | 80％ | 25.40 |
As can be seen from the table 1, the foliar fertilizer produced by the process has finer granularity compared with a proportional fertilizer, can be more suitable for the requirement of fertilizer spraying of the unmanned aerial vehicle, has controllable pH value, can be mixed with other pesticides for use, can finish fertilization and pesticide spraying at one time, and reduces the operation cost of the unmanned aerial vehicle;
as can be seen from table 2, the foliar fertilizer produced by the process has a faster dissolution speed in a comparative proportion, shortens the fertilizer spraying preparation time, improves the operation efficiency, does not cause seedling burning even when the foliar fertilizer produced by the process has a higher spraying concentration, increases the single operation area of the unmanned aerial vehicle, does not affect the herbicide effect when being mixed with other herbicides, can complete fertilization and pesticide spraying at one time, and reduces the operation cost of the unmanned aerial vehicle;
as can be seen from Table 3, the foliar fertilizer produced by the process has the advantages that the tiller number of the rice in the comparative example is obviously greater than that of the rice in the comparative example, the rice grows well, the maturing rate is also obviously superior to that of the comparative example in the rice maturing aspect, the thousand kernel weight of the rice after maturing is also greatly improved, and the foliar fertilizer is very suitable for the growth requirement of the rice.
In conclusion, the special rice tillering foliar fertilizer for unmanned aerial vehicle flight control, provided by the invention, is suitable for the nutritional characteristics of rice in the tillering stage, is simple in preparation process, is suitable for the requirement of unmanned aerial vehicle fertilizer spraying, is uniform in dissolution, free of impurities and high in dissolution speed, can be mixed with pesticide for use, and has a good effect.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A leaf fertilizer special for rice tillering for unmanned aerial vehicle flight control is characterized by comprising the following components in parts by weight:
600-1100 parts of base fertilizer, 18.5-22.2 parts of trace element fertilizer, 1-2 parts of auxiliary agent and 1-2 parts of pH regulator;
wherein the auxiliary agent comprises ethoxy modified polytrisiloxane, glycerol, polyglutamic acid and sugar chain plant vaccine;
the pH regulator comprises a citric acid solution and a potassium hydroxide solution;
the base fertilizer comprises nitrogen, phosphorus and potassium nutrients, wherein the content ratio of nitrogen to phosphorus pentoxide to potassium oxide is (2-4) to 1 (6-8);
the base fertilizer comprises the following components in parts by weight:
200-400 parts of potassium formate, 200-400 parts of potassium nitrate, 150-200 parts of urea and 50-150 parts of ammonium polyphosphate;
the trace element fertilizer comprises the following components in parts by weight: 3-3.5 parts of chelated zinc, 8-9 parts of chelated boron, 5-6 parts of chelated iron, 2-3 parts of chelated manganese and 0.5-0.7 part of chelated copper;
the special foliar fertilizer for the rice tillering for the unmanned aerial vehicle flying prevention is a neutral fertilizer.
2. The preparation method of the foliar fertilizer special for rice tillering for unmanned aerial vehicle flight control as claimed in claim 1, characterized by comprising the following steps:
preparing base fertilizer, trace element fertilizer, auxiliary agent and pH regulator in parts by weight;
mixing a base fertilizer, a trace element fertilizer and an auxiliary agent, and adding a pH regulator to regulate the solution to be neutral to prepare a fertilizer solution;
filtering the fertilizer solution, and spray drying to obtain fertilizer powder.
3. The preparation method of the foliar fertilizer special for rice tillering for unmanned aerial vehicle flight control as claimed in claim 2, wherein the base fertilizer comprises potassium formate, potassium nitrate, urea, ammonium polyphosphate;
the method comprises the following steps of mixing a base fertilizer, a trace element fertilizer and an auxiliary agent, adding a pH regulator to regulate the pH regulator to be neutral, and preparing a fertilizer solution:
mixing potassium formate and potassium nitrate, and stirring for a first time to form a first mixed solution;
dissolving urea with water, mixing the urea with the first mixed solution, and stirring for a second time to form a second mixed solution;
dissolving ammonium polyphosphate and a trace element fertilizer by using water, mixing with the second mixed solution and an auxiliary agent, and stirring for a third time to form a third mixed solution;
and adding a pH regulator into the third mixed solution to regulate the third mixed solution to be neutral to prepare the fertilizer solution.
4. The preparation method of the foliar fertilizer special for rice tillering for unmanned aerial vehicle flight control as claimed in claim 3, wherein the first time period is 20-40 min; and/or the presence of a gas in the gas,
the second time is 3-7 min; and/or the presence of a gas in the gas,
the third time is 20-40 min.
5. The preparation method of the foliar fertilizer special for rice tillering for unmanned aerial vehicle air defense as claimed in claim 2, wherein the spray drying is carried out in a spray drying tower, the air inlet temperature of the spray drying tower is 250-280 ℃, the air outlet temperature is 80-100 ℃, and the feeding speed is 30-40 ml/min.
6. The preparation method of the foliar fertilizer special for rice tillering for unmanned aerial vehicle flight control as claimed in claim 2, wherein the step of filtering the fertilizer solution and then spray-drying to obtain the fertilizer powder further comprises:
and (4) cooling the fertilizer powder through a dehumidifier and collecting the fertilizer powder through a negative pressure system.
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| CN110194699A (en) * | 2019-05-29 | 2019-09-03 | 江苏恒展农业科技有限公司 | A kind of rice tillering fertilizer |
| CN110463427B (en) * | 2019-09-02 | 2021-06-01 | 东北农业大学 | Unmanned aerial vehicle efficient boron and magnesium applying method based on rice leaf SPAD value detection |
| CN114230400A (en) * | 2022-01-17 | 2022-03-25 | 青岛科光生物技术有限公司 | Water-soluble fertilizer for improving apple quality and preparation method and application thereof |
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| CN102050675A (en) * | 2010-11-26 | 2011-05-11 | 合肥工业大学 | Liquid type composite foliar fertilizer specially for paddy rice |
| CN102992871A (en) * | 2012-10-19 | 2013-03-27 | 田淦平 | Rice foliar fertilizer |
| CN107759349A (en) * | 2017-11-24 | 2018-03-06 | 中国环境科学研究院 | A kind of more nutrient composite foliage fertilizers and preparation method and application for hindering control rice Cd accumulation |
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| JP2001008512A (en) * | 1999-06-28 | 2001-01-16 | Tobu Kensetsu Kk | Fertilizing of paddy field |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102050675A (en) * | 2010-11-26 | 2011-05-11 | 合肥工业大学 | Liquid type composite foliar fertilizer specially for paddy rice |
| CN102992871A (en) * | 2012-10-19 | 2013-03-27 | 田淦平 | Rice foliar fertilizer |
| CN107759349A (en) * | 2017-11-24 | 2018-03-06 | 中国环境科学研究院 | A kind of more nutrient composite foliage fertilizers and preparation method and application for hindering control rice Cd accumulation |
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