CN114853535A

CN114853535A - Liquid chelated fertilizer containing rare earth elements and preparation method thereof

Info

Publication number: CN114853535A
Application number: CN202210618559.5A
Authority: CN
Inventors: 宋新伟; 孟龙; 宋博文
Original assignee: Zhengzhou Xinjue Biotechnology Co ltd
Current assignee: Zhengzhou Xinjue Biotechnology Co ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-08-05

Abstract

The invention discloses a liquid chelate fertilizer containing rare earth elements, which comprises the following raw materials of amino acid, citric acid, EDTA, dimethyl sulfoxide, magnesium aluminum silicate, ethanolamine, seaweed fat, urea, monoammonium phosphate, potassium nitrate, calcium chloride, magnesium trisilicate, copper sulfate, ferrous sulfate, manganese chloride, zinc chloride, boric acid, ammonium molybdate, titanium trichloride, nano selenium powder, rare earth elements and purified water; also discloses a preparation method of the liquid chelate fertilizer containing the rare earth elements. The fertilizer can quickly supplement various nutrient elements required by the growth of crops, can be directly absorbed by the crops, has high fertilizer efficiency utilization rate, can loosen soil, activate the fixed nutrient elements in the soil, improve the hardening phenomenon caused by soil eutrophication, improve the strong salt and drought resistance of the crops, improve the quality and improve the yield. The chelate fertilizer prepared by the preparation method has the advantages of uniform texture, good fertilizer efficiency and strong stability.

Description

Liquid chelated fertilizer containing rare earth elements and preparation method thereof

Technical Field

The invention relates to the technical field of chelated liquid fertilizers, in particular to a liquid chelated fertilizer containing rare earth elements and a preparation method thereof.

Background

The fertilizer is a direct or indirect supply body of nutrients required by the growth of crops and is used for improving the soil property and the soil fertility, thereby increasing the crop yield and improving the crop quality. However, the existing fertilizer has single nutrient, can not provide various nutrient elements for crops comprehensively, and causes the problems of unbalanced nutrition, soil hardening, even soil salt content exceeding standard, acid-base unbalance, crop disease increase and no increase and reduction of yield after being used for a large amount for a long time.

Disclosure of Invention

In view of the above, the present invention provides a liquid chelated fertilizer containing rare earth elements for overcoming the defects of the prior art, which can meet the requirements of crop growth and development and improve the quality and yield of crops; also discloses a preparation method for preparing the liquid chelated fertilizer.

In order to achieve the purpose, the invention adopts the following technical scheme:

the liquid chelate fertilizer containing rare earth elements comprises the following raw materials, by weight, 0.5-2 parts of amino acid, 0.5-1.5 parts of citric acid, 1-2 parts of EDTA, 0.5-2 parts of dimethyl sulfoxide, 1-3 parts of magnesium aluminum silicate, 1-2.5 parts of ethanolamine, 0.5-1 part of seaweed fat, 1-1.5 parts of urea, 1-1.5 parts of monoammonium phosphate, 0.5-1.5 parts of potassium nitrate, 0.05-0.1 part of calcium chloride, 0.01-0.03 part of magnesium trisilicate, 0.01-0.03 part of copper sulfate, 0.01-0.1 part of ferrous sulfate, 0.05-0.1 part of manganese chloride, 18.5-20 parts of zinc chloride, 0.01-0.05 part of boric acid, 0.02-0.03 part of ammonium molybdate, 0.01-0.02 part of titanium trichloride, 0.01-0.1 part of nano selenium powder, 0.03-0.65 part of rare earth elements and 0.05-70 parts of purified water.

Preferably, the feed comprises the following raw materials, by weight, 1 part of amino acid, 0.5 part of citric acid, 1.5 parts of EDTA, 0.5 part of dimethyl sulfoxide, 2 parts of magnesium aluminum silicate, 2.5 parts of ethanolamine, 1 part of seaweed fat, 1.5 parts of urea, 1.5 parts of monoammonium phosphate, 0.5 part of potassium nitrate, 0.05 part of calcium chloride, 0.03 part of magnesium trisilicate, 0.03 part of copper sulfate, 0.05 part of ferrous sulfate, 0.05 part of manganese chloride, 18.5 parts of zinc chloride, 0.03 part of boric acid, 0.03 part of ammonium molybdate, 0.02 part of titanium trichloride, 0.02 part of nano selenium powder, 0.03 part of rare earth element and 68.66 parts of purified water.

Preferably, the rare earth element is any one of lanthanum, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium, sodium, titanium, cerium, praseodymium, neodymium, promethium, or a mixture of more than one of them.

A preparation method of a liquid chelated fertilizer containing rare earth elements comprises the following steps:

(1) preparation of macroelement complex: crushing and mixing urea, monoammonium phosphate and potassium nitrate, putting the mixture into a reaction kettle, adding ethanolamine into the reaction kettle, heating to 80-100 ℃, and dissolving the raw materials to obtain a substrate mixture for later use;

(2) preparing a medium-trace element compound: respectively dissolving calcium chloride, copper sulfate, ferrous sulfate, manganese chloride, zinc chloride, boric acid, ammonium molybdate and titanium trichloride in purified water, mixing to form a mixed solution, heating to 60-80 ℃, adding EDTA and citric acid into the mixed solution, and stirring to fully dissolve the EDTA and citric acid to obtain a chemical compound for later use;

(3) preparation of rare element complex: dissolving nanometer selenium powder, rare earth elements and magnesium trisilicate with dimethyl sulfoxide respectively, and mixing;

(4) preparing a liquid chelate fertilizer: and (2) injecting purified water into the reaction kettle, heating to 80-90 ℃, then adding amino acid, magnesium aluminum silicate and seaweed fat, stirring for 40 minutes, then gradually adding the solutions obtained in the steps (1) - (3), heating to 90-100 ℃, stirring clockwise for 120 minutes, standing and cooling to obtain the liquid chelate fertilizer.

The invention has the beneficial effects that:

the invention is a multi-element compound fertilizer which can be completely dissolved in water, can quickly supplement various nutrient elements required by the growth of crops, can be directly absorbed by the crops, has high fertilizer efficiency utilization rate, can loosen soil, activate the fixed nutrient elements in the soil, improve the hardening phenomenon caused by soil eutrophication, achieve the purposes of balanced supply of major and minor elements of the crops, supplement of organic matters in the soil and more ventilation and fertility of the soil, finally ensure that the crops have strong salt and drought resistance, improve the quality and improve the yield.

The chelate fertilizer prepared by the preparation method has the advantages of uniform texture, good fertilizer efficiency and strong stability.

The invention contains a plurality of nutrient substances such as carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, silicon, calcium, magnesium, sulfur, iron, boron, manganese, zinc, molybdenum, chlorine, copper, selenium, amino acid, vitamins and the like required by the growth of crops, and fully meets the requirements of the growth and development, high quality and high yield of crops. Meanwhile, the contained industrial vitamin (rare earth) can well promote the absorption of the crops on the nutrient elements and improve the premature senility resistance of the crops; amino acid effectively loosens soil, increases organic matters and improves the utilization rate of fertilizer; the seaweed lipid promotes the growth and development of root systems and improves the drought and salt resistance of crops.

The invention is suitable for the crops, and has obvious yield increasing effect, and the quality of the crops such as amino acid, protein, Vc, reducing sugar content and the like is obviously improved; the invention has the advantages of wide source of the adopted raw materials, simple preparation method, less equipment investment, low cost and convenient large-scale popularization and production.

Detailed Description

The present invention will be further described with reference to the following examples.

Example 1

The liquid chelate fertilizer containing rare earth elements comprises the following raw materials, by weight, 0.5 part of amino acid, 0.5 part of citric acid, 1 parts of EDTA, 0.5 part of dimethyl sulfoxide, 1 part of magnesium aluminum silicate, 1 part of ethanolamine, 0.5 part of seaweed grease, 1 part of urea, 1 part of monoammonium phosphate, 0.5 part of potassium nitrate, 0.05 part of calcium chloride, 0.01 part of magnesium trisilicate, 0.01 part of copper sulfate, 0.01 part of ferrous sulfate, 0.05 part of manganese chloride, 18.5 parts of zinc chloride, 0.01 part of boric acid, 0.02 part of ammonium molybdate, 0.01 part of titanium trichloride, 0.01 part of nano selenium powder, 0.03 part of rare earth elements and 65 parts of purified water.

The rare earth element is a mixture of lanthanum, samarium, europium, gadolinium, sodium, titanium, cerium, praseodymium, neodymium and promethium.

The preparation method of the liquid chelate fertilizer containing the rare earth elements comprises the following steps:

(1) preparation of macroelement complex: crushing and mixing urea, monoammonium phosphate and potassium nitrate, then putting the mixture into a reaction kettle, adding ethanolamine into the reaction kettle, heating to 80 ℃ to dissolve the raw materials to obtain a substrate mixture for later use;

(2) preparing a medium-trace element compound: respectively dissolving calcium chloride, copper sulfate, ferrous sulfate, manganese chloride, zinc chloride, boric acid, ammonium molybdate and titanium trichloride in purified water, mixing to form a mixed solution, heating to 60 ℃, adding EDTA and citric acid into the mixed solution, and stirring to fully dissolve the EDTA and citric acid to obtain a chemical compound for later use;

(4) preparing a liquid chelate fertilizer: and (2) injecting purified water into the reaction kettle, heating to 80 ℃, adding amino acid, magnesium aluminum silicate and seaweed fat, stirring for 40 minutes, gradually adding the solutions obtained in the steps (1) to (3), heating to 90 ℃, clockwise stirring for 120 minutes, standing and cooling to obtain the liquid chelate fertilizer.

Example 2

A liquid chelate fertilizer containing rare earth elements comprises the following raw materials, by weight, 2 parts of amino acid, 1.5 parts of citric acid, 2 parts of EDTA, 2 parts of dimethyl sulfoxide, 3 parts of magnesium aluminum silicate, 2.5 parts of ethanolamine, 1 part of seaweed fat, 1.5 parts of urea, 1.5 parts of monoammonium phosphate, 1.5 parts of potassium nitrate, 0.1 part of calcium chloride, 0.03 part of magnesium trisilicate, 0.03 part of copper sulfate, 0.1 part of ferrous sulfate, 0.1 part of manganese chloride, 20 parts of zinc chloride, 0.05 part of boric acid, 0.03 part of ammonium molybdate, 0.02 part of titanium trichloride, 0.03 part of nano selenium powder, 0.05 part of rare earth elements and 70 parts of purified water.

The rare earth elements are lanthanum, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium, sodium and mixtures.

(1) preparation of macroelement complex: crushing and mixing urea, monoammonium phosphate and potassium nitrate, then putting the mixture into a reaction kettle, adding ethanolamine into the reaction kettle, heating to 100 ℃, and dissolving the raw materials to obtain a substrate mixture for later use;

(2) preparing a medium-trace element compound: respectively dissolving calcium chloride, copper sulfate, ferrous sulfate, manganese chloride, zinc chloride, boric acid, ammonium molybdate and titanium trichloride in purified water, mixing to form a mixed solution, heating to 80 ℃, adding EDTA and citric acid into the mixed solution, and stirring to fully dissolve the EDTA and citric acid to obtain a chemical compound for later use;

(4) preparing a liquid chelate fertilizer: and (2) injecting purified water into the reaction kettle, heating to 90 ℃, adding amino acid, magnesium aluminum silicate and seaweed fat, stirring for 40 minutes, gradually adding the solutions obtained in the steps (1) to (3), heating to 100 ℃, clockwise stirring for 120 minutes, standing and cooling to obtain the liquid chelate fertilizer.

Example 3

The liquid chelate fertilizer containing rare earth elements comprises the following raw materials, by weight, 1 part of amino acid, 1 part of citric acid, 1.5 parts of EDTA, 1 part of dimethyl sulfoxide, 2 parts of magnesium aluminum silicate, 2 parts of ethanolamine, 0.6 part of seaweed grease, 1.2 parts of urea, 1.2 parts of monoammonium phosphate, 1.3 parts of potassium nitrate, 0.08 part of calcium chloride, 0.02 part of magnesium trisilicate, 0.02 part of copper sulfate, 0.05 part of ferrous sulfate, 0.08 part of manganese chloride, 19 parts of zinc chloride, 0.03 part of boric acid, 0.025 part of ammonium molybdate, 0.015 part of titanium trichloride, 0.02 part of nano selenium powder, 0.04 part of rare earth elements and 68 parts of purified water.

The rare earth element is a mixture of lanthanum, samarium, europium, gadolinium, terbium, dysprosium, holmium, sodium, titanium, cerium, praseodymium, neodymium and promethium.

(1) preparation of macroelement complex: crushing and mixing urea, monoammonium phosphate and potassium nitrate, then putting the mixture into a reaction kettle, adding ethanolamine into the reaction kettle, heating to 90 ℃, and dissolving the raw materials to obtain a substrate mixture for later use;

(2) preparing a medium-trace element compound: respectively dissolving calcium chloride, copper sulfate, ferrous sulfate, manganese chloride, zinc chloride, boric acid, ammonium molybdate and titanium trichloride in purified water, mixing to form a mixed solution, heating to 70 ℃, adding EDTA and citric acid into the mixed solution, and stirring to fully dissolve the EDTA and citric acid to obtain a chemical compound for later use;

(4) preparing a liquid chelate fertilizer: and (2) injecting purified water into the reaction kettle, heating to 85 ℃, adding amino acid, magnesium aluminum silicate and seaweed fat, stirring for 40 minutes, gradually adding the solutions obtained in the steps (1) to (3), heating to 95 ℃, clockwise stirring for 120 minutes, standing and cooling to obtain the liquid chelate fertilizer.

Example 4

The liquid chelate fertilizer containing rare earth elements comprises the following raw materials, by weight, 1 part of amino acid, 0.5 part of citric acid, 1.5 parts of EDTA (ethylene diamine tetraacetic acid), 0.5 part of dimethyl sulfoxide, 2 parts of magnesium aluminum silicate, 2.5 parts of ethanolamine, 1 part of seaweed grease, 1.5 parts of urea, 1.5 parts of monoammonium phosphate, 0.5 part of potassium nitrate, 0.05 part of calcium chloride, 0.03 part of magnesium trisilicate, 0.03 part of copper sulfate, 0.05 part of ferrous sulfate, 0.05 part of manganese chloride, 18.5 parts of zinc chloride, 0.03 part of boric acid, 0.03 part of ammonium molybdate, 0.02 part of titanium trichloride, 0.02 part of nano selenium powder, 0.03 part of rare earth elements and 68.66 parts of purified water.

The rare earth element is a mixture of lanthanum, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium, sodium, titanium, cerium, praseodymium, neodymium and promethium.

The preparation method of the liquid chelated fertilizer containing rare earth elements is consistent with that of the embodiment 3.

Comparative test and test results:

comparative experiments were performed in wheat, rape, corn and peanut fields, respectively, of Yulong Zhenzhai, province.

1. Wheat field test design

The test is provided with a demonstration area and a control area, and the variety of wheat is Bainong 4199;

an exemplary area: the area is 3 mu, and the conventional fertilization and the liquid chelate fertilizer of the embodiment 4 are carried out;

control zone: area 5 mu, conventional fertilization and clean water leaf spraying in the same period and equal amount.

And (3) test results:

when the wheat is harvested in a test, the main economic traits of the wheat are measured, 3 fields are selected optionally in a demonstration area, 1 field is selected optionally in a comparison area, 3 points are selected optionally in each field, each point is used for recording the average number of wheat plants of 1 square meter, and the result is shown in table 1.

TABLE 1 wheat economic traits Table

As can be seen from Table 1, the plant height of wheat in the demonstration area is increased by 4.5c m, the effective ear yield per mu is increased by 14922 ears, the number of ear grains is increased by 3.8 grains, and the thousand grain weight is increased by 2.5 g. The liquid chelate material has obvious effects on improving crop properties such as plant height, effective spike per mu yield, number of solid grains of spike and thousand grain weight.

Yield impact: when the wheat is harvested, 3 fields are selected in the demonstration area optionally, 1 field is selected in the comparison area, 3 points are selected in each field, each point is 1 square meter, the wheat is harvested in sequence, the average number is recorded, and the yield result is shown in a table 2.

TABLE 2 statistical table of wheat yields

And (3) measuring a yield result: the wheat yield per mu in the demonstration area is 653.7kg, the wheat yield per mu in the comparison area is 553.6kg, the yield is increased by 100.09kg, the yield increase ratio is 18.08%, and the yield increase is obvious.

2. Rape field test design

The test is provided with a demonstration area and a control area, and the rape variety is No. 9 Hua-YOU hybrid;

an exemplary area: the area is 2 mu, and the conventional fertilization plus the liquid chelate fertilizer of the embodiment 4 of the invention;

control zone: area 2 mu, conventional fertilization and clean water leaf spraying in the same period and in the same amount.

And (3) test results:

when the rape is harvested in a test, the economic traits of the rape are measured, 2 fields are selected optionally in a demonstration area, 1 field is selected optionally in a comparison area, 3 points are selected optionally in each field, each point is used for recording the average number of rape plants of 1 square meter, and the result is shown in a table 3.

TABLE 3 economic traits Table of rape

As can be seen from Table 3, the height of the rape plants in the demonstration area is increased by 5c m, the effective pod number of each plant is increased by 29 horns, the seed number of each horn is increased by 4 grains, the thousand kernel weight is increased by 0.22 g, and the incidence rate of sclerotinia sclerotiorum is reduced by 24.1%. The application of the fertilizer has obvious effects on improving rape traits such as plant height, effective pod number, seed number, thousand seed weight and disease resistance.

Yield impact: when the rape is harvested, 3 fields are selected in the demonstration area, 1 field is selected in the comparison area, 3 points are selected in each field, each point is 1 square meter, the rape is harvested in sequence, the average number is recorded, and the yield result is shown in a table 4.

TABLE 4 statistics of rape yield

As can be seen from Table 4, the yield per mu of rape in the demonstration area is 206.8kg, the yield per mu in the comparison area is 173.4kg, the yield is increased by 33.38kg, the yield increase ratio is 19.3 percent, and the yield increase amplitude is obvious.

3. Corn field test design

The test is provided with a demonstration area and a control area, and the corn variety is Zhengdan 958;

an exemplary area: the area is 3 mu, and the conventional fertilization and the liquid chelate fertilizer in the embodiment 4 are carried out;

And (3) test results:

during harvesting, the main economic characters of the corn are measured, 3 fields are selected in a demonstration area, 1 field is selected in a contrast area, 3 points are selected in each field, each point is measured to obtain the average number of 1 square meter corn plants, and the result is shown in a table 5.

TABLE 5 economic traits Table for wheat

As can be seen from Table 5, the height of the corn plants in the demonstration area is reduced by 6cm, the grain number of the rows per ear is increased by 3 grains, the row number of the rows per ear is increased by 2 rows, the thousand seed weight is increased by 11 g, and the incidence rate of the insect pest corn borers is reduced by 25%, which shows that the application of the fertilizer has obvious effects on improving the corn properties such as the plant height, the grain number of the rows per ear, the row number of the rows per ear, the thousand seed weight and the insect pest resistance.

Yield impact: when the corns are harvested, 3 fields are selected in the demonstration area, 1 field is selected in the comparison area, 3 points are selected in each field, each point is 1 square meter, the corn is harvested in sequence, the average number is recorded, and the yield result is shown in a table 6.

TABLE 6 statistical table of wheat yields

And (3) measuring a yield result: the corn per mu yield in the demonstration area is 667kg, the corn per mu yield in the comparison area is 533.6kg, the yield is increased by 133.4kg, the yield increase ratio is 25%, and the yield increase is obvious.

4. Summer peanut field test design

The test is provided with a demonstration area and a control area, and the variety of summer peanuts is Yuhua No. 37;

an exemplary area: area 2 mu, conventional fertilization + liquid chelating fertilizer of the invention in example 4.

And (3) test results:

when the test is harvested, the main economic characters of the peanuts are measured, 2 fields are selected in a demonstration area, 1 field is selected in a comparison area, 3 points are selected in each field, each point is taken as the average number of 1 square meter of peanut plants, and the result is shown in a table 7.

TABLE 7 economic traits of peanut

As can be seen from Table 7, the plant height of peanuts in the demonstration area is reduced by 3cm, the pod bearing number of each plant is increased by 5 pods, the single plant plumpness rate is increased by 3%, the hundred grain weight is increased by 31 g, the incidence rate of southern blight is reduced by 17%, and the oil content of the kernels is increased by 8.48%.

Yield impact: when the peanuts are harvested, 2 fields are selected in the demonstration area, 1 field is selected in the comparison area, 3 points are selected in each field, each point is 1 square meter, the peanuts are harvested in sequence, the average number is recorded, and the yield result is shown in a table 8.

TABLE 8 statistical table of wheat yields

And (3) measuring a yield result: the summer flower yield per mu in the demonstration area is 473.6kg, the comparison area yield per mu is 360.2kg, the yield is increased by 113.4kg, the yield increase ratio is 31%, and the yield increase is obvious.

In conclusion, the fertilizer is suitable for most crops, overcomes the defect of single nutrient of the traditional fertilizer, contains manganese, zinc and copper elements which can obviously enhance the disease resistance of the crops, silicon elements which can obviously enhance the insect resistance and drought resistance of the crops, selenium elements which can enhance the premature senility resistance of the crops, industrial vitamins which can obviously promote the transformation and absorption of various nutrient elements, promote the rooting, improve the photosynthesis of crop leaves, make the plants strong, increase the yield, improve the crop quality, has wide adaptability and convenient use, and is worthy of large-area popularization.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The liquid chelate fertilizer containing rare earth elements is characterized by comprising the following raw materials, by weight, 0.5-2 parts of amino acid, 0.5-1.5 parts of citric acid, 0.78-2 parts of EDTA1, 0.5-2 parts of dimethyl sulfoxide, 1-3 parts of magnesium aluminum silicate, 1-2.5 parts of ethanolamine, 0.5-1 part of seaweed fat, 1-1.5 parts of urea, 1-1.5 parts of monoammonium phosphate, 0.5-1.5 parts of potassium nitrate, 0.05-0.1 part of calcium chloride, 0.01-0.03 part of magnesium trisilicate, 0.01-0.03 part of copper sulfate, 0.01-0.1 part of ferrous sulfate, 0.05-0.1 part of manganese chloride, 18.5-20 parts of zinc chloride, 0.01-0.05 part of boric acid, 0.02-0.03 part of ammonium molybdate, 0.01-0.02 part of titanium trichloride, 0.01-0.03 part of nano selenium powder, 0.01-0.03 part of rare earth elements and 0.05-0.05 part of purified water.

2. The liquid chelated fertilizer containing rare earth elements as claimed in claim 1, comprising the following raw materials, by weight, 1 part of amino acids, 0.5 part of citric acid, 1.5 parts of EDTA, 0.5 part of dimethyl sulfoxide, 2 parts of magnesium aluminum silicate, 2.5 parts of ethanolamine, 1 part of seaweed grease, 1.5 parts of urea, 1.5 parts of monoammonium phosphate, 0.5 part of potassium nitrate, 0.05 part of calcium chloride, 0.03 part of magnesium trisilicate, 0.03 part of copper sulfate, 0.05 part of ferrous sulfate, 0.05 part of manganese chloride, 18.5 parts of zinc chloride, 0.03 part of boric acid, 0.03 part of ammonium molybdate, 0.02 part of titanium trichloride, 0.02 part of nano selenium powder, 0.03 part of rare earth elements, and 68.66 parts of purified water.

3. The liquid chelated fertilizer containing rare earth elements as claimed in claim 1, wherein said rare earth elements are any one or more of lanthanum, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium, sodium, titanium, cerium, praseodymium, neodymium, promethium.

4. A method for preparing a liquid chelated fertilizer containing rare earth elements according to any one of claims 1-3, characterized by comprising the following steps:

(1) preparation of macroelement complex: crushing and mixing urea, monoammonium phosphate and potassium nitrate, then putting the mixture into a reaction kettle, adding ethanolamine into the reaction kettle, heating to 80-100 ℃, and dissolving the raw materials to obtain a substrate mixture for later use;