CN115594545A - Method for producing Gly-containing water-soluble fertilizer - Google Patents

Abstract

The invention relates to the technical field of crop fertilizers, and provides a method for producing a Gly-containing water-soluble fertilizer, which purifies a glycine concentrated mother solution by an electrodialysis method, and enables refined glycine prepared by purification to react with calcium nitrate tetrahydrate to prepare glycine chelated calcium, so that the condition that calcium salt and nutrient elements such as phosphorus, sulfur and the like form precipitates can be prevented, the stability of plant cell membranes can be enhanced through the action of the glycine chelated calcium, and the Gly-containing water-soluble fertilizer can participate in the regulation and control of the physiological and biochemical processes and the enzyme activity of plants, and is beneficial to the growth of plants; and secondly, the compound amino acid chelated zinc is prepared from compound amino acid prepared by mixing various amino acids and zinc sulfate heptahydrate, trace elements and various amino acid components can be provided for plants, and while a nitrogen source is provided for plant growth through the compound amino acid, the interference of soil and metal ion antagonism can be resisted through the trace element zinc, so that a stable growth environment is provided for the plants.

Description

A kind of method that contains Gly water-soluble fertilizer production

technical field

The invention relates to the technical field of crop fertilizers, in particular to a method for producing Gly-containing water-soluble fertilizers.

Background technique

Water-soluble fertilizers are easily absorbed by crops, and their absorption and utilization rate is relatively high. It is applied to facility agriculture such as drip irrigation, realizes the integration of water and fertilizer, and achieves the efficiency of saving water, fertilizer and labor. Most of the existing water-soluble fertilizers are made by mixing medium and trace elements. Some water-soluble fertilizers also have specified types of amino acids, but most of the metal ions in the existing water-soluble fertilizers exist in the form of metal salts. During the fertilization process It is easy to form precipitation with phosphorus, sulfur and other elements in the soil, thereby reducing the absorption rate of plants, and the existing water-soluble fertilizers contain fewer amino acids, which cannot fully guarantee the nutritional content of plants. Therefore, how to develop a fertilizer A kind of water-soluble fertilizer which has more comprehensive nutritional components and is beneficial to plant absorption has become a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

Technical issues resolved

Aiming at the deficiencies in the prior art, the present invention provides a method for producing water-soluble fertilizers containing Gly, so that the water-soluble fertilizers produced can also improve the absorption and utilization rate of nutrients while ensuring the comprehensive supplementation of plant nutrients, thereby improving the production efficiency of water-soluble fertilizers. application prospects.

Technical solutions

To achieve the above object, the present invention is achieved through the following technical solutions:

A kind of method that contains Gly water-soluble fertilizer production, described method comprises the following steps:

Step1, measure 100 parts by weight of glycine concentrated mother liquor for later use, then use an equal amount of methanol to dilute the glycine concentrated mother liquor, filter to remove impurities after dilution, add the resulting solution to the dilute chamber material tank of the electrodialyzer, and send to the electrodialyzer Distilled water is added to the thick chamber barrel of the dialyzer, and the light chamber solution and the concentrated chamber solution are obtained after separation by electrodialysis. The light chamber solution is heated and concentrated at a temperature of 70-100°C until glycine crystallizes, and the crystals are filtered through Separated from the mother liquor, dried to obtain high-quality glycine, and the mother liquor after crystallization and filtration can be recycled;

Step2. Weigh calcium nitrate tetrahydrate and the high-quality glycine in Step1 and deionized water according to the molar ratio of 2:3, mix them with deionized water, stir at a speed of 300-400r/min for 5-10min to make a suspension, use hydrochloric acid or Ammonia water adjusts the pH of the suspension to 5.5 and heats the temperature to 50°C, then pours the suspension into a high-pressure fluid nanomill for processing until the suspension becomes clear, and then cools the clear suspension Dry under reduced pressure, then filter into fine powder with 100-200 mesh sieve, and the gained is recorded as glycine chelated calcium;

Step3. Weigh a certain amount of compound amino acid and dissolve it in deionized water 2-3 times its weight. After removing the insoluble matter by filtration, use sodium hydroxide solution to adjust the pH to 5, and then add 20-30% of the weight of the compound amino acid. Zinc sulfate water, reacted in a water bath temperature of 60°C for 30 minutes, heated and concentrated after the reaction, cooled and crystallized, filtered and dried the crystals, and the obtained was recorded as compound amino acid chelated zinc;

Step4, take 58-60 parts by weight to get concentrated glycine mother liquor, 8-9 parts of magnesium nitrate hexahydrate, 5-8 parts of medium elements, 3-5 parts of trace elements, 15-18 parts of glycine chelate in Step2 Calcium complex, 4-5 parts of compound amino acid chelated zinc in Step3 and 85-90 parts of deionized water are standby;

Step5. Mix the glycine concentrated mother liquor in Step4 with half of the deionized water, stir evenly, add the above-mentioned glycine chelated calcium and compound amino acid chelated zinc, and stir again, and the obtained is recorded as the first component;

Step6, the magnesium nitrate hexahydrate in Step4, middle element, trace element and the deionized water of surplus are mixed, after stirring, the gained is recorded as the second component;

Step7. Mix the first component and the second component, stir evenly, filter to remove impurities, then heat and concentrate to half of the original volume, and the obtained water-soluble fertilizer containing Gly.

Further, the preparation method of the concentrated glycine mother liquor comprises the following steps:

Step 1. Pour chloroacetic acid, methanol and urotropine into the reactor, stir and dissolve, then slowly feed liquid ammonia, carry out the synthesis reaction at a temperature of 58-60°C for 2 hours, and maintain the reaction system during the reaction The pH is 7-8, wherein the molar ratio of chloroacetic acid, methanol and urotropine is 1:7.5:0.2;

Step 2, after the reaction of step 1, continue to keep warm until crystals are precipitated, then cool to room temperature and centrifugally filter, obtain mother liquor and crystals after centrifugation, use a small amount of methanol to wash the crystals twice, and wash the obtained lotion with the above-mentioned The mother liquor is mixed, and the gained is recorded as the circulating reaction solvent;

Step 3, using the circulating reaction solvent in step 2 as the reaction medium for the next circulating reaction, until the last circulating reaction ends to obtain mother liquor and crystals;

Step 4, washing the crystals in step 3 twice with methanol, mixing the washed lotion with the mother liquor in step 3, and performing simple distillation after mixing to obtain concentrated glycine mother liquor.

Furthermore, the stirring speed in the step 1 is 500-600r/min, and the centrifugal speed in the step 2 is 7000-8000r/min.

Furthermore, the number of cyclic reactions in the step 3 is 3-4 times.

Furthermore, the heating and concentration of Step 1 needs to be carried out under the condition of constant stirring.

Further, the amount of deionized water in the Step2 is 3-4 times of the total amount of calcium nitrate tetrahydrate and refined glycine.

Further, the preparation method of the compound amino acid in the Step3 is: weigh 17-18 parts of lysine, 1-2 parts of glutamic acid, 0.3-0.5 parts of alanine, 0.03-0.05 parts of valeric acid in parts by weight Amino acid and 0.1-0.3 parts of phenylalanine are mixed, and the compound amino acid is obtained after mixing evenly.

Furthermore, the middle element in the Step4 is hydrated sodium silicate.

Furthermore, the trace elements in Step4 are obtained by mixing boric acid and ferrous sulfate in equal weight ratios.

Further, the stirring speed in Step5 and Step6 is 600-800r/min.

Beneficial effect

The invention provides a method for producing Gly-containing water-soluble fertilizers. Compared with the prior known technology, the invention has the following beneficial effects:

The present invention purifies the concentrated glycine mother liquor by electrodialysis, and reacts the purified refined glycine with calcium nitrate tetrahydrate to prepare glycine chelated calcium, which can prevent calcium salt from forming precipitation with phosphorus, sulfur and other nutrient elements Glycine chelated calcium can enhance the stability of plant cell membranes, and can also participate in the regulation of plant physiological and biochemical processes and enzyme activities, which is beneficial to the growth of plants; secondly, compound amino acids and seven Zinc sulfate water is made of compound amino acid chelated zinc, which can provide plants with trace elements and a variety of amino acid components. While providing nitrogen sources for plant growth through compound amino acids, it can also resist soil interference and relieve metal stress through the trace element zinc. Ion antagonism provides a stable growth environment for plants; finally, through the addition of magnesium nitrate hexahydrate, medium elements and trace elements, more sufficient nutrients can be provided for plants, so that the Gly-containing water-soluble fertilizer produced by the present invention has better application prospects.

detailed description

In order to make the purpose, 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. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Example 1:

A kind of method that contains Gly water-soluble fertilizer production of the present embodiment, the method comprises the following steps:

Step1, measure 100 parts by weight of glycine concentrated mother liquor for later use, then use an equal amount of methanol to dilute the glycine concentrated mother liquor, filter to remove impurities after dilution, add the resulting solution to the dilute chamber material tank of the electrodialyzer, and send to the electrodialyzer Distilled water is added to the thick chamber barrel of the dialyzer, and the light chamber solution and the concentrated chamber solution are obtained after separation by electrodialysis. The light chamber solution is heated and concentrated at a temperature of 70°C until glycine crystals are precipitated, and the crystals are filtered and mixed with the mother liquor. After separation and drying, high-quality glycine is obtained, and the mother liquor after crystallization and filtration can be recycled;

Step2. Weigh calcium nitrate tetrahydrate and the high-quality glycine in Step1 and deionized water according to the molar ratio of 2:3, mix them with deionized water, stir at a speed of 300r/min for 5min to make a suspension, and use hydrochloric acid or ammonia water to dissolve the suspension The pH of the solution is adjusted to 5.5 and the temperature is heated to 50°C, then the suspension is poured into a high-pressure fluid nanomill for processing until the suspension becomes clear, and the clear suspension is dried under reduced pressure at low temperature, Filter it into a fine powder with a 100-mesh sieve, and the gained is recorded as glycine chelated calcium;

Step3, take a certain amount of compound amino acid and dissolve it in deionized water twice its weight, filter and remove insoluble matter, use sodium hydroxide solution to adjust the pH to 5, then add zinc sulfate heptahydrate whose weight is 20% of compound amino acid, React in a water bath temperature of 60°C for 30 minutes, heat and concentrate after the reaction, and carry out cooling and crystallization, filter and dry the crystals, and the obtained is recorded as the compound amino acid chelated zinc;

Step4, take 58 parts by weight to take concentrated glycine mother liquor, 8 parts of magnesium nitrate hexahydrate, 5 parts of medium elements, 3 parts of trace elements, 15 parts of glycine chelated calcium in Step2, 4 parts of compound amino acids in Step3 Chelated zinc and 85 parts of deionized water are standby;

Step5. Mix the glycine concentrated mother liquor in Step4 with half of the deionized water, stir evenly, add the above-mentioned glycine chelated calcium and compound amino acid chelated zinc, and stir again, and the obtained is recorded as the first component;

Step6, the magnesium nitrate hexahydrate in Step4, middle element, trace element and the deionized water of surplus are mixed, after stirring, the gained is recorded as the second component;

Step7. Mix the first component and the second component, stir evenly, filter to remove impurities, then heat and concentrate to half of the original volume, and the obtained water-soluble fertilizer containing Gly.

The preparation method of glycine concentrated mother liquor comprises the following steps:

Step 1. Pour chloroacetic acid, methanol and urotropine into the reactor, stir and dissolve, then slowly feed liquid ammonia, carry out the synthesis reaction at a temperature of 58°C for 2 hours, and maintain the pH of the reaction system during the reaction is 7, wherein the molar ratio of chloroacetic acid, methanol and urotropine is 1:7.5:0.2;

Step 2, after the reaction of step 1, continue to keep warm until crystals are precipitated, then cool to room temperature and centrifugally filter, obtain mother liquor and crystals after centrifugation, use a small amount of methanol to wash the crystals twice, and wash the obtained lotion with the above-mentioned The mother liquor is mixed, and the gained is recorded as the circulating reaction solvent;

Step 3, using the circulating reaction solvent in step 2 as the reaction medium for the next circulating reaction, until the last circulating reaction ends to obtain mother liquor and crystals;

Step 4, washing the crystals in step 3 twice with methanol, mixing the washed lotion with the mother liquor in step 3, and performing simple distillation after mixing to obtain concentrated glycine mother liquor.

The stirring speed in step 1 is 500r/min, and the centrifugal speed in step 2 is 7000r/min.

The number of cycle reactions in step 3 is 3 times.

The heating concentration of Step1 needs to be carried out under the condition of constant stirring.

The amount of deionized water in Step2 is 3 times of the total amount of calcium nitrate tetrahydrate and high-quality glycine.

The preparation method of the compound amino acid in Step3 is: weigh 17 parts of lysine, 1 part of glutamic acid, 0.3 part of alanine, 0.03 part of valine and 0.1 part of phenylalanine in parts by weight and mix them evenly After that is the compound amino acid.

The middle element in Step4 is hydrated sodium silicate.

Trace elements in Step4 are obtained by mixing boric acid and ferrous sulfate in equal weight ratios.

The stirring speed in Step5 and Step6 is 600r/min.

Example 2:

A kind of method that contains Gly water-soluble fertilizer production of the present embodiment, the method comprises the following steps:

Step1, measure 100 parts by weight of glycine concentrated mother liquor for later use, then use an equal amount of methanol to dilute the glycine concentrated mother liquor, filter to remove impurities after dilution, add the resulting solution to the dilute chamber material tank of the electrodialyzer, and send to the electrodialyzer Distilled water is added to the thick chamber barrel of the dialyzer, and the light chamber solution and the concentrated chamber solution are obtained after separation by electrodialysis. The light chamber solution is heated and concentrated at a temperature of 100°C until glycine crystallizes, and the crystals are filtered and mixed with the mother liquor. After separation and drying, high-quality glycine is obtained, and the mother liquor after crystallization and filtration can be recycled;

Step2. Weigh calcium nitrate tetrahydrate and the high-quality glycine in Step1 and deionized water according to the molar ratio of 2:3, mix them with deionized water, stir at a speed of 400r/min for 10min to make a suspension, and use hydrochloric acid or ammonia water to dissolve the suspension The pH of the solution is adjusted to 5.5 and the temperature is heated to 50°C, then the suspension is poured into a high-pressure fluid nanomill for processing until the suspension becomes clear, and the clear suspension is dried under reduced pressure at low temperature, Filter it into a fine powder with a 200-mesh sieve, and the gained is recorded as glycine chelated calcium;

Step3, take a certain amount of compound amino acid and dissolve it in deionized water whose weight is 3 times, filter and remove insoluble matter, use sodium hydroxide solution to adjust the pH to 5, then add zinc sulfate heptahydrate whose weight is 30% of compound amino acid, React in a water bath temperature of 60°C for 30 minutes, heat and concentrate after the reaction, and carry out cooling and crystallization, filter and dry the crystals, and the obtained is recorded as the compound amino acid chelated zinc;

Step4, take by weight 60 parts of concentrated glycine mother liquor, 9 parts of magnesium nitrate hexahydrate, 8 parts of medium elements, 5 parts of trace elements, 18 parts of glycine chelated calcium in Step2, 5 parts of compound amino acids in Step3 Chelated zinc and 90 parts of deionized water are standby;

Step5. Mix the glycine concentrated mother liquor in Step4 with half of the deionized water, stir evenly, add the above-mentioned glycine chelated calcium and compound amino acid chelated zinc, and stir again, and the obtained is recorded as the first component;

Step6, the magnesium nitrate hexahydrate in Step4, middle element, trace element and the deionized water of surplus are mixed, after stirring, the gained is recorded as the second component;

Step7. Mix the first component and the second component, stir evenly, filter to remove impurities, then heat and concentrate to half of the original volume, and the obtained water-soluble fertilizer containing Gly.

The preparation method of glycine concentrated mother liquor comprises the following steps:

Step 1. Pour chloroacetic acid, methanol and urotropine into the reactor, stir and dissolve, then slowly feed liquid ammonia, carry out the synthesis reaction at 60°C for 2 hours, and maintain the pH of the reaction system during the reaction is 8, wherein the molar ratio of chloroacetic acid, methanol and urotropine is 1:7.5:0.2;

Step 2, after the reaction of step 1, continue to keep warm until crystals are precipitated, then cool to room temperature and centrifugally filter, obtain mother liquor and crystals after centrifugation, use a small amount of methanol to wash the crystals twice, and wash the obtained lotion with the above-mentioned The mother liquor is mixed, and the gained is recorded as the circulating reaction solvent;

Step 3, using the circulating reaction solvent in step 2 as the reaction medium for the next circulating reaction, until the last circulating reaction ends to obtain mother liquor and crystals;

Step 4, washing the crystals in step 3 twice with methanol, mixing the washed lotion with the mother liquor in step 3, and performing simple distillation after mixing to obtain concentrated glycine mother liquor.

The stirring speed in step 1 is 600r/min, and the centrifugal speed in step 2 is 8000r/min.

The number of cycle reactions in step 3 is 4 times.

The heating concentration of Step1 needs to be carried out under the condition of constant stirring.

The amount of deionized water in Step2 is 4 times of the total amount of calcium nitrate tetrahydrate and high-quality glycine.

The preparation method of the compound amino acid in Step3 is: weigh 18 parts of lysine, 2 parts of glutamic acid, 0.5 part of alanine, 0.05 part of valine and 0.3 part of phenylalanine in parts by weight and mix them evenly After that is the compound amino acid.

The middle element in Step4 is hydrated sodium silicate.

Trace elements in Step4 are obtained by mixing boric acid and ferrous sulfate in equal weight ratios.

The stirring speed in Step5 and Step6 is 600r/min.

Example 3:

A kind of method that contains Gly water-soluble fertilizer production of the present embodiment, the method comprises the following steps:

Step1, measure 100 parts by weight of glycine concentrated mother liquor for later use, then use an equal amount of methanol to dilute the glycine concentrated mother liquor, filter to remove impurities after dilution, add the resulting solution to the dilute chamber material tank of the electrodialyzer, and send to the electrodialyzer Distilled water is added to the thick chamber barrel of the dialyzer, and the light chamber solution and the concentrated chamber solution are obtained after separation by electrodialysis. The light chamber solution is heated and concentrated at a temperature of 80°C until glycine crystals are precipitated, and the crystals are filtered and mixed with the mother liquor. After separation and drying, high-quality glycine is obtained, and the mother liquor after crystallization and filtration can be recycled;

Step2. Weigh calcium nitrate tetrahydrate and the high-quality glycine in Step1 and deionized water according to the molar ratio of 2:3 and mix them with deionized water. Stir at a speed of 400r/min for 8 minutes to make a suspension. Use hydrochloric acid or ammonia water to dissolve the suspension The pH of the solution is adjusted to 5.5 and the temperature is heated to 50°C, then the suspension is poured into a high-pressure fluid nanomill for processing until the suspension becomes clear, and the clear suspension is dried under reduced pressure at low temperature, Filter it into a fine powder with a 200-mesh sieve, and the gained is recorded as glycine chelated calcium;

Step3, take a certain amount of compound amino acid and dissolve it in deionized water whose weight is 3 times, filter and remove insoluble matter, use sodium hydroxide solution to adjust the pH to 5, then add zinc sulfate heptahydrate whose weight is 25% of compound amino acid, React in a water bath temperature of 60°C for 30 minutes, heat and concentrate after the reaction, and carry out cooling and crystallization, filter and dry the crystals, and the obtained is recorded as the compound amino acid chelated zinc;

Step4, take by weight 59 parts of glycine concentrated mother liquor, 9 parts of magnesium nitrate hexahydrate, 7 parts of medium elements, 4 parts of trace elements, 16 parts of glycine chelated calcium in Step2, 5 parts of compound amino acids in Step3 Chelated zinc and 88 parts of deionized water are standby;

Step5. Mix the glycine concentrated mother liquor in Step4 with half of the deionized water, stir evenly, add the above-mentioned glycine chelated calcium and compound amino acid chelated zinc, and stir again, and the obtained is recorded as the first component;

Step6, the magnesium nitrate hexahydrate in Step4, middle element, trace element and the deionized water of surplus are mixed, after stirring, the gained is recorded as the second component;

Step7. Mix the first component and the second component, stir evenly, filter to remove impurities, then heat and concentrate to half of the original volume, and the obtained water-soluble fertilizer containing Gly.

The preparation method of glycine concentrated mother liquor comprises the following steps:

Step 1. Pour chloroacetic acid, methanol and urotropine into the reactor, stir and dissolve, then slowly feed liquid ammonia, carry out the synthesis reaction at 59°C for 2 hours, and maintain the pH of the reaction system during the reaction is 8, wherein the molar ratio of chloroacetic acid, methanol and urotropine is 1:7.5:0.2;

Step 2, after the reaction of step 1, continue to keep warm until crystals are precipitated, then cool to room temperature and centrifugally filter, obtain mother liquor and crystals after centrifugation, use a small amount of methanol to wash the crystals twice, and wash the obtained lotion with the above-mentioned The mother liquor is mixed, and the gained is recorded as the circulating reaction solvent;

Step 3, using the circulating reaction solvent in step 2 as the reaction medium for the next circulating reaction, until the last circulating reaction ends to obtain mother liquor and crystals;

Step 4, washing the crystals in step 3 twice with methanol, mixing the washed lotion with the mother liquor in step 3, and performing simple distillation after mixing to obtain concentrated glycine mother liquor.

The stirring speed in step 1 is 500r/min, and the centrifugal speed in step 2 is 8000r/min.

The number of cycle reactions in step 3 is 3 times.

The heating concentration of Step1 needs to be carried out under the condition of constant stirring.

The amount of deionized water in Step2 is 3 times of the total amount of calcium nitrate tetrahydrate and high-quality glycine.

The preparation method of the compound amino acid in Step3 is: weigh 18 parts of lysine, 1 part of glutamic acid, 0.4 part of alanine, 0.04 part of valine and 0.2 part of phenylalanine in parts by weight and mix them evenly After that is the compound amino acid.

The middle element in Step4 is hydrated sodium silicate.

Trace elements in Step4 are obtained by mixing boric acid and ferrous sulfate in equal weight ratios.

The stirring speed in Step5 and Step6 is 700r/min.

Comparative example:

A water-soluble fertilizer containing amino acids randomly selected from the market.

performance testing

Randomly divide 4 test fields of 3 meters × 10 meters in the test field, and plant tomatoes of the same variety according to the same planting method, keep a piece of test field without spraying fertilizer and record it as a blank group, and the remaining four blocks are sprayed with Example 1- 3 and the water-soluble fertilizer in the comparative example, and it is recorded as embodiment 1, embodiment 2, embodiment 3 and comparative example, the tomato output of different experimental fields is recorded, and the record data is shown in the following table:

Test field Example 1 Example 2 Example 3 comparative example blank group Average yield per mu (kg) 4536 4329 4598 2721 1815

Shown by the data in the table above, it can be known that the yield per mu of tomato in Experimental Field Example 1-3 is significantly higher than that of comparative example and blank group, thereby showing that the Gly-containing water-soluble fertilizer produced by Embodiment 1-3 of the present invention helps to improve crops Therefore, the Gly-containing water-soluble fertilizer prepared by the present invention has better application prospects and market promotion value.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be described in the foregoing embodiments Modifications are made to the recorded technical solutions, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A method for producing a Gly-containing water-soluble fertilizer is characterized by comprising the following steps:

step1, measuring 100 parts by weight of glycine concentrated mother liquor for later use, diluting the glycine concentrated mother liquor by using methanol with the same amount, filtering to remove impurities after dilution is finished, adding the obtained solution into a dilute chamber charging basket of an electrodialyzer, adding distilled water into a concentrated chamber charging basket of the electrodialyzer, performing electrodialysis separation to obtain a dilute chamber solution and a concentrated chamber solution, heating and concentrating the dilute chamber solution at the temperature of 70-100 ℃ until glycine is crystallized and separated out, separating a crystal from the mother liquor by filtering, drying to obtain refined glycine, and recycling the crystallized and filtered mother liquor;

step2, as per 2:3, weighing calcium nitrate tetrahydrate and refined glycine in Step1, mixing the calcium nitrate tetrahydrate and the refined glycine with deionized water, stirring the mixture for 5 to 10 minutes at the speed of 300 to 400r/min to prepare a suspension, adjusting the pH of the suspension to 5.5 by using hydrochloric acid or ammonia water, heating the suspension to 50 ℃, pouring the suspension into a high-pressure fluid nano mill for treatment until the suspension becomes clear, drying the clear suspension at a low temperature under reduced pressure, filtering the suspension into fine powder by using a 100 to 200-mesh screen, and obtaining the fine powder which is recorded as glycine chelated calcium;

step3, weighing a certain amount of compound amino acid, dissolving the compound amino acid in deionized water with the weight 2-3 times of the weight of the compound amino acid, filtering to remove insoluble substances, adjusting the pH to 5 by using a sodium hydroxide solution, adding zinc sulfate heptahydrate with the weight of 20-30% of the compound amino acid, reacting for 30min at the water bath temperature of 60 ℃, heating, concentrating, cooling, crystallizing, filtering and drying crystals to obtain the compound amino acid chelated zinc;

step4, weighing 58-60 parts by weight of concentrated glycine mother liquor, 8-9 parts by weight of magnesium nitrate hexahydrate, 5-8 parts by weight of medium elements, 3-5 parts by weight of trace elements, 15-18 parts by weight of calcium glycine chelate in Step2, 4-5 parts by weight of zinc amino acid complex chelate in Step3 and 85-90 parts by weight of deionized water for later use;

step5, mixing the glycine concentrated mother liquor in Step4 with one half of deionized water, uniformly stirring, adding the glycine chelated calcium and the compound amino acid chelated zinc in parts by weight, and stirring again to obtain a first component;

step6, mixing magnesium nitrate hexahydrate, secondary elements, trace elements and the balance of deionized water in Step4, and stirring uniformly to obtain a second component;

and Step7, mixing the first component and the second component, uniformly stirring, filtering to remove impurities, and heating and concentrating to half of the original volume to obtain the Gly-containing water-soluble fertilizer.

2. The method for producing the Gly-containing water-soluble fertilizer according to claim 1, wherein the method for preparing the mother solution of concentrated glycine comprises the following steps:

step1, pouring chloroacetic acid, methanol and urotropine into a reactor, stirring and dissolving, slowly introducing liquid ammonia, carrying out synthetic reaction for 2 hours at the temperature of 58-60 ℃, and maintaining the pH of a reaction system to be 7-8 in the reaction process, wherein the molar ratio of chloroacetic acid to methanol to urotropine is 1:7.5:0.2;

step2, after the reaction in the step1 is finished, keeping the temperature until crystals are separated out, cooling to room temperature, centrifuging, filtering to obtain mother liquor and crystals, washing the crystals for 2 times by using a small amount of methanol, mixing washing liquor obtained by washing with the mother liquor, and taking the washing liquor as a circulating reaction solvent;

3, taking the cyclic reaction solvent in the step2 as a reaction medium for the next cyclic reaction to obtain mother liquor and a crystal until the last cyclic reaction is finished;

and 4, washing the crystal in the step3 for 2 times by using methanol, mixing the washed washing liquid with the mother liquor in the step3, and simply distilling the mixed washing liquid to obtain the glycine concentrated mother liquor.

3. The method for producing the Gly-containing water-soluble fertilizer according to claim 2, wherein the stirring speed in the step1 is 500-600r/min, and the centrifugal rotation speed in the step2 is 7000-8000r/min.

4. The method for producing the Gly-containing water-soluble fertilizer according to claim 2, wherein the number of the circulating reactions in the step3 is 3-4.

5. The method for producing the Gly-containing water-soluble fertilizer according to claim 1, wherein Step1 is heated and concentrated under the condition of continuous stirring.

6. The method for producing the Gly-containing water-soluble fertilizer according to claim 1, wherein the amount of the deionized water in Step2 is 3-4 times of the total amount of the calcium nitrate tetrahydrate and the refined glycine.

7. The method for producing the Gly-containing water-soluble fertilizer according to claim 1, wherein the method for preparing the compound amino acid in Step3 comprises the following steps: weighing 17-18 parts of lysine, 1-2 parts of glutamic acid, 0.3-0.5 part of alanine, 0.03-0.05 part of valine and 0.1-0.3 part of phenylalanine according to parts by weight, mixing uniformly to obtain the compound amino acid.

8. The process for producing a Gly-containing water-soluble fertilizer according to claim 1, wherein the medium element in Step4 is sodium silicate hydrate.

9. The method for producing the Gly-containing water-soluble fertilizer according to claim 1, wherein the trace element in Step4 is boric acid and ferrous sulfate which are mixed according to the same weight ratio.

10. The method for producing the Gly-containing water-soluble fertilizer according to claim 1, wherein the stirring speed in Step5 and Step6 is 600-800r/min.