Fertilizer containing complex titanium and preparation method thereof

Abstract

The invention discloses a complex titanium-containing fertilizer and a preparation method thereof, a titanium element and a ligand are combined to form a stable complex through a complex reaction, so that the solubility of the titanium element in soil and the absorption efficiency of plants on the titanium element are improved; the fertilizer containing complex titanium can significantly promote the growth and development of plants and improve the yield and quality of crops, which is mainly benefited from the positive influence of titanium element on plant physiological activities, such as enhancement of photosynthesis and promotion of absorption of nutrient elements; the complexing titanium is added, so that the stress resistance of the plants can be improved, and the plants can better cope with various environmental pressures and invasion of plant diseases and insect pests; besides, the solid fertilizer provided by the invention can be mixed with a conventional fertilizer for use, and can also be independently dissolved and diluted to be sprayed on leaf surfaces and rhizomes, so that the requirements of different crops at different growth stages are met.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural fertilizers, in particular to a fertilizer containing complex titanium and a preparation method thereof. Background Art

[0002] Titanium, as one of the metal elements widely present in the earth's crust, has been gradually valued by scientists and agricultural practitioners in recent years. Although titanium is abundant in nature, it mainly exists in the form of oxides and insoluble salts in the soil, which makes it difficult for plants to directly absorb and utilize it. However, with the deepening of research, people have found that titanium-containing fertilizers have a significant promoting effect on plant growth and development.

[0003] Titanium-containing fertilizers have been proven to be broad-spectrum, low-dosage functional fertilizers that can affect a variety of plant physiological activities, such as improving plant absorption efficiency of nutrients, promoting plant growth and development, and enhancing plant resistance to disease and disasters. These effects make titanium-containing fertilizers show great potential in increasing crop yields and improving crop quality.

[0004] Although titanium-containing fertilizers have many advantages, how to effectively convert titanium into a form that can be absorbed and utilized by plants has always been a challenge faced by agricultural researchers. Traditional fertilizer preparation methods often make it difficult to add titanium to fertilizers in a form suitable for plant absorption, thus limiting the application effect of titanium-containing fertilizers. Summary of the invention

[0005] The invention discloses a fertilizer containing complex titanium and a preparation method thereof, so as to solve the deficiencies of the prior art.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is:

[0007] A method for preparing a fertilizer containing complex titanium, characterized in that it comprises the following steps: Step 1: dissolving titanyl sulfate or titanium sulfate in water at a dissolution temperature of 30-90° C. to obtain an aqueous solution of titanyl sulfate or titanium sulfate containing Ti(IV); Step 2: Add ligand A to the aqueous solution of titanyl sulfate or titanium sulfate and stir, the reaction temperature is 30-90°C, and the reaction time is 1-3h; Step 3: Add ligand B to the reaction system and stir, the reaction temperature is 30-90°C, and the reaction time is 1-3h; Step 4: Aging at 30-90° C. for 2-7 days and stirring every 12-48 hours to finally obtain a liquid fertilizer containing complex titanium.

[0008] Furthermore, the ligand A and the ligand B are independently selected from tartaric acid, citric acid, malic acid, mandelic acid and lactic acid, and the ingredients selected for the ligand A and the ligand B are different. The ligand A, the ligand B and Ti(IV) satisfy the relationship: 2≤(total molar number of ligand A and ligand B): the molar number of Ti(IV)≤12.

[0009] Furthermore, the weight ratio of the titanyl sulfate or titanium sulfate to water is 1:2-1:20.

[0010] Furthermore, the method further comprises filtering and diluting the filtrate to a desired concentration.

[0011] Furthermore, the stirring rate in step 2, step 3 and step 4 is 50-110 rpm.

[0012] A solid fertilizer containing complex titanium, comprising the liquid fertilizer according to claim 1 and a carrier, characterized in that the carrier comprises a uniform mixture of inert ore powder, kaolin, pyrophyllite, bentonite, potassium dihydrogen phosphate, ammonium phosphate, borax, activated carbon, humic acid, fulvic acid and agricultural and sideline product scraps.

[0013] Furthermore, the agricultural and sideline product waste is any one or more of straw, rice husk, corn cob, and bagasse.

[0014] Furthermore, taking the production of 1000g titanium-containing fertilizer as the standard, the raw material ratio is: 50-200g of titanyl sulfate or titanium sulfate, 20-80g of ligand A, and 20-80g of ligand B; the carrier is the remainder of the total raw material ratio.

[0015] A method for using solid fertilizer containing complex titanium, characterized in that the solid fertilizer is mixed with conventional fertilizer and then applied to the soil or dissolved and diluted with water by 5000-8000 times, and then filtered and then sprayed on leaves and rhizomes.

[0016] Furthermore, the mixing ratio of the solid fertilizer to conventional fertilizer is 1:5-1:20.

[0017] The beneficial effects of the present invention are as follows: the present invention combines titanium with a ligand to form a stable complex through a complex reaction, thereby improving the solubility of titanium in the soil and the absorption efficiency of the plant; the fertilizer containing the complex titanium can significantly promote the growth and development of plants, and improve the yield and quality of crops, which is mainly due to the positive effect of titanium on plant physiological activities, such as enhancing photosynthesis and promoting the absorption of nutrient elements; the addition of the complex titanium can also improve the stress resistance of plants, so that plants can better cope with various environmental pressures and the invasion of pests and diseases; in addition, the solid fertilizer provided by the present invention can be mixed with conventional fertilizers for use, and can also be dissolved and diluted alone for foliage and rhizome spraying, thereby meeting the needs of different crops and different growth stages. DETAILED DESCRIPTION

[0018] The following examples are provided to facilitate a better understanding of the present invention, but are not intended to limit the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified.

[0019] Example 1

[0020] A method for preparing a fertilizer containing complex titanium, characterized in that it comprises the following steps: Step 1: dissolving titanyl sulfate or titanium sulfate in water at a dissolution temperature of 30° C. to obtain an aqueous solution of titanyl sulfate or titanium sulfate containing Ti(IV), wherein the weight ratio of the titanyl sulfate or titanium sulfate to water is 1:2; Step 2: Add ligand A to the aqueous solution of titanyl sulfate or titanium sulfate and stir at a stirring rate of 50 rpm, a reaction temperature of 30° C., and a reaction time of 1 h; Step 3: Add ligand B to the reaction system and stir, the stirring rate is 50rpm, the reaction temperature is 30°C, and the reaction time is 1h; the ligand A and the ligand B are independently selected from tartaric acid, citric acid, malic acid, mandelic acid and lactic acid, and the ingredients selected for the ligand A and the ligand B are different, and the ligand A, the ligand B and Ti(IV) satisfy the relationship: 2≤(total molar number of ligand A and ligand B): molar number of Ti(IV)≤12; Step 4: Aging at 30° C. for 2 days and stirring every 12 minutes at a stirring rate of 50 rpm to finally obtain a liquid fertilizer containing complex titanium; the process also includes filtering and diluting the filtrate to a desired concentration.

[0021] A solid fertilizer containing complex titanium, comprising the liquid fertilizer according to claim 1 and a carrier, characterized in that: the carrier comprises a uniform mixture of inert ore powder, kaolin, pyrophyllite, bentonite, potassium dihydrogen phosphate, ammonium phosphate, borax, activated carbon, humic acid, fulvic acid and agricultural and sideline product waste; the agricultural and sideline product waste is any one or more of straw, rice husk, corn cob and sugarcane bagasse; taking the production of 1000g of titanium-containing fertilizer as the standard, the raw material ratio is: 50g of titanyl sulfate or titanium sulfate, 20g of ligand A, and 20g of ligand B; the carrier is the remainder of the total raw material ratio.

[0022] A method for using a solid fertilizer containing complex titanium, characterized in that the solid fertilizer is mixed with conventional fertilizer and then applied to the soil or dissolved and diluted 5000 times with water, filtered and then sprayed on leaves and roots and stems; the mixing ratio of the solid fertilizer to the conventional fertilizer is 1:5.

[0023] Example 2

[0024] A method for preparing a fertilizer containing complex titanium, characterized in that it comprises the following steps: Step 1: dissolving titanyl sulfate or titanium sulfate in water at a dissolution temperature of 30-90° C. to obtain an aqueous solution of titanyl sulfate or titanium sulfate containing Ti(IV), wherein the weight ratio of the titanyl sulfate or titanium sulfate to water is 1:13; Step 2: Add ligand A to the aqueous solution of titanyl sulfate or titanium sulfate and stir at a stirring rate of 80 rpm, a reaction temperature of 60° C., and a reaction time of 2 h; Step 3: Add ligand B to the reaction system and stir, the stirring rate is 80rpm, the reaction temperature is 60°C, and the reaction time is 2h; the ligand A and the ligand B are independently selected from tartaric acid, citric acid, malic acid, mandelic acid and lactic acid, and the ingredients selected for the ligand A and the ligand B are different, and the ligand A, the ligand B and Ti(IV) satisfy the relationship: 2≤(total molar number of ligand A and ligand B): molar number of Ti(IV)≤12; Step 4: Aging at 60° C. for 4.5 days and stirring every 36 hours at a stirring rate of 80 rpm to finally obtain a liquid fertilizer containing complex titanium; the step also includes filtering and diluting the filtrate to a desired concentration.

[0025] A solid fertilizer containing complex titanium, comprising the liquid fertilizer according to claim 1 and a carrier, characterized in that: the carrier comprises a uniform mixture of inert ore powder, kaolin, pyrophyllite, bentonite, potassium dihydrogen phosphate, ammonium phosphate, borax, activated carbon, humic acid, fulvic acid and agricultural and sideline product waste; the agricultural and sideline product waste is any one or more of straw, rice husk, corn cob and bagasse; taking the production of 1000g of titanium-containing fertilizer as the standard, the raw material ratio is: 130g of titanyl sulfate or titanium sulfate, 50g of ligand A, and 50g of ligand B; the carrier is the remainder of the total raw material ratio.

[0026] A method for using a solid fertilizer containing complex titanium, characterized in that the solid fertilizer is mixed with conventional fertilizer and then applied to the soil or dissolved and diluted 6800 times with water, filtered and then sprayed on leaves and roots and stems; the mixing ratio of the solid fertilizer to the conventional fertilizer is 1:13.

[0027] Example 3

[0028] A method for preparing a fertilizer containing complex titanium, characterized in that it comprises the following steps: Step 1: dissolving titanyl sulfate or titanium sulfate in water at a dissolution temperature of 90° C. to obtain an aqueous solution of titanyl sulfate or titanium sulfate containing Ti(IV), wherein the weight ratio of the titanyl sulfate or titanium sulfate to water is 1:20; Step 2: Add ligand A to the aqueous solution of titanyl sulfate or titanium sulfate and stir at a stirring rate of 110 rpm, a reaction temperature of 90° C., and a reaction time of 3 h; Step 3: Add ligand B to the reaction system and stir, the stirring rate is 110rpm, the reaction temperature is 90°C, and the reaction time is 3h; the ligand A and the ligand B are independently selected from tartaric acid, citric acid, malic acid, mandelic acid and lactic acid, and the ingredients selected for the ligand A and the ligand B are different, and the ligand A, the ligand B and Ti(IV) satisfy the relationship: 2≤(total molar number of ligand A and ligand B): molar number of Ti(IV)≤12; Step 4: Aging at 90° C. for 7 days and stirring every 48 hours at a stirring rate of 110 rpm to finally obtain a liquid fertilizer containing complex titanium; the step also includes filtering and diluting the filtrate to a desired concentration.

[0029] A solid fertilizer containing complex titanium, comprising the liquid fertilizer according to claim 1 and a carrier, characterized in that: the carrier comprises a uniform mixture of inert ore powder, kaolin, pyrophyllite, bentonite, potassium dihydrogen phosphate, ammonium phosphate, borax, activated carbon, humic acid, fulvic acid and agricultural and sideline product waste; the agricultural and sideline product waste is any one or more of straw, rice husk, corn cob and sugarcane bagasse; taking the production of 1000g of titanium-containing fertilizer as the standard, the raw material ratio is: 200g of titanyl sulfate or titanium sulfate, 80g of ligand A, and 80g of ligand B; the carrier is the remainder of the total raw material ratio.

[0030] A method for using a solid fertilizer containing complex titanium, characterized in that the solid fertilizer is mixed with conventional fertilizer and then applied to the soil or dissolved and diluted 8000 times with water, filtered and then sprayed on leaves and roots and stems; the mixing ratio of the solid fertilizer to the conventional fertilizer is 1:20.

[0031] Components not described in detail herein are prior art.

[0032] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the protection scope of the present invention.

Claims

1. A method for preparing a fertilizer containing complex titanium, characterized in that: The following steps are involved: Step 1: dissolving titanyl sulfate or titanium sulfate in water at a dissolution temperature of 30-90° C. to obtain an aqueous solution of titanyl sulfate or titanium sulfate containing Ti(IV); Step 2: Add ligand A to the aqueous solution of titanyl sulfate or titanium sulfate and stir, the reaction temperature is 30-90°C, and the reaction time is 1-3h; Step 3: Add ligand B to the reaction system and stir, the reaction temperature is 30-90°C, and the reaction time is 1-3h; Step 4: Aging at 30-90° C. for 2-7 days and stirring every 12-48 hours to finally obtain a liquid fertilizer containing complex titanium.

2. The preparation method according to claim 1, characterized in that: The ligand A and the ligand B are independently selected from tartaric acid, citric acid, malic acid, mandelic acid and lactic acid, and the ingredients of the ligand A and the ligand B are different. The ligand A, the ligand B and Ti(IV) satisfy the relationship: 2≤(total molar number of ligand A and ligand B): the molar number of Ti(IV)≤12.

3. The preparation method according to claim 1, characterized in that: The weight ratio of the titanyl sulfate or titanium sulfate to water is 1:2-1:

20.

4. The preparation method according to claim 1, characterized in that: It also includes filtration and diluting the filtrate to the desired concentration.

5. The preparation method according to claim 1, characterized in that: The stirring rate in step 2, step 3 and step 4 is 50-110 rpm.

6. A solid fertilizer containing complex titanium, comprising the liquid fertilizer according to claim 1 and a carrier, characterized in that: The carrier comprises a uniform mixture of inert ore powder, kaolin, pyrophyllite, bentonite, potassium dihydrogen phosphate, ammonium phosphate, borax, activated carbon, humic acid, fulvic acid and agricultural and sideline product waste.

7. A solid fertilizer containing complex titanium according to claim 6, characterized in that: The agricultural and sideline product scraps are any one or more of straw, rice husk, corn cob and bagasse.

8. The solid fertilizer containing complex titanium according to claim 6, characterized in that: Taking the production of 1000g titanium-containing fertilizer as the standard, the raw material ratio is: 50-200g of titanyl sulfate or titanium sulfate, 20-80g of ligand A, and 20-80g of ligand B; the carrier is the remainder of the total raw material ratio.

9. A method for using a solid fertilizer containing complex titanium, characterized in that: Mix the solid fertilizer with regular fertilizer and apply it to the soil or dissolve it in water and dilute it 5000-8000 times, filter it and spray it on the leaves or rhizomes.

10. The method of use according to claim 9, characterized in that: The mixing ratio of the solid fertilizer to the conventional fertilizer is 1:5-1:20.