Water-soluble multi-element fertilizer containing dihydroquercetin and preparation method thereof

Abstract

The invention provides a water-soluble multi-element fertilizer containing dihydroquercetin and a preparation method thereof, and relates to the technical field of fertilizers. The water-soluble multi-element fertilizer containing dihydroquercetin is prepared from 70 to 80 parts of animal waste, 30 to 45 parts of nitrogen-phosphorus-potassium ternary compound fertilizer, 0.003 to 0.007 part of dihydroquercetin, 5 to 8 parts of arabinogalactan, 5 to 10 parts of humic acid, 3 to 5 parts of chitosan oligosaccharide, 3 to 9 parts of trace element inorganic salt and 2 to 7 parts of biological agent. According to the dihydroquercetin-containing water-soluble multi-element fertilizer provided by the invention, the dihydroquercetin and the trace element inorganic salt are simultaneously added into the fertilizer, so that the growth of plants can be remarkably promoted, the multi-index expression condition of the plants in the growth process is improved, and in addition, the yield of the water-soluble multi-element fertilizer is increased through two times of fermentation during preparation of the fertilizer. The temperature of the primary fermentation is 45-53 DEG C and the time is 2-3 days, the temperature of the secondary fermentation is 60-75 DEG C and the time is 10-16 days, and by setting the parameters, the growth of the plants can be promoted.

Description

Technical Field

[0001] The invention relates to the technical field of fertilizers, and in particular to a water-soluble multi-element fertilizer containing dihydroquercetin and a preparation method thereof. Background Art

[0002] Fertilizer refers to a type of substance that provides one or more essential nutrients for plants, improves soil properties and increases soil fertility. It is one of the material bases of agricultural production. It mainly includes ammonium phosphate fertilizers, large-element water-soluble fertilizers, medium-amount multi-element fertilizers, biological fertilizers, organic fertilizers, multi-dimensional field energy concentrated organic fertilizers, etc.

[0003] During the plant growth stage, proper application of fertilizers can promote plant growth, increase plant yields, etc. Existing fertilizers generally include nitrogen fertilizers, phosphorus fertilizers and potassium fertilizers. For energy recycling and sustainable development, plant straw is generally added to the raw materials for fertilizer production. Since the composition of existing fertilizers is relatively simple and the various components act independently, crops have poor absorption of fertilizer components. To a certain extent, the growth of plants cannot meet expectations. After the fruits of the plants are picked, the fruit generally has a short shelf life, which is not convenient for long-distance transportation.

[0004] Therefore, it is necessary to provide a new water-soluble multi-element fertilizer containing dihydroquercetin and a preparation method thereof to solve the above technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a water-soluble multi-element fertilizer containing dihydroquercetin and a preparation method thereof.

[0006] The water-soluble multi-element fertilizer containing dihydroquercetin provided by the present invention comprises the following components in parts by weight:

[0007] 70-80 parts of animal manure, 30-45 parts of nitrogen, phosphorus and potassium compound fertilizer, 0.003-0.007 parts of dihydroquercetin, 5-8 parts of arabinogalactan, 5-10 parts of humic acid, 3-5 parts of chitosan oligosaccharide, 3-9 parts of trace element inorganic salts, and 2-7 parts of biological bacterial agent;

[0008] The trace element inorganic salt includes ferrous sulfate, manganese sulfate and zinc sulfate, wherein the weight ratio of ferrous sulfate, manganese sulfate and manganese sulfate is (30-35): (5-9): (1-3);

[0009] The biological bacterial agent includes nitrogen-fixing bacteria, phosphate-solubilizing bacteria and potassium-solubilizing bacteria.

[0010] Preferably, the weight ratio of nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer in the nitrogen-phosphorus-potassium ternary compound fertilizer is (3-9): (15-20): (10-18).

[0011] Preferably, the nitrogen fertilizer raw material is at least one of urea, ammonium sulfate, ammonium chloride and ammonium bicarbonate.

[0012] Preferably, the potash fertilizer raw material is at least one of potassium chloride, potassium sulfate and potassium nitrate.

[0013] Preferably, the phosphate fertilizer raw material is at least one of monoammonium phosphate, diammonium phosphate, superphosphate and triple superphosphate.

[0014] Preferably, the molecular weight of the chitosan oligosaccharide is less than or equal to 3000Da.

[0015] Preferably, the effective live bacteria concentration of nitrogen-fixing bacteria in the biological preparation is 30-100 million per gram of fertilizer, the effective live bacteria concentration of phosphate-solubilizing bacteria in the biological preparation is 10-80 million per gram of fertilizer, and the effective live bacteria concentration of potassium-solubilizing bacteria in the biological preparation is 30-150 million per gram of fertilizer.

[0016] A method for preparing a water-soluble multi-element fertilizer containing dihydroquercetin is prepared according to the above-mentioned water-soluble multi-element fertilizer containing dihydroquercetin, comprising the following steps:

[0017] S1: Mix nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer to obtain nitrogen, phosphorus and potassium compound fertilizer;

[0018] S2: Add ferrous sulfate to warm water at 30-35°C, stir evenly to obtain a ferrous sulfate solution, add manganese sulfate to warm water at 33-37°C, stir evenly to obtain a manganese sulfate solution, add zinc sulfate to warm water at 35-40°C, stir evenly to obtain a zinc sulfate solution;

[0019] S3: stirring and mixing nitrogen, phosphorus and potassium compound fertilizer, dihydroquercetin, arabinogalactan, humic acid and chitosan oligosaccharide to obtain a mixture A;

[0020] S4: mixing the ferrous sulfate solution, the manganese sulfate solution and the zinc sulfate solution to obtain a mixture B;

[0021] S5: Stirring and mixing the animal manure and the mixture A, adding water to make the water content 55-65wt%, adding the biological agent, stirring evenly and piling for primary fermentation, the temperature of the primary fermentation is 45-53°C, and the time is 2-3 days, adding the mixture B, stirring evenly and piling for secondary fermentation, turning the pile every two days, the temperature of the secondary fermentation is 60-75°C, and the time is 10-16 days. After the fermentation is completed, the fermented material is dried and granulated to obtain fertilizer granules.

[0022] Preferably, in the step S5, after adding the biological agent, stirring is performed by first stirring at a low speed and then at a high speed, wherein the rotation speed during low-speed stirring is 45-60 rpm and the time is 30-50 min, and the rotation speed during high-speed stirring is 450-550 rpm and the time is 30-45 min.

[0023] Preferably, the particle size of the fertilizer particles is 2-3 mm.

[0024] Compared with the related art, the water-soluble multi-element fertilizer containing dihydroquercetin and the preparation method thereof provided by the present invention have the following beneficial effects:

[0025] 1. The present invention can significantly promote the growth of plants and improve the performance of multiple indicators of plants during the growth process by adding dihydroquercetin and trace element inorganic salts to fertilizers at the same time. In addition, the added dihydroquercetin can effectively extend the shelf life of fruits, slow down the decay of fruits, and improve the quality of fruits.

[0026] 2. Nitrogen-fixing bacteria can convert nitrogen in the air into ammonia nitrogen that can be absorbed by plants. Dihydroquercetin has the effect of promoting plant growth and can enhance the plant's absorption of nitrogen. Phosphate-solubilizing bacteria can decompose the insoluble phosphates in the soil into phosphorus that can be absorbed by plants, thereby promoting plant growth. Potassium-solubilizing bacteria can decompose silicate minerals in the soil and release potassium that can be absorbed and utilized by plants. The addition of nitrogen-fixing bacteria, phosphate-solubilizing bacteria and potassium-solubilizing bacteria can improve plant growth.

[0027] 3. Combining dihydroquercetin with nitrogen-fixing bacteria, phosphate-solubilizing bacteria and potassium-solubilizing bacteria can bring into play the nitrogen-fixing, phosphate-solubilizing and potassium-solubilizing effects of biological agents, and the antioxidant properties of dihydroquercetin itself can promote the growth and reproduction of beneficial bacteria.

[0028] 4. The present invention uses two fermentations when preparing fertilizer, and the temperature of the first fermentation is 45-53°C, the time is 2-3 days, and the temperature of the second fermentation is 60-75°C, the time is 10-16 days. By setting these parameters, the growth of plants can be promoted. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the embodiments.

[0030] In the specific implementation process:

[0031] Embodiment 1

[0032] A water-soluble multi-element fertilizer containing dihydroquercetin comprises the following components in parts by weight:

[0033] 75 parts of animal manure, 37.5 parts of nitrogen, phosphorus and potassium compound fertilizer, 0.005 parts of dihydroquercetin, 6.5 parts of arabinogalactan, 7.5 parts of humic acid, 4 parts of chitosan oligosaccharide, 6 parts of trace element inorganic salts, and 4.5 parts of biological bacteria agent;

[0034] The trace element inorganic salt includes ferrous sulfate, manganese sulfate and zinc sulfate, wherein the weight ratio of ferrous sulfate, manganese sulfate and manganese sulfate is (30-35): (5-9): (1-3);

[0035] Biological agents include nitrogen-fixing bacteria, phosphate-solubilizing bacteria, and potassium-solubilizing bacteria;

[0036] The weight ratio of nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer in the nitrogen-phosphorus-potassium ternary compound fertilizer is (3-9): (15-20): (10-18), the nitrogen fertilizer raw material is at least one of urea, ammonium sulfate, ammonium chloride and ammonium bicarbonate, the potassium fertilizer raw material is at least one of potassium chloride, potassium sulfate and potassium nitrate, the phosphorus fertilizer raw material is at least one of monoammonium phosphate, diammonium phosphate, superphosphate and double superphosphate, the molecular weight of chitosan oligosaccharide is less than or equal to 3000Da, the effective live bacteria concentration of nitrogen-fixing bacteria in the biological preparation is 300-100 million / gram fertilizer, the effective live bacteria concentration of phosphate-solubilizing bacteria in the biological preparation is 100-80 million / gram fertilizer, and the effective live bacteria concentration of potassium-solubilizing bacteria in the biological preparation is 300-150 million / gram fertilizer;

[0037] A method for preparing a water-soluble multi-element fertilizer containing dihydroquercetin is prepared according to the above-mentioned water-soluble multi-element fertilizer containing dihydroquercetin, comprising the following steps:

[0038] S1: Mix nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer to obtain nitrogen, phosphorus and potassium compound fertilizer;

[0039] S2: Add ferrous sulfate to warm water at 30-35°C, stir evenly to obtain a ferrous sulfate solution, add manganese sulfate to warm water at 33-37°C, stir evenly to obtain a manganese sulfate solution, add zinc sulfate to warm water at 35-40°C, stir evenly to obtain a zinc sulfate solution;

[0040] S3: stirring and mixing nitrogen, phosphorus and potassium compound fertilizer, dihydroquercetin, arabinogalactan, humic acid and chitosan oligosaccharide to obtain a mixture A;

[0041] S4: mixing the ferrous sulfate solution, the manganese sulfate solution and the zinc sulfate solution to obtain a mixture B;

[0042] S5: Stirring and mixing the animal manure and the mixture A, adding water to make the water content of 55-65wt%, adding the biological agent, and after adding the biological agent, stirring by first low speed and then high speed stirring, wherein the rotation speed during low speed stirring is 45-60rpm, the time is 30-50min, the rotation speed during high speed stirring is 450-550rpm, the time is 30-45min, stirring and stacking for primary fermentation, the temperature during primary fermentation is 45-53℃, the time is 2-3 days, adding the mixture B, stirring and stacking for secondary fermentation, turning the pile every two days, the temperature during secondary fermentation is 60-75℃, the time is 10-16 days, after the fermentation is completed, drying the fermented material, granulating to obtain fertilizer granules, the particle size of the fertilizer granules is 2-3mm.

[0043] Embodiment 2

[0044] A water-soluble multi-element fertilizer containing dihydroquercetin comprises the following components in parts by weight:

[0045] 70 parts of animal manure, 30 parts of nitrogen, phosphorus and potassium compound fertilizer, 0.003 parts of dihydroquercetin, 5 parts of arabinogalactan, 5 parts of humic acid, 3 parts of chitosan oligosaccharide, 3 parts of trace element inorganic salts, and 2 parts of biological bacterial agent;

[0046] The trace element inorganic salt includes ferrous sulfate, manganese sulfate and zinc sulfate, wherein the weight ratio of ferrous sulfate, manganese sulfate and manganese sulfate is (30-35): (5-9): (1-3);

[0047] Biological agents include nitrogen-fixing bacteria, phosphate-solubilizing bacteria, and potassium-solubilizing bacteria;

[0048] The weight ratio of nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer in the nitrogen-phosphorus-potassium ternary compound fertilizer is (3-9): (15-20): (10-18), the nitrogen fertilizer raw material is at least one of urea, ammonium sulfate, ammonium chloride and ammonium bicarbonate, the potassium fertilizer raw material is at least one of potassium chloride, potassium sulfate and potassium nitrate, the phosphorus fertilizer raw material is at least one of monoammonium phosphate, diammonium phosphate, superphosphate and double superphosphate, the molecular weight of chitosan oligosaccharide is less than or equal to 3000Da, the effective live bacteria concentration of nitrogen-fixing bacteria in the biological preparation is 300-100 million / gram fertilizer, the effective live bacteria concentration of phosphate-solubilizing bacteria in the biological preparation is 100-80 million / gram fertilizer, and the effective live bacteria concentration of potassium-solubilizing bacteria in the biological preparation is 300-150 million / gram fertilizer;

[0049] A method for preparing a water-soluble multi-element fertilizer containing dihydroquercetin is prepared according to the above-mentioned water-soluble multi-element fertilizer containing dihydroquercetin, comprising the following steps:

[0050] S1: Mix nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer to obtain nitrogen, phosphorus and potassium compound fertilizer;

[0051] S2: Add ferrous sulfate to warm water at 30-35°C, stir evenly to obtain a ferrous sulfate solution, add manganese sulfate to warm water at 33-37°C, stir evenly to obtain a manganese sulfate solution, add zinc sulfate to warm water at 35-40°C, stir evenly to obtain a zinc sulfate solution;

[0052] S3: stirring and mixing nitrogen, phosphorus and potassium compound fertilizer, dihydroquercetin, arabinogalactan, humic acid and chitosan oligosaccharide to obtain a mixture A;

[0053] S4: mixing the ferrous sulfate solution, the manganese sulfate solution and the zinc sulfate solution to obtain a mixture B;

[0054] S5: Stirring and mixing the animal manure and the mixture A, adding water to make the water content of 55-65wt%, adding the biological agent, and after adding the biological agent, stirring by first low speed and then high speed stirring, wherein the rotation speed during low speed stirring is 45-60rpm, the time is 30-50min, the rotation speed during high speed stirring is 450-550rpm, the time is 30-45min, stirring and stacking for primary fermentation, the temperature during primary fermentation is 45-53℃, the time is 2-3 days, adding the mixture B, stirring and stacking for secondary fermentation, turning the pile every two days, the temperature during secondary fermentation is 60-75℃, the time is 10-16 days, after the fermentation is completed, drying the fermented material, granulating to obtain fertilizer granules, the particle size of the fertilizer granules is 2-3mm.

[0055] Embodiment 3

[0056] A water-soluble multi-element fertilizer containing dihydroquercetin comprises the following components in parts by weight:

[0057] 80 parts of animal manure, 45 parts of nitrogen, phosphorus and potassium compound fertilizer, 0.007 parts of dihydroquercetin, 8 parts of arabinogalactan, 10 parts of humic acid, 5 parts of chitosan oligosaccharide, 9 parts of trace element inorganic salts, and 7 parts of biological bacterial agent;

[0058] The trace element inorganic salt includes ferrous sulfate, manganese sulfate and zinc sulfate, wherein the weight ratio of ferrous sulfate, manganese sulfate and manganese sulfate is (30-35): (5-9): (1-3);

[0059] Biological agents include nitrogen-fixing bacteria, phosphate-solubilizing bacteria, and potassium-solubilizing bacteria;

[0060] The weight ratio of nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer in the nitrogen-phosphorus-potassium ternary compound fertilizer is (3-9): (15-20): (10-18), the nitrogen fertilizer raw material is at least one of urea, ammonium sulfate, ammonium chloride and ammonium bicarbonate, the potassium fertilizer raw material is at least one of potassium chloride, potassium sulfate and potassium nitrate, the phosphorus fertilizer raw material is at least one of monoammonium phosphate, diammonium phosphate, superphosphate and double superphosphate, the molecular weight of chitosan oligosaccharide is less than or equal to 3000Da, the effective live bacteria concentration of nitrogen-fixing bacteria in the biological preparation is 300-100 million / gram fertilizer, the effective live bacteria concentration of phosphate-solubilizing bacteria in the biological preparation is 100-80 million / gram fertilizer, and the effective live bacteria concentration of potassium-solubilizing bacteria in the biological preparation is 300-150 million / gram fertilizer;

[0061] A method for preparing a water-soluble multi-element fertilizer containing dihydroquercetin is prepared according to the above-mentioned water-soluble multi-element fertilizer containing dihydroquercetin, comprising the following steps:

[0062] S1: Mix nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer to obtain nitrogen, phosphorus and potassium compound fertilizer;

[0063] S2: Add ferrous sulfate to warm water at 30-35°C, stir evenly to obtain a ferrous sulfate solution, add manganese sulfate to warm water at 33-37°C, stir evenly to obtain a manganese sulfate solution, add zinc sulfate to warm water at 35-40°C, stir evenly to obtain a zinc sulfate solution;

[0064] S3: stirring and mixing nitrogen, phosphorus and potassium compound fertilizer, dihydroquercetin, arabinogalactan, humic acid and chitosan oligosaccharide to obtain a mixture A;

[0065] S4: mixing the ferrous sulfate solution, the manganese sulfate solution and the zinc sulfate solution to obtain a mixture B;

[0066] S5: Stirring and mixing the animal manure and the mixture A, adding water to make the water content of 55-65wt%, adding the biological agent, and after adding the biological agent, stirring by first low speed and then high speed stirring, wherein the rotation speed during low speed stirring is 45-60rpm, the time is 30-50min, the rotation speed during high speed stirring is 450-550rpm, the time is 30-45min, stirring and stacking for primary fermentation, the temperature during primary fermentation is 45-53℃, the time is 2-3 days, adding the mixture B, stirring and stacking for secondary fermentation, turning the pile every two days, the temperature during secondary fermentation is 60-75℃, the time is 10-16 days, after the fermentation is completed, drying the fermented material, granulating to obtain fertilizer granules, the particle size of the fertilizer granules is 2-3mm.

[0067] Comparative Example 1

[0068] The components different from Example 1 are:

[0069] A water-soluble multi-element fertilizer containing dihydroquercetin comprises the following components in parts by weight:

[0070] 75 parts of animal manure, 37.5 parts of nitrogen, phosphorus and potassium compound fertilizer, 6.5 parts of arabinogalactan, 7.5 parts of humic acid, 4 parts of chitosan oligosaccharide, 6 parts of trace element inorganic salts, and 4.5 parts of biological bacteria agent;

[0071] The difference from Example 1 in terms of the preparation method is:

[0072] S3: stirring and mixing nitrogen, phosphorus and potassium compound fertilizer, arabinogalactan, humic acid and chitosan oligosaccharide to obtain a mixture A;

[0073] Comparative Example 2

[0074] The components different from Example 1 are:

[0075] A water-soluble multi-element fertilizer containing dihydroquercetin comprises the following components in parts by weight:

[0076] 75 parts of animal manure, 37.5 parts of nitrogen, phosphorus and potassium compound fertilizer, 0.005 parts of dihydroquercetin, 6.5 parts of arabinogalactan, 7.5 parts of humic acid, 4 parts of chitosan oligosaccharide, and 4.5 parts of biological bacterial agent;

[0077] A method for preparing a water-soluble multi-element fertilizer containing dihydroquercetin is prepared according to the above-mentioned water-soluble multi-element fertilizer containing dihydroquercetin, comprising the following steps:

[0078] S1: Mix nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer to obtain nitrogen, phosphorus and potassium compound fertilizer;

[0079] S2: stirring and mixing nitrogen, phosphorus and potassium compound fertilizer, dihydroquercetin, arabinogalactan, humic acid and chitosan oligosaccharide to obtain a mixture A;

[0080] S3: Stirring and mixing the animal manure and the mixture A, adding water to make the water content of 55-65wt%, adding biological bacteria agent, stirring, adopting a stirring method of first low speed and then high speed, wherein the rotation speed during low speed stirring is 45-60rpm, the time is 30-50min, the rotation speed during high speed stirring is 450-550rpm, the time is 30-45min, stirring and stacking evenly for primary fermentation, the temperature during the primary fermentation is 45-53℃, the time is 2-3 days, and a secondary fermentation is carried out after the primary fermentation, turning the pile every two days, the temperature during the secondary fermentation is 60-75℃, the time is 10-16 days, after the fermentation is completed, the fermented material is dried, and granulated to obtain fertilizer granules, the particle size of the fertilizer granules is 2-3mm.

[0081] Comparative Example 3

[0082] The components different from Example 1 are:

[0083] A water-soluble multi-element fertilizer containing dihydroquercetin comprises the following components in parts by weight:

[0084] 75 parts of animal manure, 37.5 parts of nitrogen, phosphorus and potassium triple compound fertilizer, 6.5 parts of arabinogalactan, 7.5 parts of humic acid, 4 parts of chitosan oligosaccharide, and 4.5 parts of biological bacterial agent.

[0085] A method for preparing a water-soluble multi-element fertilizer containing dihydroquercetin is prepared according to the above-mentioned water-soluble multi-element fertilizer containing dihydroquercetin, comprising the following steps:

[0086] S1: Mix nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer to obtain nitrogen, phosphorus and potassium compound fertilizer;

[0087] S2: stirring and mixing nitrogen, phosphorus and potassium compound fertilizer, arabinogalactan, humic acid and chitosan oligosaccharide to obtain a mixture A;

[0088] S3: Stirring and mixing the animal manure and the mixture A, adding water to make the water content of 55-65wt%, adding biological bacteria agent, stirring, adopting a stirring method of first low speed and then high speed, wherein the rotation speed during low speed stirring is 45-60rpm, the time is 30-50min, the rotation speed during high speed stirring is 450-550rpm, the time is 30-45min, stirring and stacking evenly for primary fermentation, the temperature during the primary fermentation is 45-53℃, the time is 2-3 days, and a secondary fermentation is carried out after the primary fermentation, turning the pile every two days, the temperature during the secondary fermentation is 60-75℃, the time is 10-16 days, after the fermentation is completed, the fermented material is dried, and granulated to obtain fertilizer granules, the particle size of the fertilizer granules is 2-3mm.

[0089] Comparative Example 4

[0090] The same components as in Example 1 are followed, and the difference from Example 1 in terms of the preparation method is as follows:

[0091] S5: stirring and mixing the animal manure and the mixture A, adding water to make the water content 55-65wt%, adding the biological agent and the mixture B, stirring, adopting a stirring method of first low speed and then high speed, wherein the rotation speed during low speed stirring is 45-60rpm, the time is 30-50min, the rotation speed during high speed stirring is 450-550rpm, the time is 30-45min, stirring and stacking evenly for primary fermentation, the temperature during primary fermentation is 45-53℃, the time is 2-3 days, after the fermentation is completed, the fermented material is dried, granulated to obtain fertilizer granules, the particle size of the fertilizer granules is 2-3mm.

[0092] Comparative Example 5

[0093] The same components as in Example 1 are followed, and the difference from Example 1 in terms of the preparation method is as follows:

[0094] S5: Stir and mix the animal manure and mixture A, add water to make the water content of 55-65wt%, add biological bacteria agent, stir, and adopt a stirring method of first low speed and then high speed, wherein the speed of low speed stirring is 45-60rpm, the time is 30-50min, the speed of high speed stirring is 450-550rpm, the time is 30-45min, stir evenly and pile up for primary fermentation, the temperature of the primary fermentation is 45-53℃, the time is 2-3 days, add mixture B, stir evenly and pile up for secondary fermentation, turn the pile every two days, the temperature of the secondary fermentation is 53-58℃, the time is 10-16 days, after the fermentation is completed, dry the fermented material, granulate to obtain fertilizer granules, the particle size of the fertilizer granules is 2-3mm.

[0095] Comparative Example 6

[0096] The same components as in Example 1 are followed, and the difference from Example 1 in terms of the preparation method is as follows:

[0097] S5: Stir and mix the animal manure and mixture A, add water to make the water content of 55-65wt%, add biological bacteria agent, stir, and adopt a stirring method of first low speed and then high speed, wherein the speed of low speed stirring is 45-60rpm, the time is 30-50min, the speed of high speed stirring is 450-550rpm, the time is 30-45min, stir evenly and pile up for primary fermentation, the temperature of the primary fermentation is 45-53℃, the time is 2-3 days, add mixture B, stir evenly and pile up for secondary fermentation, turn the pile every two days, the temperature of the secondary fermentation is 77-82℃, the time is 10-16 days, after the fermentation is completed, dry the fermented material, granulate to obtain fertilizer granules, the particle size of the fertilizer granules is 2-3mm.

[0098] Experimental Group 1

[0099] Select tomato seedlings with two leaves and one heart and the same growth, treat them with the fertilizers prepared by the components and preparation methods in each embodiment and each comparative example, blend them with water at a ratio of 1:10, spray them on the tomato plants, and set a blank control group with clear water;

[0100] The treatment method was to spray once every 5 days. One month later, the plant height, total fresh weight, total dry weight, and leaf chlorophyll content of tomatoes were measured. The results are shown in the following table:

[0101]

[0102] Corresponding analysis is performed on the data in the table. The fertilizer prepared by the components and preparation method provided by the present invention has a promoting effect on the plant height, total fresh weight, total dry weight, and leaf chlorophyll content of tomatoes. From the data in Example 1, Example 2 and Example 3, it can be seen that Example 1 is better than Example 2 and Example 3 in terms of plant height and total fresh weight, and Example 2 is better than Example 1 and Example 2 in terms of total dry weight and leaf chlorophyll content. Analysis of Example 1 and Comparative Example 1 shows that the dihydroquercetin added by the present invention can significantly improve the performance of tomato plants in terms of plant height, total fresh weight, total dry weight, and leaf chlorophyll content. Analysis of Example 1 and Comparative Example 2 shows that the addition of trace element inorganic salts can promote the growth of tomato plants in terms of plant height, total fresh weight, total dry weight, As well as the performance of leaf chlorophyll content, analysis of Example 1, Comparative Example 1, Comparative Example 2 and Comparative Example 3 shows that the addition of either dihydroquercetin or trace element inorganic salts can promote the growth of tomato plants. When both are added, the effect of promoting the growth of tomato plants is the best. When neither dihydroquercetin nor trace element inorganic salts are added, the growth of tomato plants is poor. Analysis of Example 1 and Comparative Example 4 shows that the effect of the fertilizer fermented twice is better than that of the fertilizer fermented once, which shows that the preparation method provided by the present invention can significantly improve the growth of tomato plants. Analysis of Example 1, Comparative Example 5 and Comparative Example 6 shows that the temperature set in the second fermentation of the present invention is 60-75°C. When the fermentation temperature is lower than this range or higher than this range, the performance of plant growth is relatively poor.

[0103] Experimental Group 2

[0104] In the test field, the fertilizers prepared in Example 1, Example 2, Example 3 and Comparative Example 1 were used to test the tomato seedlings in the two-leaf and one-heart period. The fertilizer was fertilized at 40 kg / mu. After maturity, the tomato fruits were picked and stored. The storage conditions were an average temperature of 10°C and an average humidity of 60%. The water loss rate and rot rate after 10 days, 20 days, 30 days and 60 days of storage were recorded. The results are shown in the following table:

[0105]

[0106] It can be seen from the data in the table that the fertilizer prepared by the components and preparation method provided by the present invention can extend the storage period of tomatoes to a certain extent, and facilitate the transportation of tomatoes. Analysis of the performance of tomatoes in Example 1 and Comparative Example 1 in terms of water loss rate and rot rate shows that the performance of the fertilizer without adding dihydroquercetin in terms of water loss rate and rot rate of the fruit is worse than that of the fertilizer with added dihydroquercetin in terms of water loss rate and rot rate of the fruit. This shows that the present invention can extend the storage period of tomatoes by adding dihydroquercetin.

[0107] Experimental Group 3

[0108] Five test plots were used. The first four plots were tested with the fertilizers prepared in Example 1, Example 2, Example 3 and Comparative Example 1, respectively. The fertilizers were mixed with water at a ratio of 1:10, and fertilized tomato seedlings in the two-leaf and one-heart period, and sprayed on the tomato plants. The fifth test plot used clear water as a blank control group. After the tomato plants grew to 6-7 leaves, the tomato plants were inoculated with Pseudomonas syringae pathogens. The required concentration of Pseudomonas syringae pathogens was 0.002 μg / mL, and the inoculation method was:

[0109] Make a tiny wound on the tomato leaf or stem (such as scratching it lightly with an inoculation needle or cutting a small hole with scissors), and then inoculate the wound with the pathogen Pseudomonas syringae. Inoculate 50 μL per plant and observe the disease of the plants for 15 consecutive days. The disease incidence is recorded as shown in the following table:

[0110]

[0111]

[0112] It can be seen from the data in the above table that after inoculation with the pathogen Pseudomonas syringae, the incidence rates of Example 1, Example 2 and Example 3 were all 0 at 3 days, 6 days and 9 days. On the other hand, in Comparative Example 1, on the 6th day after inoculation, the incidence rate of tomato plants was 8.3%, and on the 9th day after inoculation, the incidence rate of tomato plants was as high as 60.7%. In the blank control, the incidence rate of tomato plants was 12.4% within 3 days of inoculation with the pathogen, and at 15 days after inoculation, the incidence rate of tomato plants was 98.6%. It can be seen from these data that the fertilizer prepared by the present invention can have a certain anti-disease effect on plants, thereby enhancing the disease resistance of plants during growth.

[0113] Experimental Group 4

[0114] a: Five test plots were used. The first four plots were tested with the fertilizers prepared in Example 1, Example 2, Example 3 and Comparative Example 1, respectively. The fertilizers were mixed with water at a ratio of 1:10, and fertilized tomato seedlings at the two-leaf and one-heart stage. The fertilizers were applied once a week for a total of three times. The fifth plot was treated with clear water as a blank control group. Normal water supply was performed during the growth period of the tomato plants. The quality of the tomatoes was measured when the plants were harvested, including soluble sugars, vitamin C and soluble solids. The average values ​​were shown in the following table:

[0115] Tomato quality with normal water supply:

[0116] Soluble sugar (%) Vitamin C (mg / g) Soluble solids (%) Embodiment 1 7.35 0.23 7.15 Embodiment 2 7.30 0.23 7.21 Embodiment 3 7.01 0.21 7.13 Comparative Example 1 5.34 0.16 5.43 Blank control 3.21 0.10 2.38

[0117] Table a

[0118] b: Five test plots were used. The first four plots were tested with the fertilizers prepared in Example 1, Example 2, Example 3 and Comparative Example 1, respectively. The fertilizers were mixed with water at a ratio of 1:10, and fertilized tomato seedlings in the two-leaf and one-heart period. Fertilization was performed once a week for a total of 3 times. The fifth plot was treated with clear water as a blank control group. Water was cut off from the flowering and fruiting period of the tomato plants (from the opening of the flowers to the beginning of fruit development). Normal water supply was performed after each water cut for one week. The quality of the tomatoes was measured when the plants were harvested, including soluble sugars, vitamin C and soluble solids. The average values ​​were shown in the following table:

[0119] Tomato quality during water shortage:

[0120] Soluble sugar (%) Vitamin C (mg / g) Soluble solids (%) Embodiment 1 6.03 0.17 6.13 Embodiment 2 6.12 0.19 6.21 Embodiment 3 5.95 0.17 6.10 Comparative Example 1 4.11 0.11 4.21 Blank control 1.92 0.07 1.73

[0121] Table b

[0122] From the data in Table a and Table b, it can be seen that during the growth of tomato plants, when water is normally supplied, the fertilizer prepared by the present invention has better performance in promoting the soluble sugar, vitamin C and soluble solids of tomatoes. In Comparative Example 1, since dihydroquercetin is not added, the quality of tomatoes is inferior to that of tomatoes of the present invention. When the tomato plants are deprived of water, the quality of tomatoes using the fertilizer of the present invention is still better than that of tomatoes in Comparative Example 1. This shows that the present invention, through a reasonable component ratio and preparation method, enables the prepared fertilizer to improve the drought resistance of tomato plants to a certain extent.

[0123] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the specification of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A water-soluble multi-element fertilizer containing dihydroquercetin, characterized in that: The composition comprises the following components in parts by weight: 70-80 parts of animal manure, 30-45 parts of nitrogen, phosphorus and potassium compound fertilizer, 0.003-0.007 parts of dihydroquercetin, 5-8 parts of arabinogalactan, 5-10 parts of humic acid, 3-5 parts of chitosan oligosaccharide, 3-9 parts of trace element inorganic salts, and 2-7 parts of biological bacterial agent; The trace element inorganic salt includes ferrous sulfate, manganese sulfate and zinc sulfate, wherein the weight ratio of ferrous sulfate, manganese sulfate and manganese sulfate is (30-35): (5-9): (1-3); The biological bacterial agent includes nitrogen-fixing bacteria, phosphate-solubilizing bacteria and potassium-solubilizing bacteria.

2. The water-soluble multi-element fertilizer containing dihydroquercetin according to claim 1, characterized in that: The weight ratio of nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer in the nitrogen-phosphorus-potassium ternary compound fertilizer is (3-9): (15-20): (10-18).

3. The water-soluble multi-element fertilizer containing dihydroquercetin according to claim 2, characterized in that: The nitrogen fertilizer raw material is at least one of urea, ammonium sulfate, ammonium chloride and ammonium bicarbonate.

4. The water-soluble multi-element fertilizer containing dihydroquercetin according to claim 2, characterized in that: The potash fertilizer raw material is at least one of potassium chloride, potassium sulfate and potassium nitrate.

5. The water-soluble multi-element fertilizer containing dihydroquercetin according to claim 2, characterized in that: The phosphate fertilizer raw material is at least one of monoammonium phosphate, diammonium phosphate, superphosphate and triple superphosphate.

6. The water-soluble multi-element fertilizer containing dihydroquercetin according to claim 1, characterized in that: The molecular weight of the chitosan oligosaccharide is less than or equal to 3000Da.

7. The water-soluble multi-element fertilizer containing dihydroquercetin according to claim 1, characterized in that: The effective live bacteria concentration of nitrogen-fixing bacteria in the biological preparation is 30-100 million per gram of fertilizer, the effective live bacteria concentration of phosphate-solubilizing bacteria in the biological preparation is 10-80 million per gram of fertilizer, and the effective live bacteria concentration of potassium-solubilizing bacteria in the biological preparation is 30-150 million per gram of fertilizer.

8. A method for preparing a water-soluble multi-element fertilizer containing dihydroquercetin, comprising preparing the water-soluble multi-element fertilizer containing dihydroquercetin according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Mix nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer to obtain nitrogen, phosphorus and potassium compound fertilizer; S2: Add ferrous sulfate to warm water at 30-35°C, stir evenly to obtain a ferrous sulfate solution, add manganese sulfate to warm water at 33-37°C, stir evenly to obtain a manganese sulfate solution, add zinc sulfate to warm water at 35-40°C, stir evenly to obtain a zinc sulfate solution; S3: stirring and mixing nitrogen, phosphorus and potassium compound fertilizer, dihydroquercetin, arabinogalactan, humic acid and chitosan oligosaccharide to obtain a mixture A; S4: mixing the ferrous sulfate solution, the manganese sulfate solution and the zinc sulfate solution to obtain a mixture B; S5: Stirring and mixing the animal manure and the mixture A, adding water to make the water content 55-65wt%, adding the biological agent, stirring evenly and piling for primary fermentation, the temperature of the primary fermentation is 45-53°C, and the time is 2-3 days, adding the mixture B, stirring evenly and piling for secondary fermentation, turning the pile every two days, the temperature of the secondary fermentation is 60-75°C, and the time is 10-16 days. After the fermentation is completed, the fermented material is dried and granulated to obtain fertilizer granules.

9. The method for preparing the water-soluble multi-element fertilizer containing dihydroquercetin according to claim 8, characterized in that: In the step S5, after adding the biological agent, stirring is performed by first stirring at a low speed and then at a high speed, wherein the rotation speed during low-speed stirring is 45-60 rpm and the time is 30-50 min, and the rotation speed during high-speed stirring is 450-550 rpm and the time is 30-45 min.

10. The method for preparing the water-soluble multi-element fertilizer containing dihydroquercetin according to claim 8, characterized in that: The particle size of the fertilizer particles is 2-3 mm.

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