Silicon-containing humic acid water-soluble fertilizer and preparation method thereof

Abstract

The invention relates to the field of agricultural fertilizers, in particular to a silicon-containing humic acid water-soluble fertilizer and a preparation method thereof.The silicon-containing humic acid water-soluble fertilizer is prepared from, by weight, 0.3%-0.8% of an HH2017 dispersing agent, 3%-8% of potassium humate, 6%-10% of monopotassium phosphate, 28%-35% of anhydrous potassium silicate, 0.2%-0.4% of a chelating agent, 0.2%-0.4% of a surfactant and the balance water; the silicon-containing humic acid water-soluble fertilizer disclosed by the invention contains a plurality of components, can provide sufficient nutrition for crops, especially for silicon-loving crops, and can effectively promote the growth of the crops. And the potassium humate is rich in a large amount of organic macromolecular compounds such as active functional groups including carboxyl, phenolic hydroxyl and the like, has relatively strong adsorption, exchange, complexing and chelating capabilities, and can promote the absorption and utilization of nutrients on the surfaces of crop leaves by matching with silicate, a surfactant and a chelating agent, so that the nutrient utilization rate is increased. A large amount of silicon elements can be supplemented for crops, and meanwhile, macroelements phosphorus and potassium can be supplemented, so that the effects of increasing the crop yield and improving the stress resistance of the crops are achieved.

Description

Technical Field

[0001] The present invention relates to the field of agricultural fertilizers, and particularly to a silicon-containing humic acid water-soluble fertilizer and a preparation method thereof. Background Art

[0002] Silicon is a beneficial nutrient element for plants. Especially in some silicon-loving gramineous crops such as rice, wheat, and corn, the role of silicon is more obvious. Applying silicon fertilizer can enhance the mechanical strength of plants, improve the disease resistance and insect resistance of plants, promote photosynthesis and nutrient absorption, help regulate the soil pH value and improve the soil structure, and advance maturity and increase yield.

[0003] At present, the main types of silicon fertilizers on the market are mainly divided into two categories: citrate-soluble silicon fertilizers and water-soluble silicon fertilizers. Citrate-soluble silicon fertilizers refer to silicon fertilizers that are insoluble in water but can be absorbed by plants after being dissolved in acid. They are mostly processed from steel mill waste slag, fly ash, and ore through high-temperature calcination processes. Generally, the application amount is large, the labor intensity is high, and the effect is slow. They are suitable for soil basal application. Water-soluble silicon fertilizers mainly include potassium silicate, sodium silicate, sodium persilicate, and sodium metasilicate, etc. These all belong to quick-acting silicon fertilizers, with a fast effect and can quickly provide the required silicon element for plants. However, water-soluble silicon fertilizers also have some deficiencies: First, the pH value is relatively high, which may affect the soil acid-base balance and is not conducive to the long-term stability of the soil ecosystem. Second, the price is relatively high, increasing the agricultural production cost. Third, applying water-soluble silicon fertilizers containing sodium ions may damage the soil aggregate structure, cause soil compaction, and there are clear limit requirements for the sodium ion content in the silicon-containing water-soluble fertilizer. Summary of the Invention

[0004] To solve the above problems, the present invention provides a silicon-containing humic acid water-soluble fertilizer and a preparation method thereof. The silicon-containing humic acid water-soluble fertilizer is alkaline, and at the same time is rich in humic acid and the beneficial element silicon, can neutralize the soil acidity, improve the soil organic matter level, improve the soil aggregate structure, increase the soil buffering capacity, and has a great effect on the improvement of acidic soil.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A silicon-containing humic acid water-soluble fertilizer, calculated by weight percentage, HH2017 dispersant 0.3% - 0.8%, potassium humate 3% - 8%, potassium dihydrogen phosphate 6% - 10%, potassium silicate anhydrous 28% - 35%, chelating agent 0.2% - 0.4%, surfactant 0.2% - 0.4%, and the balance is water.

[0006] A preparation method of a silicon-containing humic acid water-soluble fertilizer,

[0007] comprises the following steps:

[0008] Step 1: Take 0.3% - 0.6% of HH2017 dispersant and 3% - 8% of potassium humate by weight percentage, slowly add them into water, and stir until completely dissolved to obtain mother liquor A;

[0009] Step 2: Take 6% - 10% of potassium dihydrogen phosphate by weight percentage, slowly add it into mother liquor A, and stir until completely dissolved to obtain mother liquor B;

[0010] Step 2: Take 28% - 35% of potassium silicate anhydrous and 0.2% - 0.4% of chelating agent by weight percentage, slowly add them into mother liquor B, and stir for chelation reaction for 30 minutes to obtain mother liquor C;

[0011] Step 3: Slowly pour mother liquor C into a colloid mill, and after grinding on the machine, obtain mother liquor D;

[0012] Step 4: Take 0.2% - 0.5% of surfactant by weight percentage, add it into mother liquor D, stir for 20 minutes, and then let it stand for 60 minutes to obtain the finished product.

[0013] Furthermore, the HH2017 dispersant is one or a mixture of polypropylene oxide and polyether polyol.

[0014] Furthermore, the chelating agent is one or a combination of ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, and ethylenediamine ortho-phenol acetic acid.

[0015] Furthermore, the surfactant is one or a combination of polyether-modified trisiloxane, sodium dodecyl sulfate, and Tween 80.

[0016] The beneficial effects of the present invention are as follows:

[0017] The silicon-containing humic acid water-soluble fertilizer in the present invention contains multiple components, which can provide sufficient nutrients for crops, especially silicon-loving crops, and can effectively promote the growth of crops. And potassium humate is rich in a large number of active functional groups such as carboxyl groups and phenolic hydroxyl groups, which are organic macromolecular compounds with strong adsorption, exchange, complexation, and chelation abilities. When combined with silicate, surfactant, and chelating agent, it can promote the absorption and utilization of nutrients on the surface of crop leaves, and the nutrient utilization rate is improved. While a large amount of silicon element in crops is supplemented, a large amount of elements phosphorus and potassium can also be supplemented, which plays a role in increasing crop yield and improving the stress resistance of crops.

[0018] The silicon-containing humic acid water-soluble fertilizer in the present invention is alkaline, and is rich in humic acid and beneficial element silicon at the same time. It can neutralize soil acidity, improve soil organic matter level, improve soil aggregate structure, increase soil buffering capacity, and has a great effect on the improvement of acidic soil. Description of the Drawings

[0019] Figure 1 It is a bar chart of silicon content Detailed implementation manners

[0020] Examples 1 - 6 of the present invention are enumerated to further illustrate the specific implementation process and effects of the present invention in detail.

[0021] Example 1

[0022] Step 1. Take 0.3% of polypropylene oxide and 3% of potassium humate by weight percentage, slowly add them to water, and stir until completely dissolved to obtain mother liquor A.

[0023] Step 2. Take 6% of potassium dihydrogen phosphate by weight percentage, slowly add it to mother liquor A, and stir until completely dissolved to obtain mother liquor B.

[0024] Step 3. Take 28% of potassium silicate anhydrous and 0.2% of ethylenediaminetetraacetic acid (EDTA) by weight percentage, slowly add them to mother liquor B, and stir for a chelation reaction for 30 minutes to obtain mother liquor C.

[0025] Step 4. Slowly pour mother liquor C into a colloid mill, and grind it on the machine to obtain mother liquor D.

[0026] Step 5. Take 0.2% of polyether-modified trisiloxane by weight percentage, add it to mother liquor D, slowly stir for 20 minutes, and then let it stand for 60 minutes to obtain a silicon-containing humic acid water-soluble fertilizer.

[0027] Example 2

[0028] Step 1. Take 0.6% of polyether polyol and 8% of potassium humate by weight percentage, slowly add them to water, and stir until completely dissolved to obtain mother liquor A.

[0029] Step 2. Take 10% of potassium dihydrogen phosphate by weight percentage, slowly add it to mother liquor A, and stir until completely dissolved to obtain mother liquor B.

[0030] Step 3. Take 35% of potassium silicate anhydrous and 0.4% of diethylenetriaminepentaacetic acid (DTPA) by weight percentage, slowly add them to mother liquor B, and stir for a chelation reaction for 30 minutes to obtain mother liquor C.

[0031] Step 4. Slowly pour mother liquor C into a colloid mill, and grind it on the machine to obtain mother liquor D.

[0032] Step 5. Take 0.5% of sodium dodecyl sulfate by weight percentage, add it to mother liquor D, slowly stir for 20 minutes, and then let it stand for 60 minutes to obtain a silicon-containing humic acid water-soluble fertilizer.

[0033] Example 3

[0034] Step 1. Take 0.5% of polyether polyol and 6% of potassium humate by weight percentage, slowly add them to water, and stir until completely dissolved to obtain mother liquor A.

[0035] Step 2. Take 7% potassium dihydrogen phosphate by weight percentage, slowly add it to mother liquor A, and stir until completely dissolved to obtain mother liquor B.

[0036] Step 3. Take 30% potassium silicate anhydrous and 0.3% ethylenediamine ortho-phenol acetic acid (EDDHA) by weight percentage, slowly add them to mother liquor B, and stir for a chelation reaction for 30 minutes to obtain mother liquor C.

[0037] Step 4. Slowly pour mother liquor C into a colloid mill, and grind it on the machine to obtain mother liquor D.

[0038] Step 5. Take 0.4% surfactant Tween 80 by weight percentage, add it to mother liquor D, stir slowly for 20 minutes, and then let it stand for 60 minutes to obtain a silicon-containing humic acid water-soluble fertilizer.

[0039] Example 4

[0040] Step 1. Take 0.3% polyether polyol and 3% potassium humate by weight percentage, slowly add them to water, and stir until completely dissolved to obtain mother liquor A.

[0041] Step 2. Take 8% potassium dihydrogen phosphate by weight percentage, slowly add it to mother liquor A, and stir until completely dissolved to obtain mother liquor B.

[0042] Step 3. Take 32% potassium silicate anhydrous and 0.3% diethylenetriaminepentaacetic acid (DTPA) by weight percentage, slowly add them to mother liquor B, and stir for a chelation reaction for 30 minutes to obtain mother liquor C.

[0043] Step 4. Slowly pour mother liquor C into a colloid mill, and grind it on the machine to obtain mother liquor D.

[0044] Step 5. Take 0.3% sodium dodecyl sulfate by weight percentage, add it to mother liquor D, stir slowly for 20 minutes, and then let it stand for 60 minutes to obtain a silicon-containing humic acid water-soluble fertilizer.

[0045] Example 5

[0046] Step 1. Take 0.5% polypropylene oxide and 8% potassium humate by weight percentage, slowly add them to water, and stir until completely dissolved to obtain mother liquor A.

[0047] Step 2. Take 7% potassium dihydrogen phosphate by weight percentage, slowly add it to mother liquor A, and stir until completely dissolved to obtain mother liquor B.

[0048] Step 3. Take 29% potassium silicate anhydrous and 0.4% diethylenetriaminepentaacetic acid (DTPA) by weight percentage, slowly add them to mother liquor B, and stir for a chelation reaction for 30 minutes to obtain mother liquor C.

[0049] Step 4. Slowly pour mother liquor C into a colloid mill, and after grinding on the machine, mother liquor D is obtained.

[0050] Step 5. Take 0.4% Tween 80 by weight percentage, add it to mother liquor D, stir slowly for 20 minutes, and then let it stand for 60 minutes to obtain a silicon-containing humic acid water-soluble fertilizer.

[0051] Example 6

[0052] Step 1. Take 0.3% of polypropylene oxide, 0.3% of polyether polyol, and 8% of potassium humate by weight percentage, slowly add them to water, and stir until completely dissolved to obtain mother liquor A.

[0053] Step 2. Take 10% of potassium dihydrogen phosphate by weight percentage, slowly add it to mother liquor A, and stir until completely dissolved to obtain mother liquor B.

[0054] Step 3. Take 30% of potassium silicate anhydrous, 0.2% of ethylenediaminetetraacetic acid (EDTA), and 0.2% of diethylenetriaminepentaacetic acid (DTPA) by weight percentage, slowly add them to mother liquor B, and stir for chelation reaction for 30 minutes to obtain mother liquor C.

[0055] Step 4. Slowly pour mother liquor C into a colloid mill, and after grinding on the machine, mother liquor D is obtained.

[0056] Step 5. Take 0.2% of polyether-modified trisiloxane and 0.2% of sodium dodecyl sulfate by weight percentage, add them to mother liquor D, stir slowly for 20 minutes, and then let it stand for 60 minutes to obtain a silicon-containing humic acid water-soluble fertilizer.

[0057] The following conducts corresponding experiments on the silicon-containing humic acid water-soluble fertilizers for Examples 1 - 6. The following are the specific experiments:

[0058] 1. Experiment location: Bense Rice Experimental Field, Paitan Town, Zengcheng District, Guangzhou City, Guangdong Province

[0059] 2. Experiment time: Sowing on March 13, 2024, transplanting on April 5, and harvesting on July 15

[0060] 3. Experimental Design: The experiment was divided into 7 treatments: CK, No. 1, No. 2, No. 3, No. 4, No. 5, and No. 6. Each treatment had 3 replicates, and each replicate was 2 mu of land. The control CK was planted according to the local farmers' planting habits. The plots of No. 1, 2, 3, 4, 5, and 6 were respectively applied with the silicon-containing humic acid water-soluble fertilizers of Example 1, Example 2, Example 3, Example 4, Example 5, and Example 6. During the tillering stage of rice, the water-soluble fertilizers of the formulations of Example 1 - Example 6 were sprayed according to the experimental design, and sprayed continuously for 2 times with an interval of 15 days. Then, the daily management of rice was carried out until the rice matured. After the rice matured, the rice was harvested, and the yield was statistically analyzed for each experimental plot, and the average value was calculated. The potassium and silicon contents in the grains were respectively detected and the average value was calculated.

[0061] Experimental Design

[0062] Number CK 1 2 3 4 5 6 Area (mu) 2 2 2 2 2 2 2 Replicate 3 3 3 3 3 3 3 Treatment Control Example 1 Example 2 Example 3 Example 4 Example 5 Example 6

[0063] 4. Experimental Data:

[0064] Data of yield, potassium content, and silicon content of the rice control plot

[0065] Number Rice Yield (kg / mu) Potassium Content (mk / kg) Silicon Content (mk / kg) CK-1 590.4 2.59 3.23 CK-2 654.3 2.89 3.48 CK-3 601.5 2.98 3.64 Average 615.4 2.82 3.45

[0066] Data of yield, potassium content, and silicon content of the rice plot No. 1

[0067] Number Rice Yield (kg / mu) Potassium Content (mk / kg) Silicon Content (mk / kg) 1-1 701.2 3.12 4.12 1-2 649.5 3.34 4.35 1-3 612.8 2.99 4.22 Average 654.5 3.15 4.23

[0068] Data of yield, potassium content, and silicon content of the rice plot No. 2

[0069] Number Rice Yield (kg / mu) Potassium Content (mk / kg) Silicon Content (mk / kg) 2-1 636.4 4.01 5.11 2-2 689.7 4.45 5.55 2-3 699.8 3.9 5.3 Average 675.3 4.12 5.32

[0070] Data of yield, potassium content, and silicon content of the rice plot No. 3

[0071] Number Rice Yield (kg / mu) Potassium Content (mk / kg) Silicon Content (mk / kg) 3-1 688.6 2.95 4.19 3-2 639.7 3.21 4.02 3-3 775.3 2.87 4.15 Average 701.2 3.01 4.12

[0072] Data of yield, potassium content, and silicon content of the rice plot No. 4

[0073]

[0074]

[0075] Data of yield, potassium content, and silicon content of the rice plot No. 5

[0076] Number Rice Yield (kg / mu) Potassium Content (mk / kg) Silicon Content (mk / kg) 5-1 699.7 2.89 5.47 5-2 679.5 3.06 5.97 5-3 677.9 2.84 6.20 Average 685.7 2.93 5.88

[0077] Data of yield, potassium content, and silicon content of the rice plot No. 6

[0078] Number Rice Yield (kg / mu) Potassium Content (mk / kg) Silicon Content (mk / kg) 6-1 628.4 4.14 6.55 6-2 698.5 4.13 6.37 6-3 699.6 4.36 6.1 Average 675.5 4.21 6.34

[0079] Summary Table of Various Indexes of Rice after Applying Silicon-Containing Humic Acid Water Soluble Fertilizer

[0080] Number Treatment Rice Yield (kg / mu) Potassium Content (mk / kg) Silicon Content (mk / kg) Control - 615.4 2.82 3.45 1 Example 1 654.5 3.15 4.23 2 Example 2 675.3 4.12 5.32 3 Example 3 701.2 3.01 4.12 4 Example 4 666.4 4.88 3.59 5 Example 5 685.7 2.93 5.88 6 Example 6 675.5 4.21 6.34

[0081] Yield Analysis:

[0082] 1. Rice Yield Analysis Table

[0083] Number Treatment Rice Yield (kg / mu) Increase in Yield Compared to CK (kg / mu) Yield Increase Rate CK Control 615.4 - - 1 Example 1 654.5 39.1 6.35％ 2 Example 2 675.3 60.9 9.89％ 3 Example 3 701.2 85.8 14.00％ 4 Example 4 666.4 51 8.29％ 5 Example 5 685.7 70.3 11.42％ 6 Example 6 675.5 60.1 9.76％

[0084] Example 1:

[0085] The yield increased by 6.35% compared with CK, and the yield increase effect was significant. The formula components in Example 1, such as potassium silicate anhydrous, potassium dihydrogen phosphate, and the combination of chelating agent and surfactant, had a certain promoting effect on rice growth. Although the yield increase range was not the largest, it indicated that this formula had the potential to increase yield.

[0086] Example 2:

[0087] The yield increased by 9.89% compared with CK, and the yield increase effect was more obvious than that in Example 1. The proportion of potassium silicate anhydrous in Example 2 was relatively high (35%), which helped to improve the silicon absorption of rice and thus promoted growth. At the same time, the combination of surfactants used (polyether-modified trisiloxane and sodium dodecyl sulfate) also had a positive impact on the yield.

[0088] Example 3:

[0089] The yield was the highest, increasing by 14.00% compared with CK. The proportion of potassium dihydrogen phosphate in Example 3 was moderate (7%), and ethylenediamine ortho-phenol acetic acid (EDDHA) was used as the chelating agent. EDDHA is a highly efficient metal chelating agent that can improve the effectiveness of metal ions in fertilizers, thus significantly promoting rice growth and increasing yield.

[0090] Example 4:

[0091] The yield increased by 8.29% compared with CK, and the yield increase effect was slightly lower than that in Example 2. Although the proportion of potassium silicate anhydrous in Example 4 was also relatively high (32%), the chelating agent used was diethylenetriaminepentaacetic acid (DTPA), which was slightly less effective than EDDHA in promoting the absorption of nutrient elements by rice. In addition, the differences in other formula components also had an impact on the yield.

[0092] Example 5:

[0093] The yield increased by 11.42% compared with CK, and the yield increase effect was significant. The proportion of potassium silicate anhydrous in Example 5 was 29%, which was moderate, and 0.4% of DTPA was used as the chelating agent. This combination promoted the absorption and utilization of nutrient elements by rice to a certain extent, thus increasing the yield.

[0094] Example 6:

[0095] The yield increased by 9.76% compared to CK, which is similar to Example 2. The proportion of potassium silicate anhydrous in Example 6 is 30%, and EDDHA is used as a chelating agent. This is similar to some of the formulation components in Example 2, but due to differences in other formulation components (such as the proportion or type of surfactant), the yield is slightly lower than that of Example 3 but higher than other examples.

[0096] II. Potassium content analysis table

[0097] Number Treatment Potassium Content (mk / kg) Increase Compared to CK (mk / kg) Growth Rate CK Control 2.82 - - 1 Example 1 3.15 0.33 11.70％ 2 Example 2 4.12 1.3 46.10％ 3 Example 3 3.01 0.19 6.74％ 4 Example 4 4.88 2.06 73.05％ 5 Example 5 2.93 0.11 3.90％ 6 Example 6 4.21 1.39 49.29％

[0098] Example 1:

[0099] The potassium content increased compared to the control group, but the increase was not the largest. The content of potassium dihydrogen phosphate in Example 1 was at the lower end of the formulation ratio range (6%), and the proportion of the chelating agent ethylenediaminetetraacetic acid (EDTA) was also low (0.2%). This limited the release and absorption efficiency of potassium elements. Although the addition of potassium humate contributed to the supply of potassium elements, the overall formulation tended to balance nutrition rather than highlighting a single element.

[0100] Example 2:

[0101] The potassium content was the highest among all examples, showing a significant increase compared to the control group. The content of potassium dihydrogen phosphate in Example 2 reached the upper end of the formulation ratio range (10%), and the proportion of the chelating agent diethylenetriaminepentaacetic acid (DTPA) was also high (0.4%). As an efficient chelating agent, DTPA can significantly improve the availability of potassium elements, making them more easily absorbed by plants. In addition, the high proportion of potassium humate also promoted the release and utilization of potassium elements.

[0102] Example 3:

[0103] The potassium content increased, but was lower than that of Example 2. Although the content of potassium dihydrogen phosphate in Example 3 was similar to that of Example 2 (7%), the proportion of the chelating agent ethylenediamine ortho-phenol acetic acid (EDDHA) was the same as that of Example 1 (0.3%), which affected the release and absorption efficiency of potassium elements. At the same time, the use of the surfactant Tween 80 also had a certain impact on the absorption of potassium elements, but its specific mechanism of action needs further exploration.

[0104] Example 4:

[0105] The potassium content was relatively high, second only to Example 2. The content of potassium dihydrogen phosphate in Example 4 was moderate (8%), and the proportion of the chelating agent DTPA was also high (0.3%). This combination achieved a better balance in the release and absorption efficiency of potassium elements in the soil. In addition, the addition of potassium humate also promoted the utilization of potassium elements.

[0106] Example 5:

[0107] Although the potassium content has increased, it is relatively low compared to other examples. The potassium dihydrogen phosphate content in Example 5 is similar to that in Example 3 (7%), but although the proportion of the chelating agent DTPA is high (0.4%), due to the proportion or interaction of other components, the release and absorption efficiency of potassium elements is affected to a certain extent. The use of the surfactant Tween 80 also has a certain impact on the results.

[0108] Example 6:

[0109] The potassium content is relatively high, similar to that in Example 4. The potassium dihydrogen phosphate content in Example 6 is moderate (10%), and two chelating agents, EDTA and DTPA, are used simultaneously, which promotes the release and absorption of potassium elements in the soil. In addition, the combined use of the surfactants polyether-modified trisiloxane and sodium dodecyl sulfate also has a positive impact on the absorption of potassium elements.

[0110] III. Silicon content analysis table (which can also be referred to Figure 1 as the corresponding silicon content bar chart)

[0111] Number Treatment Silicon Content (mk / kg) Increase Compared to CK (mk / kg) Growth Rate CK Control 3.45 - - 1 Example 1 4.23 0.78 22.58％ 2 Example 2 5.32 1.87 54.17％ 3 Example 3 4.12 0.67 19.42％ 4 Example 4 3.59 0.14 4.05％ 5 Example 5 5.88 2.43 70.43％ 6 Example 6 6.34 2.89 83.77％

[0112] Example 1:

[0113] The silicon content has increased compared to the control group, but the increase is not the largest. The potassium silicate anhydrous content in Example 1 is at the lower end of the formulation ratio range (28%), which limits the supply of silicon elements. Although the addition of potassium humate and the chelating agent EDTA helps the release and absorption of silicon elements, the overall formulation is more inclined to balance nutrition rather than highlighting a single element.

[0114] Example 2:

[0115] The silicon content is the highest among all examples, and it has increased significantly compared to the control group. The potassium silicate anhydrous content in Example 2 reaches the upper end of the formulation ratio range (35%), providing an adequate source of silicon elements for rice. At the same time, the efficient chelating effect of the chelating agent DTPA further promotes the release and absorption of silicon elements in the soil. In addition, the addition of potassium humate also indirectly promotes the utilization of silicon elements by improving the soil environment.

[0116] Example 3:

[0117] The silicon content has increased, but is lower than that in Example 2. The content of potassium silicate anhydrous in Example 3 is moderate (30%), but the chelating efficiency of the chelating agent EDDHA is slightly lower than that of DTPA, which has a certain impact on the release and absorption efficiency of silicon elements. Although the addition of the surfactant Tween 80 has a certain positive effect on the absorption of silicon elements, the overall effect is still inferior to that of Example 2.

[0118] Example 4:

[0119] The silicon content is relatively high, but slightly lower than that in Example 2. The content of potassium silicate anhydrous in Example 4 (32%) is similar to that in Example 2, but the proportion of the chelating agent DTPA (0.3%) is slightly lower than that in Example 2 (0.4%). This slight difference leads to a decrease in the release and absorption efficiency of silicon elements in the soil. However, the addition of potassium humate and the surfactant still has a positive effect on the absorption of silicon elements.

[0120] Example 5:

[0121] The silicon content is significantly higher than that of the control group, but relatively lower than that of other examples. The content of potassium silicate anhydrous in Example 5 (29%) is at the lower end of the formulation ratio range, which limits the supply of silicon elements. Although the proportion of the chelating agent DTPA is relatively high (0.4%), due to the limitation of the potassium silicate content, the overall absorption effect of silicon elements is affected to a certain extent. The addition of the surfactant Tween 80 has a limited effect on the absorption of silicon elements.

[0122] Example 6:

[0123] The silicon content is relatively high and close to that in Example 2. The content of potassium silicate anhydrous in Example 6 is moderate (30%), and two chelating agents, EDTA and DTPA, are used simultaneously. This combination promotes the release and absorption of silicon elements in the soil. In addition, the combined use of the surfactant polyether-modified trisiloxane and sodium dodecyl sulfate also has a positive effect on the absorption of silicon elements. Although the potassium silicate content is not the highest, the combination of highly efficient chelating agents and surfactants results in a relatively good absorption effect of silicon elements.

[0124] IV. Recommended Usage Scenarios

[0125] The formulations of different examples vary in component ratios, which leads to different usage effects of the fertilizers in different environments. Therefore, for different environments and usage requirements, it is recommended to adopt the formulations of different examples.

[0126] 1. Acidic Soil Environment

[0127] Recommended Examples: Example 1, Example 2, Example 5, acidic soil environment is not conducive to plant growth, and it is easy to cause soil nutrient loss and crop growth stagnation. Silicon-containing humic acid water-soluble fertilizer is rich in humic acid and beneficial element silicon, which can neutralize soil acidity, increase soil organic matter level, improve soil aggregate structure, and increase soil buffering capacity. The potassium humate content in Example 1, Example 2 and Example 5 is relatively high, which helps to regulate soil pH and provide sufficient nutrients to support crop growth.

[0128] 2. Crops with high silicon demand (such as rice, wheat, corn and other gramineous crops)

[0129] Recommended Examples: Example 2, Example 3, Example 6, silicon is a beneficial nutrient element for these crops, which can enhance the mechanical strength of plants, improve disease resistance and insect resistance, and promote photosynthesis and nutrient absorption. The anhydrous potassium silicate content in Example 2, Example 3 and Example 6 is relatively high, 35%, 30% and 30% respectively, which can fully meet the silicon requirements of these crops and promote the healthy growth of crops.

[0130] 3. During the growth period of crops that require rapid nutrient replenishment

[0131] Recommended Examples: Example 3, Example 4, Example 5: During the rapid growth period of crops, the demand for nutrients is large and urgent. The fertilizer formulas in Example 3, Example 4 and Example 5 have high nutrient content and good absorption and utilization efficiency, and can quickly provide the required nutrients for crops, promoting the healthy growth and development of crops.

[0132] 4. Agricultural producers who have certain considerations on fertilizer costs

[0133] Recommended embodiments: Embodiment 1, Embodiment 3, Embodiment 5. Although the fertilizer costs of different embodiments vary due to factors such as raw material prices and preparation processes, the raw materials in Embodiment 1, Embodiment 3, and Embodiment 5 are relatively common and relatively low in cost (relative to some special raw materials in Embodiment 2 and Embodiment 6), and therefore are more suitable for agricultural producers who have certain considerations for fertilizer costs. Of course, when choosing, it is also necessary to comprehensively consider factors such as crop needs, soil environment, and expected production benefits.

[0134] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A silicon-containing humic acid water-soluble fertilizer, characterized in that: Calculated by weight percentage, HH2017 dispersant 0.3%-0.8%, potassium humate 3%-8%, potassium dihydrogen phosphate 6%-10%, anhydrous potassium silicate 28%-35%, chelating agent 0.2%-0.4%, surfactant 0.2%-0.4%, and the balance is water.

2. A method for preparing the silicon-containing humic acid water-soluble fertilizer according to claim 1, characterized in that: The steps include: Step 1: Take 0.3% to 0.6% of HH2017 dispersant and 3% to 8% of potassium humate by weight, slowly add into water, stir until completely dissolved, and obtain mother solution A; Step 2: Take 6% to 10% potassium dihydrogen phosphate by weight, slowly add it to mother solution A, and stir until it is completely dissolved to obtain mother solution B; Step 2: Slowly add 28% to 35% of anhydrous potassium silicate and 0.2% to 0.4% of a chelating agent by weight into the mother solution B, and stir for chelation reaction for 30 minutes to obtain a mother solution C; Step 3: Slowly pour the mother liquor C into the colloid mill and grind it to obtain the mother liquor D; Step 4: Take 0.2% to 0.5% of the surfactant by weight, add it to the mother solution D, stir for 20 minutes, and then let it stand for 60 minutes to obtain the finished product.

3. The method for preparing a silicon-containing humic acid water-soluble fertilizer according to claim 2, characterized in that: HH2017 dispersant is one or a mixture of polypropylene oxide and polyether polyol.

4. The method for preparing a silicon-containing humic acid water-soluble fertilizer according to claim 2, characterized in that: The chelating agent is one or more combinations of ethylenediaminetetraacetic acid, diethyltriaminepentaacetic acid, and ethylenediamine-o-phenolacetic acid.

5. The method for preparing a silicon-containing humic acid water-soluble fertilizer according to claim 2, characterized in that: The surfactant is one or more combinations of polyether-modified trisiloxane, sodium lauryl sulfate and Tween 80.

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