Double-control and double-regulation type nutrient storage agent and preparation method thereof

Abstract

The invention provides a double-control and double-regulation type nutrient retention agent and a preparation method thereof.The method comprises the following steps that S1, aluminum potassium sulfate and volcanic source silicon dioxide are weighed and mixed and then subjected to high-speed ball milling, and a nutrient retention material is obtained; s2, weighing allicin, ferulic acid and boric acid, and uniformly mixing to obtain a biological source inhibitor; s3, weighing streptococcus G protein (SPG) and the yeast metabolite, and uniformly mixing to obtain a biological synergistic aid; and S4, uniformly mixing the nutrient retention material, the biological source inhibitor and the biological synergistic additive to obtain the double-control and double-regulation nutrient retention agent. The double-control and double-regulation type nutrient storage agent can be combined with soil nutrients, the nutrient diffusion range is narrowed, nutrient loss is reduced, plant root growth is promoted, root aging and plant lodging are prevented, the soil nutrient storage capacity is improved, and the double-control and double-regulation type nutrient storage agent can be widely applied to various kinds of soil and has a wide application prospect. The method has a wide application prospect and relatively high practical value and economic benefit.

Description

Technical Field

[0001] The present invention relates to the field of soil improvement, and particularly to a dual-control and dual-regulation nutrient retention agent and a preparation method thereof. Background Art

[0002] Nutrient retention and plant growth have always been important research directions in agriculture. In recent years, with the increase in rainfall in China, the leaching loss of fertilizers has increased, resulting in a very prominent phenomenon of fertilizer deficiency in the later growth stage of crops, especially in sandy soils. How to efficiently improve the soil environment, reduce soil nutrient loss, and promote crop growth has become an urgent problem to be solved.

[0003] Existing technical solutions have solved the problems of soil nutrient retention and plant growth to a certain extent, but there are still some problems and limitations. First, most existing technical solutions only focus on single aspects, such as only focusing on slow fertilizer release or only focusing on root growth, lacking comprehensive solutions; second, existing technical solutions have a greater impact on the environment and agricultural ecosystem, and the large use of chemical substances pollutes the environment, while the large use of biodegradable materials increases costs; finally, the preparation methods of existing technical solutions are complex and costly, which is not conducive to large-scale promotion and application in fertilizers.

[0004] Therefore, it is necessary to design a nutrient retention agent and a preparation method thereof that achieve "dual control and dual regulation" in the field of soil improvement, that is, physically control loss, chemically control loss, regulate the soil environment, and regulate the crop state, so as to overcome the defects of the existing technology. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a dual-control and dual-regulation nutrient retention agent and a preparation method thereof.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] On the one hand, the present invention provides a preparation method of a dual-control and dual-regulation nutrient retention agent, including the following steps:

[0008] S1. Weigh potassium alum and volcanic silica in proportion, mix them evenly and then carry out high-speed ball milling to obtain a nutrient retention material;

[0009] S2. Weigh allicin, ferulic acid, and boric acid in proportion, mix them evenly to obtain a biogenic inhibitor;

[0010] S3. Weigh streptococcal G protein (SPG) and yeast metabolites in proportion, mix them evenly to obtain a biological synergistic adjuvant;

[0011] S4. Mix the nutrient retention material, the biogenic inhibitor, and the biological synergistic adjuvant evenly in proportion to obtain a dual-control and dual-regulation nutrient retention agent.

[0012] Preferably, in the step S1, the mass ratio of potassium alum to volcanic silica is 1:(1.5 - 3).

[0013] More preferably, in the step S1, the mass ratio of potassium alum to volcanic silica is 1:2.

[0014] Preferably, in the step S2, the mass ratio of allicin, ferulic acid to boric acid is (0.8 - 1.2):(0.9 - 1.4):(0.6 - 1.1).

[0015] More preferably, the mass ratio of allicin, ferulic acid to boric acid is 1:1:1.

[0016] Preferably, in the step S3, the mass ratio of SPG to yeast metabolite is (0.8 - 1.1):1.

[0017] More preferably, the mass ratio of SPG to yeast metabolite is 1:1.

[0018] Preferably, in the step S1, the particle size of potassium alum and volcanic silica after high - speed ball milling is 10 - 30 microns.

[0019] Preferably, in the step S4, the mass ratio of nutrient retention material, biogenic inhibitor to biological synergistic adjuvant is (1.3 - 1.7):(1.4 - 1.5):(0.9 - 1.2).

[0020] More preferably, in the step S4, the mass ratio of nutrient retention material, biogenic inhibitor to biological synergistic adjuvant is 1.5:1.5:1.

[0021] Preferably, in the step S3, the yeast metabolite includes astaxanthin.

[0022] On the other hand, the present invention also provides a dual - control and dual - regulation type nutrient retention agent, which is prepared by the above - mentioned preparation method of the dual - control and dual - regulation type nutrient retention agent.

[0023] During the compound fertilizer granulation process, adding the dual - control and dual - regulation type nutrient retention agent provided by the present invention can obtain a dual - control and dual - regulation type compound fertilizer.

[0024] The dual - control and dual - regulation type nutrient retention agent and its preparation method provided by the present invention have the following advantages and effects compared with the prior art:

[0025] (1) The dual-control and dual-regulation nutrient retention agent provided by the present invention can combine with soil nutrients, narrow the diffusion range of soil nutrients, block large pores of 100 - 300 μm after water absorption, and further reduce nutrient loss; the biogenic inhibitor can reduce further loss after soil nutrient diffusion; the biological synergistic adjuvant can promote plant root growth, prevent root senescence and plant lodging, help plants intercept more nutrients, and improve the nutrient retention capacity of the soil.

[0026] (2) The dual-control and dual-regulation nutrient retention agent provided by the present invention has no special requirements for soil types and can be widely applied to various types of soil, especially sandy soil, with broad application prospects and high practical value.

[0027] (3) The preparation method of the dual-control and dual-regulation nutrient retention agent provided by the present invention does not require adding a large amount of chemical substances or a large amount of biomass resources as raw materials, has little impact on the environment and agricultural ecosystem, reduces the preparation cost at the same time, and has high economic benefits. Specific Embodiments

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Example 1

[0030] This example provides a preparation method of a dual-control and dual-regulation nutrient retention agent, including the following steps:

[0031] S1. Weigh 10 g of potassium alum and 20 g of volcanic silica respectively, mix them evenly and then perform high-speed ball milling to 10 - 30 μm to obtain the nutrient retention material;

[0032] S2. Weigh 10 g of allicin, 10 g of ferulic acid and 10 g of boric acid respectively, and mix them evenly to obtain the biogenic inhibitor;

[0033] S3. Weigh 10 g of SPG and 10 g of yeast metabolites respectively, mix them evenly to obtain the biological synergistic adjuvant;

[0034] S4. Mix the nutrient retention material, the biogenic inhibitor and the biological synergistic adjuvant evenly to obtain the dual-control and dual-regulation nutrient retention agent.

[0035] Example 2

[0036] This example provides a preparation method of a dual-control and dual-regulation nutrient retention agent, including the following steps:

[0037] S1. Weigh 10 g of potassium alum and 15 g of volcanic silica respectively. After mixing them evenly, grind them in a high-speed ball mill to 10 - 30 μm to obtain a nutrient retention material.

[0038] S2. Weigh 8 g of allicin, 9 g of ferulic acid and 6 g of boric acid respectively. Mix them evenly to obtain a biogenic inhibitor.

[0039] S3. Weigh 8 g of SPG and 10 g of yeast metabolites respectively. After mixing them evenly, obtain a biological synergistic adjuvant.

[0040] S4. Mix 9 g of the nutrient retention material, 13 g of the biogenic inhibitor and 14 g of the biological synergistic adjuvant evenly to obtain a dual-control and dual-regulation nutrient retention agent.

[0041] Example 3

[0042] This example provides a method for preparing a dual-control and dual-regulation nutrient retention agent, which includes the following steps:

[0043] S1. Weigh 10 g of potassium alum and 30 g of volcanic silica respectively. After mixing them evenly, grind them in a high-speed ball mill to 10 - 30 μm to obtain a nutrient retention material.

[0044] S2. Weigh 17 g of allicin, 15 g of ferulic acid and 12 g of boric acid respectively. Mix them evenly to obtain a biogenic inhibitor.

[0045] S3. Weigh 11 g of SPG and 10 g of yeast metabolites respectively. After mixing them evenly, obtain a biological synergistic adjuvant.

[0046] S4. Mix 9 g of the nutrient retention material, 13 g of the biogenic inhibitor and 14 g of the biological synergistic adjuvant evenly to obtain a dual-control and dual-regulation nutrient retention agent.

[0047] Comparative Example 1

[0048] On the basis of Example 1, in step S4, the nutrient retention material is not added, and the remaining steps remain unchanged to prepare a nutrient retention agent.

[0049] Comparative Example 2

[0050] On the basis of Example 1, in step S4, the biogenic inhibitor is not added, and the remaining steps remain unchanged to prepare a nutrient retention agent.

[0051] Comparative Example 3

[0052] On the basis of Example 1, in step S4, the biological synergistic adjuvant is not added, and the remaining steps remain unchanged to prepare a nutrient retention agent.

[0053] The yeast metabolite described in the present invention is the metabolite of the recombinant yeast strain (strain number SyBE_Sc118060, exogenous gene combination is BDC263crtW-AspcrtZ) described in Chinese invention patent ZL201610355056.8, and the product includes astaxanthin.

[0054] Effect test

[0055] 1. Nitrogen dissolution rate test:

[0056] The nutrient retention agents and compound fertilizers prepared in the examples and comparative examples were respectively mixed evenly according to a mass ratio of 1:8 to obtain 6 samples, and the nitrogen dissolution rate was simulated by the soil leaching method.

[0057] The compound fertilizer was selected from the product "Lekaikai 17-17-17" chlorine-based compound fertilizer of Hubei Lekuaikai Fertilizer Co., Ltd.

[0058] The tested soil was selected from Duodao District, Jingmen City, Hubei Province, with a pH value of 7.7 and a bulk density of 1.39 g / cm 3 .

[0059] The test results are shown in Table 1.

[0060] Table 1

[0061]

[0062] As can be seen from Table 1, Examples 1-3 have a lower nitrogen dissolution rate compared with Comparative Examples 1-3; among the three examples, Example 1 has a relatively lower nitrogen dissolution rate.

[0063] 2. Nitrification inhibition rate test:

[0064] Weigh 0.6 g of the nutrient retention agents prepared in the examples and comparative examples respectively, add 30 mL of distilled water, shake well until completely dissolved to obtain 6 nutrient retention agent solutions for standby.

[0065] Weigh 21 tested soil samples in units of 5 g and place them in 50 mL Erlenmeyer flasks. Take 6 groups of 18 flasks with 3 flasks in each group. Add 10 mL of the above 6 nutrient retention agent solutions to each group of Erlenmeyer flasks respectively, and take another 3 flasks each containing 1 portion of the tested soil and add 10 mL of distilled water as a control.

[0066] Add 10 mL of ammonium sulfate solution with an NH4 + -N content of 25 mg / L to all tested soil samples, and add 0.5 mL of 2 mol / L sodium chlorate solution. Mix well, cover the bottle cap, and shake and culture on a shaker for 5 h. After shaking, filter, and use N-(1-naphthyl)-ethylenediamine photometric method to determine the content of NO2 - -N in the filtrate.

[0067] Calculate the inhibitory effect of 6 nutrient retention agent solutions on the nitrification of the tested soil samples. The calculation formula is: S = (A - B) × 100% / A, where S is the inhibition rate of the nutrient retention agent solution on soil nitrification, and the unit is %; A is the average value of the NO2 - -N content in the control group samples, and the unit is mg / L; B is the average value of the NO2 - -N content after adding the nutrient retention agent solution, and the unit is mg / L.

[0068] The test results are shown in Table 2.

[0069] Table 2

[0070]

[0071] As can be seen from Table 2, Examples 1-3 have a higher nitrification inhibition rate compared to Comparative Examples 1-3; when comparing the three examples with each other, Example 1 has a stronger inhibitory effect on soil nitrification. From the measured values and the magnitudes of the standard deviations, it can be seen that the data deviations for the 3 replicates are not large, and the standard deviations are all within 0.1%. It can be seen that the data measured by this method have a small deviation, high precision, and good reproducibility.

[0072] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0073] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a dual-control and dual-adjustment nutrient storage agent, characterized in that: The following steps are involved: S1. Weigh potassium aluminum sulfate and volcanic silicon dioxide in proportion, mix them evenly and then perform high-speed ball milling to obtain a nutrient storage material; S2, weighing allicin, ferulic acid, and boric acid in proportion, and mixing them evenly to obtain a biogenic inhibitor; S3, weighing streptococcal G protein (SPG) and yeast metabolites according to proportion, mixing them evenly to obtain a biological enhancement agent; S4. After the nutrient storage material, the biogenic inhibitor and the biological enhancement aid are uniformly mixed in proportion, a double-control and double-adjustment type nutrient storage agent can be obtained.

2. The method for preparing a dual-control and dual-adjustment nutrient storage agent according to claim 1, characterized in that: In the step S1, the mass ratio of potassium aluminum sulfate to volcanic silica is 1:(1.5-3); in the step S2, the mass ratio of allicin, ferulic acid and boric acid is (0.8-1.2):(0.9-1.4):(0.6-1.1); in the step S3, the mass ratio of SPG to yeast metabolites is (0.8-1.1):

1.

3. The method for preparing a dual-control and dual-adjustment nutrient storage agent according to claim 2, characterized in that: In the step S1, the mass ratio of potassium aluminum sulfate to volcanic silica is 1:2; in the step S2, the mass ratio of allicin, ferulic acid and boric acid is 1:1:1; in the step S3, the mass ratio of SPG to yeast metabolites is 1:

1.

4. The method for preparing a dual-control and dual-adjustment nutrient storage agent according to claim 1, characterized in that: In the step S1, the particle size of potassium aluminum sulfate and volcanic silicon dioxide after high-speed ball milling is 10-30 microns.

5. The method for preparing a dual-control and dual-adjustment nutrient storage agent according to claim 1, characterized in that: In the step S4, the mass ratio of the nutrient storage material, the biogenic inhibitor and the biosynergist is (1.3-1.7):(1.4-1.5):(0.9-1.2).

6. The method for preparing a dual-control and dual-adjustment nutrient storage agent according to claim 5, characterized in that: In the step S4, the mass ratio of the nutrient storage material, the biogenic inhibitor and the biosynergist is 1.5:1.5:

1.

7. The method for preparing a dual-control and dual-adjustment nutrient storage agent according to claim 1, characterized in that: In the step S3, the yeast metabolites include astaxanthin.

8. A dual-control and dual-adjustment nutrient storage agent, characterized in that: The invention is prepared by the preparation method of the double-control double-adjustment nutrient storage agent described in any one of claims 1 to 7.

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