Element liquid fertilizer for promoting nutrient absorption and preparation method thereof

Abstract

The invention discloses an element liquid fertilizer for promoting nutrient absorption and a preparation method thereof, and belongs to the technical field of fertilizers. Comprising monoammonium phosphate; urea; potassium nitrate; cake fertilizer leach liquor; trace elements; a wetting agent; a stabilizer; a biological agent; an adsorbent; deionized water; the preparation method of the adsorbent comprises the following steps: A1, taking loofah sponge powder, and removing lignin and hemicellulose to obtain loofah sponge cellulose powder; a2, mixing the loofah sponge cellulose powder, deionized water, a chitosan solution and plant ash, mechanically pulping uniformly, performing vacuum freeze-drying treatment to form holes, crushing and grinding to obtain the adsorbent, root development can be promoted, elongation and thickening of stems are promoted, the photosynthetic rate of plants is increased, and the crop yield is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizers, and in particular to an elemental liquid fertilizer for promoting nutrient absorption and a preparation method thereof. Background Art

[0002] Organic fertilizer is a kind of environmentally friendly fertilizer that uses natural materials such as animal and plant waste and plant residues as its main raw materials. Through physical, chemical, biological or a combination of these three treatment technologies, and after a series of sophisticated processing techniques, toxic and harmful substances are effectively removed. The final product is rich in organic acids, peptides, nitrogen, phosphorus, potassium and other nutrients necessary for plant growth. However, solid organic fertilizers widely used in the market currently have some common problems in the actual application process, such as difficulty in particle disintegration, uneven dispersion in the soil, serious waste of powdered fertilizer during fertilization, slow decomposition and conversion rate, etc. These factors seriously restrict the efficient use of organic fertilizers. Suspension fertilizer is a new type of liquid fertilizer, which is characterized by uniform suspension of nutrients in liquid. After the organic fertilizer is made into suspension fertilizer, it is difficult to maintain a uniform fluid state for a long time during storage and use, and problems such as stratification and caking are prone to occur. Nutrient loss is aggravated after topdressing, and fertilizer utilization rate is reduced. Summary of the Invention

[0003] The purpose of the present invention is to provide an elemental liquid fertilizer that promotes nutrient absorption and a preparation method thereof, so as to solve the problem in the prior art that it is difficult to maintain a uniform fluid state after organic fertilizer is made into a suspension fertilizer, thereby reducing fertilizer utilization.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] An elemental liquid fertilizer for promoting nutrient absorption, comprising the following components in parts by mass:

[0006]

[0007]

[0008] The preparation method of the adsorbent comprises the following steps:

[0009] A1. Remove lignin and hemicellulose from loofah powder to obtain loofah cellulose powder;

[0010] A2. The loofah cellulose powder, deionized water, chitosan solution and wood ash are mixed, mechanically pulped and uniformly prepared, subjected to vacuum freeze-drying treatment to form pores, crushed and ground to obtain the adsorbent.

[0011] As a further embodiment of the present invention, the method for preparing the cake fertilizer extract comprises the following steps:

[0012] The decomposed sesame cake fertilizer is crushed and soaked in distilled water for 20-30 hours, filtered, and the liquid phase is collected to obtain the cake fertilizer extract.

[0013] As a further embodiment of the present invention, the microorganisms in the biological agent include rhizobia and yeast.

[0014] As a further embodiment of the present invention, the mass ratio of the rhizobia to the yeast is 1-2:2-3.

[0015] As a further embodiment of the present invention, the wetting agent includes at least one of oleic acid, polyethylene glycol, and sodium lauryl sulfate.

[0016] As a further embodiment of the present invention, the stabilizer is selected from at least one of citric acid, sodium alginate, hydroxyethyl cellulose, sodium carboxymethyl cellulose, and sodium hexametaphosphate.

[0017] As a further embodiment of the present invention, the trace elements are selected from a plurality of elements selected from manganese sulfate, boric acid, zinc sulfate, copper sulfate, molybdic acid, nickel sulfate, and ferrous sulfate.

[0018] The method for preparing the elemental liquid fertilizer that promotes nutrient absorption comprises the following steps:

[0019] S1. Mix the trace elements, wetting agent, stabilizer, adsorbent, biological agent and deionized water according to the formula and stir evenly;

[0020] S2. Add monoammonium phosphate, urea, potassium nitrate, and cake fertilizer extract to the mixed materials in S1 according to the formula amount, and stir evenly to obtain the elemental liquid fertilizer that promotes nutrient absorption.

[0021] Beneficial effects of the present invention:

[0022] The present invention discloses an elemental liquid fertilizer for promoting nutrient absorption and a preparation method thereof. Luffa powder is used to prepare an amphiphilic adsorbent for adsorbing trace elements, which is uniformly dispersed in a fluid to form a uniform fluid form, thereby improving the utilization rate of nutrients in the fertilizer. By adding a biological agent, the degradation of the luffa can be accelerated, and nutrients can be quickly released to act on the root system of plants, thereby promoting plant growth and development. By adding cake fertilizer extract, organic fertilizer, and trace elements for synergistic effect, root development can be promoted, stem elongation and thickening can be promoted, the photosynthetic rate of plants can be increased, and crop yield can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 These are comparative pictures of eggplant roots obtained by applying the liquid fertilizer of Example 2 (top) of the present invention and Comparative Example 1 (bottom). DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] A method for preparing an elemental liquid fertilizer that promotes nutrient absorption comprises the following steps:

[0028] S1. Mix 2.35 parts by mass of trace elements, 0.1 parts by mass of wetting agent, 0.1 parts by mass of stabilizer, 2 parts by mass of adsorbent, 0.2 parts by mass of biological agent and 80 parts by mass of deionized water and stir evenly;

[0029] The trace elements include manganese sulfate, boric acid, zinc sulfate, copper sulfate, molybdic acid, nickel sulfate, and ferrous sulfate, which are uniformly mixed in a mass ratio of 0.4:1:1:1:0.2:0.1:0.5;

[0030] The wetting agent is obtained by mixing oleic acid, polyethylene glycol, and sodium lauryl sulfate in a mass ratio of 1:1:1;

[0031] The stabilizer is carboxymethyl cellulose sodium salt;

[0032] S2. Add 19 parts by mass of monoammonium phosphate, 15 parts by mass of urea, 12 parts by mass of potassium nitrate, and 10 parts by mass of cake fertilizer extract to the mixed materials in S1, and stir evenly to obtain the elemental liquid fertilizer that promotes nutrient absorption.

[0033] The preparation method of the adsorbent comprises the following steps:

[0034] A1. Mix loofah powder and deionized water, add hydrogen peroxide solution, adjust the pH to 4 with citric acid, heat in a water bath at 70°C with stirring for 3 hours, filter with suction, take the solid phase and add it to sodium hydroxide solution, heat in a water bath at 85°C with stirring for 3 hours, filter with suction, wash the solid phase, and dry to obtain loofah cellulose powder from which lignin and hemicellulose have been removed; the ratio of the loofah powder, deionized water, hydrogen peroxide solution, and sodium hydroxide solution is 5 g:100 mL:30 mL:20 mL; the mass fraction of the hydrogen peroxide solution is 10%; the mass fraction of the sodium hydroxide solution is 15%;

[0035] A2. The loofah cellulose powder, deionized water, chitosan solution and wood ash were mixed, mechanically pulped and uniformly mixed, frozen in a mold, and vacuum freeze-dried at -40°C for 48 hours. The mixture was crushed and ground to obtain an adsorbent with a particle size of 50 mesh; the ratio of the loofah cellulose powder, deionized water, chitosan solution and wood ash was 3g:30mL:7mL:7g; and the concentration of the chitosan solution was 2mg / mL.

[0036] The preparation method of the biological agent comprises the following steps:

[0037] The rhizobium solution and yeast solution obtained by screening, separation, purification, culture and inoculation fermentation are uniformly mixed in a mass ratio of 1:2, and dried at 28°C to make the moisture content below 15%, thereby obtaining a biological bacterial agent.

[0038] The preparation method of the cake fertilizer extract comprises the following steps:

[0039] 10 parts by mass of decomposed sesame cake fertilizer are crushed and soaked in 100 parts by mass of distilled water for 20 hours, filtered, and the liquid phase is collected to obtain the cake fertilizer extract.

[0040] Example 2

[0041] A method for preparing an elemental liquid fertilizer that promotes nutrient absorption comprises the following steps:

[0042] S1. Mix 2.55 parts by mass of trace elements, 0.15 parts by mass of wetting agent, 0.2 parts by mass of stabilizer, 3 parts by mass of adsorbent, 0.25 parts by mass of biological agent and 90 parts by mass of deionized water and stir until uniform;

[0043] The trace elements include manganese sulfate, boric acid, zinc sulfate, copper sulfate, molybdic acid, nickel sulfate, and ferrous sulfate, which are uniformly mixed in a mass ratio of 0.4:1:1:1:0.2:0.1:0.5;

[0044] The wetting agent is obtained by mixing oleic acid, polyethylene glycol, and sodium lauryl sulfate in a mass ratio of 1:1:1;

[0045] The stabilizer is carboxymethyl cellulose sodium salt;

[0046] S2. Add 20 parts by mass of monoammonium phosphate, 20 parts by mass of urea, 15 parts by mass of potassium nitrate, and 13 parts by mass of cake fertilizer extract to the mixed materials in S1, and stir evenly to obtain the elemental liquid fertilizer that promotes nutrient absorption.

[0047] The preparation method of the adsorbent comprises the following steps:

[0048] A1. Mix loofah powder and deionized water, add hydrogen peroxide solution, adjust the pH to 4.5 with citric acid, heat in a water bath at 70°C with stirring for 3.5 hours, filter with suction, take the solid phase and add it to sodium hydroxide solution, heat in a water bath at 85°C with stirring for 3.5 hours, filter with suction, wash the solid phase, and dry it to obtain loofah cellulose powder from which lignin and hemicellulose have been removed; the ratio of the loofah powder, deionized water, hydrogen peroxide solution, and sodium hydroxide solution is 6.5 g:100 mL:35 mL:25 mL; the mass fraction of the hydrogen peroxide solution is 10%; the mass fraction of the sodium hydroxide solution is 15%;

[0049] A2. The loofah cellulose powder, deionized water, chitosan solution and wood ash were mixed, mechanically pulped and uniformly mixed, frozen in a mold, and vacuum freeze-dried at -40°C for 48 hours. The mixture was crushed and ground to obtain an adsorbent with a particle size of 65 mesh; the ratio of the loofah cellulose powder, deionized water, chitosan solution and wood ash was 3.5g:35mL:8mL:8g; and the concentration of the chitosan solution was 2mg / mL.

[0050] The preparation method of the biological agent comprises the following steps:

[0051] The rhizobium solution and yeast solution obtained by screening, separation, purification, culture and inoculation fermentation are uniformly mixed in a mass ratio of 1.5:2.5, and dried at 28°C to make the moisture content below 15% to obtain a biological bacterial agent.

[0052] The preparation method of the cake fertilizer extract comprises the following steps:

[0053] 15 parts by mass of decomposed sesame cake fertilizer are crushed and soaked in 100 parts by mass of distilled water for 25 hours, filtered, and the liquid phase is collected to obtain the cake fertilizer extract.

[0054] Example 3

[0055] A method for preparing an elemental liquid fertilizer that promotes nutrient absorption comprises the following steps:

[0056] S1. Mix 2.75 parts by mass of trace elements, 0.2 parts by mass of wetting agent, 0.3 parts by mass of stabilizer, 4 parts by mass of adsorbent, 0.3 parts by mass of biological agent and 100 parts by mass of deionized water and stir until uniform;

[0057] The trace elements include manganese sulfate, boric acid, zinc sulfate, copper sulfate, molybdic acid, nickel sulfate, and ferrous sulfate, which are uniformly mixed in a mass ratio of 0.4:1:1:1:0.2:0.1:0.5;

[0058] The wetting agent is obtained by mixing oleic acid, polyethylene glycol, and sodium lauryl sulfate in a mass ratio of 1:1:1;

[0059] The stabilizer is carboxymethyl cellulose sodium salt;

[0060] S2. Add 21 parts by mass of monoammonium phosphate, 25 parts by mass of urea, 17 parts by mass of potassium nitrate, and 16 parts by mass of cake fertilizer extract to the mixed materials in S1, and stir evenly to obtain the elemental liquid fertilizer that promotes nutrient absorption.

[0061] The preparation method of the adsorbent comprises the following steps:

[0062] A1. Mix loofah powder and deionized water, add hydrogen peroxide solution, adjust the pH to 5 with citric acid, heat in a water bath at 70°C with stirring for 4 hours, filter with suction, take the solid phase and add it to sodium hydroxide solution, heat in a water bath at 85°C with stirring for 4 hours, filter with suction, wash the solid phase, and dry it to obtain loofah cellulose powder from which lignin and hemicellulose have been removed; the ratio of the loofah powder, deionized water, hydrogen peroxide solution, and sodium hydroxide solution is 8 g:100 mL:40 mL:30 mL; the mass fraction of the hydrogen peroxide solution is 10%; the mass fraction of the sodium hydroxide solution is 15%;

[0063] A2. The loofah cellulose powder, deionized water, chitosan solution and wood ash were mixed, mechanically pulped and uniformly mixed, frozen in a mold, and vacuum freeze-dried at -40°C for 48 hours. The mixture was crushed and ground to obtain an adsorbent with a particle size of 80 mesh; the ratio of the loofah cellulose powder, deionized water, chitosan solution and wood ash was 4g:40mL:9mL:9g; and the concentration of the chitosan solution was 2mg / mL.

[0064] The preparation method of the biological agent comprises the following steps:

[0065] The rhizobium solution and yeast solution obtained by screening, separation, purification, culture and inoculation fermentation are uniformly mixed in a mass ratio of 2:3, and dried at 28°C to make the moisture content below 15%, thereby obtaining a biological bacterial agent.

[0066] The preparation method of the cake fertilizer extract comprises the following steps:

[0067] 20 parts by mass of decomposed sesame cake fertilizer are crushed and soaked in 100 parts by mass of distilled water for 30 hours, filtered, and the liquid phase is collected to obtain the cake fertilizer extract.

[0068] Comparative Example 1

[0069] The difference from Example 2 is that the preparation method of the adsorbent includes the following steps:

[0070] Luffa powder and deionized water are mixed, hydrogen peroxide solution is added, the pH value is adjusted to 5 with citric acid, the mixture is heated in a water bath at 70°C with stirring for 4 hours, filtered with suction, the solid phase is added to a sodium hydroxide solution, the mixture is heated in a water bath at 85°C with stirring for 4 hours, filtered with suction, the solid phase is washed, and dried to obtain luffa cellulose powder from which lignin and hemicellulose have been removed as an adsorbent; the dosage ratio of the luffa powder, deionized water, hydrogen peroxide solution, and sodium hydroxide solution is 8 g:100 mL:40 mL:30 mL; the mass fraction of the hydrogen peroxide solution is 10%; and the mass fraction of the sodium hydroxide solution is 15%.

[0071] Comparative Example 2

[0072] The difference from Example 2 is that no stabilizer is added.

[0073] Comparative Example 3

[0074] The difference from Example 2 is that no biological agent is added.

[0075] Comparative Example 4

[0076] The difference from Example 2 is that cake fertilizer extract is not added.

[0077] Performance Testing

[0078] Experimental Design:

[0079] Test plan: Randomly select the test site, dig out 35 raised ridges, each ridge is 0.4m apart, and 50 long eggplant 550 green-calyx purple long eggplant seeds are evenly planted in each ridge. Every 5 ridges form a group, and the subjects are randomly divided into 7 groups. Each group is respectively applied with the fertilizers prepared in Examples 1 to 3 and Comparative Examples 1 to 4.

[0080] Experimental treatment: starting from the seedling stage, the fertilizers prepared in Examples 1 to 3 and Comparative Examples 1 to 4 were sprayed once every 7 days for a total of 5 times, with each group using 5 kg of fertilizer each time.

[0081] The test results are shown in Table 1 below.

[0082] Table 1

[0083]

[0084]

[0085] like Figure 1 As shown, the root pictures of the eggplant plants obtained by applying the liquid fertilizer of Example 2 (upper) and Comparative Example 1 (lower) show that the roots of the eggplant plants obtained by applying the liquid fertilizer of Example 2 are thicker and more developed.

[0086] As can be seen from Table 1, after spraying the liquid fertilizers prepared in Examples 1 to 3, the fluid morphology is uniform and good, and most of the nutrients can evenly infiltrate into the soil, which has a good growth-promoting effect on the growth and development of eggplant seedlings; in Comparative Example 1, the loofah cellulose powder was not surface treated, resulting in a decrease in the growth-promoting effect; in Comparative Example 2, no stabilizer was added, resulting in a decrease in the growth-promoting effect; in Comparative Example 3, no biological agent was added, resulting in a decrease in the growth-promoting effect; in Comparative Example 4, no cake fertilizer extract was added, resulting in a decrease in the growth-promoting effect.

[0087] The above describes some embodiments of the present invention in detail, but the contents described are only preferred embodiments of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An elemental liquid fertilizer for promoting nutrient absorption, characterized in that: The composition includes the following components in parts by mass: The preparation method of the adsorbent comprises the following steps: A1. Remove lignin and hemicellulose from loofah powder to obtain loofah cellulose powder; A2. The loofah cellulose powder, deionized water, chitosan solution and wood ash are mixed, mechanically pulped and uniformly prepared, subjected to vacuum freeze-drying treatment to form pores, crushed and ground to obtain the adsorbent.

2. The elemental liquid fertilizer for promoting nutrient absorption according to claim 1, characterized in that: The preparation method of the cake fertilizer extract comprises the following steps: The decomposed sesame cake fertilizer is crushed and soaked in distilled water for 20-30 hours, filtered, and the liquid phase is collected to obtain the cake fertilizer extract.

3. The elemental liquid fertilizer for promoting nutrient absorption according to claim 1, characterized in that: The microorganisms in the biological agent include rhizobia and yeast.

4. The elemental liquid fertilizer for promoting nutrient absorption according to claim 3, characterized in that: The mass ratio of the rhizobium to the yeast is 1-2:2-3.

5. The elemental liquid fertilizer for promoting nutrient absorption according to claim 1, characterized in that: The wetting agent includes at least one of oleic acid, polyethylene glycol, and sodium lauryl sulfate.

6. The elemental liquid fertilizer for promoting nutrient absorption according to claim 1, characterized in that: The stabilizer is selected from at least one of citric acid, sodium alginate, hydroxyethyl cellulose, carboxymethyl cellulose sodium salt, and sodium hexametaphosphate.

7. The elemental liquid fertilizer for promoting nutrient absorption according to claim 1, characterized in that: The trace elements are selected from a variety of manganese sulfate, boric acid, zinc sulfate, copper sulfate, molybdic acid, nickel sulfate, and ferrous sulfate.

8. The method for preparing the elemental liquid fertilizer for promoting nutrient absorption according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Mix the trace elements, wetting agent, stabilizer, adsorbent, biological agent and deionized water according to the formula and stir evenly; S2. Add monoammonium phosphate, urea, potassium nitrate, and cake fertilizer extract to the mixed materials in S1 according to the formula amount, and stir evenly to obtain the elemental liquid fertilizer that promotes nutrient absorption.

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