Carbon-based organic-inorganic compound fertilizer as well as preparation method and application thereof

Abstract

The invention provides a carbon-based organic-inorganic compound fertilizer and a preparation method and application thereof.The carbon-based organic-inorganic compound fertilizer is prepared from, by weight, 10-15 parts of biomass charcoal, 20-25 parts of livestock manure, 3-5 parts of compound extract, 1-2 parts of compound polysaccharide, 10-15 parts of urea, 10-15 parts of ammonium sulfate, 10-15 parts of monoammonium phosphate and 10-15 parts of potassium sulfate; wherein the biomass charcoal is prepared from magnetic embedded charcoal and immobilized bacterium porous charcoal in a mass ratio of (2-4): 1. The carbon-based organic-inorganic compound fertilizer disclosed by the invention is scientific and reasonable in formula, forms a carbon-bacterium-pesticide-fertilizer integrated coupling system, and can provide multi-element efficient fertility guarantee and a healthy soil environment for plant growth, so that the growth and development of plants are remarkably promoted, the photosynthesis efficiency is improved, and the purposes of improving the quality and increasing the yield are achieved. In addition, soil structure can be obviously improved, soil porosity can be increased, hardening can be broken, permeability can be increased, and soil can be activated.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizer preparation, and in particular to a carbon-based organic-inorganic compound fertilizer and a preparation method and application thereof. Background Art

[0002] Fertilizer is an indispensable substance in agricultural production. Excessive use of inorganic fertilizers will aggravate the speed of soil desertification and salinization. Excessive use of inorganic fertilizers will cause crops to have various harmful substances that are not conducive to human health, which seriously affects the quality of crops. Therefore, people have begun to pay more and more attention to the production and use of organic fertilizers. Organic fertilizers can not only provide comprehensive nutrition for crops, but also have long fertilizer effects, increase and renew soil organic matter, promote microbial reproduction, improve soil physical and chemical properties and biological activity, and are the main nutrients for green food production. However, the composition of existing organic fertilizers is relatively simple, organic matter decomposes slowly, the fertilizer supply capacity is weak, the crop resistance is poor, the fertilizer utilization rate is low, and the crop yield effect is not good.

[0003] Therefore, in order to obtain high yield and improve fertilizer efficiency, organic fertilizer and chemical fertilizer should be used together, and organic-inorganic compound fertilizer has the advantages of both inorganic fertilizer and organic fertilizer. However, the existing organic-inorganic compound fertilizer has unreasonable raw material matching, unbalanced nutrition, low fertilizer utilization rate, and unsatisfactory application effect, poor crop yield, low quality, and multiple applications are likely to cause environmental pollution and waste resources.

[0004] Therefore, it is necessary to provide a functional and efficient organic-inorganic compound that can not only meet the multi-nutrient needs of crop growth, improve quality and increase yield, improve soil and activate land, but also provide fertilizer and medicine to improve crop resistance. Summary of the invention

[0005] In view of this, the present invention proposes a carbon-based organic-inorganic compound fertilizer and a preparation method and application thereof to solve the above technical problems.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A carbon-based organic-inorganic compound fertilizer comprises the following raw materials, measured by weight: 10-15 parts of biochar, 20-25 parts of poultry and livestock manure, 3-5 parts of compound extracts, 1-2 parts of complex polysaccharides, 10-15 parts of urea, 10-15 parts of ammonium sulfate, 10-15 parts of monoammonium phosphate, and 10-15 parts of potassium sulfate.

[0008] Furthermore, the biomass charcoal is magnetically embedded biochar and fixed bacteria porous biochar in a mass ratio of 2-4:1.

[0009] Furthermore, the preparation method of the magnetic embedded biochar includes:

[0010] (1) adding a biomass carbon source to a ferrous chloride solution, ultrasonically treating it, dropping ammonia water to react, filtering, washing and drying, grinding, calcining, and cooling it with the furnace to obtain magnetic biochar;

[0011] (2) adding ferrous sulfate, magnesium sulfate and zinc sulfate to the chitosan solution and mixing evenly, adding the magnetic biochar of step (1), stirring at a low speed, filtering and drying, and obtaining magnetic embedded biochar;

[0012] In step (1), the biomass carbon source is at least one of fruit shell, fruit wood and straw; the concentration of the ferrous chloride solution is 10-15wt%; the solid-liquid ratio of the biomass carbon source to the ferrous chloride solution is 1:10-20g / mL; the ultrasonic treatment is carried out at 20-30kHz and 30-40°C for 30-60min; the concentration of the ammonia water is 25-30wt%; the volume ratio of the ammonia water to the ferrous chloride solution is 0.08-0.12:1; the reaction time is 2-4h and the temperature is 40-50°C; the calcination is first heated to 400-600°C at a heating rate of 3-5°C / min and kept warm for 1-2h, and then heated to 700-800°C at a heating rate of 1-2°C / min and kept warm for 2-4h;

[0013] In step (2), the solid-liquid ratio of the total mass of ferrous sulfate, magnesium sulfate and zinc sulfate to the chitosan solution is 1:40-50 g / mL; the mass ratio of ferrous sulfate, magnesium sulfate and zinc sulfate is 1-2:1:0.8-1.2; the concentration of the chitosan solution is 8-10wt%; the solid-liquid ratio of the magnetic biochar to the chitosan solution is 1:8-10 g / mL; and the low-speed stirring is stirring at 50-80 rpm and 20-25°C for 2-4 hours.

[0014] Furthermore, the preparation method of the fixed bacteria porous biochar includes:

[0015] (1) adding a biomass carbon source to a calcium chloride solution, performing a hydrothermal reaction, filtering and drying, calcining, and cooling with the furnace to obtain a material;

[0016] (2) treating the material with low-temperature plasma to obtain porous biochar;

[0017] (3) mixing the Bacillus subtilis seed solution and the Bacillus licheniformis seed solution evenly, adding the solution to the porous biochar prepared in step (2), mixing evenly, and evaporating the solvent to obtain a porous biochar with fixed bacteria;

[0018] In step (1), the biomass carbon source is at least one of fruit shell, fruit wood and straw; the concentration of the calcium chloride solution is 15-20wt%; the solid-liquid ratio of the biomass carbon source to the calcium chloride solution is 1:40-60g / mL; the hydrothermal reaction is carried out at 160-180°C and pH=4-5 for 10-12h; the calcination is carried out at a heating rate of 3-5°C / min to 500-700°C and kept warm for 1-2h;

[0019] In step (2), the low temperature plasma treatment is carried out at 220-250W and 0.6-0.8mbar oxygen atmosphere for 6-8min;

[0020] In step (3), the Bacillus subtilis seed solution and the Bacillus licheniformis seed solution are obtained by inoculating Bacillus subtilis and Bacillus licheniformis into slant culture medium respectively, and fermenting and culturing at 100-150rpm and 23-27°C for 12-24h, and the effective colony count is 108-109CFU / mL; the mass ratio of the Bacillus subtilis seed solution to the Bacillus licheniformis seed solution and the porous biochar is 5-7:3-5:10.

[0021] Furthermore, the compound extract is tobacco stem extract, wormwood leaf extract and rosemary extract in a mass ratio of 1-3:5-7:1.

[0022] Furthermore, the complex polysaccharide is pollen polysaccharide, lentinan and fucose in a mass ratio of 1:3-5:2-4.

[0023] A method for preparing a carbon-based organic-inorganic compound fertilizer, the specific preparation steps comprising:

[0024] S1, composting and fermenting livestock excrement to obtain fermented material;

[0025] S2. The fermentation material, the compound extract, the compound polysaccharide, the biochar, the urea, the ammonium sulfate, the monoammonium phosphate and the potassium sulfate are mixed and stirred evenly, extruded into granules, and dried to obtain the target carbon-based organic-inorganic compound fertilizer.

[0026] Furthermore, in step S1, the fermentation time is 35-40 days, and the compost is turned every 5 days; and the water content of the fermented material is controlled within 30%.

[0027] Furthermore, in step S2, the mixing and stirring is carried out at a speed of 200-300 rpm and for a time of 4-6 hours.

[0028] Application of a carbon-based organic-inorganic compound fertilizer in (1)-(4);

[0029] (1) Increase the height and thickness of the plant stem;

[0030] (2) Increase the chlorophyll content of plants;

[0031] (3) Increase plant yield;

[0032] (4) Improve the plant's resistance to disease and pests.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The carbon-based organic-inorganic compound fertilizer of the present invention has a scientific and reasonable formula, forming an integrated coupling system of carbon-bacteria-drug-fertilizer, providing multiple and efficient fertility guarantees and a healthy soil environment for plant growth, thereby significantly promoting plant growth and development, improving photosynthesis efficiency, and achieving the purpose of improving quality and increasing yield.

[0035] 2. The biochar of the present invention is composed of magnetic embedded biochar and fixed bacteria porous biochar, which can not only enrich the carbon nutrition in the soil, improve the soil structure, increase the soil porosity, and improve the soil's water and fertilizer retention capacity, but also neutralize the soil acidity and adsorb and fix heavy metals to cultivate a healthy soil environment.

[0036] 3. The magnetic embedded biochar of the present invention is rich in chitosan chelated magnesium, iron and zinc. On the one hand, it can supplement the trace elements required for plant growth, balance nutritional needs and promote crop growth; on the other hand, it can organically chelate the nutrients to improve the utilization rate of fertilizers, reduce fat and increase efficiency; on the third hand, it can utilize the magnetic force and porous dual adsorption of magnetic biochar to reduce nutrient loss and slow release for a long time.

[0037] 4. The fixed bacteria porous biochar of the present invention adsorbs Bacillus subtilis and Bacillus licheniformis. First, the carbon-based adsorption can effectively ensure the biological activity of the bacteria and prolong the fertilizer effect; second, it can further enrich the biodiversity of rhizosphere soil, fix nitrogen, phosphorus and potassium, activate the soil, and improve soil fertility; third, the beneficial strains can effectively enhance the plant's resistance to stress and disease and pests, providing a guarantee for improving quality and high yields.

[0038] 5. The compound extract of the present invention is rich in nicotine, essential oils and flavonoids. First, the source is safe, environmentally friendly and pollution-free. Second, it can effectively prevent and control underground pests and diseases and improve crop resistance. Third, it comes from agriculture, feeds back to agriculture, and helps circular agricultural production. The complex polysaccharide of the present invention is composed of pollen polysaccharides, shiitake polysaccharides and fucoidan, which can induce the early and rapid growth of adventitious roots and lateral roots, promote the elongation of main roots, increase the number of fibrous roots, and form a huge root system. DETAILED DESCRIPTION

[0039] In order to better understand the technical content of the present invention, specific embodiments are provided below to further illustrate the present invention.

[0040] Unless otherwise specified, the experimental methods used in the embodiments of the present invention are all conventional methods.

[0041] Unless otherwise specified, the materials, reagents, etc. used in the embodiments of the present invention can be obtained from commercial sources.

[0042] The biomass carbon source of the present invention is at least one of fruit shells, fruit wood and straw.

[0043] The pollen polysaccharide of the present invention is rapeseed pollen polysaccharide.

[0044] The Bacillus subtilis and Bacillus licheniformis seed solutions of the present invention are obtained by inoculating Bacillus subtilis and Bacillus licheniformis into slant culture medium respectively, and fermenting and culturing at 150rpm and 25°C for 24h, wherein Bacillus subtilis and Bacillus licheniformis are purchased from Henan Xin Yangshao Biotechnology Co., Ltd.

[0045] Example 1

[0046] A carbon-based organic-inorganic compound fertilizer of the present embodiment includes the following raw materials, measured by weight: 13 parts of biochar (magnetic embedded biochar and fixed bacteria porous biochar in a mass ratio of 3:1), 23 parts of poultry and livestock manure, 4 parts of compound extracts (tobacco stem extract, wormwood extract and rosemary extract in a mass ratio of 2:6:1), 1.5 parts of complex polysaccharides (pollen polysaccharides, shiitake polysaccharides and fucose in a mass ratio of 1:4:3), 13 parts of urea, 13 parts of ammonium sulfate, 13 parts of monoammonium phosphate, and 13 parts of potassium sulfate.

[0047] The preparation method of magnetic embedded biochar includes:

[0048] (1) According to the material-liquid ratio of 1:15 g / mL, the biomass carbon source is added to a 13 wt% ferrous chloride solution, ultrasonically treated at 25 kHz and 35 ° C for 45 min, 28 wt% ammonia water is added dropwise, the volume ratio of ammonia water to ferrous chloride solution is 0.1:1, and the reaction is carried out at 45 ° C for 3 h, filtered, washed, dried, ground, heated to 500 ° C at a rate of 4 ° C / min and kept for 1.5 h, and then heated to 750 ° C at a rate of 1 ° C / min and kept for 3 h, and cooled with the furnace to obtain magnetic biochar;

[0049] (2) According to a solid-liquid ratio of 1:45 g / mL, ferrous sulfate, magnesium sulfate and zinc sulfate in a mass ratio of 0.5:1:1 were added to a 9 wt% chitosan solution and mixed evenly. According to a solid-liquid ratio of 1:9 g / mL, the magnetic biochar of step (1) was added to the chitosan solution, stirred at 70 rpm and 23 ° C for 3 h, filtered and dried to obtain magnetic embedded biochar.

[0050] The preparation method of the fixed bacteria porous biochar comprises:

[0051] (1) According to the material-liquid ratio of 1:50 g / mL, the biomass carbon source was added to 18 wt% calcium chloride solution, and the hydrothermal reaction was carried out at 170 ° C and pH = 4.5 for 11 hours, filtered and dried, and the temperature was increased to 600 ° C at a rate of 4 ° C / min and kept for 1.5 hours, and cooled with the furnace to obtain the material;

[0052] (2) treating the material with low-temperature plasma at 240 W and 0.7 mbar of oxygen atmosphere for 7 min to obtain porous biochar;

[0053] (3) Set the effective colony count to 10 8 CFU / mL of Bacillus subtilis seed liquid and Bacillus licheniformis seed liquid are mixed evenly, added to the porous biochar of step (2), the mass ratio of Bacillus subtilis seed liquid to Bacillus licheniformis seed liquid and porous biochar is 6:3:10, mixed evenly, and the solvent is evaporated to obtain fixed bacteria porous biochar.

[0054] The preparation method of the above carbon-based organic-inorganic compound fertilizer comprises the following specific preparation steps:

[0055] S1. Aerobically composting and fermenting livestock manure for a fermentation period of 35-40 days, turning the compost every 5 days, until the fermentation temperature drops to room temperature, and obtaining a fermented material with a moisture content controlled within 30%;

[0056] S2. Mix the fermentation material, compound extract, compound polysaccharide, biochar, urea, ammonium sulfate, monoammonium phosphate and potassium sulfate, stir at 250 rpm for 5 hours, extrude granulate, and dry to obtain the target carbon-based organic-inorganic compound fertilizer.

[0057] Example 2

[0058] A carbon-based organic-inorganic compound fertilizer of the present embodiment includes the following raw materials, measured by weight: 10 parts of biochar (magnetic embedded biochar and fixed bacteria porous biochar in a mass ratio of 2:1), 20 parts of poultry and livestock manure, 3 parts of compound extracts (tobacco stem extract, wormwood extract and rosemary extract in a mass ratio of 1:5:1), 1 part of complex polysaccharide (pollen polysaccharide, shiitake polysaccharide and fucose in a mass ratio of 1:3:2), 10 parts of urea, 10 parts of ammonium sulfate, 10 parts of monoammonium phosphate, and 10 parts of potassium sulfate.

[0059] The preparation method of magnetic embedded biochar includes:

[0060] (1) According to the material-liquid ratio of 1:10 g / mL, the biomass carbon source is added to a 10 wt% ferrous chloride solution, ultrasonically treated at 20 kHz and 30 ° C for 30 min, 25 wt% ammonia water is added dropwise, the volume ratio of ammonia water to ferrous chloride solution is 0.08:1, reacted at 40 ° C for 2 h, filtered, washed and dried, ground, heated to 400 ° C at a rate of 3 ° C / min and kept for 1 h, then heated to 700 ° C at a rate of 1 ° C / min and kept for 2 h, cooled with the furnace, and magnetic biochar is obtained;

[0061] (2) According to the solid-liquid ratio of 1:40 g / mL, ferrous sulfate, magnesium sulfate and zinc sulfate in a mass ratio of 1:1:0.8 were added to 8 wt% chitosan solution and mixed evenly. According to the solid-liquid ratio of 1:8 g / mL, the magnetic biochar of step (1) was added to the chitosan solution, stirred at 50 rpm and 20°C for 2 h, filtered and dried to obtain magnetic embedded biochar.

[0062] The preparation method of the fixed bacteria porous biochar comprises:

[0063] (1) According to the material-liquid ratio of 1:40 g / mL, the biomass carbon source was added to a 15 wt% calcium chloride solution, and the solution was hydrothermally reacted at 160°C and pH = 4 for 10 h, filtered and dried, and the temperature was increased to 500°C at a rate of 3°C / min and kept for 1 h, and then cooled with the furnace to obtain the material;

[0064] (2) treating the material with low-temperature plasma at 220 W and 0.6 mbar oxygen atmosphere for 6 min to obtain porous biochar;

[0065] (3) Set the effective colony count to 10 8 CFU / mL of Bacillus subtilis seed liquid and Bacillus licheniformis seed liquid are mixed evenly, added to the porous biochar of step (2), the mass ratio of Bacillus subtilis seed liquid to Bacillus licheniformis seed liquid and porous biochar is 5:3:10, mixed evenly, and the solvent is evaporated to obtain fixed bacteria porous biochar.

[0066] The preparation method of the above carbon-based organic-inorganic compound fertilizer comprises the following specific preparation steps:

[0067] S1. Aerobically composting and fermenting livestock manure for a fermentation period of 35-40 days, turning the compost every 5 days, until the fermentation temperature drops to room temperature, and obtaining a fermented material with a moisture content controlled within 30%;

[0068] S2. The fermentation material, the compound extract, the compound polysaccharide, the biochar, the urea, the ammonium sulfate, the monoammonium phosphate and the potassium sulfate are mixed, stirred at 200 rpm for 4 hours, extruded into granules, and dried to obtain the target carbon-based organic-inorganic compound fertilizer.

[0069] Example 3

[0070] A carbon-based organic-inorganic compound fertilizer of the present embodiment includes the following raw materials, measured by weight: 15 parts of biochar (magnetic embedded biochar and fixed bacteria porous biochar in a mass ratio of 4:1), 20 parts of poultry and livestock manure, 5 parts of compound extracts (tobacco stem extract, wormwood extract and rosemary extract in a mass ratio of 3:7:1), 2 parts of complex polysaccharides (pollen polysaccharide, shiitake polysaccharide and fucose in a mass ratio of 1:5:4), 15 parts of urea, 15 parts of ammonium sulfate, 15 parts of monoammonium phosphate, and 15 parts of potassium sulfate.

[0071] The preparation method of magnetic embedded biochar includes:

[0072] (1) According to the material-liquid ratio of 1:20 g / mL, the biomass carbon source is added to a 15 wt% ferrous chloride solution, ultrasonically treated at 30 kHz and 40 ° C for 60 min, 30 wt% ammonia water is added dropwise, the volume ratio of ammonia water to ferrous chloride solution is 0.12:1, reacted at 50 ° C for 4 h, filtered, washed and dried, ground, heated to 600 ° C at a rate of 5 ° C / min and kept for 2 h, then heated to 800 ° C at a rate of 2 ° C / min and kept for 4 h, cooled with the furnace, and magnetic biochar is obtained;

[0073] (2) According to a solid-liquid ratio of 1:50 g / mL, ferrous sulfate, magnesium sulfate and zinc sulfate in a mass ratio of 2:1:1.2 were added to a 10 wt% chitosan solution and mixed evenly. According to a solid-liquid ratio of 1:10 g / mL, the magnetic biochar of step (1) was added to the chitosan solution, stirred at 80 rpm and 25°C for 4 h, filtered and dried to obtain magnetic embedded biochar.

[0074] The preparation method of the fixed bacteria porous biochar comprises:

[0075] (1) According to the material-liquid ratio of 1:60 g / mL, the biomass carbon source was added to a 20 wt% calcium chloride solution, and the solution was hydrothermally reacted at 180°C and pH = 5 for 12 h, filtered and dried, and the temperature was increased to 700°C at a rate of 5°C / min and kept for 2 h, and then cooled with the furnace to obtain the material;

[0076] (2) treating the material with low-temperature plasma at 250 W and 0.8 mbar of oxygen atmosphere for 8 min to obtain porous biochar;

[0077] (3) Set the effective colony count to 10 9 CFU / mL of Bacillus subtilis seed liquid and Bacillus licheniformis seed liquid are mixed evenly, added to the porous biochar of step (2), the mass ratio of Bacillus subtilis seed liquid to Bacillus licheniformis seed liquid and porous biochar is 7:5:10, mixed evenly, and the solvent is evaporated to obtain fixed bacteria porous biochar.

[0078] The preparation method of the above carbon-based organic-inorganic compound fertilizer comprises the following specific preparation steps:

[0079] S1. Aerobically composting and fermenting livestock manure for a fermentation period of 35-40 days, turning the compost every 5 days, until the fermentation temperature drops to room temperature, and obtaining a fermented material with a moisture content controlled within 30%;

[0080] S2. The fermentation material, the compound extract, the compound polysaccharide, the biochar, the urea, the ammonium sulfate, the monoammonium phosphate and the potassium sulfate are mixed, stirred at 300 rpm for 6 hours, extruded into granules, and dried to obtain the target carbon-based organic-inorganic compound fertilizer.

[0081] Comparative Example 1

[0082] The difference from Example 1 is that the biochar is obtained by directly calcining the biochar source in a pyrolysis furnace, and the rest is the same as Example 1.

[0083] The preparation method of the biomass charcoal in this comparative example comprises: placing a biomass charcoal source in a pyrolysis furnace, adjusting the temperature to 750° C. for 3 hours, cooling, grinding, and obtaining the biomass charcoal.

[0084] Comparative Example 2

[0085] The difference from Example 1 is that all the biochars are magnetically embedded biochars, and the rest are the same as Example 1.

[0086] That is, a carbon-based organic-inorganic compound fertilizer of this comparative example includes the following raw materials in parts by weight: 13 parts of magnetically embedded biochar, 23 parts of poultry and livestock manure, 4 parts of compound extracts (tobacco stem extract, wormwood extract and rosemary extract in a mass ratio of 2:6:1), 1.5 parts of complex polysaccharides (pollen polysaccharides, shiitake polysaccharides and fucose in a mass ratio of 1:4:3), 13 parts of urea, 13 parts of ammonium sulfate, 13 parts of monoammonium phosphate, and 13 parts of potassium sulfate.

[0087] Comparative Example 3

[0088] The difference from Example 1 is that all the biochars are porous biochars with fixed bacteria, and the rest is the same as Example 1.

[0089] That is, a carbon-based organic-inorganic compound fertilizer of this comparative example includes the following raw materials in parts by weight: 13 parts of fixed bacteria porous biochar, 23 parts of poultry and livestock manure, 4 parts of compound extracts (tobacco stem extract, wormwood extract and rosemary extract in a mass ratio of 2:6:1), 1.5 parts of complex polysaccharides (pollen polysaccharides, shiitake polysaccharides and fucose in a mass ratio of 1:4:3), 13 parts of urea, 13 parts of ammonium sulfate, 13 parts of monoammonium phosphate, and 13 parts of potassium sulfate.

[0090] Comparative Example 4

[0091] The difference from Example 1 is that the compound extract lacks tobacco stem extract, and the rest is consistent with Example 1.

[0092] That is, a carbon-based organic-inorganic compound fertilizer in this comparative example includes the following raw materials in parts by weight: 13 parts of biochar (magnetic embedded biochar and fixed bacteria porous biochar in a mass ratio of 3:1), 23 parts of poultry and livestock manure, 4 parts of compound extracts (artemisia annua extract and rosemary extract in a mass ratio of 1:3), 1.5 parts of complex polysaccharides (pollen polysaccharides, shiitake polysaccharides and fucose in a mass ratio of 1:4:3), 13 parts of urea, 13 parts of ammonium sulfate, 13 parts of monoammonium phosphate, and 13 parts of potassium sulfate.

[0093] Comparative Example 5

[0094] The difference from Example 1 is that the complex polysaccharide lacks pollen polysaccharide, and the rest is consistent with Example 1.

[0095] That is, a carbon-based organic-inorganic compound fertilizer in this comparative example includes the following raw materials in parts by weight: 13 parts of biochar (magnetic embedded biochar and fixed bacteria porous biochar in a mass ratio of 3:1), 23 parts of poultry and livestock manure, 4 parts of compound extracts (tobacco stem extract, wormwood extract and rosemary extract in a mass ratio of 2:6:1), 1.5 parts of complex polysaccharides (lentinan and fucose in a mass ratio of 4:3), 13 parts of urea, 13 parts of ammonium sulfate, 13 parts of monoammonium phosphate, and 13 parts of potassium sulfate.

[0096] Test example

[0097] Crop Type: Citrus (Newhall Navel Orange)

[0098] Test location: Huilongxu, Yongzhou City, Hunan Province

[0099] Experimental method: The citrus orchard was randomly divided into 9 areas, divided into a control group (1 area) and an experimental group (8 areas), 50 citrus plants (1-year seedlings) were planted in each area, the control group was applied with commercially available organic-inorganic compound fertilizers (purchased from Zhenxing Humic Acid Factory, Yaodu District, Linfen City), and the experimental group was applied with the organic-inorganic compound fertilizers of Examples 1-3 and Comparative Examples 1-5, with an application rate of 1 kg / plant, and topdressing of 2 kg / plant was applied after 3 months.

[0100] Two months after topdressing, measure the main branch height and stem diameter growth of citrus plants, and use a chlorophyll meter to measure the chlorophyll content, and count the ulcer disease and penicillium disease. The test period is 3 years, and the average value of the 3-year data is taken. After the third year of fruiting, pick the mature fruits and count the average yield per plant to calculate the yield increase rate. Yield increase rate = (yield of the test group - yield of the control group) / yield of the control group * 100%;

[0101] The results are shown in Table 1.

[0102] Table 1

[0103]

[0104] It can be seen from Table 1 that, compared with Comparative Examples 1-5, the carbon-based organic-inorganic compound fertilizers prepared in Examples 1-3 of the present invention can significantly promote plant growth and development, improve photosynthesis efficiency, increase yield, and improve crop stress resistance.

[0105] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A carbon-based organic-inorganic compound fertilizer, characterized in that: Calculated by weight, the raw materials include: 10-15 parts of biochar, 20-25 parts of poultry and livestock manure, 3-5 parts of compound extracts, 1-2 parts of complex polysaccharides, 10-15 parts of urea, 10-15 parts of ammonium sulfate, 10-15 parts of monoammonium phosphate, and 10-15 parts of potassium sulfate.

2. The carbon-based organic-inorganic compound fertilizer according to claim 1, characterized in that: The biomass charcoal is magnetically embedded biochar and fixed bacteria porous biochar in a mass ratio of 2-4:

1.

3. The carbon-based organic-inorganic compound fertilizer according to claim 2, characterized in that: The preparation method of the magnetic embedded biochar comprises: (1) adding a biomass carbon source to a ferrous chloride solution, ultrasonically treating it, dropping ammonia water to react, filtering, washing and drying, grinding, calcining, and cooling it with the furnace to obtain magnetic biochar; (2) adding ferrous sulfate, magnesium sulfate and zinc sulfate to the chitosan solution and mixing evenly, adding the magnetic biochar of step (1), stirring at a low speed, filtering and drying, and obtaining magnetic embedded biochar; In step (1), the biomass carbon source is at least one of fruit shell, fruit wood and straw; the concentration of the ferrous chloride solution is 10-15wt%; the solid-liquid ratio of the biomass carbon source to the ferrous chloride solution is 1:10-20g / mL; the ultrasonic treatment is carried out at 20-30kHz and 30-40°C for 30-60min; the concentration of the ammonia water is 25-30wt%; the volume ratio of the ammonia water to the ferrous chloride solution is 0.08-0.12:1; the reaction time is 2-4h and the temperature is 40-50°C; the calcination is first heated to 400-600°C at a heating rate of 3-5°C / min and kept warm for 1-2h, and then heated to 700-800°C at a heating rate of 1-2°C / min and kept warm for 2-4h; In step (2), the solid-liquid ratio of the total mass of ferrous sulfate, magnesium sulfate and zinc sulfate to the chitosan solution is 1:40-50 g / mL; the mass ratio of ferrous sulfate, magnesium sulfate and zinc sulfate is 1-2:1:0.8-1.2; the concentration of the chitosan solution is 8-10wt%; the solid-liquid ratio of the magnetic biochar to the chitosan solution is 1:8-10 g / mL; and the low-speed stirring is stirring at 50-80 rpm and 20-25°C for 2-4 hours.

4. The carbon-based organic-inorganic compound fertilizer according to claim 2, characterized in that: The preparation method of the fixed bacteria porous biochar comprises: (1) adding a biomass carbon source to a calcium chloride solution, performing a hydrothermal reaction, filtering and drying, calcining, and cooling with the furnace to obtain a material; (2) treating the material with low-temperature plasma to obtain porous biochar; (3) mixing the Bacillus subtilis seed solution and the Bacillus licheniformis seed solution evenly, adding the solution to the porous biochar prepared in step (2), mixing evenly, and evaporating the solvent to obtain a porous biochar with fixed bacteria; In step (1), the biomass carbon source is at least one of fruit shell, fruit wood and straw; the concentration of the calcium chloride solution is 15-20wt%; the solid-liquid ratio of the biomass carbon source to the calcium chloride solution is 1:40-60g / mL; the hydrothermal reaction is carried out at 160-180°C and pH=4-5 for 10-12h; the calcination is carried out at a heating rate of 3-5°C / min to 500-700°C and kept warm for 1-2h; In step (2), the low temperature plasma treatment is carried out at 220-250W and 0.6-0.8mbar oxygen atmosphere for 6-8min; In step (3), the Bacillus subtilis seed solution and the Bacillus licheniformis seed solution are obtained by inoculating Bacillus subtilis and Bacillus licheniformis into slant culture medium respectively, and fermenting and culturing at 100-150 rpm and 23-27° C. for 12-24 hours, and the effective colony count is 10 8 -10 9 CFU / mL; the mass ratio of the Bacillus subtilis seed liquid to the Bacillus licheniformis seed liquid and the porous biochar is 5-7:3-5:

10.

5. The carbon-based organic-inorganic compound fertilizer according to claim 1, characterized in that: The compound extract comprises tobacco stem extract, wormwood leaf extract and rosemary extract in a mass ratio of 1-3:5-7:

1.

6. The carbon-based organic-inorganic compound fertilizer according to claim 1, characterized in that: The complex polysaccharide is pollen polysaccharide, lentinan and fucose in a mass ratio of 1:3-5:2-4.

7. The method for preparing the carbon-based organic-inorganic compound fertilizer according to claim 1, characterized in that: The specific preparation steps include: S1, composting and fermenting livestock excrement to obtain fermented material; S2. The fermentation material, the compound extract, the compound polysaccharide, the biochar, the urea, the ammonium sulfate, the monoammonium phosphate and the potassium sulfate are mixed and stirred evenly, extruded into granules, and dried to obtain the target carbon-based organic-inorganic compound fertilizer.

8. The method for preparing the carbon-based organic-inorganic compound fertilizer according to claim 7, characterized in that: In step S1, the fermentation time is 35-40 days, and the compost is turned every 5 days; the water content of the fermented material is controlled within 30%.

9. The method for preparing the carbon-based organic-inorganic compound fertilizer according to claim 7, characterized in that: In step S2, the mixing and stirring is carried out at a rotation speed of 200-300 rpm for 4-6 hours.

10. Use of the carbon-based organic-inorganic compound fertilizer according to any one of claims 1 to 6 in (1) to (4); (1) Increase the height and thickness of the plant stem; (2) Increase the chlorophyll content of plants; (3) Increase plant yield; (4) Improve the plant's resistance to disease and pests.

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