Composition for carbon-nutrient-water synergistic fertilization and conditioning and preparation method thereof

Abstract

The invention provides a composition for fertilizing and conditioning through cooperation of carbon, water and water. The composition for fertilizing and conditioning comprises the following raw materials in parts by weight: 8-12 parts of an effective functional modifier, 5-9 parts of a water-retaining agent, 4-7 parts of a metakaolin-doped adjusted nanotube agent and 2-5 parts of trace elements. According to the composition for fertilizing and conditioning, the carbide is compounded with the fertilizer composition, the organic fertilizer and the inorganic fertilizer, so that the conditioning effect of the fertilizer on soil can be enhanced, the content of organic matters in the soil is increased, the fertility and the water retention improvement efficiency of the soil are harmoniously improved, meanwhile, the acting effect of the fertilizer on the soil is enhanced, and the growth quality of corn plants can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of fertilization and conditioning, and in particular to a composition for carbon-water coordinated fertilization and conditioning and a preparation method thereof. Background Art

[0002] Fertilizer conditioning refers to materials added to the soil that can improve the physical, chemical and biological activity of the soil. According to different functions, it can be divided into the following aspects: agglomerating and dispersing soil particles, improving soil structure; regulating soil pH; increasing soil temperature; and maintaining soil moisture.

[0003] The existing composition for fertilization and conditioning uses simple raw materials and existing preparation processes, but has poor efficiency in improving soil fertility and water retention, and poor effect on improving crop growth quality, which limits the use efficiency of the composition product. Based on this, the present invention further improves and processes it. Summary of the invention

[0004] In view of the defects of the prior art, the purpose of the present invention is to provide a composition for carbon-water coordinated fertilization and conditioning and a preparation method thereof, so as to solve the problems raised in the above background technology.

[0005] The present invention solves the technical problem by adopting the following technical solution:

[0006] The present invention provides a composition for carbon-water coordinated fertilization and conditioning, and the composition for fertilization and conditioning comprises the following raw materials in parts by weight:

[0007] 45-50 parts of inorganic compound fertilizer, 25-30 parts of organic matter agent, 10-15 parts of biochar, 8-12 parts of functional modifier based on multi-effect adjustment, 5-9 parts of water retaining agent, 4-7 parts of nanotube agent doped with kaolin, and 2-5 parts of trace elements.

[0008] Preferably, the inorganic compound fertilizer is N, P2O5, and K2O in a weight ratio of 26-12-10;

[0009] The organic agent is prepared by uniformly mixing 3-6 parts by weight of humic acid, 2-5 parts by weight of alginic acid, 2-5 parts by weight of melaleuca and 2-5 parts by weight of polyaspartic acid;

[0010] The biochar is apple tree branch biochar, which is prepared by thermal cracking the apple tree branch at 450-500° C. and under oxygen-limited conditions for 8 hours.

[0011] Preferably, the trace elements are iron, zinc and boron mixed in a weight ratio of 2:1:1;

[0012] The water retaining agent is a mixture of starch grafted acrylonitrile and cellulose grafted acrylonitrile in a weight ratio of 2:3.

[0013] Preferably, the preparation method of the multi-modulation functional modifier is:

[0014] S01: adding silicon carbide whiskers to a sodium citrate solution at a weight ratio of 2:5, and then adding a phosphate buffer solution containing 10-15% of the total amount of the silicon carbide whiskers and stirring thoroughly to obtain a whisker solution;

[0015] S02: 1-3 parts of sodium hexametaphosphate, 2-4 parts of silane coupling agent KH550, 1-2 parts of carboxymethyl cellulose

[0016] blending to obtain a modifier;

[0017] The modifier and the whisker liquid are ultrasonically treated in a weight ratio of 2:5, the ultrasonic power is 350-400W, the ultrasonic power is 40-50min, and after the ultrasonic treatment, the mixture is washed with water, filtered, and dried to obtain a whisker modifier;

[0018] S03: The whisker modifier and the effect-adjusting improver are mixed and ball-milled in a weight ratio of 5:3 at a ball-milling speed of 1000-1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water, filtered, and dried to obtain a functional modifier based on multi-effect-adjusting improver.

[0019] Preferably, the mass fraction of the sodium citrate solution is 4-7%; and the pH value of the phosphate buffer solution is 5.0-5.5.

[0020] Preferably, the effect-adjusting improver comprises the following raw materials in parts by weight:

[0021] 3-5 parts of flaky talc powder, 4-7 parts of dopamine hydrochloride solution, 1-2 parts of tetrabutyl titanate, 2-4 parts of diatomaceous earth and 3-6 parts of ethanol solvent.

[0022] Preferably, the mass fraction of the dopamine hydrochloride solution is 3-6%.

[0023] Preferably, the preparation method of the nanotube agent doped with metakaolin is:

[0024] S11: heat-treating the metakaolin at 145-155°C for 35-45 minutes, then dispersing it evenly in water at 2-5°C, then washing it with water and drying it; subjecting the dried metakaolin to proton irradiation treatment, with an irradiation power of 300-350W and an irradiation time of 20-30 minutes;

[0025] S12: adding 3-5 parts of single-walled carbon nanotubes and 1-3 parts of silane coupling agent KH560 to 4-7 parts of sodium lignin sulfonate solution, and then adding 2-4 parts of lanthanum oxide and 1-2 parts of hydroxyapatite agent, blending and stirring to obtain a modified nanotube solution;

[0026] The preparation method of the hydroxyapatite agent is as follows:

[0027] The hydroxyapatite is immersed in a sodium silicate solution with a mass fraction of 5% according to a weight ratio of 2:5, the ultrasonic power of the immersion is 300-350W, the ultrasonic time is 20-30min, and the immersion is completed to obtain the immersed hydroxyapatite;

[0028] 5-8 parts of immersed hydroxyapatite, 1-3 parts of nano-silica sol, 4-7 parts of chitosan solution with a mass fraction of 4-6%, and 1-3 parts of stearic acid are mixed and ball-milled thoroughly at a ball-milling speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a hydroxyapatite agent;

[0029] S13: subjecting the metakaolin treated in S11 and the modified nanotube liquid to ultrasonic modification treatment at a weight ratio of 2:5. After the ultrasonic modification is completed, washing with water and drying are performed to obtain a nanotube agent doped with metakaolin.

[0030] Preferably, the mass fraction of the sodium lignin sulfonate solution is 4-7%; the ultrasonic power of the ultrasonic modification treatment is 450-500W, and the ultrasonic time is 20-30min.

[0031] The present invention also provides a method for preparing a composition for carbon-water coordinated fertilization and conditioning, comprising the following steps:

[0032] The composition of the present invention is obtained by fully blending an inorganic compound fertilizer, an organic matter agent, biochar, a functional modifier based on multi-effect adjustment, a water retaining agent, a nanotube agent regulated by doping metakaolin, and trace elements.

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

[0034] The composition for fertilization and conditioning adopts a carbonized compound fertilizer composition, and a compound of organic and inorganic fertilizers, which can enhance the conditioning effect of fertilizers on soil, enhance the organic matter content of soil, coordinately improve the fertility and water retention efficiency of soil, and enhance the effect of fertilizers on soil, which can improve the growth quality of corn plants; based on the multi-effect functional modifier, silicon carbide whiskers are combined with sodium citrate solution, and then phosphate buffer solution is mixed and stirred to obtain whisker liquid, sodium hexametaphosphate, silane coupling agent KH550 and carboxymethyl cellulose are blended to obtain a modifier, and the modifier is combined with the whisker liquid The whisker modifier is a kind of functional modifier which is used to adjust and coordinate the dispersion and activity of the whiskers, and enhance the synergistic effect of the whisker modifier and the effect modifier. The effect modifier is a mixture of flaky talcum powder, dopamine hydrochloride solution, tetrabutyl titanate, diatomaceous earth and ethanol solvent. The flaky structure of flaky talcum powder is combined with diatomaceous earth to enhance the porosity and optimize the water retention capacity. At the same time, the field water holding capacity is improved, and the drought resistance and moisture retention capacity are improved. The raw materials in the effect modifier are adjusted and coordinated with each other to enhance the synergy, thereby enhancing the synergistic effect of the effect modifier and the whisker modifier. Then, the functional modifier based on multiple effect modifiers is further combined. The fertility of the soil and the water retention improvement efficiency of the enhanced product are coordinated and improved, and the growth quality of corn plants is improved; the nanotube agent doped with kaolin is first heat-treated with kaolin, and then treated with proton irradiation to optimize the activity of kaolin, and single-walled carbon nanotubes and silane coupling agent KH560 are added to the sodium lignin sulfonate solution, and then lanthanum oxide and hydroxyapatite agent are mixed and stirred to fully obtain a modified nanotube liquid, and the modified nanotube liquid in the modified nanotube liquid is coordinated with hydroxyapatite agent, lanthanum oxide and other raw materials to work together to improve the kaolin, thereby The coordination and cooperation ability is enhanced. The hydroxyapatite agent is treated by immersing hydroxyapatite in a sodium silicate solution with a mass fraction of 5%. At the same time, it is mixed with nano-silica sol, chitosan solution with a mass fraction of 4-6%, and stearic acid and fully ball-milled to obtain a hydroxyapatite agent. The improved hydroxyapatite is used to coordinate the raw materials in the modified nanotube liquid, and the coordination and cooperation are jointly increased and enhanced. Through the coordination between the raw materials, the coordination and cooperation effect between the raw materials are enhanced, and then the coordination effect of the nanotube agent adjusted by kaolin and the functional modifier based on multi-effect adjustment is further enhanced, and the performance of the product is further improved. DETAILED DESCRIPTION

[0035] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The present embodiment provides a composition for carbon-water coordinated fertilization and conditioning, and the composition for fertilization and conditioning comprises the following raw materials in parts by weight:

[0037] 45-50 parts of inorganic compound fertilizer, 25-30 parts of organic matter agent, 10-15 parts of biochar, 8-12 parts of functional modifier based on multi-effect adjustment, 5-9 parts of water retaining agent, 4-7 parts of nanotube agent doped with kaolin, and 2-5 parts of trace elements.

[0038] The inorganic compound fertilizer of this embodiment is N, P2O5, K2O in a weight ratio of 26-12-10;

[0039] The organic agent is prepared by uniformly mixing 3-6 parts by weight of humic acid, 2-5 parts by weight of alginic acid, 2-5 parts by weight of melaleuca and 2-5 parts by weight of polyaspartic acid;

[0040] The biochar is apple tree branch biochar, which is prepared by thermal cracking the apple tree branch at 450-500° C. and under oxygen-limited conditions for 8 hours.

[0041] The trace elements in this embodiment are iron, zinc, and boron mixed in a weight ratio of 2:1:1;

[0042] The water retaining agent is a mixture of starch grafted acrylonitrile and cellulose grafted acrylonitrile in a weight ratio of 2:3.

[0043] The preparation method of the multi-modulation functional modifier of this embodiment is:

[0044] S01: adding silicon carbide whiskers to a sodium citrate solution at a weight ratio of 2:5, and then adding a phosphate buffer solution containing 10-15% of the total amount of the silicon carbide whiskers and stirring thoroughly to obtain a whisker solution;

[0045] S02: 1-3 parts of sodium hexametaphosphate, 2-4 parts of silane coupling agent KH550, 1-2 parts of carboxymethyl cellulose

[0046] blending to obtain a modifier;

[0047] The modifier and the whisker liquid are ultrasonically treated in a weight ratio of 2:5, the ultrasonic power is 350-400W, the ultrasonic power is 40-50min, and after the ultrasonic treatment, the mixture is washed with water, filtered, and dried to obtain a whisker modifier;

[0048] S03: The whisker modifier and the effect-adjusting improver are mixed and ball-milled in a weight ratio of 5:3 at a ball-milling speed of 1000-1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water, filtered, and dried to obtain a functional modifier based on multi-effect-adjusting improver.

[0049] The mass fraction of the sodium citrate solution in this embodiment is 4-7%; the pH value of the phosphate buffer solution is 5.0-5.5.

[0050] The effect adjustment improver of this embodiment comprises the following raw materials in parts by weight:

[0051] 3-5 parts of flaky talc powder, 4-7 parts of dopamine hydrochloride solution, 1-2 parts of tetrabutyl titanate, 2-4 parts of diatomaceous earth and 3-6 parts of ethanol solvent.

[0052] The mass fraction of the dopamine hydrochloride solution in this embodiment is 3-6%.

[0053] The preparation method of the nanotube agent doped with metakaolin in this embodiment is as follows:

[0054] S11: heat-treating the metakaolin at 145-155°C for 35-45 minutes, then dispersing it evenly in water at 2-5°C, then washing it with water and drying it; subjecting the dried metakaolin to proton irradiation treatment, with an irradiation power of 300-350W and an irradiation time of 20-30 minutes;

[0055] S12: adding 3-5 parts of single-walled carbon nanotubes and 1-3 parts of silane coupling agent KH560 to 4-7 parts of sodium lignin sulfonate solution, and then adding 2-4 parts of lanthanum oxide and 1-2 parts of hydroxyapatite agent, blending and stirring to obtain a modified nanotube solution;

[0056] The preparation method of the hydroxyapatite agent is as follows:

[0057] The hydroxyapatite is immersed in a sodium silicate solution with a mass fraction of 5% according to a weight ratio of 2:5, the ultrasonic power of the immersion is 300-350W, the ultrasonic time is 20-30min, and the immersion is completed to obtain the immersed hydroxyapatite;

[0058] 5-8 parts of immersed hydroxyapatite, 1-3 parts of nano-silica sol, 4-7 parts of chitosan solution with a mass fraction of 4-6%, and 1-3 parts of stearic acid are mixed and ball-milled thoroughly at a ball-milling speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a hydroxyapatite agent;

[0059] S13: subjecting the metakaolin treated in S11 and the modified nanotube liquid to ultrasonic modification treatment at a weight ratio of 2:5. After the ultrasonic modification is completed, washing with water and drying are performed to obtain a nanotube agent doped with metakaolin.

[0060] The mass fraction of the sodium lignin sulfonate solution in this embodiment is 4-7%; the ultrasonic power of the ultrasonic modification treatment is 450-500W, and the ultrasonic time is 20-30min.

[0061] The preparation method of a composition for carbon-water coordinated fertilization and conditioning of the present embodiment comprises the following steps:

[0062] The composition of the present invention is obtained by fully blending an inorganic compound fertilizer, an organic matter agent, biochar, a functional modifier based on multi-effect adjustment, a water retaining agent, a nanotube agent regulated by doping metakaolin, and trace elements.

[0063] Example 1.

[0064] The present embodiment provides a composition for carbon-water coordinated fertilization and conditioning, and the composition for fertilization and conditioning comprises the following raw materials in parts by weight:

[0065] 45 parts of inorganic compound fertilizer, 25 parts of organic matter agent, 10 parts of biochar, 8 parts of functional modifier based on multi-effect adjustment, 5 parts of water retaining agent, 4 parts of nanotube agent doped with kaolin, and 2 parts of trace elements.

[0066] The inorganic compound fertilizer of this embodiment is N, P2O5, K2O in a weight ratio of 26-12-10;

[0067] The organic agent is prepared by uniformly mixing 3 parts by weight of humic acid, 2 parts by weight of alginic acid, 2 parts by weight of melaleuca and 2 parts by weight of polyaspartic acid;

[0068] The biochar is apple tree branch biochar, which is prepared by thermal cracking the apple tree branch at 450° C. and under oxygen-limited conditions for 8 hours.

[0069] The trace elements in this embodiment are iron, zinc, and boron mixed in a weight ratio of 2:1:1;

[0070] The water retaining agent is a mixture of starch grafted acrylonitrile and cellulose grafted acrylonitrile in a weight ratio of 2:3.

[0071] The preparation method of the multi-modulation functional modifier of this embodiment is:

[0072] S01: adding silicon carbide whiskers to a sodium citrate solution at a weight ratio of 2:5, and then adding a phosphate buffer solution containing 10% of the total amount of silicon carbide whiskers and stirring thoroughly to obtain a whisker solution;

[0073] S02: Blending 1 part of sodium hexametaphosphate, 2 parts of silane coupling agent KH550, and 1 part of carboxymethyl cellulose to obtain a modifier;

[0074] The modifier and the whisker liquid were subjected to ultrasonic treatment in a weight ratio of 2:5, the ultrasonic power was 350 W, the ultrasonic treatment lasted for 40 min, and after the ultrasonic treatment was completed, the mixture was washed with water, filtered, and dried to obtain the whisker modifier;

[0075] S03: The whisker modifier and the effect-adjusting improver are mixed and ball-milled in a weight ratio of 5:3 at a ball-milling speed of 1000 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water, filtered, and dried to obtain a functional modifier based on multi-effect-adjusting improver.

[0076] The mass fraction of the sodium citrate solution in this embodiment is 4%; the pH value of the phosphate buffer solution is 5.0.

[0077] The effect adjustment improver of this embodiment comprises the following raw materials in parts by weight:

[0078] 3 parts of flaky talc powder, 4 parts of dopamine hydrochloride solution, 1 part of tetrabutyl titanate, 2 parts of diatomaceous earth and 3 parts of ethanol solvent.

[0079] The mass fraction of the dopamine hydrochloride solution in this embodiment is 3%.

[0080] The preparation method of the nanotube agent doped with metakaolin in this embodiment is as follows:

[0081] S11: The metakaolin is first heat treated at 145°C for 35 minutes, then dispersed evenly in water at 2°C, then washed and dried; the dried metakaolin is subjected to proton irradiation treatment, with an irradiation power of 300W and an irradiation time of 20 minutes;

[0082] S12: adding 3 parts of single-walled carbon nanotubes and 1 part of silane coupling agent KH560 to 4 parts of sodium lignin sulfonate solution, and then adding 2 parts of lanthanum oxide and 1 part of hydroxyapatite agent, blending and stirring to obtain a modified nanotube solution;

[0083] The preparation method of the hydroxyapatite agent is as follows:

[0084] The hydroxyapatite is immersed in a sodium silicate solution with a mass fraction of 5% according to a weight ratio of 2:5, the ultrasonic power of the immersion is 300W, the ultrasonic time is 20 minutes, and the immersion is completed to obtain the immersed hydroxyapatite;

[0085] 5 parts of immersed hydroxyapatite, 1 part of nano-silica sol, 4 parts of chitosan solution with a mass fraction of 4%, and 1 part of stearic acid are mixed and ball-milled thoroughly at a ball-milling speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a hydroxyapatite agent;

[0086] S13: subjecting the metakaolin treated in S11 and the modified nanotube liquid to ultrasonic modification treatment at a weight ratio of 2:5. After the ultrasonic modification is completed, washing with water and drying are performed to obtain a nanotube agent doped with metakaolin.

[0087] The mass fraction of the sodium lignin sulfonate solution in this example is 4%; the ultrasonic power of the ultrasonic modification treatment is 450 W, and the ultrasonic time is 20 min.

[0088] The preparation method of a composition for carbon-water coordinated fertilization and conditioning of the present embodiment comprises the following steps:

[0089] The composition of the present invention is obtained by fully blending an inorganic compound fertilizer, an organic matter agent, biochar, a functional modifier based on multi-effect adjustment, a water retaining agent, a nanotube agent regulated by doping metakaolin, and trace elements.

[0090] Example 2.

[0091] The present embodiment provides a composition for carbon-water coordinated fertilization and conditioning, and the composition for fertilization and conditioning comprises the following raw materials in parts by weight:

[0092] 50 parts of inorganic compound fertilizer, 30 parts of organic matter agent, 15 parts of biochar, 12 parts of functional modifier based on multi-effect adjustment, 9 parts of water retaining agent, 7 parts of nanotube agent doped with kaolin, and 5 parts of trace elements.

[0093] The inorganic compound fertilizer of this embodiment is N, P2O5, K2O in a weight ratio of 26-12-10;

[0094] The organic agent is prepared by uniformly mixing 6 parts by weight of humic acid, 5 parts by weight of alginic acid, 5 parts by weight of melaleuca and 5 parts by weight of polyaspartic acid;

[0095] The biochar is apple tree branch biochar, which is prepared by thermal cracking the apple tree branch at 500° C. and under oxygen-limited conditions for 8 hours.

[0096] The trace elements in this embodiment are iron, zinc, and boron mixed in a weight ratio of 2:1:1;

[0097] The water retaining agent is a mixture of starch grafted acrylonitrile and cellulose grafted acrylonitrile in a weight ratio of 2:3.

[0098] The preparation method of the multi-modulation functional modifier of this embodiment is:

[0099] S01: adding silicon carbide whiskers to a sodium citrate solution at a weight ratio of 2:5, and then adding a phosphate buffer solution containing 15% of the total amount of silicon carbide whiskers and stirring thoroughly to obtain a whisker solution;

[0100] S02: 3 parts of sodium hexametaphosphate, 4 parts of silane coupling agent KH550, and 2 parts of carboxymethyl cellulose are blended to obtain a modifier;

[0101] The modifier and the whisker liquid are ultrasonically treated in a weight ratio of 2:5, the ultrasonic power is 400 W, the ultrasonication lasts for 50 minutes, and after the ultrasonication is finished, the mixture is washed with water, filtered, and dried to obtain a whisker modifier;

[0102] S03: The whisker modifier and the effect-adjusting improver are mixed and ball-milled in a weight ratio of 5:3 at a ball-milling speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water, filtered, and dried to obtain a functional modifier based on multi-effect-adjusting improver.

[0103] The mass fraction of the sodium citrate solution in this embodiment is 7%; the pH value of the phosphate buffer solution is 5.5.

[0104] The effect adjustment improver of this embodiment comprises the following raw materials in parts by weight:

[0105] 5 parts of flaky talc, 7 parts of dopamine hydrochloride solution, 2 parts of tetrabutyl titanate, 4 parts of diatomaceous earth and 6 parts of ethanol solvent.

[0106] The mass fraction of the dopamine hydrochloride solution in this embodiment is 6%.

[0107] The preparation method of the nanotube agent doped with metakaolin in this embodiment is as follows:

[0108] S11: The metakaolin is first heat treated at 155°C for 45 minutes, then dispersed evenly in water at 5°C, then washed and dried; the dried metakaolin is subjected to proton irradiation treatment, with an irradiation power of 350W and an irradiation time of 30 minutes;

[0109] S12: adding 5 parts of single-walled carbon nanotubes and 3 parts of silane coupling agent KH560 to 7 parts of sodium lignin sulfonate solution, and then adding 4 parts of lanthanum oxide and 2 parts of hydroxyapatite agent to mix and stir to obtain a modified nanotube solution;

[0110] The preparation method of the hydroxyapatite agent is as follows:

[0111] The hydroxyapatite is immersed in a sodium silicate solution with a mass fraction of 5% according to a weight ratio of 2:5, the ultrasonic power of the immersion is 350W, the ultrasonic time is 30 minutes, and the immersion is completed to obtain the immersed hydroxyapatite;

[0112] 8 parts of immersed hydroxyapatite, 3 parts of nano-silica sol, 7 parts of chitosan solution with a mass fraction of 6%, and 3 parts of stearic acid are mixed and ball-milled thoroughly at a ball-milling speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a hydroxyapatite agent;

[0113] S13: subjecting the metakaolin treated in S11 and the modified nanotube liquid to ultrasonic modification treatment at a weight ratio of 2:5. After the ultrasonic modification is completed, washing with water and drying are performed to obtain a nanotube agent doped with metakaolin.

[0114] The mass fraction of the sodium lignin sulfonate solution in this example is 7%; the ultrasonic power of the ultrasonic modification treatment is 500 W, and the ultrasonic time is 30 min.

[0115] The preparation method of a composition for carbon-water coordinated fertilization and conditioning of the present embodiment comprises the following steps:

[0116] The composition of the present invention is obtained by fully blending an inorganic compound fertilizer, an organic matter agent, biochar, a functional modifier based on multi-effect adjustment, a water retaining agent, a nanotube agent regulated by doping metakaolin, and trace elements.

[0117] Example 3.

[0118] The present embodiment provides a composition for carbon-water coordinated fertilization and conditioning, and the composition for fertilization and conditioning comprises the following raw materials in parts by weight:

[0119] 47.5 parts of inorganic compound fertilizer, 27.5 parts of organic matter agent, 12.5 parts of biochar, 10 parts of functional modifier based on multi-effect adjustment, 7 parts of water retaining agent, 5.5 parts of nanotube agent doped with kaolin, and 3.5 parts of trace elements.

[0120] The inorganic compound fertilizer of this embodiment is N, P2O5, K2O in a weight ratio of 26-12-10;

[0121] The organic agent is prepared by uniformly mixing 4.5 parts by weight of humic acid, 3.5 parts by weight of alginic acid, 3.5 parts by weight of melaleuca and 3.5 parts by weight of polyaspartic acid;

[0122] The biochar is apple tree branch biochar, which is prepared by thermal cracking the apple tree branch at 470° C. and under oxygen-limited conditions for 8 hours.

[0123] The trace elements in this embodiment are iron, zinc, and boron mixed in a weight ratio of 2:1:1;

[0124] The water retaining agent is a mixture of starch grafted acrylonitrile and cellulose grafted acrylonitrile in a weight ratio of 2:3.

[0125] The preparation method of the multi-modulation functional modifier of this embodiment is:

[0126] S01: adding silicon carbide whiskers to a sodium citrate solution at a weight ratio of 2:5, and then adding a phosphate buffer solution containing 12.5% ​​of the total amount of silicon carbide whiskers and stirring thoroughly to obtain a whisker solution;

[0127] S02: 2 parts of sodium hexametaphosphate, 3 parts of silane coupling agent KH550, 1.5 parts of carboxymethyl cellulose

[0128] blending to obtain a modifier;

[0129] The modifier and the whisker liquid were subjected to ultrasonic treatment in a weight ratio of 2:5, the ultrasonic power was 370 W, the ultrasonic treatment lasted for 47.5 min, and after the ultrasonic treatment was completed, the whisker modifier was washed with water, filtered, and dried to obtain the whisker modifier;

[0130] S03: The whisker modifier and the effect-adjusting improver are mixed in a weight ratio of 5:3 and ball-milled at a speed of 1250 r / min for 2 h. After the ball-milling is completed, the mixture is washed with water, filtered, and dried to obtain a functional modifier based on multi-effect-adjusting improver.

[0131] The mass fraction of the sodium citrate solution in this embodiment is 5.5%; the pH value of the phosphate buffer solution is 5.2.

[0132] The effect adjustment improver of this embodiment comprises the following raw materials in parts by weight:

[0133] 4 parts of flaky talc, 5.5 parts of dopamine hydrochloride solution, 1.5 parts of tetrabutyl titanate, 3 parts of diatomaceous earth and 4.5 parts of ethanol solvent.

[0134] The mass fraction of the dopamine hydrochloride solution in this embodiment is 4.5%.

[0135] The preparation method of the nanotube agent doped with metakaolin in this embodiment is as follows:

[0136] S11: The metakaolin is first heat treated at 150°C for 40 minutes, then dispersed evenly in water at 3.5°C, then washed and dried; the dried metakaolin is subjected to proton irradiation treatment, with an irradiation power of 325W and an irradiation time of 25 minutes;

[0137] S12: adding 4 parts of single-walled carbon nanotubes and 2 parts of silane coupling agent KH560 to 5.5 parts of sodium lignin sulfonate solution, and then adding 3 parts of lanthanum oxide and 1.5 parts of hydroxyapatite agent, blending and stirring to obtain a modified nanotube solution;

[0138] The preparation method of the hydroxyapatite agent is as follows:

[0139] The hydroxyapatite is immersed in a sodium silicate solution with a mass fraction of 5% according to a weight ratio of 2:5, the ultrasonic power of the immersion is 320W, the ultrasonic time is 25 minutes, and the immersion is completed to obtain the immersed hydroxyapatite;

[0140] 6.5 parts of the immersed hydroxyapatite, 2 parts of nano-silica sol, 5.5 parts of chitosan solution with a mass fraction of 5%, and 2 parts of stearic acid are mixed and ball-milled thoroughly at a ball-milling speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a hydroxyapatite agent;

[0141] S13: subjecting the metakaolin treated in S11 and the modified nanotube liquid to ultrasonic modification treatment at a weight ratio of 2:5. After the ultrasonic modification is completed, washing with water and drying are performed to obtain a nanotube agent doped with metakaolin.

[0142] The mass fraction of the sodium lignin sulfonate solution in this example is 5.5%; the ultrasonic power of the ultrasonic modification treatment is 475 W, and the ultrasonic time is 25 min.

[0143] The preparation method of a composition for carbon-water coordinated fertilization and conditioning of the present embodiment comprises the following steps:

[0144] The composition of the present invention is obtained by fully blending an inorganic compound fertilizer, an organic matter agent, biochar, a functional modifier based on multi-effect adjustment, a water retaining agent, a nanotube agent regulated by doping metakaolin, and trace elements.

[0145]

[0146] It can be seen from Examples 1-3 that the nitrogen fertilizer utilization rate in the product of Example 3 is as high as 50.1%, and the phosphorus fertilizer utilization rate is as high as over 29%, which has excellent utilization effect.

[0147] Comparative Example 1.

[0148] The difference from Example 3 is that no multi-modulation-based functional modifier is added.

[0149] Comparative Example 2.

[0150] The difference from Example 3 is that no modifier is added in the preparation of the functional modifier based on multi-effect adjustment.

[0151] Comparative Example 3.

[0152] The difference from Example 3 is that no whisker liquid is added to the whisker modifier.

[0153] Comparative Example 4.

[0154] The difference from Example 3 is that the multi-effect-adjusting functional modifier is not treated with an effect-adjusting improver.

[0155] Comparative Example 5.

[0156] The difference from Example 3 is that no flaky talc is added to the effect adjustment improver.

[0157] Comparative Example 6.

[0158] The difference from Example 3 is that diatomaceous earth is not added to the performance improvement agent.

[0159] Comparative Example 7.

[0160] The difference from Example 3 is that dopamine hydrochloride solution and tetrabutyl titanate are not added to the efficacy improving agent.

[0161] Comparative Example 8.

[0162] The difference from Example 3 is that no nanotube agent adjusted by doping metakaolin is added.

[0163] Comparative Example 9.

[0164] The difference from Example 3 is that no S11-treated metakaolin was added in the preparation of the nanotube agent doped with metakaolin.

[0165] Comparative Example 10.

[0166] The difference from Example 3 is that the modified nanotube liquid treatment is not used in the preparation of the nanotube agent adjusted by doping metakaolin.

[0167] Comparative Example 11.

[0168] The difference from Example 3 is that no single-walled carbon nanotubes or silane coupling agent KH560 is added in the treatment of the modified nanotube liquid.

[0169] Comparative Example 12.

[0170] The difference from Example 3 is that no hydroxyapatite agent is added in the treatment of the modified nanotube liquid.

[0171] Comparative Example 13.

[0172] The difference from Example 3 is that lanthanum oxide was not added in the treatment of the modified nanotube solution, and deionized water was used instead of the sodium lignin sulfonate solution.

[0173] The performance of corn planting was tested using the products of Examples 1-3 and Comparative Examples 1-13. First, the organic matter content of the soil was tested according to the standard of GB9834-88. Then, the test product was fertilized at a dosage of 30 kg / mu per mu. When the corn was mature, the growth quality of the corn was tested. At the same time, the test product was added to the soil in an amount of 1:200 and placed in a 500 mL beaker. The test weight was recorded as A. Then a certain amount of tap water was added to saturate the soil. The test weight was recorded as B after a period of time. The ratio of B to A was used to test the water retention performance of the soil. The measurement results are as follows

[0174]

[0175]

[0176] It is concluded from Examples 1-3 and Comparative Examples 1-13 that

[0177] The product of Example 3 of the present invention has excellent soil organic matter content and average per-acre yield, and the soil water retention rate performance effect is significant. The innovation of the present invention is that corn can be highly yielded under drought conditions, and the product used has efficient water retention performance and can be suitable for corn growth needs under drought conditions;

[0178] From comparative examples 1-13, it can be seen that the product performance deteriorates significantly when the present invention does not add a functional modifier based on multi-effect adjustment and does not add a nanotube agent adjusted by doping metakaolin. The two are used in coordination to enhance the performance of the product in a coordinated manner.

[0179] No modifier was added in the preparation of the functional modifier based on multi-modulation effect, no whisker liquid was added to the whisker modifier, the functional modifier based on multi-modulation effect was not treated with an effect-adjusting improver, no flaky talcum powder was added to the effect-adjusting improver, no diatomaceous earth was added to the effect-adjusting improver, no dopamine hydrochloride solution and tetrabutyl titanate were added to the effect-adjusting improver, and the performance of the products showed a trend of deterioration;

[0180] Only the multi-adjustment functional modifier obtained by the method of the present invention and the whisker modifier of the present invention can achieve the most significant performance effect of the product. The effect of using other methods instead is not as obvious as that of the present invention.

[0181] The metakaolin treated with S11 was not added in the preparation of the nanotube agent adjusted by doping metakaolin, the modified nanotube liquid treatment was not used in the preparation of the nanotube agent adjusted by doping metakaolin, the single-walled carbon nanotubes and the silane coupling agent KH560 were not added in the modified nanotube liquid treatment, the hydroxyapatite agent was not added in the modified nanotube liquid treatment, the lanthanum oxide was not added in the modified nanotube liquid treatment, and the sodium lignin sulfonate solution was replaced by deionized water. The performance of the product showed a trend of deterioration to varying degrees;

[0182] The performance effect of the product prepared by the modified nanotube liquid treatment obtained by the method of the present invention and the nanotube agent doped with kaolin prepared by the modified nanotube liquid treatment of the present invention is the most significant. At the same time, no hydroxyapatite agent is added to the modified nanotube liquid treatment, and the performance of the product also shows a more obvious trend of deterioration.

[0183] Based on the above tests, the present invention found that hydroxyapatite has a greater impact on the performance of the product. Based on this, the present invention further explores it.

[0184] Experimental example 1.

[0185] The only difference from Example 3 is that the hydroxyapatite agent is not immersed in a sodium silicate solution during preparation.

[0186] Experimental example 2.

[0187] The only difference from Example 3 is that the hydroxyapatite agent is replaced by hydroxyapatite.

[0188] Experimental Example 3.

[0189] The only difference from Example 3 is that no nano-silica sol and stearic acid are added in the preparation of the hydroxyapatite agent.

[0190] Experimental Example 4.

[0191] The only difference from Example 3 is that the chitosan solution is replaced by deionized water.

[0192]

[0193] It can be seen from Experimental Examples 1-4 that when hydroxyapatite agent is replaced by hydroxyapatite, the performance of the product shows a more obvious trend of deterioration. At the same time, sodium silicate solution immersion treatment is not used in the preparation of hydroxyapatite agent, and the product performance also shows a trend of deterioration. In addition, nano-silica sol and stearic acid are not added in the preparation of hydroxyapatite agent, and deionized water is used instead of chitosan solution. The performance of the product has a trend of deterioration. Only the hydroxyapatite agent obtained by the method of the present invention has the most significant product performance effect. The effects of other methods are not as obvious as those of the present invention.

[0194] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0195] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A composition for carbon-water coordinated fertilization and conditioning, characterized in that: The composition for fertilization and conditioning comprises the following raw materials in parts by weight: 45-50 parts of inorganic compound fertilizer, 25-30 parts of organic matter agent, 10-15 parts of biochar, 8-12 parts of functional modifier based on multi-effect adjustment, 5-9 parts of water retaining agent, 4-7 parts of nanotube agent doped with kaolin, and 2-5 parts of trace elements.

2. The composition for carbon-water coordinated fertilization and conditioning according to claim 1, characterized in that: The inorganic compound fertilizer is N, P2 O5, K2 O in a weight ratio of 26-12-10; The organic agent is prepared by uniformly mixing 3-6 parts by weight of humic acid, 2-5 parts by weight of alginic acid, 2-5 parts by weight of melaleuca and 2-5 parts by weight of polyaspartic acid; The biochar is apple tree branch biochar, which is prepared by thermal cracking the apple tree branch at 450-500° C. and under oxygen-limited conditions for 8 hours.

3. The composition for carbon-water coordinated fertilization and conditioning according to claim 1, characterized in that: The trace elements are iron, zinc and boron mixed in a weight ratio of 2:1:1; The water retaining agent is a mixture of starch grafted acrylonitrile and cellulose grafted acrylonitrile in a weight ratio of 2:

3.

4. The composition for carbon-water coordinated fertilization and conditioning according to claim 1, characterized in that: The preparation method of the functional modifier based on multi-effect modulation is: S01: adding silicon carbide whiskers to a sodium citrate solution at a weight ratio of 2:5, and then adding a phosphate buffer solution containing 10-15% of the total amount of the silicon carbide whiskers and stirring thoroughly to obtain a whisker solution; S02: Blending 1-3 parts of sodium hexametaphosphate, 2-4 parts of silane coupling agent KH550, and 1-2 parts of carboxymethyl cellulose to obtain a modifier; The modifier and the whisker liquid are ultrasonically treated in a weight ratio of 2:5, the ultrasonic power is 350-400W, the ultrasonic power is 40-50min, and after the ultrasonic treatment, the mixture is washed with water, filtered, and dried to obtain a whisker modifier; S03: The whisker modifier and the effect-adjusting improver are mixed and ball-milled in a weight ratio of 5:3 at a ball-milling speed of 1000-1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water, filtered, and dried to obtain a functional modifier based on multi-effect-adjusting improver.

5. The composition for carbon-water coordinated fertilization and conditioning according to claim 4, characterized in that: The mass fraction of the sodium citrate solution is 4-7%; the pH value of the phosphate buffer solution is 5.0-5.

5.

6. The composition for carbon-water coordinated fertilization and conditioning according to claim 4, characterized in that: The effect adjustment improver comprises the following raw materials in parts by weight: 3-5 parts of flaky talc powder, 4-7 parts of dopamine hydrochloride solution, 1-2 parts of tetrabutyl titanate, 2-4 parts of diatomaceous earth and 3-6 parts of ethanol solvent.

7. The composition for carbon-water coordinated fertilization and conditioning according to claim 6, characterized in that: The mass fraction of the dopamine hydrochloride solution is 3-6%.

8. The composition for carbon-water coordinated fertilization and conditioning according to claim 1, characterized in that: The preparation method of the nanotube agent doped with metakaolin: S11: heat-treating the metakaolin at 145-155°C for 35-45 minutes, then dispersing it evenly in water at 2-5°C, then washing it with water and drying it; subjecting the dried metakaolin to proton irradiation treatment, with an irradiation power of 300-350W and an irradiation time of 20-30 minutes; S12: adding 3-5 parts of single-walled carbon nanotubes and 1-3 parts of silane coupling agent KH560 to 4-7 parts of sodium lignin sulfonate solution, and then adding 2-4 parts of lanthanum oxide and 1-2 parts of hydroxyapatite agent, blending and stirring to obtain a modified nanotube solution; The preparation method of the hydroxyapatite agent is as follows: The hydroxyapatite is immersed in a sodium silicate solution with a mass fraction of 5% according to a weight ratio of 2:5, the ultrasonic power of the immersion is 300-350W, the ultrasonic time is 20-30min, and the immersion is completed to obtain the immersed hydroxyapatite; 5-8 parts of immersed hydroxyapatite, 1-3 parts of nano-silica sol, 4-7 parts of chitosan solution with a mass fraction of 4-6%, and 1-3 parts of stearic acid are mixed and ball-milled thoroughly at a ball-milling speed of 1500 r / min for 2 hours. After the ball-milling is completed, the mixture is washed with water and dried to obtain a hydroxyapatite agent; S13: subjecting the metakaolin treated in S11 and the modified nanotube liquid to ultrasonic modification treatment at a weight ratio of 2:

5. After the ultrasonic modification is completed, washing with water and drying are performed to obtain a nanotube agent doped with metakaolin.

9. The composition for carbon-water coordinated fertilization and conditioning according to claim 8, characterized in that: The mass fraction of the sodium lignin sulfonate solution is 4-7%; the ultrasonic power of the ultrasonic modification treatment is 450-500W, and the ultrasonic time is 20-30min.

10. A method for preparing the composition for carbon-water coordinated fertilization and conditioning as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: The composition of the present invention is obtained by fully blending an inorganic compound fertilizer, an organic matter agent, biochar, a functional modifier based on multi-effect adjustment, a water retaining agent, a nanotube agent regulated by doping metakaolin, and trace elements.

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