65results about How to "Inhibition of urease activity" patented technology

The invention relates to algae-enhanced urea and a production method thereof. According to the invention, a fertilizer is produced through steps that: natural algae and urea are adopted as raw materials; algae is subject to microbe fermentation, and is subject to processes such as extraction and press-filtration, such that an algae enhancing liquid is prepared; molten urea solution and the algae enhancing liquid are granulated in an urea granulating tower, such that the algae-enhanced urea provided by the invention is obtained. With the algae-enhanced urea, soil urease activity can be substantially inhibited. The algae-enhanced urea has an enhanced fertilizer releasing-retarding effect. With the algae-enhanced urea, a utilization rate of fertilizer is improved by 5-10%, and agricultural cultivation can be simplified; nutrient loss can be reduced; secondary pollution can be avoided; and agricultural production cost can be reduced. The algae-enhanced urea is advantaged in wide raw material source, convenient transportation, and convenient application. With the algae-enhanced urea, mechanical working can easily be carried out. Therefore, the algae-enhanced urea has a wide prospect in production.

The invention relates to a fermented alga liquid fertilizer synergist and a production method and an application thereof. The fertilizer synergist is a fermented alga liquid fertilizer synergist obtained by performing microbial fermentation on natural alga serving as a raw material, preparing an alga extracting solution through procedures such as alkali extraction, filter pressing and the like, and adding chelated state trace elements into a liquid. Due to the adoption of the fermented alga liquid fertilizer synergist disclosed by the invention, the soil urease activity can be suppressed remarkably, slow release of a fertilizer is enhanced, and the crop yield can be increased remarkably; trace elements such as boron, zinc, manganese and the like which are generally lacked in soil in China can be replenished; root growth of crops can be facilitated, root activity is increased, and the capabilities of crops of absorbing phosphorus, potassium and medium and trace elements are increased; and the fermented alga liquid fertilizer synergist has the characteristics of reduction in nutrient loss, avoidance of secondary pollution, reduction in the production cost of a synergic fertilizer, wide raw material source, convenience for adding in fertilizer production and the like, and has a wide application prospect in the production of the synergic fertilizer.

The invention relates to lignin-bound biochar coated urea and a preparation method thereof and belongs to the technical field of utilization of agricultural biomass. A binder used in the lignin-bound biochar coated urea comprises acid-precipitated lignin, a pyroligneous liquid and water in different weight ratios. The preparation method comprises the following steps of dissolving acid-precipitated lignin in a pyroligneous liquid or a pyroligneous liquid and water to obtain the binder; and granulating, spraying and drying to obtain the lignin-bound biochar coated urea finished product. The binder is novel in components and environment-friendly; the preparation method is reasonable and simple, the preparation process is simple and feasible, low in production cost; and the urea has the advantages of high fertilizer utilization rate, long fertilizer effect time, light environmental pollution and good antibacterial effect, and the soil structure is improved.

The residue is produced into organic fertilizer or organic-inorganic composite fertilizer specially for tea garden through the process of microbial fermentation, anaerobic and aerobic fermentation, drying, and pelletizing. When it is applied in tea garden, amino acid and other macro molecular matters are absorbed directly by tea tree, and the tea polyphenol can inhibit the activity of the urease to raise the utilization of inorganic nitrogen fertilizer.

Fodder for growing and fattening pigs is characterized by being prepared from the following components in parts by weight: 25 parts of corn flour, 15 parts of extruded corn, 15 parts of vinasse, 15 parts of bean pulp, 15 parts of wheatmeal, 15 parts of wheat bran, 10 parts of rape seed cake, 0.10 parts of choline chloride, 0.10 parts of calcium hydrophosphate, 0.01 parts of natural steroid yucca saponin, 0.2 parts of methionine, 0.15 parts of threonine, 0.4 parts of lysine, 0.3 parts of table salt, 1 part of Chinese herbal medicine material, 0.01 parts of probiotics, 0.01 parts of pig multi-vitamin, 0.3 parts of trace mineral premix and 0.03 parts of complex enzyme. The fodder is reasonable in matching, can improve growth performance of the pigs, enhances the immunity of the pigs, reduces fodder waste, increases fodder nutrition absorption, and lowers nutrient excretion.

The invention discloses a special root-inducing slow release high-efficiency fertilizer for double cropping rice and a preparation and application method thereof. The preparation method comprises the following steps: mixing and blending nitrogen fertilizer and compound synergist in a blender for 3-5 minutes to obtain root-inducing slow release high-efficiency nitrogen fertilizer; and then, continuing to mix with phosphorus fertilizer and potassium fertilizer for about 5 minutes to obtain the finished fertilizer, wherein the compound synergist is prepared by uniformly mixing the following materials in percentage by weight: 3.4-3.8% of borax (B), 2-2.5% of hydroquinone (HQ), 0.9-1.4% of dicyandiamide (DCD), 33-36% of silicon fertilizer (SiO2), 9-14% of polyaspartic acid (PASP), 31-38% of humic acid (HA) and 9-12% of phosphorus activator. The finished fertilizer is used as basal fertilizer to be completely applied after rice soaking and in the early rice transplanting stage, and no additional fertilizer is required for the later stage; the amount of applied fertilizer for early rice is 40-45 kg / mu; and the amount of applied fertilizer for late rice is 50-55 kg / mu. The fertilizer disclosed by the invention has the dual effects of promoting root growth and delaying nutrient release, can greatly improve the nutrient utilization ratio and rice yield, is convenient to produce and use, and has the advantages of high technical compatibility, low cost, environment friendliness and the like.

The invention provides a pig feed capable of deodorizing, and a preparation method thereof, and belongs to the field of pig feed preparation. The pig feed is mainly prepared from, by weight, 60 to 80 parts of bean dregs, 15 to 20 parts of sugar beet pulp, 20 to 30 parts of rice bran, 10 to 20 parts of fly maggot powder, 2 to 3 parts of citric acid, 5 to 8 parts of vitamin, 25 to 35 parts of mixed mushroom bran, 0.5 to 0.8 part of nitrobacteria, 0.3 to 0.5 part of corynebacterium glutamicum, 0.2 to 0.3 part of mucor, 1 to 3 parts of an enzyme preparation, 6 to 9 parts of carbonized biomass, 20 to 30 parts of folium ginkgo powder, and 3 to 5 parts of waste tea powder. The pig feed is capable of providing pigs with sufficient and comprehensive nutrients, and can be absorbed easily; decomposition of intestinal tract waste residue is realized with microorganisms, ammonia substances in intestinal tract and excrement are absorbed by functional raw materials; the combined action of the raw materials is capable of promoting growth of pigs, reducing the stink of pig dung, and improving the environment in hog houses.

The invention provides a biological deodorant spray for pets as well as a preparation method and an application of the biological deodorant spray. The biological deodorant spray for the pets is prepared from main raw materials as follows: a micro-ecological agent and plant extract, wherein the micro-ecological agent contains one or more of a bacillus subtilis solution, a bacillus licheniformis solution, a bacillus coagulans solution, a lactobacillus acidophilus solution, a enterococcus faecalis solution and saccharomyces cerevisiae solution; the plant extract contains one or more of yucca extract, aloe extract, agastache rugosa extract, honeysuckle extract, ginkgo biloba leaf extract and tea polyphenol. The deodorant spray is safe, green, non-toxic and residue-free, has fermentation aromaand cannot cause secondary pollution to the environment, meanwhile, under the joint action of the micro-ecological agent and the plant extract, stink of excrement can be effectively reduced, air is purified, and hair odor of the pets can be removed.

The invention provides a pig feed used for reducing pig dung stink, and a preparation method thereof, and belongs to the technical field of pig feed. The pig feed is mainly prepared from following raw materials, by weight, 60 to 80 parts of bean dregs, 20 to 25 parts of cassava dregs, 40 to 60 parts of puffed corn flour, 8 to 15 parts of shrimp meal, 2 to 3 parts of citric acid, 5 to 8 parts of vitamin, 30 to 40 parts of mixed mushroom bran, 0.3 to 0.5 part of nitrobacteria, 0.5 to 0.8 part of brevibacterium glutamicus, 0.2 to 0.3 part of mucor, 2 to 4 parts of an enzyme preparation, 5 to 10 parts of carbonized biomass, 20 to 30 parts of folium ginkgo powder, and 6 to 10 parts of herba centipedae. The pig feed is capable of providing pigs with comprehensive and sufficient nutrients, is convenient to be absorbed and digested, is capable of degrading intestinal tract waste residue by microorganisms, absorbing ammonia substances in intestinal tract and pig dung with functional raw materials, promoting growth of pigs via the cooperation effect of the raw materials, reducing pig dung stink, and improving the environment in hog houses.

The invention relates to environmental improved compound functional additive specially used for livestock and poultry, and the preparation and application thereof. The weight composition of the additive is as follows: 5 percent to 10 percent of yucca extract, 15 percent to 30 percent of oligomeric isomaltose, 40 percent to 60 percent of sodium turface, 3 percent to 6 percent of lactobacillus dry powder, 3 percent to 10 percent of liquorice extract, 3 percent to 6 percent of cimetidine and 5 percent to 12 percent of lycine. The prescription of the invention is scientific, high-efficiency, safe and environment protective. The physiological characteristics and the growth demand of the livestock and poultry are fully considered, and the regulation to the livestock and poultry environment is conducted from all aspects, such as elevating the feed safety, improving the physiological functions of the digestion system of the livestock and poultry, inhibiting urease activity, absorbing all harmful components, etc. and has more obvious effect.

The invention discloses a special functional melt granulated humic acid fertilizer and a production method thereof. The production method comprises the following steps: proportionally weighing urea, monoammonium phosphate, potassium chloride, humic acid and additives as raw materials; adding preheated monoammonium phosphate, potassium chloride, humic acid and other powdery materials into the urea molten liquid; under the actions of molten liquid temperature and mechanical stirring, quickly compounding an eutectoid with certain flowing property; granulating by a spray granulation technique in a granulation tower; and when the sprayed drops in the falling process in the granulation tower exchange heat with ascending air flow to be quickly cooled and solidified, forming the special functional melt granulated humic acid fertilizer. The special fertilizer disclosed by the invention has the advantages of high fertilizer efficiency and environmental protection, enhances the soil activity, and conforms to the development trend of the green environmental-protection fertilizer.

The invention relates to a stable long-acting compound fertilizer which comprises the following components in parts by weight: 50-130 parts of coated urea, 10-25 parts of calcium superphosphate, 5-20parts of ammonium chloride, 7-25 parts of potassium chloride, 10-30 parts of sweet potato type citric acid residue, 6-30 parts of vinasse, 3-18 parts of EDTA chelated zinc, 4-20 parts of amino acid chelated iron, 10-25 parts of plant growth regulator, 5-18 parts of urease inhibitor and 6-28 parts of an anti-caking agent. The compound fertilizer disclosed by the invention can meet the requirement of crops on nutrition, is reasonable in proportioning, slowly releases nutrients, improves the utilization rate of the fertilizer, promotes the crops to absorb nutrition, enhances the stress resistanceof the crops and reduces soil hardening and environmental pollution caused by fertilizer loss.

The invention discloses organic-inorganic compound fertilizer for tea trees. The organic-inorganic compound fertilizer is prepared from the following raw materials: straw powder, rapeseed meal, traditional Chinese medicinal residues, urea, rare earth phosphate fertilizer, potassium nitrate, sodium selenate, zinc sulfate, carnallite powder, kaolin, zeolite powder, basalt powder, modified diatomite, citric acid, oxalic acid, methyl a-naphthylacetate, compound sodium nitrophenolate and nitrogen pyridine. The organic-inorganic compound fertilizer for the tea trees, provided by the invention, has the advantages of reasonable formula and high fertilizer efficiency; the incidence of disease and insect pests of the tee trees is reduced and stress resistance of the tea trees is improved; meanwhile, the ecological environment of soil is improved, the fertility and the sustainability of the soil are improved, and the yield of the tea trees is increased; the content of nutrient substances such as trace elements in the tea trees is high, and the quality of the tea trees is improved effectively.

The invention relates to application of thiourea-formaldehyde resin in inhibition of urease in soil. Thiourea resin is added into soil as a novel urease inhibitor to inhibit the activity of urease inthe soil. The adding amount of the thiourea-formaldehyde resin is 10-50g per kilogram of soil. As a novel urease inhibitor, thiourea resin scrambles for ligands to reduce the urease activity, the inhibition mechanism is clear, and the urease activity can be effectively inhibited. The invention opens up a new application field of thiourea resin in inhibition of urease, and the inhibition activity is superior to that of the recognized urease inhibitor NBPT. The thiourea-formaldehyde resin has rich sources of synthesis raw materials, the price is low, also the adding amount of the thiourea-formaldehyde resin is small, and the effect is stable after the thiourea-formaldehyde resin is applied to soil. Along with the increase of the dosage, the inhibition effect is greatly improved. And the adding of the thiourea-formaldehyde resin does not change the pH value of the soil, and has little influence on the physicochemical properties of the soil.

The invention relates to an antibiotic-free premix feed for breeding sows. The antibiotic-free premix feed is prepared from the following components of table salt, lysine, bone meal, compound enzymes, choline chloride, chromium nicotinate, radix codonopsis, radix astragali, Chinese wolfberry fruits, radix scutellariae, methionine, threonine, vitamin A, vitamin D, vitamin E, vitamin B, folic acid, selenium yeast, cysteamine hydrochloride and soybean flavone, and besides, yucca, radix angelicae sinensis, radix rehmanniae preparata and pine needles are particularly added to be used as pig feed additives for replacing Western medicines and antibiotic drugs, so that the immunity of sows can also be enhanced, and the propagation performance of the sows can also be effectively improved. The antibiotic-free premix feed disclosed by the invention can supply adequate nutrients for the growth of the sows, complements various vitamins and minerals, and does not contain antibiotics, so that the antibiotics are avoided from being enriched in bodies of the breeding sows to influence the properties of piggies, and the antibiotic-free premix feed conforms to the health concept of modern people.

The invention discloses a zinc humic acid long-acting compound fertilizer and a preparation method thereof. The fertilizer is prepared from, by weight, 185-198 parts of urea, 380-398 parts of monoammonium phosphate, 255-275 parts of potassium chloride, 70-85 parts of potassium sulfate, 0-45 parts of ammonia sulfate, 10-20 parts of zinc laurate, 10-18 parts of potassium humate, 0.5-1.5 parts of stabilizer and 20-60 parts of filling agent. By adding synergistic additives such as zinc laurate and the like, the degrading and releasing speed of the urea in soil is relieved, the migration capabilityof phosphate is improved, the untoward effect between phosphate radical and calcium, magnesium and ferrum is reduced, the rapidly available phosphorus content in the soil is increased, the utilization rate of nitrogen and phosphate is improved, the fertility of the soil is improved, the activity of urease in the soil is inhibited by a urease inhibitor, the utilization rate of the nitrogen is improved, the fertilizer has chelated zinc, complexation between the soil and the chelated zinc is conducted to improve the stability of microelement fertilizer and the utilization rate of the fertilizer,functional characteristics of the fertilizer can be improved, the nutrient absorbing of crops is improved, and the stress resistance of the crops is enhanced.

The invention relates to a lignin plastified adhesive biological carbon-base urea and a preparation method thereof, belonging to the an agricultural biomass fertilizer and a preparation technique thereof. The biological carbon-base urea is composed of pyrolytic biomass carbon, urea and alkali lignin in different weight ratios. The preparation method comprises the following steps: pulverizing crop waste, pyrolyzing to perform carbonizing treatment to obtain the pyrolytic biomass carbon, uniformly mixing the pyrolytic biomass carbon with the urea and alkali lignin, adding 100 wt% of water, heating at 60 DEG C in a sealed environment for 5-10 minutes to obtain a raw material, adding the raw material into a mold, carrying out pressure forming, and drying the formed lignin plastified adhesive biological carbon-base urea at 45 DEG C for 2 hours to obtain the finished product. The lignin plastified adhesive biological carbon-base urea has novel, reasonable an simple components; and the manufacturing technique is simple and easy to implement, and has the advantages of low production cost, high utilization ratio of fertilizer, long fertilizer effect time and low environmental pollution.

The invention relates to a sustained release fertilizer capable of reducing the content of heavy metal ions in soil and a preparation method thereof. By adopting sodium sulfide, polyvinyl alcohol, aluminum nitrate nonahydrate, magnesium nitrate hexahydrate, lignin and urea as reaction raw materials, the sustained release fertilizer with sulfur-containing hydrotalcite and lignin as carriers is prepared through a reaction. Sulfur ions in the sustained release fertilizer and the heavy metal ions can generate a water-insoluble sulfide precipitate, the effect of reducing the content of the migration-state heavy metal ions in the soil is achieved, and meanwhile a compound composed of sulfur-containing hydrotalcite and lignin has the sustained release function on urea. The dual-functional fertilizer can reduce environmental pollution caused by excessive heavy metal ions in the soil and reduce the cost of soil treatment without affecting normal agricultural production.

The invention relates to a special fertilizer for semilate rice-ratooning rice stubble rapes. The invention is characterized in that the special fertilizer for semilate rice-ratooning rice stubble rapes is composed of the following raw materials in percentage by weight: 15.0-20.0% of urea, 15.0-20.0% of urea humate, 5.0-9.0% of ammonium monoacid phosphate, 8.5-12.5% of ammonium monoacid phosphate humate, 25.0-30.0% of modified ammonium chloride, 18.0-22.0% of potassium chloride and 0.7-0.9% of granular boron. The fertilizer can promote growth of rapes before winter, prevent high seedlings from generation and enhance the continuous and balanced nutrient supply capacity, thereby finally implementing high yield and high efficiency.

The present invention discloses one kind of feed additive capable of inhibiting urease activity and its preparation process. The preparation process includes compounding wall material solution with beta-cyclodextrin, gelatin and / or sodium carboxymethyl cellulose, adding urease inhibitor as core material while stirring to form mixture liquid with solid content of 15-20 %; heating the mixture to 60-65 deg.c and homogenizing at high pressure of 35-40 MPa to form homogeneous stable material liquid; spray drying the material liquid at material feeding temperature of 60-65 deg.c, air intake temperature of 170-180 deg.c, air outlet temperature of 80-90 deg.c, nozzle diameter of 0.15 mm and nozzle pressure of 1.8x10<5> Pa. The feed additive can inhibit activity of urease, reduce exhausted ammonia and other bad smell gases, raise the producibility of animal and reduce the environmental pollution caused by livestock breeding.

The invention is applicable to the technical field of saline-alkali land improvement, and provides a method for improving the saline-alkali land by using pioneer plants. The method comprises the stepsof mixing modifiers phosphogypsum and boric acid and then scattering the mixture on the saline-alkali land subjected to tillage for even mixing to obtain primary treated soil; adding the modifiers slow release binder, humic acid, CMC (sodium carboxymethylcellulose) and zeolite powder to the primary treated soil and mixing evenly to obtain improved soil, wherein the modifier in the improved soil comprises 40-50 parts of phosphogypsum, 20-26 parts of boric acid, 10-15 parts of slow-release binder, 8-15 parts of humic acid, 2-8 parts of CMC and 1-6 parts of zeolite powder; raising the ground ofthe improved soil into a mound-like shape, ridging and building a fish scale pit on a ridge; planting the pioneer plants into the fish scale pit. Therefore, the method can increase the content of nitrogen, phosphorus and potassium in the saline-alkali soil, and reduce the pH, the conductivity and the alkalinity of the saline-alkali soil.

The invention discloses a kiwi fruit planting method capable of effectively reducing diseases. The method includes the following steps that kiwi fruit seeds and wet sand are evenly mixed and placed atthe temperature of 36-38 DEGC till the seeds sprout, and seedlings are obtained; the seedlings are sown, conventional seedling raising is conducted, diseases and insect pests are prevented in the seedling stage management period, pinching and seedling strengthening are conducted, and the seedlings are transplanted one year later; the seedlings are transplanted and planted in the last ten days ofOctober or in the last ten days of November, 200-280 kg of slow-release fertilizer is applied to each mu of planting soil, 60-80 seedlings are planted in each mu of planting soil, and the plant line spacing is (2.6-2.9) m*(3.2-3.4) m; in the rapid expansion period of fruits, 50-80 kg of phosphatic fertilizer and 30-40 kg of potash fertilizer are applied to each mu of planting soil, and 3-5 kg of expanded cottonseed cake is applied to each plant; after fruit picking, pits with the length of 1.5-2 m, the width of 30-40 cm and the depth of 45-55 cm are formed in the two sides of crowns, and 2-4 kg of organic fertilizer is applied to each plant. The method can enhance the disease resistance of the kiwi fruit plants, premature senility is prevented, growth of the kiwi fruits is promoted, the occurrence of malformed fruits is reduced, the appearance of the kiwi fruits is bright, the yield is increased, the accumulation of sugar of the kiwi fruits is increased, and the quality of the kiwi fruits is improved.

The invention relates to a slow-released fertilizer capable of decreasing the content of heavy metal ions in soil and a preparation method thereof. The slow-released fertilizer is prepared through a reaction by taking sodium sulfide, polyvinyl alcohol, aluminum nitrate nonahydrate, magnesium nitrate hexahydrate, lignin and urea as the reaction raw materials and taking sulfurated hydrotalcite and lignin as carriers. Sulfur ions in the slow-released fertilizer and the heavy metal ions can form water-insoluble sulfide precipitation, the effect of decreasing the content of migrated heavy metal ions in the soil is achieved, and meanwhile a compound formed by the sulfurated hydrotalcite and the lignin has a slow-release function on the urea. The bi-functional fertilizer does not affect normal agricultural production and can reduce environmental pollution caused by the excessive heavy metal ions in the soil, and the cost of soil treatment is reduced.

The invention relates to three diclofenac copper complexes capable of inhibiting urease activity and a preparation method of the complexes and belongs to the technical fields of complex synthesis and pharmaceutical chemistry. The three complexes all have copper ions as central ions, wherein the complex 1 is of a binuclear structure with the diclofenac and 1,3-propane diamine as the ligands; the complex 2 is of a single structure with the diclofenac and imidazole as the ligands; and the complex 3 is of a mononuclear structure with the diclofenac and 2,2'-dipyridyl as the ligands. Discovered via tests, the urease inhibiting IC50 values of the complexes 1, 2 and 3 are 0.132mu mol / L, 0.25mu mol / L and 0.448mu mol / L, respectively, and the inhibition rate to the urease activity is 50%; and in contrast, the IC50 value of the positive control N-hydroxyacetamide is 12.5mu mol / L, and therefore, the complexes are all superior to the positive control in urease activity inhibition, and are excellent urease inhibitors.

The invention discloses a 0.5% natural golden algae compound premixing feed for a pet. The 0.5% natural golden algae compound premixing feed comprises the following raw materials in weight ratio: 0.5-1.0 part of compound trace element, 0.5-1.0 part of compound vitamin, 1-2 parts of 50% choline chloride, 2-3 parts of methionine, 2-4 parts of angel yeast, 0.5-1.5 parts of selenium yeast, 50-80 parts of spirulina powder and 15-30 parts of kelp powder. According to physiological characteristics of a pet, indispensible vitamin and other nutrition ingredients for the pet are supplemented so that the nutrition of the pet is more balanced, the body immunity function of the pet is improved, and the 0.5% natural golden algae compound premixing feed is safe and convenient to use.

The invention discloses a large-particle urea coating preparation containing a urease inhibitor NBPT and a using method. The formula comprises an effective component NBPT, a dispersing agent, a wetting agent, an emulsifying agent, a film-forming agent, a thickening agent, an anti-freezing agent, marking color and water. The mass percent of each component is as follows: 5.0%-30.0% of the effective component NBPT, 3.0%-5.0% of the dispersing agent, 0.5%-5.0% of the wetting agent, 0.2%-2.0% of the emulsifying agent, 0.2%-5.0% of the film-forming agent, 0.5%-1.0% of the thickening agent, 3.0%-5.0% of the anti-freezing agent, a proper amount of the marking color and the balance of the water. According to the invention, the NBPT can be well dispersed; The added preferable additive can obviously improve the effectiveness of the NBPT, so that the dosage is reduced, and the stability of the NBPT is improved; The product can be directly coated on the surface of the large-particle urea by high-pressure spraying. When the product is scientifically applied to soil, the soil urease activity can be effectively inhibited, slow and controlled release of nitrogen is realized, the nitrogen fertilizer utilization rate is increased, the nitrogen fertilizer consumption is reduced, the crop yield is increased, and the environmental pollution risk is effectively reduced.

The invention discloses a naproxen copper complex with a function of inhibiting the urease activity and a preparing method thereof, and belongs to the technical field of complex synthesis and medicinal chemistry. According to the naproxen copper complex, naproxen and 1,3-propane diamine serve as ligands, a copper ion serves as a center ion, and through a solvent evaporation method, a mononuclear-structure naproxen copper complex is prepared. The naproxen copper complex has the good biological activity, it discovers after detection that IC50 values of the naproxen copper complex and positive control medicine acetohydroxamic acid (N-glycolamide) are 1.69 micromole / L and 6.26 micromole / L respectively with respect to urease inhibition, it indicates that an effect of the complex for inhibitingthe urease activity is better than an effect of acetohydroxamic acid, the inhibition ratio of the complex for the urease activity is 72.6%, and the naproxen copper complex is a good urease inhibitor.

A preparation method of a shell powder organic fertilizer biological conditioner comprises the following steps: A, preparing shell powder: cleaning shells with clear water, drying, soaking the cleanedand dried shells in a sodium hydroxide solution with the mass concentration of 0.2% for 40 minutes, cleaning again, and drying for later use; and then crushing; B, preparing an organic fertilizer: mixing pig manure compost with an amino acid organic fertilizer according to a weight ratio of 1: 1; and C, mixing: uniformly stirring and mixing the shell coarse micro powder obtained in the step A andthe organic fertilizer obtained in the step B according to a weight ratio of 1: 2 to prepare the shell powder organic fertilizer biological conditioner. The shell powder is combined with the organicfertilizer to replace an industrial fertilizer, the soil structure and physical properties can be improved, the water and fertilizer retention capacity of soil is improved, meanwhile, damaged soil microbial populations can be recovered, and the purposes of high yield, high quality, high efficiency and continuous land utilization of vegetable production are achieved.

The invention relates to a slow-release fertilizer capable of reducing the content of heavy metal ions in soil and a preparation method thereof. The slow-release fertilizer adopts sodium sulfide, polyvinyl alcohol, aluminum nitrate nonahydrate, magnesium nitrate hexahydrate, lignin and urea as reaction raw materials , a slow-release fertilizer with sulfur-containing hydrotalcite and lignin as carriers was prepared. The sulfur ions in the slow-release fertilizer can form water-insoluble sulfide precipitation with heavy metal ions, so as to reduce the content of migratory heavy metal ions in the soil. release function. The dual-function fertilizer can reduce the environmental pollution caused by excessive heavy metal ions in the soil and reduce the cost of soil treatment while not affecting normal agricultural production.

The invention discloses a triazole feed additive as well as a preparation method and application thereof, and belongs to the technical field of feed additive synthesis. According to the technical scheme, the triazole feed additive molecule has the structure, R1 and R2 are halogen atoms or methoxyl and other substitutions, benzyl bromide compounds are used as raw materials, the compound molecule containing the triazole structure is simply, conveniently and efficiently prepared, and the compound molecule can inhibit the activity of immune protein IDO1. The T cell level is improved, so that diseases such as animal inflammation can be relieved, the activity of urease can be inhibited, and the compound can be used as a feed additive of animals.