430results about How to "Extend the fertilizer period" patented technology

The present invention relates to a coating composite for making coated granular fertilizer and its production method, and the fertilizer made up by using said coating composite. The coating composite is formed from coating agent, solidfying agent, nitrogen synergist, inorganic acid or organic acid, surfactant and adjuvant. As compared with non-coated fertilizer the nitrogen utilization rate of fertilizer produced by adopting said invention can be raised by 6%-10%, the fertilizer can be saved by 15-45%, and its fertilizer efficiency time can be obviously prolonged, and can be reached to 60-120 days.

The invention relates to a fertilizer and soil conditioner, wherein the compound fertilizer contains a slow-release fertilizer additive adjustable based on soil and plant requirement, which comprises compound microorganism - organic carrier 2-50%, inorganic carrier 1-30%, ureacondensate 1-50%, primary nutrient 1-60%, trace element 1-10%, and inorganic soil conditioner 1-50%.

The invention relates to a nitrogen fertilizer, in particular to a synergistic slow-releasing nitrogen fertilizer and a preparation method thereof. The fertilizer comprises: urea nitrogen fertilizer, biochemical inhibitors and a synergist, wherein, the weight portion ratio of the urea nitrogen fertilizer to the biochemical inhibitors to the synergist is equal to 1:0.001 to 0.1:0.0005 to 1; the biochemical inhibitors are a nitrification inhibitor and a urease inhibitor and the synergist is poly (aspartic acid), wherein, the weight portion ratio between the urease inhibitor and the nitrification inhibitor is equal to 0.5 to 2:0.5 to 2. The preparation method is as follows: during the operation process of the nitrogen fertilizer, the biochemical inhibitor and the synergist are added into the fertilizer under the molten state of the fertilizer. The synergistic nitrogen fertilizer of the invention is suitable for various plants and soils. The fertilizer has notable disease-resistant, drought-resistant and lodging resistant effects on crops after being applied in soils, can effectively improve nutrients reserving power of soils and has certain effect on succession crops. Gain production can be increased by 8% to 30%, vegetable production can be increased by 14% to 60% and cash crop production can be increased by more than 30% by using the synergistic slow-releasing nitrogen fertilizer.

The invention discloses an organosilicon foliage fertilizer and making method, which is the leach of charred rice husk with water without polluting and side effect, wherein the foliage fertilizer is made of nitrogen, phosphine, potassium fertilizer, trace fertilizer, humic acid, plant growth modifier dissolved in the water with organosilicon fertilizer. The invention reaches effective utility due to kinds of nutritious element adsorbed by plant, which improves the crop production for forage crop, bean culture, vegetable and fruit tree.

The invention relates to nitrogen fertilizers, in particular to a multi-functional slow-release urea fertilizer and a preparation method. The fertilizer comprises urea, a biochemical inhibitor, synergist, water-soluble salt ions of secondary and trace elements necessary for plants and / or beneficial elements for plant growth. By weight percentage, the weight percentage of the urea to the biochemical inhibitor to the synergist is equal to 1: 0.001-0.1: 0.0005-0.05, the salt ions of the secondary and trace elements necessary for the plants comprises one kind or a plurality of kinds of calcium, magnesium, sulfur, ferrum, copper, zinc, manganese, boron, molybdenum and chlorine, the weight percentage of the urea to all the secondary and trace elements necessary for the plants is equal to 1: 0-0.1: 0-0.1: 0-0.06: 0.001-0.03: 0.001-0.01: 0.001-0.01: 0.001-0.008: 0.001-0.01: 0.001-0.005: 0-0.006, the beneficial elements for the plant growth comprise silicon and selenium, and the weight percentage of the urea to all beneficial elements for the plant growth is equal to 1: 0-0.1: 0.001-0.08. The multi-functional slow-release urea fertilizer can promote growth of root systems, invigorate plants, enhance disease resistance, drought resistance and lodging resistance, and stimulate prematurity.

The invention relates to a synergistic fertilizer, in particular to a green and environmental protection synergistic slow-releasing nitrogen fertilizer which is mixed in ammonium nitrogen fertilizers or urea, and a preparation method thereof. The fertilizer constituents are as follows: nitrogen fertilizer, a biochemical inhibitor and a synergist, wherein, the weight portion ratio of the nitrogen fertilizer to the biochemical inhibitor to the synergist is equal to 1:0.005 to 0.1:0.0005 to 1; the biochemical inhibitor is a nitrification inhibitor, and the synergist is poly (aspartic acid). The preparation method is as follows: during the operation process of the nitrogen fertilizer, the biochemical inhibitor and the synergist are added into the fertilizer under the molten state of the fertilizer. The synergistic nitrogen fertilizer of the invention is suitable for various plants and soils. The fertilizer has notable disease-resistant, drought-resistant and lodging resistant effects on crops after being applied in soils, can effectively improve nutrients reserving power of soils and has certain effect on succession crops. Gain production can be increased by 8% to 30%, vegetable production can be increased by 14% to 60% and cash crop production can be increased by more than 30% by using the synergistic slow-releasing nitrogen fertilizer.

The invention relates to a long-acting special fertilizer for oil-tea camellia and a preparation method thereof. The long-acting special fertilizer is characterized in that: the fertilizer is prepared from the following raw materials in percentage by weight: 31.3 to 42.9 percent of nitrogen fertilizer, 8.5 to 8.7 percent of phosphate fertilizer, 26.7 to 32.0 percent of potassic fertilizer, 2.6 to 5.1 percent of medium-micro fertilizer, 10 to 15 percent of organic additive and 4 to 19.4 percent of controlled release additive. The special fertilizer for the oil-tea camellia is produced according to the absorption characteristics of the oil-tea camellia on N, P and K, is suitable for the absorption of N, P and K by the oil-tea camellia, has reasonable proportion and long fertilizer efficiency period, can be used as base fertilizer and additional fertilizer, has high nutrient utilization rate, and is safe and environment-friendly; the special fertilizer can remarkably improve the utilization rate of nitrogen, the increasing range is over 8 percent, and the fertilizer efficiency period is as long as 90 to 150 days; and under the same nutrient condition, the special fertilizer can increase the yield of oil-tea camellia fruits by about 10 percent, can remarkably promote the quality of the oil-tea camellia fruits, and promotes the oil content by over 0.6 percent.

The invention belongs to the technical field of fertilizers and specifically relates to a water-retention and slow-release fertilizer. The water-retention and slow-release fertilizer comprises the following raw materials in parts by weight: 70-80 parts of coated slow-release fertilizer or low-solubility slow-release fertilizer, 15-20 parts of water retention agent, 1-2 parts of biological bacteria, 5-10 parts of humic acid and 5-15 parts of soil conditioner. The prepared water-retention and slow-release fertilizer disclosed by the invention has the advantages of low cost and simplicity and convenience in application, and can adjust the water absorbency of the fertilizer according to different crops, soil, climate and other conditions and be widely applied to grain crops, cash crops, horticultural plants and the like. The water-retention and slow-release fertilizer disclosed by the invention has long effective period, and can greatly reduce the loss of the fertilizer caused by volatilization and eluviation, enable the limited fertilizer and water to be fully absorbed and utilized by the plants, achieve the integration of the water and the fertilizer and improve the soil. Through the application of the water-retention and slow-release fertilizer, the irrigation cost of farmland can be reduced and the high-efficient water conservation purpose can be achieved. The water-retention and slow-release fertilizer disclosed by the invention can greatly improve the utilization rate of nutrients and effectively control the pollution of the crops and an environment caused by the application of the fertilizer.

The invention relates to an organic / inorganic salt and alkali resistant long-acting corn fertilizer, which mainly contains the following active ingredients in percentage by weight: 10 to 28 percent of nitrogen, 5 to 20 percent of phosphorus, 5 to 18 percent of potassium, 10 to 25 percent of sulfur, 5 to 10 percent of amino acid, 1 to 10 percent of humic acid, 1 to 5 percent of medium trace elements, 1 to 5 percent of sustained release agent and the balance of adhensive. A nitrogen fertilizer may be at least one of urea, ammonium chloride and ammonium sulfate. A phosphatic fertilizer may be at least one of calcium superphosphate, monoammonium phosphate, diammonium phosphate and double superphosphate. A potash fertilizer may be at least one of potassium sulfate and potassium chloride. The amino acid may be an amino acid organic fertilizer or corn processing leftovers. The medium trace elements comprise 0 to 1.5 percent of zinc, 0 to 3 percent of magnesium, 0 to 1 percent of iron, 0 to 1 percent of silicon, 0 to 0.5 percent of calcium and 0 to 0.5 percent of molybdenum. The adhesive is clayey soil. The fertilizer of the invention is a composite fertilizer combining chemical fertilizers and organic fertilizers. The fertilizer of the invention contains all nutrients, combines organic and inorganic matters, acts for a long term after being applied once and can improve soil of saline and alkaline lands and greatly improve corn yield.

The invention relates to a method for preparing polyurethane-polyurea coated fertilizer, comprising the following steps: dehydrating polyether polyol to obtain dehydrated polyether polyol, adding polyisocyanate to the dehydrated polyether according to the molar ratio of NCO to OH of 2-5, heating the temperature of the mixture of the dehydrated polyether and the polyisocyanate to 70-90 DEG C, making the mixture of the dehydrated polyether and the polyisocyanate react until the mass of NCO being 5-9 percent of the mass of the product of reaction, defoaming the product of reaction in vacuum to obtain -NCO-ended polyurethane prepolymer, filling fertilizer in a spray dryer, heating the fertilizer to 60 DEG C, mixing the polyurethane prepolymer with amine chain extender according to the mass ratio of 7-8:1 to obtain spraying liquid by controlling the fan frequency at 45 Hz, the nozzle atomization air pressure at 0.7-1.2 MPa, the inlet air temperature at 20-80 DEG C and the spray rate at 0.4-0.6 Kg / h, spraying the spraying liquid whose mass is 7-10 percent of the mass of the fertilizer on to the fertilizer, and curing the coating film to obtain the polyurethane-polyurea coated fertilizer.

The present invention relates to long-acting compound fertilizer, and is especially a kind of long-acting compound humic acid fertilizer. The long-acting compound humic acid fertilizer consists of composite of humic acid, urea and formaldehyde in 25-40 wt% and soluble nitrogen fertilizer, phosphate fertilizer and potash fertilizer 60-75 wt%. The composite of composite of humic acid, urea and formaldehyde consists of turf, urea, ammonium and formaldehyde solution; and the soluble nitrogen fertilizer, phosphate fertilizer and potash fertilizer are in the weight ratio of 12-25 to 30-40 to 10-20. The product is suitable for various soil, especially for growing green vegetable, flower and fruit tree.

The invention relates to a preparation method and application for efficient urea and a relative, and the preparation method and application is formed by the polymerization amino acid or the salt with a weight proportion of 0.01 to 2.0, urease inhibitor with weight proportion of 0.01 to 0.2, the nitrification inhibitor with weight proportion of 0.01 to 0.6, and the common urea with weight proportion of 97.2 to 99.97. The efficient urea is produced by adding the mixture solution of polymerization amino acid or the salt, the urease inhibitor and the nitrification inhibitor into the common urea at fusing state, and then mixing and granulating. The invention provides the application of the efficient urea in agriculture; for the field crop, the economic crop, the fruit and vegetable, and the flowers, the efficient urea can promote to comprehensively regulate the physiological and biochemical effect inside the plant so as to sufficiently excite the plant endogenous somatotropin and accelerate the nutrition producing, as well as improving the utilization and absorption of the urea, increasing the utilization rate by 20 percent to 60 percent. By the bonding effect of the polymerization amino acid or the salt molecule chemical bond and the effect of the urease inhibitor and the nitrification inhibitor, the invention slowly releases the urea in the soil, and increases the releasing time from 50 days up to around 120 days.

The invention relates to a nitrogen synergistic fertilizer, in particular to a synergistic slow-releasing urea fertilizers and a preparation method thereof. The fertilizer constituents are as follows: urea nitrogen fertilizer, a biochemical inhibitor and a synergist, wherein, the weight portion ratio of the urea nitrogen fertilizer to the biochemical inhibitor to the synergist is equal to 1:0.001 to 0.1:0.0005 to 1; the biochemical inhibitor is a urease inhibitor, and the synergist is poly (aspartic acid). The preparation method is as follows: during the operation process of the nitrogen fertilizer, the biochemical inhibitor and the synergist are added into the fertilizer under the molten state of the fertilizer. The synergistic urea fertilizer of the invention is suitable for various plants and soils. The fertilizer has notable disease-resistant, drought-resistant and lodging resistant effects on crops after being applied in soils, can effectively improve nutrients reserving power of soils and has certain effect on succession crops. Gain production can be increased by 8% to 30%, vegetable production can be increased by 14% to 60% and cash crop production can be increased by more than 30% by using the synergistic slow-releasing urea fertilizer.

The invention relates to the nitrogen manure, in particular to the slow-release and long-effect urea fertilizer coating a layer of biochemical inhibitor on the urea surface and the preparation process. The fertilizer components are the urea, the biochemical inhibitor, the bond and the organic solvent. The process is that: the levitated solution mixed with the biochemical inhibitor, the bond and the organic solvent is sprayed and coated on the surface of the molding urea granule under the fluidized state through a fluidized bed to gain the slow-release urea fertilizer. The fertilizer of the invention makes full play of the functions and effects of two biochemical inhibitors, makes the fertilizer effect period prolonged obviously and realizes that once basal nitrogen fertilizer application can meet the requirement of whole growing seasons on the nitrogen. The agricultural production saves labor and time with low production cost and friendly environment. For the secondary processing of the urea, the preparation process of the invention has simple operation and easy realization and can carry out industrial production on a large scale.

The invention discloses a rapid long-acting humic acid multivariate fertilizer and a production method thereof. A long-acting part of the rapid long-acting humic acid multivariate fertilizer comprises raw materials of, by weight, 15-20% of urea, 5-10% of ammonium sulfate, 5-10% of ammonium chloride, 5-15% of monoammonium phosphate, 8-15% of calcium magnesium phosphate, 10-20% of potassium chloride or potassium sulfate, 10-15% of waste residues left from iron selection of pyrite smelting slag, 25-50% of humic acid, 5-25% of phosphogypsum and 5-12% of dolomite powder; A rapid part comprises rawmaterials of, by weight, humic acid urea prepared from 20-30% of urea and 40-50% of instant humic acid, 5-15% of monoammonium phosphate, 10-20% of potassium chloride or potassium sulfate, 0.5-1% of borax, 1-3% of zinc sulfate, 2-5% of magnesium sulfate, 0.2-1% of copper sulfate and 0.01-0.05% of ammonium molybdate.

The invention discloses an efficient slow-release urea. The efficient slow-release urea is prepared by coating urea by utilizing a coating slow-release solution and drying and solidifying the coated urea, wherein the coating slow-release solution consists of the following components in percentage by mass: 1 to 5 percent of gamma-polyglutamic acid, 1 to 5 percent of nitration inhibitor, 0.5 to 5 percent of adhesive, 0.05 to 2 percent of surfactant and the balance of water; and the pH of the efficient slow-release urea is 5.5 to 6.5. The invention also discloses the preparation method of the efficient slow-release urea. The gamma-polyglutamic acid in the efficient slow-release urea has the effects of coating and chelating the urea and the nitration inhibitor, so that separation of the nitration inhibitor and a nitrogen fertilizer is reduced, leaching and runoff losses of nitrate nitrogen are reduced, one-time fertilization can be realized, top dressing is not required, the utilization rate of the fertilizer can be improved by over 15 percent, and the yield of the crops is increased by 10 to 30 percent.

The invention discloses a sustained oxygen release fertilizer which adopts a mixture comprising calcium superoxide, sodium bentonite and polyvinyl formal. The mass ratio of sodium bentonite to calcium superoxide is 12 to 5, and the mass of the polyvinyl formal is 15 percent of the gross mass of the sustained oxygen release. The sustained oxygen release fertilizer discusses the oxygen release feature and the pH value variation in the condition of aqueous medium. Experimental results show that compared with applying calcium superoxide powder only, the sustained oxygen release fertilizer has the characteristics that the fertilizer effect period is long, the applying method is simple, the production technology is simple, the source of material selected is wide, the material is environmentally friendly, and the sustained oxygen release fertilizer can be widely applied.

The invention discloses a selenium sustained-release edible fungus additive for selenium-rich culturing of edible fungus. The selenium sustained-release edible fungus additive is characterized by comprising the following components in parts by weight: 1-20 parts of selenium source, 950-1000 parts of attapulgite clay or modified attapulgite clay and 5-40 parts of beta-cyclodextrin, wherein the modified attapulgite clay is one-dimensional nano-state attapulgite clay which is modified by hydrogen type ion source (H<+>) irradiation. The composition achieves a stable release condition after 2-3 hours in a solution state, the selenium concentration in the solution state can achieve 40-60% of the original selenium concentration in the selenium sustained-release additive, and the stable release condition can be sustained for 90-120 days.

The invention relates to a long-acting slow release fertilizer special for tomatoes and a preparation method thereof. The long-acting slow release fertilizer special for tomatoes disclosed by the invention comprises the following components in parts by mass: 230 parts of nitrogen fertilizer active ingredients, 120 parts of phosphorus fertilizer active ingredients, 10 parts of potassium fertilizeractive ingredients, 92-100 parts of bentonite and 7-9 parts of a long-acting compound fertilizer additive, wherein the bentonite contains 85-90 percent by mass of montmorillonite; and the long-actingcompound fertilizer additive comprises the following components in parts by mass: 2-8 parts of quinhydrone, 3-25 parts of dicyandiamide, 0.1-0.8 part of complex rare earth and 70-95 parts of zeolite powder. The invention further provides a preparation method of the long-acting slow release fertilizer special for tomatoes. By applying the long-acting slow release fertilizer special for tomatoes disclosed by the invention, crop yield is increased by over 20 percent, and quality is enhanced remarkably. Nitrogen utilization ratio and phosphorus utilization ratio are increased greatly; and moreover, the long-acting slow release fertilizer special for tomatoes disclosed by the invention is safe for human beings, livestock and crops, and residues in soil and crops are avoided.

The invention provides a method for planting selenium-enriched rice at a high yield. The method comprises the following steps: 1), preprocessing seeds; 2) plowing the soil and fertilizing; 3) culturing seedlings; 4) transplanting the seedlings; 5) additionally fertilizing; 6) harvesting. According to the method provided by the invention, a seed processing step is additionally adopted to sterilize and disinfect the seeds, and meanwhile, the seeds are soaked with sodium selenite to increase the selenium content in rice seeds. A long-acting selenium-enriched coated controlled release compound fertilizer applied for rice planting comprises a core fertilizer and a coated layer coating the surface of the core fertilizer. The core fertilizer adopts sulphur coated urea to form a three-layer structure, such that the controlled release efficiency is remarkable, and the fertilizer efficiency is long. Only a little amount of fertilizer needs to be applied additionally after planting to save time and labor. Both the core fertilizer and the coated layer are prepared from organic degradable materials, such that the fertilizer efficiency can be kept in the degradation process. The core fertilizer is rich in microelements, thus promotes the nutrimental value of rice, and the soil quality can also be improved on the premise of degradability. The ingredients of the fertilizer are friendly to soil, low in production cost, beneficial for market promotion and good in economic benefits.

the invention discloses an urea synergist and a preparation method thereof. The urea synergist comprises following raw materials, by weight, 150 to 200 parts of ammonium sulfate, 120 to 160 parts of potassium dihydrogen phosphate, 10 to 15 parts of ammonium molybdate, 25 to 35 parts of boric acid, 5 to 10 parts of cobaltous chloride, 5 to 10 parts of nickel sulfate, 20 to 30 parts of ethylene diamine tetraacetic acid, 30 to 40 parts of zinc sulfate, 20 to 30 parts of enteromorpha dried powder, 10 to 15 parts of potassium humate fulvate acid, 15 to 25 parts of vulcanic ash, 10 to 15 parts of tea seed cake powder, 50 to 100 parts of modified zeolite powder, and 3 to 6 parts of compound sodium nitrophenolate. The urea synergist is capable of increasing fertilizer efficiency and nitrogen use efficiency of urea, prolonging fertilizer validity period, promoting crop rapid growth, increasing drought resistance and disease resistance, increasing yield significantly, improving crop quality, reducing application amount, reducing additional fertilizers, reducing labor and fertilizer amount, reducing planting cost, and increasing economic benefits of crops.

The invention provides a method for preparing mushroom culturing material. The mushroom culturing material comprises the following compositions by weight percentage: 35 to 55 percent of cotton seed hulls, 25 to 45 percent of rice bran, 10 to 16 percent of bran, 1.5 to 2 percent of bean cakes, 0.5 to 1 percent of lees, 0.5 to 1 percent of peanut shells, 0.5 to 1 percent of gypsum, 1.5 to 2 percent of sorghum husks, 0.1 to 0.3 percent of Sanmate, 0.1 to 0.3 percent of nitrogen phospho potash complex fertilizer, 0.1 to 0.3 percent of oxygenation powder, and 0.5 to 0.8 percent of corn meal. The method comprises the following steps: combining the cotton seed hulls, the rice bran, the bran and the bean cakes together according to the proportion; pouring the mixture into a crushing mill to be crushed into particles with about 120 meshes; adding the lees, the peanut shells, the gypsum, the sorghum husks, the Sanmate, the nitrogen phsopho potash complex fertilizer, the oxygenation powder and the corn meal into the particles according to the proportion after the particles are taken out; and pouring the mixture into a mixer to be mixed for 60 minutes and taken out, adding water according to the proportion of 1:1.3-1:1.5 into the mixture to be evenly piled and fermented for 6 hours to produce a qualified culturing material.

The invention relates to a pant rhizosphere friendship fertilizer which uses divalent metal ammonium phosphate sylvine wrapped fertilizer and / or slightly soluble nitrogen-containing compound buffer fertilizer and water soluble potash fertilizer, root accelerator, root inducer, fertilizer with micro element and additive to make the buffer-control fertilizer.

The invention relates to a preparing method of a walnut green husk dreg organic fertilizer. The preparing method comprises the steps of preparing the walnut green husk dreg organic fertilizer by adopting walnut green husk dregs, edible fungus dregs and plant ash as main ingredients, carrying out inoculation of a microorganism strain for fermentation and the like. The walnut green husk dreg organic fertilizer contains no poultry and livestock manure, avoids side effects of seeding blight, root blight, diseases and pests and the like caused by applying excrement and urine inorganic fertilizer of livestock and poultry, reasonably and effectively solves the problem of pollution of the walnut green husk and the edible fungus dregs to environment, and turns waste into wealth; the walnut green husk dreg organic fertilizer further has high potassium content, resistance to diseases and pests of fruit trees is strengthened after the use of the fertilizer, the yield of the fruit trees is increased, the fruit quality is sharply improved, and economic benefits are significantly increased.

The invention discloses a special lecithin-coated slow release fertilizer for cotton. The slow release fertilizer is prepared from the following raw materials: urea, monoammonium phosphate, potassium chloride, ammonium chloride, superphosphate, zinc sulfate, borax, lecithin and amidinothiourea; and the production method of the slow release fertilizer comprises the steps of: firstly, granulating monoammonium phosphate, potassium chloride, ammonium chloride, superphosphate, zinc sulfate, borax and most part of urea (used after fusion) to form inner-layer particles; then spraying mixture of the rest of urea (used after fusion) and amidinothiourea on the inner-layer particles; and coating the outer layer with lecithin. As a sustained-release material (lecithin) and a controlled-release material which is amidinothiourea serving as a urease inhibitor and a nitrification inhibitor are selected and used in the slow release fertilizer, the effective period of a nitrogenous fertilizer is prolonged to 121 days from about 30 days, the effective period of the nitrogenous fertilizer is prolonged greatly, the utilization rate of the nitrogenous fertilizer for cotton is improved greatly, the utilization rate of the nitrogenous fertilizer in a cotton season is improved by 37%, the fixation and the loss of a phosphorus potassium fertilizer are reduced, and the utilization rate of the phosphorus potassium fertilizer in a cotton season is improved by 13% and 5% respectively.

The invention relates to a high-activity nitrification inhibition type multifunction fertilizer synergist and is applicable to the field of agriculture and forestry. The high-activity nitrification inhibition type multifunction fertilizer synergist is composed of following raw materials of, by weight, 3-35% of vitamin C, 3-35% of N-acyl sodium glutamate, 3-35% of 3,4-dimethylpyrazole phosphate (DMPP), 3-35% of farm-oriented rare earth, 5-35% of fulvic acid, 0.5-2.5% of compound sodium nitrophenolate, 15-45% of vermiculite and 15-45% of medical stones. The raw materials are smashed, screened by a 30-100 mesh screen, then stirred and mixed according to a certain ratio to obtain the fertilizer synergist. The fertilizer synergist is applicable to slow-acting nitrogen fertilizers or composite nitrogen fertilizers which use ammonium nitrogen fertilizers or urea as raw materials and is capable of being matched with the ammonium nitrogen fertilizers or the urea to be simultaneously applied to various types of soil, the fertilizer efficiency period of nitrogen fertilizers with the added multifunction fertilizer synergist can be prolonged to 90-110 days, abilities of drought resistance and disease resistance can be obviously improved, soil microorganism activities and crop root system activities can be stimulated, effectiveness and utilization efficiencies of soil fertilizers can be improved, and residual effects on crops are obvious.

The invention discloses slow release urea containing gamma-polyglutamic acid and a urease inhibitor. The slow release urea is obtained by spraying a coated slow release solution onto the outer surface of urea particles and drying, wherein the coated slow release solution contains gamma-polyglutamic acid and a urease inhibitor. The invention further discloses a preparation method of the slow release urea. The gamma-polyglutamic acid and the urease inhibitor in the slow release urea have synergic actions, and the gamma-polyglutamic acid can form a layer of protective film on the surfaces of a fertilizer and the urease inhibitor, so that the utilization ratio of the fertilizer is increased, and environmental pollution is lowered.

The invention provides a nitrogen fertilizer synergist. Every 100 parts of the nitrogen fertilizer synergist is prepared from, by weight, 94-98 parts of biochar, 1.0-3 parts of a urease inhibitor and 1.0-3 parts of a nitrification inhibitor. The raw materials are put into a stirrer, full stirring and even mixing are performed, the mixed materials are subpackaged in bags, and then the nitrogen fertilizer synergist is obtained. The nitrogen fertilizer synergist is suitable for producing long-lasting nitrogen fertilizer by taking urea or ammonium nitrogen fertilizer as the raw materials and can be applied to various soil along with the urea or ammonium nitrogen fertilizer, effectively prolong the fertilizer efficiency period of the urea or ammonium nitrogen fertilizer to 100-120 days, significantly increase the utilization rate of fertilizer nutrients, improve the soil, condition plant growth, increase the crop yield and improve the crop quality.

The invention discloses a chitosan and sulfur coated special sustained-release fertilizer for wheat and a preparation method thereof, which belong to the technical field of controlled-release fertilizer. The fertilizer is based on the nutrient absorption law of wheat. The fertilizer is obtained by preparing 5-percent chitosan coated urea, 6-percent chitosan coated urine, sulfur coated urine, monoammonium phosphate, potassium chloride, humic acid and ethylene diamine tetraacetic acid (EDTA) chelate iron according to a specified mixing ratio, fully mixing, weighing and packaging. The special controlled-release fertilizer has the advantages of high nutrient utilization rate, environment pollution reduction due to degradability of the coating of the fertilizer, low price, consistence between nutrient release and wheat absorption law, labor cost conservation and improvement on quality of wheat.

The invention relates to a preparation method for Chinese herbal medicament nutrient fertilizer containing honeysuckle. The nutrient fertilizer comprises 2,000 g of dry chicken manure, 1,150 g of dry sheep manure, 1,300 g of dry dairy manure, 3,000 g of dry rabbit manure, 3,000g of bean cake powder, 1,000 g of bone meal, 6,000 g of corncob, 2,000 g of beanstalk, 2,000 g of compound fertilizer, 1,000 g of urea, 2,000 g of phosphate fertilizer, 600 g of glucose powder, 300 g of sanmate powder, 1,000 g of panaplate powder and 2,000 g of phenolic resin powder. The preparation method comprises the following steps: taking the powder agents according to the proportion and combining all powder agents together; putting the mixture in a stirrer to stir for 70 minutes; taking out and putting the mixture in a pulverizer to crush the mixture into particles about 60-mesh; putting the particles in the stirrer again to stir for 160 minutes; taking all particles out and pouring all particles in a fermenting tank; adding 1:1.5 human excrement solution to stir up and down and piling up the evenly stirred mixture; and finally, patting the mixture and compacting and tightly covering the mixture by a plastic cloth to carry out fermentation for 26 hours.