144 results about "Nitrohumic acid" patented technology

The invention discloses a plant growth regulating composition and its application. The composition comprises the following components: A) natural abscisic acid, B) gibberellic acid (GA3, or of GA4 +7), and C) an existing plant growth regulator. The existing plant growth regulator is selected from one or more than two of 6-BA (6-benzylaminopurine), thidiazuron, brassinolide, sodium nitrophenolate, potassium nitrophenolate, chlormequat chloride, triacontanol, naphthlcetic acid and its salt, indolebutyric acid and its salt, indoleacetic acid and its salt, ethephon, diethyl aminoethyl hexanoate, paclobutrazol, uniconazole, fulvic acid, Mepiquat chloride, nitrohumic acid, jasmonic acid and triapenthenol. Specifically, the components A), B) and C) are in a weight ratio of 1:0.001-500:0.001-500. The S-ABA (S-abscisic acid) added in the invention can expand the prevention and treatment objects, reduce or prevent phytotoxicity, reduce dosage, and lower the use cost.

The invention discloses a dedicated fertilizer for tobacco, and relates to a fertilizer. The dedicated fertilizer comprises the following raw materials: 100 kg of ammonium sulfate, 31 kg of urea, 200 kg of nitric phosphate, 89 kg of di-ammonium phosphate, 100 kg of calcium superphosphate, 10 kg of calcium magnesium phosphate fertilizer, 230 kg of potassium sulfate, 15 kg of borax, 21 kg of amino acid chelated zinc, manganese, copper, iron and tombarthite, 100 kg of nitrohumic acid, 40 kg of magnesium sulfate heptahydrate, 28 kg of a biological agent, 11 kg of a synergistic agent and 28 kg of a soil conditioner. Compared with the prior art, the dedicated fertilizer has the advantages that tobacco yield can be improved by 36 percent; the agronomic character and quality can be improved; the tobacco growing period can be shortened; the environment can be protected; the plant stress resistance can be improved; the prospects in improving economic benefits of tobacco growers and the like are wide; the smoking health of a human body is guaranteed.

The invention discloses a method for preparing a biochar-base fertilizer from cotton straws, which comprises the following steps: 1. preparing cotton straw biochar from cotton straws; 2. pulverizing gypsum, bentonite and cotton straw biochar, respectively passing the gypsum and bentonite through a 100-mesh screen, and passing the cotton straw biochar through a 40-mesh screen; 3. mixing 16-19 parts of weight of ammonium phosphate, 7-9 parts of weight of urea, 7-9 parts of weight of potassium sulfate, 1-2 parts of weight of zinc sulfate, 1-2 parts of weight of boric acid, 7-9 parts of weight of nitrohumic acid, 30-40 parts of weight of cotton straw biochar, 7-12 parts of weight of gypsum and 7-12 parts of weight of bentonite together, and stirring uniformly to obtain a fertilizer mixture; 4. carrying out primary granulation on the fertilizer mixture with a rotating drum granulator, and carrying out reshaping granulation with a disk granulator to obtain fertilizer granules; and 5. drying the fertilizer granules with a drying machine to obtain the biochar-base fertilizer.

The invention provides a special fertilizer for rice. The special fertilizer is prepared from the following raw materials: nitrogen-phosphorus-potassium fertilizer, animal amino acid, nitrohumic acid, organic trace elements, inorganic trace elements, medium elements, biomass ash and lime powder, wherein the ratio of nitrogen fertilizer, phosphorus fertilizer to potassium fertilizer in the nitrogen-phosphorus-potassium fertilizer is (15-20):(8-12):(10-15); and the organic trace elements include sucrose complex copper, sucrose complex iron, sucrose complex zinc, sucrose complex manganese, sucrose complex magnesium, silicon humate fertilizer, sodium humate, magnesium humate, zinc humate and urea iron humate. With high nitrogen content and high-quality humic acid, the special fertilizer for rice provided by the invention improves the soil fertility, promotes quick growth of rice plants, increases the utilization rate of fertilizer, reduces fertilizer loss and obviously increases the rice yield.

The invention discloses a special fertilizer used for assisting yield increase of paddy rice. The special fertilizer comprises the following raw materials: a rapeseed cake, fermented pig manure, urea, ammonium sulfate, calcium nitrate, diammonium phosphate, potassium chloride, magnesium sulfate, zinc sulfate, sodium selenate, ammonium molybdate, copper sulphate and a soil conditioner. The soil conditioner comprises the following components: bentonite, perlite, citric acid, oxalic acid, nitrohumic acid, a phosphate-dissolving bacterium, dicyandiamide, N-butylthiophosphoryl triamide, polyethylene glycol and acrylamide. The special fertilizer used for assisting yield increase of paddy rice in the invention has a scientific formula and reasonable nutrients; and when applied in plantation of paddy rice, the special fertilizer can improve the utilization rate of fertilizers, resist lodging and insect attack, increase the output of paddy rice, improve the quality of paddy rice, enhance physical and chemical properties of soil and prevent soil hardening.

The invention relates to a traditional Chinese medicinal residue fermentation composite fertilizer and a preparation method thereof. The composite fertilizer is prepared through using the following raw materials, by weight, 1-2 parts of nitrohumic acid, 300-350 parts of traditional Chinese medicinal residue, 20-25 parts of meerschaum, 12-15 parts of vermiculite, 3-4 parts of diatomite, 10-12 parts of iron ore slag, 20-24 parts of fly ash, 20-24 parts of weathered coal, 1-2 parts of nanocarbon, 50-60 parts of bean dregs, 2-3 parts of brown sugar, 3-4 parts of bamboo charcoal, 12-14 parts of urea, 6-8 parts of potassium chloride, 10-12 parts of potassium dihydrogen phosphate, 3-4 parts of a multi-element slow release fertilizer and 1-2 parts of an EM microbial inoculums. The composite fertilizer can activate soil, increase the fertilizer efficiency and assist the release of latent nutrients in soil, allows the conversion rate of N in the soil to reach 5-10% and allows the conversion rates of P and K in the soil to respectively reach above 10%. The average yield each 666.7m<2> of crops fertilized with the composite fertilizer is 15-20% higher than that of crops fertilized with routine fertilizers under an equivalent application condition.

The invention discloses a rice fertilizer. The rice fertilizer comprises, by weight, 10-15 parts of urea, 5-10 parts of diammonium hydrogen phosphate, 5-8 parts of potassium chloride, 5-9 parts of potassium sulfate, 3-8 parts of nitrohumic acid, 5-8 parts of ammonium chloride, 3-5 parts of calcium magnesium phosphate, 5-8 parts of glycerin and 5-9 parts of an additive. The rice fertile can protect rice from rice blast, false smut and the like, and has a low cost.

The invention discloses an ecological slow release fertilizer special for wheat. The fertilizer comprises the following raw materials (by weight): 13-21% of urea, 28-35% of monoammonium phosphate, 17-24% of potassium chloride, 8-14% of ammonium nitrate phosphate, 1-3% of phosphoric acid, 2-5% of liquefied ammonia, 1-3% of concentrated sulfuric acid, 6-13% of brown coal, 1-5% of nitrohumic acid, 4-10% of modified cassava starch, 0.5-1.5% of zinc-amino acid chelate, 0.5-1% of zinc sulfate, 0.5-1% of borax, 0.3-0.9% of ferrous sulphate, 1-1.5% of manganese sulfate, 0.1-0.3% of ammonium molybdate, 0.1-0.5% of a fertilizer synergist and 1-6% of porous auxiliary material. The ecological slow release fertilizer special for wheat can fully supply nutrients for wheat. Nutrients are complete and supply is lasting. Release of nutrients can be controlled. Topdressing is not required by one-time fertilization, and soil pollution will not be caused. By the use of the fertilizer, quality and yield of wheat are remarkably raised.

The invention provides a selenium-rich and chromium-rich paddy compound fertilizer, prepared from the following raw materials in parts by weight: 400-600 parts of nitrogen fertilizer, 800-1000 parts of phosphogypsum, 200-400 parts of potash fertilizer, 50-100 parts of manganese fertilizer, 50-80 parts of silicon fertilizer, 30-40 parts of carbon enzyme, 50-70 parts of nitrohumic acid, 2-8 parts of organic trace elements, 3-7 parts of inorganic trace elements, 10-20 parts of biomass lime-ash, 1-2 parts of inorganic selenium salt and 0.01-0.03 part of chromium trichloride; the organic trace elements comprise a saccharose complex and a humic acid complex. The selenium-rich and chromium-rich paddy compound fertilizer has the advantages of high peanut yield, strong plant disease resistance and suitability for large-area application, fruited earheads are bigger and heavy, and good in quality, and selenium-rich and chromium-rich paddy contains a selenium element and a chromium element necessary for human bodies and animals, and is high in nutrition value and beneficial to health.

The invention discloses a high-efficiency fertilizer for trichosanthes kirilowii Maxim planting. The high-efficiency fertilizer is prepared from the following raw materials in parts by weight: 45-60 parts of farmyard manure, 5-9 parts of potassium chloride, 11-20 parts of clam shell powder, 15-20 parts of beet root, 3-12 parts of bagasse, 4-6 parts of alginate, 4-9 parts of ammonium oxalate, 4-5 parts of sodium polyacrylate, 10-20 parts of calcium superphosphate, 6-8 parts of potassium fulvate, 5-15 parts of molybdenum trioxide, 2-4 parts of potassium dihydrogen phosphate, 3-4 parts of zinc sulfate, 2-4 parts of copper sulfate, 5-6 parts of malic acid, 6-7 parts of succinic acid, 3-6 parts of nitrohumic acid, 2-4 parts of ammonium sulfate, 3-8 parts of potassium sulfate, 2-3 parts of diethylaminoethanol caproate and 5-12 parts of aid. Compared with the prior art, the high-efficiency fertilizer for trichosanthes kirilowii Maxim can protect the ecological environment and farmland soil; the contained nitrogen, phosphorus and potassium are proportioned scientifically, and thus, can be easily absorbed by the crops, so the yield increase benefit is obvious; the high-efficiency fertilizer has the dual functions of fertilization and sterilization, and has the advantages of environmental protection, no pollution and the like; the high-efficiency fertilizer can balance the nutrition absorption, effectively enhances the trichosanthes kirilowii Maxim quality and increases the yield.

The invention discloses a fertilizer special for bananas. The fertilizer is prepared from nitrogenous fertilizer, phosphatic fertilizer, potash fertilizer, silicon-calcium-magnesium organic fertilizer, nitrohumic acid, amino acid, organic microelements, inorganic microelements, biomass ash residue and lime powder. The organic microelements comprise tartaric acid complex copper, sucrose complex iron, sucrose complex zinc, sucrose complex manganese, sucrose complex magnesium, humic acid complex potassium, humic acid complex magnesium, humic acid complex molybdenum, humic acid urea iron and EDTA chelation boron. According to the fertilizer special for bananas, the organic fertilizer and the inorganic fertilizer are reasonably combined, so that the fertility lasting time is longer, plant body resistance can be effectively adjusted, diseases are reduced, and the yield is improved; the crop quality is greatly improved, and the taste is good. The fertilizer special for bananas can resist diseases and disasters, improve the immunity of bananas, and well prevent commonly-occurring diseases of bananas.

The invention relates to a special fertilizer for rice, which is composed of the following raw materials in parts by weight: 10-30 parts of urea, 15-20 parts of diammonium bicarbonate, 10-15 parts of potassium chloride, 15-20 parts of potassium sulfate, 5-15 parts of zinc sulfate, 5-10 parts of nitrohumic acid, 1-4 parts of ammonium chloride, 2-4 parts of calcium magnesia phosphate fertilizer, 1-5 parts of silicate ore powder, 20-50 parts of glycerol, 18-30 parts of calcium superphosphate and 1-5 parts of borax. The special fertilizer for rice is suitable for various growth stages of rice. The special fertilizer for rice can prevent rice blast, green smut and other diseases of the rice, and has the advantages of low raw material cost and obvious yield increase effect.

The invention relates to a chemical fertilizer specially used for rice. The chemical fertilizer is prepared from the following components in percentage by weight: 18-23 parts of urea, 15-20 parts of ammonium bicarbonate, 10-15 parts of potassium chloride, 15-20 parts of potassium sulphate, 5-8 parts of zinc sulfate, 5-8 parts of sodium borate, 2-4 parts of ammonium chloride, 2-4 parts of nitrohumic acid, 2-4 parts of calcium magnesium phosphate, 1-3 parts of disodium guanylate, 1-3 parts of disodium inosinic acid, 1-3 parts of silicate mineral powder and the balance of glycerinum. The chemical fertilizer specially used for the rice, which adopts the technical features, can be applicable to the growth of all stages of the rice by controlling different ratios of the chemical fertilizer to an additive in the components.

The invention discloses a soil-improving slow release fertilizer special for selenium-rich cucumbers. The slow release fertilizer is prepared from urea, wheat straw, sweet potato vines, fruit peel, traditional Chinese medicine dregs, sucrose, saccharified powder, yeast powder, cellulase, a straw fermentation bacterium agent, urea phosphate, ammonium phosphate, potassium chloride, diammonium phosphate, monoammonium phosphate, monopotassium phosphate, potassium nitrate, calcium humate, magnesium humate, boron humate, zinc humate, sodium humate, humic acid ferric urate, nitrohumic acid, a slow release agent and a selenium-rich additive. The prepared slow release fertilizer special for selenium-rich cucumbers contains rich organic substances, inorganic substances and mineral substances and can meet various nutrient substance requirements in cucumber production; slow release agent coating is carried out in the preparation process, the release efficiency and quality of nutrients are effectively improved, and the yield and quality of cucumbers are improved; due to the added selenium-rich additive, cucumbers contain rich selenium.

The invention discloses a method for efficiently planting apples on saline and alkaline lands. The method is characterized in that according to growth and development characteristics of the apples, water and fertilizer characteristics of the saline and alkaline lands are combined, physical, chemical and biological control measures of the saline and alkaline lands and apple planting techniques areintegrated, the saline and alkaline lands are pretreated by the aid of calcium super-phosphate cream powder, shell powder and compound microbial agents, livestock and poultry manure bio-organic fertilizers, nitrohumic acid and seaweed fertilizers are applied onto the saline and alkaline lands, soil structures of the saline and alkaline lands are effectively improved, a pH (potential of hydrogen) value of soil and salinity are reduced, the fertility of the saline and alkaline lands is improved, Chinese flowering crabapple seedlings are transplanted onto the saline and alkaline lands and then serve as stocks to graft the apples, so that the apples are efficiently planted on the saline and alkaline lands, and an efficient planting key technique system of the apples on the saline and alkalinelands is constructed. According to the method, the growth rate of the apples on the saline and alkaline lands can be remarkably increased, the yield of the apples and the quality of fresh apples are remarkably improved, and method is suitable for popularization and application in saline and alkaline areas.

The invention discloses a biomass charcoal based microbial agent for preventing and controlling watermelon fusarium wilt as well as a preparation method and application thereof. The microbial agent contains the following components: biomass charcoal, attapulgite, watermelon fusarium wilt biocontrol bacterium, calcium superphosphate or nitrohumic acid and sterile water. The preparation method for the microbial agent comprises the following steps: absorbing the biocontrol bacterium solution to the biomass charcoal, and then adding attapulgite and calcium superphosphate or nitrohumic acid and uniformly mixing, adding a defined amount of sterile water, blending, pelletizing and drying in a dry ventilating place under a natural condition, thereby acquiring the microbial agent. The viable count in the microbial agent is more than or equal to 50 hundred million cfu / g, the diameter of the grain is 3-6mm and pH value is 6.5-7.5. The microbial agent disclosed by the invention has the functions of improving chemical and physical properties of soil, promoting soil enzyme activity, promoting crop growth, increasing crop output, and the like, and has an excellent function for preventing and controlling the watermelon fusarium wilt.

The invention discloses a fertilizer special for cultivating dragon fruits. The fertilizer comprises the raw materials including fermented chicken droppings, fermented straws, wormcast, urea, ammonium nitrate, monoammonium phosphate, calcium phosphate, potassium nitrate, potassium sulphate, magnesium sulphate, cuprous chloride, ferrous sulphate, manganese sulphate, borax, zinc sulphate, sodium selenite, nitrohumic acid, kieselguhr, polyvinyl alcohol, indolebutyric acid, naphthylacetic acid, 3,4-dimethylpyrazole phosphate, EM bacteria, sodium alginate, succinic acid and salicylic acid. The fertilizer special for cultivating dragon fruits disclosed by the invention is capable of promoting growth of dragon fruits, increasing the yield of dragon fruits, improving the quality of dragon fruits and preventing soil from being hardened; and the utilization rate of the fertilizer is high.

The invention discloses a fertilizer special for corn, which is composed of the following components: ammonium sulfate, urea, monoammonium phosphate, calcium superphosphate, calcium magnesium phosphate, potassium chloride, borax, trace element amino acid chelate, nitrohumic acid, amino acid, biological preparation, biological synergist, and conditioning agent. Compared with the prior fertilizer, the fertilizer special for corn can raise a sugar content of fruits, can shorten a mature period, can increase output, can save labor force cost, can alleviate pollution of underground water, can ensure grain and foodstuff safety, and can raise product quality.

The invention discloses a heavy metal wastewater treatment agent, which includes olea europaea pomace, olea europaea sawdust, nitrohumic acid resin, dithiocarboxylated aminomethyl polyacrylamide, biochar, pyrrolidine dithiocarbamate chelated cellulose, starch xanthate, sodium dodecyl sulfonate, a cross-linking agent, sulfonated sulphur heterocarbon, 717 anion exchange resin, modified sericin, polyaspartic acid, beta-cyclodextrin, thiocarbazide, an accelerant, poly(diallylammonium chloride-acrylamide)yl sodium dithiocarbamate. Complexing, precipitation, coagulation, adsorption and other ways are adopted for synergistic coupling integrated treatment of heavy metal wastewater, the treatment agent has the characteristics of coarse flocculation, fast precipitation and strong trapping capacity,and can treat Cu<2+>, Cd<2+>, Hg<2+>, Pb<2+>, Mn<2+>, Ni<2+>, Zn<2+>, Cr<3+> and various heavy metals in wastewater, and also can remove part of COD ammonia nitrogen, phosphorus and Cr<6+>.

The invention discloses organic base fertilizer for rice and a preparation method thereof. The organic base fertilizer for rice comprises the following raw materials in parts by weight: 30-50 parts ofstraw biochar, 3-15 parts of soybean meal, 3-9 parts of nitrohumic acid, 5-10 parts of bentonite, 5-15 parts of bone meal, 3-10 parts of clay, 2-8 parts of wood vinegar, 0.5-1.5 parts of iron ore slag, 0.1-0.5 parts of organic fertilizer ferment powder and 5-10 parts of water. The organic fertilizer disclosed by the invention has the advantages that inorganic chemical fertilizer components are not contained; rice plants are healthy and high in growth speed; field weeds are few; the rice is full in grain and high in yield; the compaction degree of field soil is improved; the preparation methodis simple; the production process flow is easy to operate; and therefore, the organic base fertilizer is suitable for large-scale popularization.

Nutritional type ginseng land soil thermogenic agent belongs to the technical field of agriculture, and solves the problem that the root system suffers from serious frozen injury, and the survival rate of seedling is low when in the growing process of ginseng. The soil water retention agent is prepared by mixing 40.0-60.0% of pulverized fuel ash, 30.0-50.0% of crushed crop straw (with the water content of 60%), 0.30-0.50% of nitrohumic acid, 0.30-0.60% of monopotassium phosphate, 0.05-0.15% of boric acid, 0.10-0.30% of zinc sulfate, and 0.05-0.15% of ammonium molybdate based on the weight percentage. When in the land preparation, the nutritional type ginseng land soil thermogenic agent is evenly sprinkled on the soil, and the soil is ploughed for three times; when the soil water retention agent is uniformly mixed with ginseng bed soil with the depth of 30cm, the ginseng is transplanted. The invention is used for heating the ginseng land soil, and can raise the soil temperature. Meanwhile, the survival rate of seedling and the yield of the ginseng can be remarkably improved.

The invention discloses multifunctional compound fertilizer for saline-alkali soil. The multifunctional compound fertilizer comprises, by weight, 20-40 parts of nitrohumic acid particles, 10-20 parts of citric acid residues, 5-10 parts of modifier, 15-25 parts of duckweed residues, 5-15 parts of magnetic biochar, 5-15 parts of super-absorbent resin, 10-30 parts of nitrogen-phosphorus-potassium compound fertilizer and 2-6 parts of binder. The invention further discloses a preparation method of the multifunctional compound fertilizer. The multifunctional compound fertilizer has the advantages that the components of the multifunctional compound fertilizer are combined, and the multifunctional compound fertilizer is low in cost, scientific and reasonable in proportion, sufficient in nutrition, high in utilization rate, evident in yield increasing effect, balanced in nutrition of each particle, capable of evidently improving the soil, increasing the granular structure in the soil, lowering the pH of the soil and fundamentally improving the physical and chemical properties of the saline-alkali soil, especially suitable for the growth of crops in the saline-alkali soil and capable of providing a guarantee to the yield increasing and the income creating of farmers. The preparation method of the multifunctional compound fertilizer is simple, practicable and suitable for large-scale popularization and application.

The invention discloses a special fertilizer for cucumber. The special fertilizer is prepared from the following raw materials by weight percent: 20.7-21% of urea, 0.8-1% of boric acid, 63.8-65.1% of calcium-magnesium phosphate, 0.2-0.3% of zinc sulfate, 8.2-8.6% of potassium chloride, 0.3-0.6% of magnesium sulfate, 4.1-4.4% of nitrohumic acid and 0.3-0.6% of rice bran. According to the special fertilizer for the cucumber, a scientific formula is adopted, the contents of magnesium, potassium, calcium and zinc in soil are increased, and then, the yield of the cucumber is increased.

The invention discloses a special fertilizer for tea trees and a preparation method thereof. The special fertilizer comprises the following raw materials in parts by weight: 6-10 parts of tea leaf powder, 1-5 parts of plant ash, 4-6 parts of nitrohumic acid, 20-30 parts of tea tree branch powder, 2-5 parts of monoammonium phosphate, 1-4 parts of zinc sulfate, 2-3 parts of eucalyptus oil, 3-7 parts of zinc sulfate, 1-6 parts of ferrous sulfate, 4-8 parts of gypsum powder, 3-8 parts of manganese sulfate, 12-18 parts of diatomite, 6-10 parts of peat soil, 6-8 parts of ammonium sulfate, 2-6 parts of iron-ore slag, 1-4 parts of nanocarbon, 10-20 parts of urea, 7-12 parts of soybean meal and 3-8 parts of boric acid. The fertilizer disclosed by the invention is reasonable in formula, is an organic and inorganic fertilizer which integrates organic matters and inorganic nutrients into a whole and contains nutrient substances needed in various growing periods of tea trees, the quality of the tea trees is effectively improved, and the cost is effectively reduced.

The invention discloses a liquid-fermentation organic matter adsorption fertilizer and a preparation method thereof. The fertilizer is prepared from the following raw materials in parts by weight: bentonite, carbon powder, starch, a diphenol propane epoxy resin, cement, gypsum powder, wheat bran, sheep manure, bone powder, a ferment, phellodendron bark powder, rapeseed residues, rice bran, peat soil, ammonium sulfate, nitrohumic acid and a proper amount of water. By using the liquid fermentation, the fermentation degree is more complete; and by using the liquid fermentation, all the fermented organic matters, organic acids, hormones, antibiotics and the like exist in the solution, and the particular modified bentonite particles are used for adsorption. The bentonite belongs to mineral clay, and can keep the activity of the fermentation components after adsorption. The fertilizer slowly releases organic components by the self cracking. The plant growth regulation belongs to a gradual and slow process, and can display the maximum effect of the organic fermentation products.

The invention discloses a fertilizer for improving cultivating soil of urban landscaping flowers and a preparation method. The fertilizer is characterized by being prepared from the following raw materials in parts by weight: 50-60 parts of natural clay minerals, 30-35 parts of decomposed coal, 20-25 parts of waste slag ceramics, 15-20 parts of chlorite, 15-20 parts of fermented dried swine feces, 60-70 parts of garden rotted leaves, 55-65 parts of municipal wastewater, 1-2 parts of EM biological bacterium, 6-8 parts of potassium fulvic acid, 3-4 parts of a humic acid silicon fertilizer, 3-5 parts of ammonium humate, 2-4 parts of nitrohumic acid, 6-8 parts of nitrogen humate, 8-10 parts of vinasse, 4-6 parts of a phosphatic fertilizer, 1-2 parts of sodium borate, 18-20 parts of alkyd resin, 9-10 parts of a soil conditioner and a proper amount of water. According to the fertilizer for improving cultivating soil of urban landscaping flowers and the preparation method, provided by the invention, waste slag ceramics and the soil conditioner prepared from lime nitrogen, charcoal, medical stone flour and zeolite powder are combined, so that the soil structure is improved, besides, the great deal of materials that are easy to obtain are adopted for nourishment of the urban landscaping flowers, the environmental protection effect on the nature can be realized both in the sources of the fertilizer and the application of the fertilizer, and the utilization of waste slag ceramics is realized.

The invention discloses a special fertilizer for selenium-enriched tea leaves. The special fertilizer for selenium-enriched tea leaves is prepared from the following raw materials: selenium-enriched tea leaf waste residue, rapeseed straws, pig manure, cow dung, saw dust, bean pulp, biogas residue, bone meal, cinder, bacterial power, zeolite powder, kaolin, nitrohumic acid, polysaccharide selenate,monopotassium phosphate, diammonium hydrogen phosphate, urea, zinc sulfate, ferrous sulfate, molybdenum trisulfate, borax and sodium selenite. The invention also discloses a preparation method of thespecial fertilizer for selenium-enriched tea leaves. According to the special fertilizer for selenium-enriched tea leaves prepared in the invention, the selenium-enriched tea leaf waste residue generated after the selenium-enriched tea leaves are used is effectively utilized, and the sodium selenite is added to serve as a selenium source, so that the selenium content of the planted selenium-enriched tea leaves is improved, and the health care effect of the selenium-enriched tea leaves is guaranteed.

The invention relates to a method for co-production of a chemical synthetic fertilizer by industrial calcium products, and belongs to the field of production of agricultural fertilizers. The method comprises the following steps: preparing phosphorite powder into ore pulp by using a raw material slurry method, reacting the ore pulp with nitric acid, and filtering; feeding filter residues to a compound fertilizer workshop to produce a nitrohumic acid compound fertilizer; adding sodium nitrate in the filtrate to remove fluoride; centrifugally dehydrating; drying the filter residues to prepare sodium fluosilicate; adding ammonium sulfate, potassium sulphate or potassium carbonate in the filtrate to deposit calcium; then filtering; preparing the industrial calcium products from the filter residues; and neutralizing, concentrating, guniting, drying, cooling, enveloping, metering and packing the filtrate to obtain the chemical synthetic fertilizer.

The invention relates to the technical field of filtrate reducer for drilling fluids, and in particular, relates to a high-temperature-resistant composite filtrate reducer for a seawater drilling fluid and a preparation method of the high-temperature-resistant composite filtrate reducer. A main chain of the filtrate reducer is chemically modified by using nanocrystalline cellulose, so that a polymer A-C-C has excellent filtrate reduction performance and thermal stability, the specific high-temperature-resistant filtrate reducer sodium nitrohumate is preferably selected to be compounded with the polymer A-C-C for use, a synergistic effect is exerted, and the performance of the compound filtrate reducer is further improved. The high-temperature-resistant composite filtrate reducer for the seawater drilling fluid has the advantages of excellent filtrate reduction performance, high temperature resistance and the like, the preparation raw materials are low in acquisition difficulty and easy to biodegrade, and the high-temperature-resistant composite filtrate reducer has good environmental protection performance and wide application prospects.

The invention discloses organic fertilizer for lowering the content of cadmium in soil. The organic fertilizer is prepared from the following components in percentage by mass: 2-4% of urea, 1-5% of potassium sulphate, 1-3% of sodium nitrate, 2-6% of diammonium phosphate, 1.5-2.5% of sodium selenite, 15-17% of nitrohumic acid, 23-25% of straw, 3-5% of a biological agent, 30-40% of faeces, and the balance of water. The invention further discloses a preparation method of the organic fertilizer for lowering the content of the cadmium in the soil. The preparation method includes seven steps. The principles that micro element fertilizer (iron, manganese, zinc, silicon fertilizer) and organic matter resist the cadmium, the micro element fertilizer (iron, manganese, zinc, silicon fertilizer) lowers the cadmium is mainly adopted, specifically, part of common ways for crops to absorb the cadmium, the iron, the zinc and other mineral elements exist, and when certain heavy metal in the soil is high in content and seriously pollutes the soil, another microelement which is slightly harmful to the crops and beneficial to crop growth at the low concentration can be used for antagonizing the heavymetal.