118 results about "Agricultural chemistry" patented technology

The invention relates to a weedicide composition and an application method thereof. The composition comprises an active component A and an active component B, wherein the weight ratio of the componentA to the component B is 1:100 to 1:1; the component A is selected from a compound as shown in the following general formula: (the formula is as shown in the description); and the component B is selected from glyphosate as well as salt or ester suitable for agricultural chemistry. The weedicide composition is particularly suitable for preventing and removing weed which has tolerance or resistanceon organophosphorus weedicide, particularly the glyphosate.

The invention relates to the field of agricultural chemistry, in particular relates to a carbon-based controlled-release fertilizer special for potato and a preparation method thereof. The environment-friendly efficient carbon-based controlled-release fertilizer special for the potato is a long-acting granular-carbon-based compound fertilizer which is prepared from waste agriculture and forestry biomasses such as corn core, peanut shell, rice shell, edible fungi substrate and the like, wherein the biological granular carbon is black carbon powder granules (carbon black) which is formed by imperfect combustion of biomasses under anaerobic condition and has various features similar to those of soil humus (acid); and the biological granular carbon has strong capabilities of absorbing and retaining nutrition and moisture, can stimulate growth of crops and has good controlled-release effect on NPK, thus the prepared controlled-release fertilizer only needs to be applied once in the full growth and development period of potatoes, has the characteristics of increasing soil fertility, improving soil structure and the like, is efficient and environment-friendly, and has a wide application prospect.

The invention provides an in-situ electric heating desorption restoration technology and device for a contaminated site, belongs to the technical field of soil restoration, and solves the problems that soil and underground water are polluted due to industrial pollution and agricultural chemistry, and the like. The in-situ electric heating desorption restoration technology for the contaminated site comprises the steps of a, inserting a plurality of heating wells and extraction wells into the contaminated site; b, paving a thermal insulating layer on the surface of the contaminated site; c, carrying out precipitation treatment on the underground water of the contaminated site; d, heating the contaminated site through heating pipes in the heating wells, and extracting gaseous pollutants generated by the heated contaminated site and polluted underground water through vacuum pumps in the extraction wells, so as to restore the contaminated site; and e, feeding the gaseous pollutants and the polluted underground water extracted in the step d into a border thermal cycle pipe buried in a stratum at the border for secondary heat exchange, and then feeding the gaseous pollutants and the polluted underground water subjected to secondary heat exchange into a ground extraction treatment device for treatment. The in-situ electric heating desorption restoration technology has the advantages that full automatic temperature control is achieved, waste heat is fully reused, the layout is flexible, a higher scientific and technological level is reached, and the like.

The present invention is directed to micro-encapsulated formulations of soil-active pest control and agricultural chemicals such as herbicides, insecticides, nematicides and fungicides (pesticides) that combine a strong initial activity and a longer residual activity in the soil than provided by current micro-encapsulated formulations. These formulations are prepared by combining two separate suspensions of microcapsules, containing one or more pesticides, which were separately prepared under differing conditions and therefore have significantly different chemical properties and field release rates. The present invention, in particular, is useful for the herbicide clomazone, alone or in combination with other herbicides.

The present invention relates to a water-dispersible particle containing paraquat dichloride and a preparation method thereof. The paraquat, an active ingredient of a non-selective herbicide, is strongly adsorbed on minerals in the soil, especially supplements such as clay, bentonite, talc, pyrophyllite, montmorillonite, etc. , so it is generally known to be inactive. Paraquat is converted into a water dispersible granule type so that the dispersible granule type can be safe for humans and has excellent agrochemical effects compared to other formulation types such as soluble concentrate type or wettable powder type. The agrochemical composition of the present invention is prepared by mixing and kneading 5-50% by weight of paraquat, 5-30% by weight of surfactant, 1-20% by weight of rupture accelerator and the remainder of the extender, and the kneaded mixture is formed into granules , and these granules are dried.

The present disclosure pertains to the field of the production of functional coatings for the controlled release of volatile agents. More specifically, it consists in capsules, in particular microcapsules or nanocapsules which are chemically functionalised with photocatalytic nanomaterials on the inner or outer surface of the capsule shell, and which release, by the action of sunlight or artificial light in the same spectrum of electromagnetic radiation, the diffusing or active agent, which can be a vapour, a liquid or a solid. The present disclosure thus relates to a capsule for carrying an active agent with photocatalytic properties, having an outer diameter of 0.1-500 um, the capsule being formed by a shell and a core to contain the diffusing agent. The present disclosure also relates to a method for producing the disclosed capsules. The fields of use are the pharmaceutical, bioengineering, civil engineering, agrochemical, automobile and food industries.

In an agricultural chemicals formulation which is scattered by being thrown directly into a paddy field filled with water, it is an object to provide a composition having an excellent spreadability without stagnation of an agrochemically active ingredient at the point of throwing, and in particular to provide a labor-saving formulation for scattering (application) which contains a liquid agrochemically active ingredient at room temperature, and to provide an agricultural chemicals formulation containing a liquid agrochemically active ingredient at room temperature in high concentrations, which have been difficult to be realized. The agricultural chemicals formulation for a rice paddy field is produced by preparing a granular composition in a manner that a mixture of a liquid agrochemically active ingredient at room temperature, a surfactant, and a substance exhibiting a thickening function or a gelation function in the water, is held and carried by a granular nucleus, and packing it with a water-soluble film. The present invention also provides a method of scattering (applying) the agrochemically active ingredient, which is characterized by that the agricultural chemicals formulation is directly thrown into a paddy field filled with water at a rate of 2 to 20 bags per 10 a.

The invention relates to a preparation method of magnetic hydrogel with high adsorbability on copper ions. The preparation method comprises the following steps of: performing emulsification by taking a certain amount of emulsifiers, dispersing agents and raw materials as a system and adopting a reverse phase suspension emulsion polymerization method, wherein the raw materials comprise alpha-cyclodextrin, sodium carboxymethylcellulose and magnetic ferroferric oxide particles; transferring the system to a reactor after uniform emulsification, adding a certain amount of initiators and cross-linking agents and performing a polymerization reaction at a certain temperature; and then sequentially performing the steps of performing thermostatic reaction, removing the solvents, washing, dialyzing (7-10d) and the like to obtain the high-adsorbability magnetic hydrogel. According to the high-adsorbability magnetic hydrogel prepared by the method, the highest water-absorbing rate on distilled water can reach 8058 g/g and the highest saturated adsorbing capacity on the metal copper ions is 992 mg/g. The hydrogel has high selective adsorbability on metal ions and is suitable for removing and recycling the metal ions in the aspects of industrial waste water, agricultural chemistry and the like.

The invention provides an agricultural chemical enhancer and an agricultural chemical composition which are safely used for crops without any phytotoxicity, have a potency enhancing action on various agricultural chemicals and promote the growth of a plant body to be intended to be grown. The invention relates to an agricultural chemical enhancer comprising at least one type selected from a specific alcohol compound, an ether compound and an ester compound.

The invention belongs to the pesticide field, and discloses a tablet containing paraquat dichloride and its preparation method. The paraquat dichloride comprises the following ingredients: 0.1-95wt% of paraquat dichloride, 1-30wt% of surfactant, 1-20% of disintegrating agent, emetic triazole pyrimidone which is equal to 0.18wt% of paraquat dichloride, 1-20wt% of degradation assistant, 0.001-0.1wt% of bittering agent, 0.05wt% of pigment, 0.1wt% of odor agent and 0-97wt% of diluent. The preparation method of the tablet comprises the following steps: mixing the ingredients, pressing a mixture into sheets by a tablet press machine and drying the tablets. The tablet containing paraquat dichloride is capable of raising the security on human body, compared with other preparation types such as water aqua or powdery dosage form, the tablet containing paraquat dichloride has excellent agricultural and chemical effects.

The invention relates to a maize fulvic acid polyelement composite liquid base fertilizer taking concentrated biogas slurry as a base solution, which is prepared from the following raw materials in portion by weight: 195 to 200 portions of ammonium polyphosphate, 110 to 115 portions of urea, 280 to 285 portions of potassium chloride, 5 to 6 portions of borax, 10 to 11 portions of heptahydrate zinc sulphate, 10 to 12 portions of suspending agent, 345 to 321 portions of the concentrated biogas slurry and 45 to 50 portions of fulvic acid. The liquid base fertilizer contains 352 to 368 g/L of macroelement, 53 to 57 g/L of the fulvic acid, and 11 to 21 g/L of water-insoluble matters; and the pH value of the fertilizer subjected to dilution by 250 times is 6.2 to 6.5. The production of the fertilizer comprises the following steps: comprehensive analysis of soil agricultural-chemistry characteristics, maize fertilization experiment, calculation of fertilizer proportion, selection of raw materials, material preparation, and mixing and preparation; and water is used for diluting the fertilizer by 200 times, and hole application is performed on the diluted fertilizer when hole sowing is performed on maize seeds at the same time, or the fertilizer is applied at a dosage of 65 kilogram/mu when water is irrigated to field. The fertilizer has no secondary pollution, and has reasonable and even application; and the invention provides a base fertilizer containing the macroelement, microelement and fulvic acid active substances to promote the growth and production increase of maize.

An ionically balanced composition for applying to soil or plants containing an aqueous solution of at least one anionic acrylamide polymer and an ionically balancing agent.

The object of this invention is to provide a plant cultivation system to efficiently supply the elements necessary for plant growth to the plant cultivation materials, which provides a cultivation environment for accelerating plant growth by supplying the elements necessary for plant growth, a cultivation method using the system and a production method for the system. This invention provides a plant cultivation system comprising a plant cultivation material, which provides a cultivation environment for accelerating plant growth by supplying the elements necessary for plant growth, and a container storing a liquid such as water, a nutrition solution and agrochemical products or a liquid supply tank storing a liquid such as water, a nutrition solution and agrochemical products in combination with tubing.

The invention belongs to the field of agricultural chemistry, and in particular relates to a rooting agent composition for accelerating the generation of aerial roots of plants. It includes chitosan oligosaccharide, and the weight percentage of chitosan oligosaccharide in the rooting agent composition is 0.0005% to 0.0025%. The chitosan oligosaccharide composition for rapid propagation of succulents according to the invention can promote succulents to produce aerial roots faster than common treatments, can shorten the propagation time, improve the survival rate of reproduction, and can effectively inhibit bacteria during rooting and fungal infections. The invention improves the propagation efficiency of economical succulents and reduces time cost.

Sulfone is an important drug and bioactive compound. Sulfone is widely used as a medicament, such as a medicament gamma-secretase inhibitor for preventing Alzheimer's disease, and is widely applied tobioactive compounds, natural products and agricultural chemicals, such as currently popular herbicide mesotrione. Sulfone is also most often used as an intermediate for organic synthesis. On the other hand, a chalcogen heterocyclic stent has biological activity, such as antitumor drugs and antiproliferative drugs. As is well-known, thiophene, furan and selenium compounds have a variety of biological activities, such as anti-inflammatory agents, anti-HIV PR inhibitors, NQO2 inhibitors, and anticancer agents. The invention develops a simple, convenient and efficient Bronsted acid, i.e., sulfuric acid and catalyzed three components react in water to synthesize aryl(chalcogen-heteroaryl)methyl sulfone, the yield is good to be very high, and the substrate range is wide. The synthesis method isenvironment-friendly and economic, and does not need metal catalysis. The sulfone product can be effectively converted into bactericide analogues and aryl heteroaryl ketones.

The invention belongs to the field of agricultural chemistry and particularly relates to an anti-evaporation agent containing a terpene compound and a preparation method of the agent. The anti-evaporation agent comprises, by mass, 1-50% of the terpene compound, 1-90% of pinolene and the balance excipient, wherein the total mass percentage content of the anti-evaporation agent is 100%. The terpenecompound, pinolene and the excipient are sufficiently and evenly stirred to form the anti-evaporation agent. After the terpene compound is mixed with pinolene, the anti-evaporation, insect-killing andbactericidal functions are obvious, the water potential of plant leaves and fruits can be improved, the crop yield is increased, the survival rate of plant transplantation and cuttage is increased, the temperature is increased, the moisture is reversed, the plant resistance is improved, and the anti-evaporation agent can be widely applied to the fields such as ornamental greening planting, largetree transplantation and fresh preservation of fruits, vegetables and flowers.

The invention relates to agricultural chemistry and particularly discloses a special fertilizer for bananas in tropical areas. The fertilizer takes urea, calcium magnesium phosphate and potassium sulphate single fertilizer as the main components and takes ground phosphate rock as filler. The fertilizer elements and the type of the fertilizer are matched with the soil property in tropical areas. Soil acidity slows the nitration process of NH4<+> caused by urea hydrolysis and speeds up the release of phosphorus in the calcium magnesium phosphate. The calcium magnesium phosphate can neutralize H+ released in NH4<+> nitration and applied physiological acidic fertilizer potassium sulphate, and simultaneously calcium ion and magnesium ion in the calcium magnesium phosphate can also be released, so that the absorption demands on calcium and magnesium during the growth of bananas are satisfied.