95 results about "Methomyl" patented technology

The present invention relates to a method for analyzing residual agricultural chemicals which comprises the steps of acting a reduced glutathione as a reactive substrate and a glutathione transferase serving as a catalyst for the reaction on a carbofuran derivative or a methomyl derivative as a carbamate type agricultural chemical of a new series to thus derivatize the agricultural chemical into a substance having a high choline esterase-inhibitory activity; reacting the substances formed through the derivatization reaction with a choline esterase; and then detecting the presence of the agricultural chemical as the new series of carbamate type one included in a sample to be examined on the basis of the changes in the choline esterase activity thus detected. The method of the present invention may serve as a powerful tool for the detection of the residual agricultural chemicals in grains such as rice and the detection of the content of agricultural chemicals remaining in agricultural products such as vegetables and fruits.

The invention relates to a medicine producing field, specifically, to an improved producing method of antibacterial medicine nifuratel. The method makes use of thiourea as initial material to produce nifuratel. The improvement is that it is no longer to use methyl mercaptan or methomyl in the known method while producing the intermediate 2-(methylthiomethyl)hydropropane. Furthermore, the invention is no longer to use metal natrium in the known method when the 3-methylthio-2-hydroxy-propylhydrazine and diethyl carbonate are heated to produce N-amido-5-methylthiomethyl-2-oxazolidone in the existance of alkali. All of the improvements largely improve the preparation of the nifuratel, especially for the production condition in a large scale, reduce the environment pollution and benefit to ensure the production safety.

The invention discloses a nematicide composition containing oligosaccharides and application thereof. The composition contains a controlling-effective amount of oligosaccharides and nematicide; the content of the oligosaccharides accounts for 1 to 10% of the gross weight of the composition, and the oligosaccharides comprise chitosan oligosaccharide, sodium alginate oligosaccharide and pectin oligosaccharide; and the content of the nematicide accounts for 0.5 to 30% of the gross weight of the composition, and the nematicide is one or more selected from the group consisting of avermectin, carbosulfan, emamectin benzoate, methomyl, chlopyrifos, trichlorfon, lambda-cyhalothrin and phoxim. The composition is applied to field crops, commercial crops and fruits and vegetables suffering from damage by nematode and can effectively prevent occurrence of nematode; as the oligosaccharides capable of inducting disease resistance of plants and promoting root growth are introduced into a nematode controlling drug, growth and nutrient absorption of plants are promoted and a controlling effect is exerted on soil-borne diseases while nematode is killed.

The invention discloses an ultra-low volume concentrate for controlling cotton noctuidae pests, which is prepared into an electrostatic spraying liquid formulation with the following components in parts by weight: 0.1-90 parts of active component, 15 parts of conductive agent, 20 parts of cosolvent and balance of solvent, wherein the active component comprises any one of emamectin benzoate, methomyl, chlorpyrifos, lufenuron, indoxacarb and chlorfenapyr; and an active component A and an active component B account for 0.1%-95% of the total weight of the combination. The single agent is any one of the following active components, and the active components account for 0.1%-90% of the total weight. The weight ratio of the active component A to the active component B is 0.1:90-90:0.1. The invention has high controlling effect, low dosage, environment protection, convenient processing, low cost, good reagent effect, long persistent effect and high work efficiency, and can reduce environment pollution, improves utilization ratio of pesticides, reduces pesticide consumption and is suitable for electrostatic spraying.

The invention discloses a method for preventing disease of zanthoxylum bungeanum maxim. The method comprises 1 utilizing 5-baume-degree lime sulphur to clean and sterilize a garden from December to February to kill winter generation; 2 utilizing 1000-fold spray of imidacloprid to kill aphid of the zanthoxylum bungeanum maxim in March; 3 utilizing 1000-fold 50% trichlorphon to spray and kill larvae of swallowtail of the zanthoxylum bungeanum maxim during April and May; 4 utilizing 500-fold of methomyl pesticide to kill gall midge adults of the zanthoxylum bungeanum maxim during June and July; 5 spraying 1000-fold chlorpyrifos to kill dung beetles of the zanthoxylum bungeanum maxim in August; 6 spraying 3000-fold lvheng-avermectin to kill red spider adults of the zanthoxylum bungeanum maxim during September and October; and 7 killing flatheaded borer larvae of the zanthoxylum bungeanum maxim in November through a hammering method. According to the method, plant diseases and insect pests easily occurre in periods of time in the zanthoxylum bungeanum maxim in one year are prevented and cured systematically in a targeted mode, common plant diseases and insect pests of the zanthoxylum bungeanum maxim can be effectively prevented and cured, the occurrence rate of the plant diseases and insect pests of the Zanthoxylum bungeanum Maxim can be reduced, and the yield of the zanthoxylum bungeanum maxim can be improved.

The invention discloses a preparation method of thiodicarb. The preparation method comprises the following steps: (1) dividing a solvent into two portions, dissolving methomyl in one of the two portions to obtain a methomyl solution, and dissolving 4-dimethylaminopyridine in the other portion to obtain a solvent which contains a catalyst; and (2) dividing sulfur dichloride into two portions, dropwise adding one portion of the sulfur dichloride in the solvent which contains the catalyst under a closed condition, meanwhile, dropwise adding the other portion of sulfur dichloride and carrying outdropwise adding reaction on the other portion of sulfur dichloride and the methomyl solution obtained in step (1), and carrying out insulating reaction after dropwise adding is finished to obtain thethiodicarb. The preparation method of the thiodicarb has the advantages that the reaction selectivity is high, the purity of the obtained product is high, the content of thiodicarb isomer is smaller than 0.4%, the yield is high and the like.

The invention discloses a microemulsion pesticide, which consists of the following components in percentage by weight: 3.5 to 35 percent of technical material, 3 to 20 percent of methanol, 2 to 10 percent of cyclohexanone, 2 to 6 percent of pesticide emulsifier No.404, 2 to 6 percent of tri-styrylphenol polyoxyethylene polyoxypropylene ether, 2 to 6 percent of nonylphenol polyoxyethylene ether, and the balance of water, wherein the chemical material is one or two of beta-cypermethrin, lambda-cyhalothrin, cyfluthrin, methomyl, carbosulfan, monosultap, bisultap, diafenthiuron, hexaflumuron, emamectin benzoate, abamectin and sophocarpidine. The invention has the advantages of wide application range, stable formulation, simple formula and convenience for production.

The invention discloses a method for preparing pesticide methomyl. The method comprises the following steps: pulping methylthio acetaldehyde oxi me with water, dripping methyl isocyanate into the pulped methylthio acetaldehyde oxi me solution for reaction according to a mass ratio of the methylthio acetaldehyde oxi me to the methyl isocyanate being 1:(1.0-1.3), controlling the reaction temperature to be 5-15 DEG C and reacting time to be 1.5-3 hours; filtering through micropores, cooling, crystallizing, re-filtering, and drying. The method is convenient to operate, safe and controllable in production, can reduce the generation of side products, improves the yield and the quality, reduces the energy consumption and the production cost, improves the production field environment, further improves the solubility and the safety of the reaction, and reduces the emission of 'the Three Wastes'.

The invention discloses a mango planting method, and belongs to the technical field of fruit planting. The planting method comprises the steps of land preparation, field planting, nutrient and water management, branch pruning, disease and pest control and flower and fruit management, wherein in the step of nutrient and water management, every year, soil is subjected to deep tillage, a special mango fertilizer is applied to the soil one time, and the special mango fertilizer is prepared from cinnamon leaf pulp, waste alcohol mash, dry cow dung, wormcast, trichoderma sp, fulvic acid, potassium hydroxide and selenium ore powder; in the step of disease and pest control, forage grass is intercropped, a pest attractive toxicant is sprayed on the forage grass for pest control, and the pest attractive toxicant is prepared from cannabis oil, ground coffee, cinnamon powder, methomyl, nericum indicum and water. In the mango planting method, a lot of cinnamon leaf pulp and a lot of waste alcohol mash are used so that resources can be sufficiently utilized, and meanwhile, environmental pollution is reduced. By intercropping the forage grass and applying the attractive toxicant to the forage grass, the pests are trapped and killed, the pest and disease damage of mango can be effectively controlled, moreover, harmful substances cannot remain in mango pulp, and the mango quality is improved.

The invention relates to an ultra-low-volume liquid containing lufenuron and carbamate pesticide. Lufenuron and an active ingredient II are compounded to form a chemical component of the ultra-low-volume liquid, and remaining components of the ultra-low-volume liquid include a surfactant and a solvent. The active ingredient II is optionally one of carbosulfan, benfuracarb, nitrilacarb, fenobucarb, isoprocarb, triazamate, pirimicarb, metolcarb, dimethacarb, carbaryl, methiocarb, methomyl or thiodicarb. The ultra-low-volume liquid is convenient to process, long in lasting effect and high in work efficiency, targets cannot generate pesticide resistance easily, the environmental pollution is low, the pesticide and water are saved, the pesticide utilizing rate is improved, and various pests of rice, wheat, corns, vegetables, tobaccos, tea trees, fruit trees and sugarcane can be controlled by ultra-low-volume spraying, low-volume spraying or ultra-low-volume electrostatic spraying.

The invention discloses a synergistic pesticide composition and application thereof. The active components of the synergistic pesticide composition are flufiprole and carbamate pesticide, wherein the carbamate pesticide is one of fenobucarb, isoprocarb, carbosulfan, carbaryl, metolcarb, methomyl, pirimicarb and thiodicarb. The weight ratio of the flufiprole to the carbamate pesticide is (1:50) - (1:1), and the weight percentages of the flufiprole and the carbamate pesticide in the composition are both 2-80%. The synergistic pesticide composition is applied to preventing and controlling agricultural pests. Through the application of the synergistic pesticide composition, the control efficiency is obviously improved as compared with that of single dosage, the use amount of the pesticide is reduced, the influence of pesticide on environment is reduced, and the pesticide cost is lowered.

The invention discloses an emamectin-benzoate and methomyl microemulsion and a preparation method thereof. The microemulsion mainly comprises 5-30 percent of methomyl, 0.5-2 percent of emamectin-benzoate, 0.5-2 percent of penetrating agent, 0.5-5 percent of synergistic agent, 1-5 percent of antifreeze, 5-25 percent of latent solvent, 5-25 percent of emulsifier and the balance water for complement. The microemulsion is a pesticide with high efficiency, low toxicity and strong systemic capability, has very good prevention effect on diamond back moths on Cruciferae and additionally has special effect on other pests and insects with sucking mouth parts and scratching mouth parts.

The invention relates to a molecular imprinting photonic crystal detecting card and application thereof. Molecular imprinting pre-polymerization liquid is poured into a photonic crystal template; after polymerization, template molecules are washed away to obtain the molecular imprinting photonic crystal detecting card. The molecular imprinting photonic crystal pesticide residue fast detecting cardrelated by the invention has specific selectivity on target pesticide molecules; the interference of other pesticide molecules in complicated test environments can be avoided; the surface structure color can respond the outside stimulation; the naked eye visibility is realized; through contrast with a standard color card, the content of methomyl in an object to be tested can be fast obtained. Theprepared molecular imprinting photonic crystal detecting card provides an accurate, sensitive and fast novel method for detecting the methomyl pesticide residue; the reference is also provided for the development of other kinds of pesticide residue detecting technologies.

The invention relates to ultra-low-volume liquid containing cyantraniliprole and carbamate pesticide. Cyantraniliprole and an active ingredient II are compounded to form a chemical component of the ultra-low-volume liquid, and remaining components include a surfactant and a solvent. The active ingredient II is optionally one of carbosulfan, benfuracarb, nitrilacarb, fenobucarb, isoprocarb, triazamate, pirimicarb, metolcarb, dimethacarb, carbaryl, methiocarb, methomyl or thiodicarb. The ultra-low-volume liquid is convenient to process, long in lasting effect and high in work efficiency, targets cannot generate pesticide resistance easily, the environmental pollution is low, the pesticide and water are saved, the pesticide utilizing rate is improved, and various pests of rice, wheat, corns, vegetables, tobaccos, tea trees, fruit trees and sugarcane can be controlled by ultra-low-volume spraying, low-volume spraying or ultra-low-volume electrostatic spraying.

The invention discloses a tea tree-dendrobium wild-simulated symbiosis cultivation method and belongs to the technical field of dendrobium planting. The method includes the steps of firstly, smearingtwo sides of waterproof and breathable films with a protecting liquid which comprises a methomyl aqueous solution, an oxamyl aqueous solution and daconil aqueous solution; adhering multiple waterproofand breathable films to two sides of the root system of dendrobium, wherein a gap is reserved between every two adjacent waterproof and breathable films on the same side; secondly, adhering mulchingfilms on two sides of the root system of the dendrobium, allowing the mulching films to cover the root system, and fixing the dendrobium coated with the mulching films to a tea tree; thirdly, arranging a watering device on the tea tree, wherein the watering device comprises a water storage device and a water-absorption cloth strip, one end of the cloth strip is located at the bottom of the water storage device, and the other end of the cloth strip extends to the top of the top of the root system of the dendrobium. By the wild-simulated symbiosis cultivation, dendrobium survival rate and quality can be increased evidently, and tea garden economic benefits are further increased. The invention further provides a dendrobium planting device to further increase dendrobium planting efficiency.

A kind of insecticide composition in micro emulsion type mainly consists of methoyl 10-30%, abamectin 0.1-2%, solubilizing agent 5-30%, and emulsifying agent 5-20%, water 20-80%. The micro emulsion is a strong absorbable insecticide with high efficiency and low toxicity. It has very good preventing and killing effect to diamondback moth on mustard family, moreover, it is effective to some other destructive insects with stab absorbed type. Acrape absorbed type mouth parts, sucbas aphid, thrips, white louse, mite.

The invention relates to a field rice planting middle-stage herbicide. The field rice planting middle-stage herbicide is prepared from, by weight, 35-45 parts of acetochlor, 35-45 parts of atrazine, 15-19 parts of radix polygoni multiflori, 6-9 parts of fried platycodon roots, 15-18 parts of scorch-fried bombyx batryticatus, 12-14 parts of bulbus fritillariae cirrhosae, 5-7 parts of scorch-fried pericarpium papaveris, 9-14 parts of pear peels, 30-50 parts of fructus momordicae, 50-60 parts of vinegar, 50-56 parts of straw, 10-15 parts of plant ash, 10-20 parts of sugar refinery filter mud, 1-2 parts of probiotics, 10-15 parts of diafenthiuron, 10-15 parts of methomyl, 10-15 parts of pyridaben, 10-15 parts of maibaosu, 60-70 parts of coprinus comatus, 80-90 parts of bean curds, 5-10 parts of ganoderma lucidum, 5-10 parts of salt, 5-10 parts of chicken essence, 5-10 parts of sesame oil, 200-210 parts of Ceylon black tea, 1,000-1,100 parts of boiled water, 100-110 parts of evaporated milk, 55-60 parts of white sugar, 20-25 parts of peanut kernels, 10-15 parts of milkvetch roots and 10-15 parts of radix angelicae sinensis. The prepared herbicide is specially used for removing field rice planting middle-stage weeds, the growth vigor of rice is not affected, the herbicide is dissolved in water and penetrates underground, and nutrition supply to the early-stage rice can be achieved.

The invention discloses a lead compound sulfo-methomyl and a synthesis method thereof and belongs to the technical field of pesticide or novel drug development. The lead compound sulfo-methomyl has a structural formula shown in the following description, wherein in the formula, R represents alkyl, alkenyl or aryl. The invention also discloses a synthesis method of the lead compound sulfo-methomyl. Compared with chlorine, the liquid sulfonyl chloride used in the preparation can be operated easily, is convenient for control, greatly reduces damage to an operator, has no special requirements on production equipment and is suitable for industrial production.

The invention discloses an insecticidal composition. The insecticidal composition contains a plant tissue extract product A and methomyl, wherein the plant tissue extract product A is extracted from amixture of radix sophorae flavescentis dried root, tobacco leaves, azadirachtin seeds and leaves, and pyrethrum flowers, and mixing of the plant tissue extract product A and methomyl has synergisticinteraction for preventing and treating cotton bollworm; the tobacco leaves, the azadirachtin seeds and leaves, and the pyrethrum flowers are fresh plant tissue; and the fresh plant tissue is the plant tissue having a dehydration rate being lower than 5% after departing from growth environment; and the insecticidal composition is suitable for preventing and treating cotton bollworm.

The invention relates to the technical field of wastewater treatment of methomyl and particularly relates to a pretreatment device for methomyl manufacturing wastewater. The pretreatment device comprises an electrical heating reaction vessel, an alkaline hydrolysis tank and an aeration tank, wherein a vertically upwards first pipeline is arranged at the top of the electrical heating reaction vessel; the top of the first pipeline is connected with a condenser pipe; a dropping pipe is arranged at the bottom of the condenser pipe and located just above the alkaline hydrolysis tank; the alkaline hydrolysis tank and the aeration tank are communicated by virtue of a second pipeline; a one-way valve is arranged on the second pipeline; a third pipeline communicated with the interior of the aeration tank is mounted on the aeration tank; a solenoid valve used for controlling the on-off of the third pipeline is arranged on the third pipeline; a bracket is erected at the top of the aeration tank;a stirrer is arranged on the bracket; a stirring shaft of the stirrer stretches into the aeration tank. The pretreatment device disclosed by the invention is capable of realizing automatic alkaline hydrolysis, air aeration and flocculating treatment of the wastewater and completing wastewater pretreatment, and has the advantages of simple operation, low equipment cost, low energy consumption and high practicality.

The invention discloses an immunocolloidal gold test card of methomyl and a preparation method thereof, and relates to the technical field of veterinary drug residue detection of animal-derived food. A test strip in the shell of the test card is composed of a PVC rubber sheet, a sample pat, a colloidal gold conjugate pad, a coating membrane and an absorbent pad. The colloidal gold membrane is a glassfiber membrane containing a methomyl monoclonal antibody. The coating membrane is a nitrocellulose membrane, on which a T line and a C line are arranged. The T line is coated with a methomyl protein conjugate, and the C line is coated with a goat anti-mouse IgG antibody. The test card of the invention is effectively used for rapid detection of methomyl, is convenient and fast, and has accurate results.

The invention discloses compound pesticide for preventing strong drug-resistant mulberry moth, and is prepared with 80 percent of dichlovos, 50 percent of phoxim, surfactant and water in the weight proportions of 1:0.8-1.2:0.8-1.2:1500-2500. The compound pesticide can be sprayed on the surface of mulberry leaves for 45-55 kg per 667 square meters (mu), and the mulberry leaves can be picked off for feeding silkworms in 5-7 days after the spray. The invention and another technical proposal that the compound pesticide is prepared into with 40 percent of methomyl, 50 percent of phoxim, surfactant and water in the weight proportion of 1:0.8-1.2:0.8-1.2:1500-2500. Thus the compound pesticide can be sprayed on the surface of the mulberry leaves for 45-55 kg per 667 square meters (mu), and the mulberry leaves can be picked off for feeding silkworms in 10-12 days after the spray. The invention has simple preparation, broad material source, low price, low toxicity, low residual, no pollution, and convenient usage; can be sprayed on the surface of the mulberry leaves, and the leaves can be picked off for feeding silkworms after a plurality of days. Experiments prove that the preventing effect of the invention can reach above 95 percent, and satisfied prevention effects are obtained after the invention is applied to about 30 hectare mulberry gardens.