131 results about "Thiamethoxam" patented technology

The invention provides thiamethoxam water dispersible granules and a production process thereof, and belongs to the technical field of pesticide preparation. The production process comprises the following steps: modifying methyl methacrylate; preparing an anti-ultraviolet carrier; loading eugenol; and preparing the water dispersible granules. The water dispersible granule is prepared by mixing the uvioresistant carrier loaded with eugenol with thiamethoxam, the dispersing agent, the wetting agent, the disintegrating agent and the binder, when eugenol and thiamethoxam are combined for use, the pest killing effect can be synergistically enhanced, and in addition, eugenol can bypass the resistance mechanism of pests to thiamethoxam, so that the pest killing effect is improved. Even if pests have certain tolerance to neurotoxicity of thiamethoxam, eugenol can still play a role by destroying cell membrane structures and respiratory systems of the pests, so that the resistance of the pests is broken, and the overall insecticidal effect of the prepared water dispersible granule is enhanced.

The invention provides a corn and soybean strip-shaped composite planting method, relates to the technical field of crop cultivation, and aims to improve the land utilization rate and the crop yield. The method comprises the steps of selecting a suitable field, screening seeds, adopting a specific strip-shaped planting mode, accurately sowing depth and time, thinning and final singling seedlings, and managing moisture and fertilization. Specifically, a mode of three rows of corns and two rows of soybeans is adopted, and the row spacing and the seeding depth of the corns and the soybeans are determined according to crop characteristics. Before sowing, seeds are treated by an imidacloprid-thiamethoxam composite seed coating agent, so that the insect resistance is improved. Fertilization is divided into three stages of base fertilizer, topdressing and foliar fertilizer, and crop nutrition balance is ensured. Compared with a traditional planting mode, the yield and quality of the corn and the soybeans can be remarkably improved, good agricultural economic benefits and ecological benefits are achieved, and a new technical path is provided for sustainable development of modern agriculture.

The invention relates to a hybridoma cell strain capable of secreting dextromethorphan monoclonal antibody and application of the hybridoma cell strain, and belongs to the technical field of immunodetection. The monoclonal antibody secreted by the hybridoma cell strain disclosed by the invention has good sensitivity and specificity on dextromethorphan, wherein the IC50 value on the dextromethorphan is 0.162 ng / mL. The monoclonal antibody provided by the invention has no cross reaction on structural analogues of dextromethorphan, such as fentanyl, thilazine, papaverine, morphine and medetomidine, and has good specificity, so that the dextromethorphan with low concentration can be accurately detected.

The invention discloses an application of nitrogen-fixing cyanobacteria in degrading thiamethoxam in water, which comprises the following steps: inoculating nitrogen-fixing cyanobacteria Nostoc sp.PCC7120 into a liquid culture medium, and pre-culturing to a logarithmic phase to obtain a first cyanobacteria solution; inoculating the first algae solution into a new liquid culture medium to obtain a second algae solution; and adding the second algae liquid into the thiamethoxam polluted water body for degradation so as to remove thiamethoxam. The nitrogen-fixing cyanobacteria Nostoc sp.PCC7120 can efficiently degrade and convert thiamethoxam in a water body, secondary pollution is not prone to being generated, the Nostoc sp.PCC7120 serves as the nitrogen-fixing cyanobacteria beneficial to the environment, thiamethoxam pollutants are degraded, meanwhile, a nitrogen source in the polluted environment can be improved through photosynthesis and nitrogen fixation, and the Nostoc sp.PCC7120 is easy to obtain, high in growth and reproduction speed, low in cost and suitable for application and popularization.

The present invention relates to the technical field of drug synthesis, and specifically discloses a method for synthesizing thiamethoxam. The method comprises: a. Reacting 3-methyl-4-nitroimino-1,3,5-oxadiazine with an organic strong base in an organic solvent to form an oxadiazine salt. When the mass content of oxadiazine is lower than 0.5%, an oxadiazine salt reaction solution is obtained; b. Adjusting the pH value of the oxadiazine salt reaction solution to neutral, then adding 2-chloro-5-(chloromethyl)thiazole, and reacting at 50-60°C until the mass content of oxadiazine salt is lower than 0.5% to obtain a thiamethoxam salt reaction solution; c. Adding water to the thiamethoxam salt reaction solution, washing away impurities, cooling, and centrifuging to obtain thiamethoxam. The thiamethoxam synthesis method provided by the present invention no longer uses potassium carbonate, reduces the production cost, reduces the water consumption during product purification, is environmentally friendly, and at the same time avoids the decomposition of 2-chloro-5-(chloromethyl)thiazole under alkaline conditions, improving the reaction yield.

The invention discloses an intelligent slow-release nano-pesticide, a preparation method thereof and application of the intelligent slow-release nano-pesticide in prevention and control of diaphorina citri. The preparation method comprises the following steps: adding a thiamethoxam methanol solution into a 2-methylimidazole solution, ultrasonically dispersing, adding a zinc nitrate solution while stirring, continuously stirring for 1 hour at room temperature, centrifuging, washing, and removing thiamethoxam to obtain THX ZIF-8 nanoparticles; the preparation method comprises the following steps: adding THX-coated ZIF-8 nano-particles into a Tris-HCl buffer solution, stirring and dispersing, adding dopamine hydrochloride, stirring, centrifuging and washing at room temperature, repeating for three times, and drying overnight to obtain THX-coated ZIF-8 / PDA solid powder, namely the intelligent slow-release nano-pesticide. The nano pesticide not only can effectively prevent and treat diaphorina citri, but also can provide a new strategy for comprehensive prevention and control of the citrus liberobacter asiaticum by reducing the ROS level in plants, enhancing the immunity of the plants and reducing proliferation of the liberobacter asiaticum in the citrus plants.

This invention belongs to the field of nanopesticides, and specifically relates to the preparation of suspensions and dispersions of pesticide varieties that are insoluble in water and solvents, with particle sizes smaller than 100 nanometers, especially smaller than 50 nanometers. The thiamethoxam zinc nanoparticle suspension and dispersion described in this invention is formed by diluting and mixing two or three components with water.

The invention relates to the field of pesticide preparations, and discloses a sterilization composition containing tetramycin and Saisentong as well as a preparation method and application of the sterilization composition. Tetramycin and Saisentong serve as active components of the composition, and a dual-structure composite lignin derivative system serves as a functional carrier; the system is composed of high-molecular-weight modified lignosulfonate and specific lignin phenol fragments with low polymerization degree. The high-molecular-weight component forms a physical barrier on the surfaces of active component particles, so that the storage stability and the application safety of the preparation are improved; the low-polymerization-degree component can be degraded by an extracellular enzyme secreted by citrus canker pathogen, so that the targeted release of the active component at the focus is realized. The composition disclosed by the invention effectively reduces the decomposition rate of the active components and the phytotoxicity risk to crops, and meanwhile, the field control effect on the citrus canker is remarkably improved. The composition provides an efficient and safe new choice with a targeting effect for chemical prevention and treatment of citrus canker.

The invention relates to application of limonin as a pesticide synergistic aid in prevention and control of corn pests, which utilizes the characteristic that low-concentration limonin has a remarkable synergistic effect on chemical pesticides, 0.5-4g / mL limonin, 5% chlorantraniliprole and 25% thiamethoxam are mixed for use, so that the lethal medium concentration (LC50) of the limonin to corn borers, corn aphids and rhopalosiphum padi can be remarkably reduced; the insecticidal effect of chlorantraniliprole on corn borer and the insecticidal effect of thiamethoxam on aphid are improved. A field pesticide effect test also shows that the field prevention and control effect of the pesticide on Lepidoptera pests such as ostrinia nubilalis is remarkably improved by mixing 4 g / mL of limonin and 5% of chlorantraniliprole, the actual field dosage of chemical pesticides is reduced, the purposes of pesticide reduction and synergism are achieved, and a positive effect is achieved on comprehensive prevention and control of the field pests.

The invention relates to the technical field of suspending agents, in particular to a suspending agent containing oxine-copper and benziothiazolinone as well as a preparation method and application of the suspending agent. The invention relates to a suspending agent containing oxine-copper and benziothiazolinone, which is prepared from the following raw materials in percentage by mass: 28 to 32 percent of oxine-copper, 4 to 8 percent of benziothiazolinone, 1 to 6 percent of dispersing agent, 1 to 6 percent of wetting dispersant, 1 to 1.5 percent of suspending thixotropic agent, 4 to 8 percent of antifreezing agent, 0.05 to 0.5 percent of preservative, 0.05 to 0.5 percent of thickening agent, 0.1 to 0.5 percent of defoaming agent and the balance of water. The dispersing agent comprises polycarboxylic acid ammonium salt; the invention provides the suspending agent containing oxine-copper and benziothiazolinone, which has the advantages of favorable dispersity, favorable stability and favorable control effect. The suspending agent containing oxine-copper and benziothiazolinone provided by the invention has a good control effect on citrus tree canker and cucumber bacterial angular leaf spot.

Provided herein are methods for generating doubled haploid plants. The methods include obtaining a haploid plant tissue, contacting the haploid plant tissue with a safener compound, contacting the haploid plant tissue with a chromosome doubling agent, and regenerating a doubled haploid plant. The safener compound (e.g., metcamifen) and the chromosome doubling agent (e.g., colchicine) are applied sequentially or simultaneously. Additionally, the methods include further contacting the haploid plant tissue with a vigor response compound (e.g., thiamethoxam) in which the vigor response compound and chromosome doubling agent are applied sequentially or simultaneously.

The invention discloses a dandelion seed coating agent and a preparation method and application thereof.The seed coating agent comprises a growth regulator, a bactericide and an insecticide, the growth regulator comprises 2, 4-epibrassinolide, monopotassium phosphate and gibberellin, the bactericide comprises difenoconazole, metalaxyl-M and fludioxonil, the insecticide comprises abamectin and thiamethoxam, and the insecticide comprises a thiamethoxam aqueous solution. The seed coating agent is prepared from the following effective components in percentage by mass: 1 to 2 percent of 2, 4-epibrassinolide, 1 to 2 percent of monopotassium phosphate, 0 to 0.1 percent of gibberellin, 0.1 to 0.3 percent of difenoconazole, 0.1 to 0.2 percent of metalaxyl-M, 0.1 to 0.2 percent of fludioxonil, 0.1 to 0.3 percent of thiamethoxam, 0.1 to 0.3 percent of abamectin and the balance of water. After seeds are treated by the seed coating, pathogenic bacteria carried by the dandelion seeds can be killed, the activity and disease resistance of the dandelion seeds are remarkably improved, and the vegetative growth yield of dandelions is increased.

The invention relates to the technical field of biocides, pest repellents or attractants containing organic compounds, and particularly discloses a preparation process and application of thiamethoxam water dispersible granules. The water dispersible granule comprises coated thiamethoxam, a dispersing agent, a wetting agent, a disintegrating agent, filler and water. The invention also provides a preparation method of the composition. Compared with the prior art, the prepared water dispersible particle size has the advantages of being good in dispersity, easy to disintegrate, good in stability, good in deinsectization effect and the like.

The application relates to a pesticide composition containing silicon-rich rings and thiamethoxam and application thereof in prevention and treatment of downy mildew, and belongs to the technical field of agricultural pesticides. In the application, heat-sensitive silicon-rich ring raw medicine is coated with a capsule wall material to form microcapsules, so that the chemical stability of the active ingredient in the storage process is effectively improved. The results of potting test show that the branch number, effective branch number and fruiting number of the pepper plants treated with the pesticide composition are significantly higher than those of the single-dose treatment group, which indicates that the pesticide composition can promote the vegetative growth and reproductive growth of the pepper, help to build a high-yield plant type, and improve the yield potential of crops. Field test data show that the prevention and treatment effect of the pesticide composition on the pepper downy mildew reaches 90.2%, which is significantly better than that of the single-dose treatment group. This indicates that the combination of the silicon-rich rings and thiamethoxam plays a synergistic effect in the prevention and treatment of the pepper downy mildew.

The invention relates to the field of insecticide reagents, and provides a thiamethoxam-containing composite suspension insecticide and a preparation method thereof. The pesticide is formed by compounding thiamethoxam-loaded amino acid-based nanoparticles and bimetallic nanoparticles, and polyvinylpyrrolidone, fatty alcohol-polyoxyethylene ether, xanthan gum, glycerol, sodium benzoate, magnesium aluminum silicate and a citric acid-sodium citrate buffer solution are supplemented, so that the slow release property and stability of the pesticide are improved. The thiamethoxam-loaded amino acid-based nanoparticles are prepared through ultrasonic dispersion, nano-micelle synthesis and freeze drying, and the thiamethoxam-loaded bimetallic nanoparticles are obtained through metal polyphenol coordination self-assembly and vacuum drying. The preparation adopts high-shear dispersion and low-speed stirring and curing processes, so that uniform dispersion of nanoparticles is ensured, and the suspension stability is improved. The insecticide prepared by the invention has a better slow-release control effect, the bioavailability of thiamethoxam is improved, the environmental pollution is reduced, and the insecticide is widely applied to prevention and control of agricultural pests.

The application belongs to the technical field of electrochemiluminescence detection, and discloses a preparation method of a thiamethoxam electrochemiluminescence sensor based on Fe / Zn-MOF@C-dots sensitization, which comprises the following steps: C-dots preparation, Fe / Zn-MOF preparation, Fe / Zn-MOF@C-dots preparation, modification of Fe / Zn-MOF@C-dots to the surface of a glassy carbon electrode through chitosan, then combination of a single strand of thiamethoxam DNA aptamer to the surface of the composite nanomaterial as a recognition element through a crosslinking agent, construction of a biosensor capable of recognizing thiamethoxam, electrochemical method detection and electrochemiluminescence method detection. The Fe / Zn-MOF@C-dots composite material is used as an electrochemiluminescence reagent for the first time, and compared with C-dots, the electrochemiluminescence signal of the Fe / Zn-MOF@C-dots is significantly enhanced; at the same time, the sensor uses DNA aptamer as a specific recognition element of the target molecule thiamethoxam, and effectively improves the selection performance of the sensor. The sensor shows significant repeatability, good selectivity and long-term stability, and can be used as an effective means for detecting thiamethoxam residues in agricultural products and origin environments.

The present application provides a fungicidal composition containing pyridinylamide and thiamethoxam, wherein the weight ratio of pyridinylamide to thiamethoxam is 1:200 to 200:1. The fungicidal composition can be prepared into emulsifiable concentrate, suspension concentrate, microemulsion, suspoemulsion, aqueous emulsion, dispersible oil suspension, wettable powder, water dispersible granule, suspension seed coating, etc. by adding agriculturally acceptable adjuvants and / or carriers. The present application also relates to the method and application of the composition for controlling agricultural diseases.

The invention belongs to the technical field of betel nut pest control, and provides an application of an insecticidal composition containing cyantraniliprole and thiamethoxam in control of brontispa longissima, the insecticidal composition comprises pesticide active ingredients, the pesticide active ingredients are cyantraniliprole and thiamethoxam, the mass ratio of cyantraniliprole to thiamethoxam is 1: 5-6: 1, and the pesticide active ingredients are pesticide active ingredients containing cyantraniliprole and thiamethoxam. The composition is used for preventing and controlling brontispa longissima After the two pesticides with the cyantraniliprole and the thiamethoxam as the effective components are compounded and combined, the pesticide composition has a remarkable synergistic interaction effect on brontispa longissima, has outstanding fast-acting property and lasting period of preventing and controlling the brontispa longissima, can effectively reduce the pesticide dosage and frequency, reduces the pesticide use cost, and has a remarkable effect on preventing and controlling the brontispa longissima and preventing and controlling the brontispa longissima. Meanwhile, generation of drug resistance of brontispa longissima on plants can be delayed; compared with an existing single-component insecticide, the insecticidal composition containing cyantraniliprole and thiamethoxam has the advantages that the insecticidal effect is obvious, the synergistic interaction effect is achieved, and the insecticidal composition containing cyantraniliprole and thiamethoxam is safe to crops and worthy of application and popularization in agricultural production.

The present invention belongs to the technical field of pesticides, and specifically relates to an insecticidal composition containing 4-(trifluoromethyl)nicotinamide, and an application thereof. The insecticidal composition includes an active ingredient A and an active ingredient B, wherein the active ingredient A is 4-(trifluoromethyl)nicotinamide, and the active ingredient B is selected from one or more of the following compounds: afidopyropen, formula (I), dimpropyridaz, formula (II), isoflualanam, fipronil, imidacloprid, thiamethoxam, avermectin, acephate and beta-cypermethrin. The composition has features such as reasonable components, good insecticidal effect, low administration cost, reduced application amount, crop safety, and reduced residue.

The invention belongs to the technical field of pesticide fertilizer granules, and particularly relates to pesticide fertilizer granules containing cyantraniliprole and thiamethoxam. The invention relates to a pesticide-fertilizer granule which is prepared from the following components in percentage by mass: 0.1-0.5% of an insecticidal active component, 1-6% of a dispersing agent, 3-8% of a binder, 1-18% of a fertilizer active component, 0.1-0.75% of a synergist and the balance of inert filler, totaling 100%, wherein the insecticidal active component is prepared from cyantraniliprole and thiamethoxam; the synergist is farnesol. The medical fertilizer is composed of an insecticidal active component, a dispersant, a binder, a fertilizer active component, a synergist and an inert filler, and the fertilizer active component can provide nutrients for crop growth and promote crop growth; the synergist can enhance the control effect of the cyantraniliprole and thiamethoxam mixture on pests such as sugarcane two-point borer and the like.

The invention relates to a preparation method of high-yield oxadiazine. Efficient synthesis is realized through cyclic utilization of concentrated mother liquor and collaborative optimization of key reaction parameters. Specifically, methyl nitroguanidine and paraformaldehyde serve as raw materials and react at the temperature of 70-95 DEG C under the catalysis of sulfuric acid, reaction filtrate is collected to serve as mother liquor to be treated into clear liquid water and concentrated mother liquor, the concentrated mother liquor and the clear liquid water in a certain proportion are mechanically applied to replace a pure water solvent, filtrate generated through mechanical application is collected to be continuously treated and mechanically applied, and mother liquor recycling is achieved. According to the method, the product yield is up to 93%, the purity is greater than or equal to 99%, the reaction time can be greatly shortened, the mother liquor is recycled to reduce the generation of waste liquid by 60% or above, and the use of high-risk reagents such as dimethyl sulfate is avoided. The method is suitable for large-scale production of thiamethoxam insecticide intermediates, has significant cost-reducing and synergistic potential, and provides a high-benefit solution for the green pesticide industry.

The utility model relates to thiocyclam technical field of raw materials crushing, and disclose a kind of thiocyclam raw material grinder, including crushing cylinder, the both sides of the crushing cylinder inner chamber are fixedly connected with driving motor by support, the output shaft of driving motor is fixedly connected with transmission rod.The utility model is provided with driving motor, transmission rod, first crushing knife, first grinding block, second crushing knife and second grinding block, can carry out first crushing and then grinding processing to thiocyclam raw material in crushing cylinder, improve thiocyclam raw material crushing effect, improve the uniformity of thiocyclam raw material crushing, by the setting of discharging assembly, thiocyclam raw material after crushing and grinding can be quantitatively discharged, avoid the situation that thiocyclam raw material is discharged more or less, improve the quality when thiocyclam subsequent processing, by the setting of discharging assembly, thiocyclam raw material can be conveniently discharged after quantitative discharge, conveniently enter subsequent process.

The invention belongs to the technical field of insecticides, and particularly relates to a ds-ABC transporter gene for preventing and controlling resistant Frankliniella occidentalis as well as a screening method and application of the ds-ABC transporter gene. The ABC transport protein gene is selected from any one or more of ABCG20, ABCA1, ABCB8, ABCD2 and ABCA5, and the ABC transport protein gene is selected from any one or more of ABCG20, ABCA1, ABCB8, ABCD2 and ABCA5. The screening method comprises the following steps: (1) testing the resistance level of the Frankliniella occidentalis to spinetoram, imidacloprid and thiamethoxam; (2) extracting and purifying the total RNA of the Frankliniella occidentalis population by using a trace total RNA extraction kit, synthesizing cDNA (complementary deoxyribonucleic acid) by taking the RNA as a template, and then carrying out quantitative primer design and gene expression; and (3) carrying out significant analysis on difference analysis of all data through real-time fluorescent quantitative detection, and screening out 5 ds-ABC transporter genes which are subjected to significant up-regulation expression in a resistant population. According to the invention, the key ABC transporter gene for mediating the resistance of the Frankliniella occidentalis to the spinetoram is screened and determined, and a basis is provided for development of a novel anti-resistance insecticide taking the ABC transporter as a target.

The invention discloses an application of high-stress-resistance and high-pathogenicity Steinernemacarporapse XJ-39 nematode in prevention and treatment of Chinese chive maggots in arid and semi-arid regions, and provides a nematode strain S.carporapse XJ-39 which is high in pathogenicity to Chinese chive maggot pests, high in reproductive capacity and good in environmental adaptability at the same time. The corrected death rate of the Chinese chive maggots under the concentration of 150 IJs / larva reaches 75.55%; the number of live propagation nematodes of greater wax moths is 5.24 * 10 < 4 > IJs / larva and 2.10 * 10 < 4 > IJs / g; the death rate is 74.86% after treatment is conducted for 5 h at the temperature of 38 DEG C, and the death rate is only 23.64% after treatment is conducted for 4 h at the NaCl concentration of 10%; after being irradiated by 19W ultraviolet light for 4 hours, the death rate is 43.58%. The S.carpocapsae XJ-39 has good drought stress resistance, has relatively strong survivability under the humidity of a saturated solution of KCl and NaCl, and shows good compatibility with thiamethoxam. In the potting control effect, the control effect of mixed use of nematodes and thiamethoxam reaches 80% or above; after the pesticide is applied in the field, the correction control effect on Chinese chive maggots is 70.25%-60.24%, and the pesticide has fast-acting property and persistent effect. According to the technical scheme provided by the invention, healthy planting, sustainable and high-quality development of the Chinese chives in the arid and semi-arid regions can be further assisted.

The invention discloses a damping-off prevention and treatment agent and a preparation method thereof. The damping-off prevention and treatment agent is prepared from the following raw materials: a composite antibacterial agent, a composite plant immunity inducer, a plant growth regulator, a composite surfactant and the like. According to the prevention and treatment agent provided by the invention, thiamethoxam, azoxystrobin and ipconazole are compounded to serve as a composite antibacterial agent, and under the condition of a small compounding amount, better insecticidal and antibacterial effects can be achieved; the compound plant inducer is added, so that the antioxidant enzyme and defensive enzyme activity of the plant root system is effectively enhanced, and the inhibition on the growth of the seedling root system is relieved, thereby promoting the growth of the seedling root system and enhancing the resistance of rice to damping off; nutrient substances needed by plant growth are supplemented from the plant growth regulator, and plant growth is promoted. According to the prevention and treatment medicament disclosed by the invention, the components are compounded from a plurality of aspects of sterilization and bacterium resistance, enhancement of the resistance of plants to damping off, nutrition supplement and growth promotion, so that the remarkable prevention and treatment and growth promotion effects are achieved.

This utility model discloses a rapid detection kit for thiamethoxam colloidal gold, comprising a main body, a fixing mechanism, an installation mechanism, and a closing mechanism. The fixing mechanism includes a shelf and a reset plate, the installation mechanism includes a test plate and test tubes, and the closing mechanism includes a sealing gasket and a closing cap. With the cooperation of the above mechanisms, this design of the device helps to maintain the orderly storage of the multiple internal components of the kit, reducing the possibility of confusion and erroneous operation. Users can easily find the required test boxes, test tubes, and reagent bottles, improving work efficiency. In addition, this device can fix the components inside the main body, making it convenient to carry the components inside the main body.

The present invention discloses a sulfur-indium-copper nanotube-loaded coal gasification fine slag heterojunction composite catalyst, its preparation method and pesticide degradation application, and relates to related technical fields such as coal-based solid waste recycling, inorganic chemistry, and photocatalytic materials. The present invention uses coal chemical solid waste gasification fine slag as a precursor, adds copper salt, indium salt and thioacetamide, and synthesizes the heterojunction composite catalyst by a one-step hydrothermal method. During the hydrothermal process, coal gasification fine slag nanoparticles are first uniformly deposited on the surface of sulfur-indium-copper nanorods, and then the sulfur-indium-copper nanorods self-assemble to form nanotubes with a length of 5-10 μm and a diameter of 1-2 μm. The catalyst of the present invention has excellent catalytic performance in the photocatalytic degradation reaction of the pesticide thiamethoxam. The present invention utilizes the adsorption capacity of coal gasification fine slag, the rapid photogenerated charge transfer of one-dimensional nanorods and nanotubes, and the mutual synergistic effect of heterogeneous interfaces to promote the separation and transfer of electrons and holes, thereby achieving efficient degradation of the photocatalytic degradation reaction of thiamethoxam.

The invention belongs to the technical field of pesticides, and particularly relates to a smoke agent for preventing and treating melon and vegetable pests and a preparation method and application thereof. After the wormwood, the emamectin benzoate and the thiamethoxam are specifically combined and prepared into the smoke agent, decomposition of organic components in the wormwood is facilitated, and the wormwood, the emamectin benzoate and the thiamethoxam jointly release smoke; when smoke diffuses to the surfaces of crops, effective components such as emamectin benzoate and thiamethoxam can quickly act on nervous systems of pests, death or growth inhibition of the pests is caused by interfering nerve conduction and cell metabolism processes of the pests, and fumigating components of wormwood can generate an inhibition effect on physiological processes of the pests, so that the pest killing effect is improved. The comprehensive control effect of the smoke agent is further enhanced. In addition, the smoke can be in contact with plant surfaces and hidden parts where pests inhabit, and the problem that the pests are difficult to kill in a spraying method is effectively solved. Therefore, the prepared smoke agent has the advantages of high efficiency, environmental protection, economy, simplicity and convenience in operation and the like.

The application discloses a magnesium-doped cobalt-nitrogen co-modified biochar composite material and a preparation method and application thereof, and belongs to the technical field of sewage treatment. The preparation method comprises the following steps: pyrolyzing agricultural waste under an inert atmosphere to obtain biochar; and through an impregnation-pyrolysis process, soluble cobalt salt, magnesium salt and a nitrogen source are combined with the biochar to obtain the magnesium-doped cobalt-nitrogen co-modified biochar composite material. According to the application, the electronic structure of cobalt is regulated through magnesium doping, and a stable Co-N x and Mg-O-Co interface is formed by combining nitrogen coordination, so that the activation capacity of the composite material on peroxymonosulfate is enhanced. When the material activates peroxymonosulfate, thiamethoxam is efficiently degraded through a free radical and non-free radical synergistic path, and the material has the advantages of low metal ion leaching rate, wide pH adaptation range, strong anti-interference capacity and the like, and exhibits excellent degradation performance on neonicotinoid insecticides such as thiamethoxam in a complex water environment.

1. The name of the design product: pesticide packaging bag (thiamethoxam 6). 2. The use of the design product: for pesticide packaging. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: front view. 5. The design product is a flat product, omitting left view, right view, top view, and bottom view.