62 results about "Chlorpyrifos" patented technology

The application relates to a preparation method of a biosensor. The application relates to a preparation method of a portable pesticide detection biosensor based on acetylcholinesterase (AChE)@poly(allylamine hydrochloride)-hydrogen bond organic framework (PAH-HOF) and application of the biosensor in on-site rapid chlorpyrifos detection, and belongs to the technical field of biosensors. According to the method, AChE is combined with poly(allylamine hydrochloride) (PAH) to change the surface charge and promote self-assembly of the AChE and the hydrogen bond organic framework (HOF), so that an AChE@PAH-HOF composite material with high catalytic activity, high embedding rate and high stability is formed; then the material is integrated into a water-retaining glycerol-sodium alginate hydrogel (G-SA) matrix to construct a disc-shaped sensor. The sensor can be attached to the surface of plants and used for long-term in-situ monitoring of organophosphorus pesticides. In combination with an image processing algorithm, the system realizes accurate tracking of the chlorpyrifos degradation process on the surface of tomato plants, and the detection limit reaches 1 ng / mL. The application provides non-invasive and low-cost technical support for crop health management and sustainable precision agriculture.

This invention discloses a herbicidal composition containing propyzoxystrobin and chlorpyrifos, and its application, belonging to the field of pesticide technology. The active ingredients of this herbicidal composition are propyzoxystrobin and chlorpyrifos, with a weight ratio of propyzoxystrobin to chlorpyrifos of 1:5 to 5:1. Through the synergistic effect of the two active ingredients, this herbicidal composition addresses the seed dormancy and germination characteristics and resistance issues of black nightshade in pumpkin fields, achieving a synergistic control effect of "rapid-acting + long-lasting" and "closed + foliar" action. The control efficiency can reach over 80%, with an optimal ratio reaching as high as 93.1%. It also significantly increases pumpkin yield without adversely affecting pumpkin growth, solving the technical problems of the lack of dedicated control agents for black nightshade in pumpkin fields and the strong resistance of conventional agents in existing technologies.

This application relates to the field of pesticide compositions, specifically disclosing a water-dispersible granule of chlorpyrifos·acetamiprid and its preparation method, comprising the following raw materials in parts by weight: chlorpyrifos 40-50 parts; acetamiprid 15-25 parts; dispersant 8-12 parts; emulsifier 3-7 parts; synergist 0.5-1 part; mineral oil 3-5 parts; anti-caking agent 3-5.5 parts; cassava starch 2-8 parts; activated carbon powder 5.5-8 parts. The preparation method includes the following steps: S1, mixing the raw materials evenly according to the specified ratio; S2, granulating after air jet milling, drying, and sieving to obtain the water-dispersible granule. This application has the effect of inhibiting the migration of acetamiprid in the soil and reducing pesticide pollution of water resources.

This invention discloses a method for cultivating long-branch Buddha's Hand fruit by cutting branches. The method uses a special variety called "Sunshine" and cultivates high-quality long-branch Buddha's Hand fruit by controlling the density of fruiting branches, spraying a 1500-fold dilution of 3% naphthaleneacetic acid during the bud stage to induce finger-shaped splitting, spraying a gibberellin-chlorpyrifos-potassium dihydrogen phosphate compound solution during fruit development to synergistically thicken the fruit stalk, adjusting the branch direction in summer to keep the fingertips pointing upwards, and combining this with midday shading. This method results in a 26.7% increase in fruit stalk diameter, a 6.4% increase in the number of fruits with open fingers, a 100.2% increase in the number of long-branch fruits, a 20.0% reduction in the number of fruits with fruit surface burns, and an 8.8% reduction in the number of fruits that fall off after harvest. The number of fresh-cut long-branch marketable fruits increases by 100.2%, and the long-branch marketable fruit rate reaches over 70%. Overcoming the bottlenecks of traditional cultivation such as weak fruiting ability of long branches, thin and weak fruit stalks that are easy to fall off, and easy damage to the fruit surface, the cultivated long-branch Buddha's Hand fruit has the advantages of being resistant to fruit drop, having a smooth fruit surface, having a well-developed fruit shape, and having suitable branches. It can be directly used for cut flower scenarios such as vase decoration and bouquet matching, creating a new category of Buddha's Hand cut fruit and significantly enhancing its ornamental and economic value.

The invention relates to a preparation method of a biosensor, in particular to a construction method of an acetylcholin esterase (at) amorphous covalent organic framework (AChE (at) aCOFs-DB) photoenzyme integrated biosensor, and belongs to the technical field of biosensors. According to the method, an in-situ growth mineralization strategy is adopted, effective packaging of AChE in aCOFs-DB is achieved, the fluorescence performance of aCOFs is enhanced through a hydrogen bond auxiliary intramolecular rotation limitation design, and meanwhile the structural stability and catalytic activity of AChE are improved; the biosensor with high sensitivity and high selectivity is constructed based on the synergistic effect of fluorescence characteristics and enzyme catalytic performance; the sensor can be used for sensitive detection of organophosphorus pesticides such as chlorpyrifos, and the detection limit can reach a nanogram / milliliter level; the detection principle is as follows: AChE catalyzes a substrate to generate a product, and fluorescence quenching is caused by an inner filtering effect; when the organophosphorus pesticide (such as chlorpyrifos) exists, the AChE activity is inhibited, the catalytic capability is reduced, and a fluorescence signal is recovered, so that quantitative detection of the pesticide is realized; the preparation method is simple and convenient to operate and controllable in structure, is suitable for rapid detection of organophosphorus pesticides in agricultural products and environmental samples, and has a good application prospect.

The application belongs to the field of food safety detection, and particularly relates to a food hazard double-mode detection method based on a three-dimensional folded paper-based microfluidic analysis device; the steps are as follows: step one, preparation of fluorescence-enhanced upconversion nanomaterial; step two, surface biological functionalization of the upconversion nanomaterial; step three, preparation of a double-metal organic framework with peroxidase activity; step four, preparation of a double-metal organic framework modified by a target aptamer; step five, preparation of a nano probe formed by coupling of the upconversion nanomaterial and the double-metal organic framework; step six, preparation of a three-dimensional folded paper-based microfluidic analysis device; step seven, rapid detection of food hazards by using the three-dimensional folded paper-based microfluidic analysis device; taking chlorpyrifos as an example, rapid and accurate detection of the content of chlorpyrifos in food is realized; meanwhile, the three-dimensional folded paper-based microfluidic analysis device with double-mode output has the capability of on-site real-time detection of hazards, and has a good practical prospect.

This invention discloses an aggregation-induced emission (AIE)-metal-organic framework probe, which is prepared by a one-pot solvothermal method using manganese chloride tetrahydrate as the metal center and 1,1,2,2-tetra(4-carboxyphenyl)ethylene as the organic ligand. This invention also discloses a method for detecting chlorpyrifos using a fluorescence sensing system constructed based on the aforementioned AIE-metal-organic framework probe. The AIE-metal-organic framework probe of this invention exhibits low fluorescence background, which reduces background signal interference during chlorpyrifos detection and improves sensitivity. Furthermore, the introduction of enzyme-mediated controllable recognition elements enables specific and sensitive detection of chlorpyrifos, with a detection limit of 3.79 ng / mL. ‑1 The aggregation-induced emission-metal-organic framework probe of this invention exhibits advantages such as high sensitivity, high selectivity, rapid response, stability, and ease of operation in the detection of chlorpyrifos, and has broad application prospects.

The invention provides a preparation method of chlorpyrifos, and relates to the field of chemical synthesis, and the preparation method comprises the following steps: adding 3, 5, 6-trichloropyridine-2-sodium alkoxide, a composite catalyst and distilled water into a reactor; after uniformly stirring, adding 0, 0-diethyl thiophosphoryl chloride to obtain a reaction solution, and adding ammonia water; raising the temperature to 45-55 DEG C, after the reaction is finished, transferring the reaction liquid to a suction filtration device for suction filtration, and separating out a filter cake containing a chlorpyrifos crude product and a mother solution; and washing the filter cake with water, and drying to obtain a chlorpyrifos active compound finished product. According to the preparation method disclosed by the invention, 0, 0-diethyl thiophosphoryl chloride and ammonia water are added at one time, so that the exposure risk of toxic substances is reduced; water is used as a solvent, ammonia water is used as an acid-binding agent, and the problems of organic solvent pollution and strong alkaline wastewater treatment are solved; by controlling the alkalescence environment and reaction conditions, side reaction is inhibited, and the yield and purity of the product both reach 99% or above.

The invention provides a core-shell hydrogel microbead sensing platform as well as a preparation method and application thereof, and belongs to the technical field of synthetic biology and environmental monitoring. The invention provides an engineering sensing microorganism. The engineering sensing microorganism comprises a recombinant vector, the recombinant vector contains a gene expression cassette with target substance response, transformation and report functions; the gene expression cassette comprises a coding gene of a transcription factor ChpR, a coding gene of a fluorescent reporter protein GFP and a coding gene of a chlorpyrifos degrading enzyme, and the gene expression cassette is assembled into a sensing gene line and then introduced into microorganisms to construct the whole-cell biosensor for detecting chlorpyrifos and a metabolite 3, 5, 6-trichloro-2-pyridinol thereof. According to the invention, the chlorpyrifos degradation conversion module is assembled and optimized, and the performance of the sensor is obviously improved. The core-shell hydrogel microbead prepared by the invention can ensure the biological safety and improve the stability of a sensor, and is suitable for high-sensitivity detection of trace chlorpyrifos residues in fruits, vegetables and environmental samples.

The invention relates to a method for detecting pesticide based on a ferriporphyrin modified covalent organic framework nano-enzyme sensing array. According to the invention, ferriporphyrin molecules are loaded on a porous and ordered COFs skeleton, so that excellent peroxidase simulated catalytic activity is realized, H2O2 can be catalyzed to be decomposed to generate reactive oxygen free radicals, and TMB, OPD and ABTS chromogenic reactions are catalyzed. Based on the performance, a three-channel colorimetric sensing array is constructed to detect and distinguish various pesticides such as malathion, profenofos, chlorpyrifos, acephate and dimethoate, and the detection limit is as low as 0.341 nM. After different pesticides are adsorbed to active sites, catalytic reaction can be remarkably inhibited, and specific colorimetric fingerprint signals are generated. Colorimetric data is further combined with a machine learning algorithm, high-accuracy classification and recognition of single pesticides and mixtures thereof are achieved by means of a multilayer sensor, a support vector machine, a random forest and other models, the classification accuracy of an MLP model reaches 90%, ROC curve AUC exceeds 0.97, and the reliability of the detection method is proved.

This invention provides a peach asexual fruit-setting agent and a method for peach asexual fruit setting, belonging to the field of fruit tree cultivation technology. The peach fruit-setting agent is composed of gibberellin GA. 4+7 This fruit-setting agent is formulated with chlorpyrifos, naphthaleneacetic acid, and water, with a mass ratio of 80-150:6-12:4-8. Spraying this agent onto the peach tree canopy during peak flowering enables asexual fruit setting. It is suitable for peach non-dormant off-season cultivation, open-field pollen-free peach varieties, and peach cultivation scenarios without natural insect pollination under greenhouse conditions. Through the scientific formulation and synergistic effect of these three plant growth regulators, it effectively solves the problem of low pollen viability and poor natural fruit setting rate caused by high temperatures during the flowering period in non-dormant peach cultivation, reducing the reliance on artificial pollination in conventional greenhouse peach cultivation and significantly lowering labor costs. Practical application has verified that this invention exhibits excellent fruit setting rate, is easy to operate, and has high safety, effectively improving the overall benefits of the peach planting industry and facilitating large-scale promotion and application.

This invention discloses a composition for prolonging the flowering period of durian and a method for regulating the flowering period of durian. The composition includes: a first spray agent, consisting of the following components in the indicated weight ratios: 5-20g of cytokinin-like substances; 1-5g of gibberellin-like substances; 10-30g of polyamine-like substances; 5-15g of boron source; 100-300g of energy-regulating components; 1-5g of slow-release carrier and penetration-promoting components; and water to 1000g; and a second spray agent, consisting of the following components in the indicated weight ratios: 20-50g of flowering rhythm-regulating components, which are composed of 5-10g of paclobutrazol, 3-8g of uniconazole, and 0.5-2g of chlorpyrifos; 2-5g of slow-release carrier and penetration-promoting components; and water to 1000g. This invention, through the combined design of the first spray agent (flowering promoter) and the second spray agent (flowering control), transforms the initiation of durian flower buds from a "single trigger" to a "controllable, phased trigger," thereby prolonging the flowering period while maintaining or even improving fruit-setting capacity.

This invention provides a high-efficiency seedless grape cultivation technology. Through systematic innovation in seed pretreatment, compound growth regulator formulation, substrate optimization, and precise cultivation management, it overcomes traditional technological bottlenecks. Seed pretreatment employs a quicklime-distilled water activation method combined with wood ash-milk fermentation and ultrasonic-assisted treatment, significantly improving embryo activity and germination rate. The growth regulator is a golden ratio compound of gibberellin and chlorpyrifos, applied to the flower spikes twice, with sodium tungstate added to prolong efficacy, achieving a seedless rate >95% and a 20%-30% increase in berry weight. The substrate uses a multi-stage formulation system, adjusted to pH 5.0-5.5 after low-temperature sterilization, and incorporates 5% biochar to enhance water retention and pollution resistance. Innovative cultivation management includes optimized H-shaped trellis system combined with rain-sheltered cultivation and precise water and fertilizer management, resulting in a stable yield of over 1500 kg / mu, extended shelf life to 15 days, and a cultivation cycle shortened to 2 years before fruiting. This technology comprehensively improves fruit quality and planting efficiency, demonstrating significant application value.

The present application relates to a controllable multi-enzyme cascade AChE-HRP-CHO@HNF composite material preparation and plant wearable sensor application, belong to biosensing, enzyme immobilization material and plant in-situ rapid detection field. The composite material is prepared by biomimetic mineralization and layer-by-layer protein crown assembly, takes enzyme-inorganic hybrid nanoflower as carrier, realizes spatial ordered fixation of choline oxidase (CHO), horseradish peroxidase (HRP) and acetylcholinesterase (AChE) in nanostructure, and forms hierarchical distribution multi-enzyme cascade system. The structure can shorten the transmission distance of intermediate product in cascade reaction, improve the cascade catalytic efficiency and pesticide inhibition response sensitivity. Further embedding it in double network hydrogel, a hydrogel sensing disc suitable for plant surface attachment can be prepared, the hydrogel sensing disc has good flexibility, surface adaptability and storage stability, can be used for on-site visual detection of organophosphorus pesticides such as chlorpyrifos, has the characteristics of simple operation and non-invasive detection.

The invention discloses an FET (Field Effect Transistor) biosensor based on aptamer functionalized carbon nanotubes as well as a preparation method and application of the FET biosensor, and belongs to the technical field of pesticide residue detection. The FET biosensor comprises a chip provided with a conducting channel and an aptamer recognition layer constructed on the chip, according to the chip, a semiconductor single-walled carbon nanotube film sorted by polycarbazole is used as a conducting channel, and gold nanoparticles are synthesized on the surface of the channel in situ; the aptamer recognition layer contains a specific aptamer and is fixed with the nano-gold particles through a gold-sulfur bond. Meanwhile, the invention also provides a preparation method of the FET biosensor. The detection limits of the sensor to chlorpyrifos, isocarbophos and omethoate in a phosphate buffer solution respectively reach 0.51 fM, 0.47 fM and 0.21 fM, the linear detection range is 1 * 10 < M > to 1 * 10 < M >, the adding standard recovery rate is 86-105%, and the variation between the sensors is less than 5%. Specific experiments show that the sensor has no obvious response to non-organophosphorus pesticides.

The invention provides a corn field multi-element compound water dispersible granule and a preparation method thereof, the corn field multi-element compound water dispersible granule is a water dispersible granule prepared by compounding aminopyridine salt, mesotrione and nicosulfuron salt, the control effect is good, the physical and chemical properties are stable, the corn field multi-element compound water dispersible granule is not easy to decompose and deteriorate to generate phytotoxicity, and the suspension rate reaches more than 96%; in the use process, the water dispersible granule only needs to be dispersed once, the use process is simple, and the water dispersible granule is a granular solid, is good in flowability, does not stick to the wall after being poured, and does not remain in a packaging container to form secondary pollution.

The invention relates to a composition for increasing wheat grain weight, a growth regulator, a preparation method and application, and the growth regulator contains the composition with the active ingredients of chlorfenuron, 2, 4-epibrassinolide and an amino acid water-soluble fertilizer. According to the growth regulator for increasing the grain weight of the wheat, provided by the invention, the chlorfenuron, the 2, 4-epibrassinolide and the amino acid water-soluble fertilizer can be specifically combined and proportioned, so that the drought resistance and the photosynthetic efficiency of the wheat in the grain filling period are improved based on a synergistic effect, and grain filling is promoted; in addition, the thousand seed weight and the grain number per spike are remarkably increased, and the grain yield is stabilized; meanwhile, the preparation method has the advantages of safety, non-toxicity, high efficiency and environmental protection, is simple and easy to operate and is convenient for agricultural popularization and application.

This invention provides an emulsifiable concentrate formulation comprising the active ingredients chlorpyrifos, oxazolidinyl acetamiprid, and isoxaflutole, wherein the weight ratio of chlorpyrifos, oxazolidinyl acetamiprid, and isoxaflutole is 1.2:17.8:12. It also includes Silway 241 and Atlox 4916, wherein the mass ratio of Silway 241 to Atlox 4916 is 0.1~0.15:3. The emulsifiable concentrate formulation provided by this invention has strong spreading and adhesion capabilities, which can improve the effective utilization rate of the herbicide solution, exhibit excellent control effects on weeds, and can slow down the development of weed resistance.

The present application relates to a kind of stable chlorpyrifos technical and the application of stabilizer, the content of chlorpyrifos in the chlorpyrifos technical is 92.0-99.5%, chlorpyrifos technical contains stabilizer, stabilizer is p-hydroxyanisole, beta-propionolactone, or the composition consisting of p-hydroxyanisole and beta-propionolactone, wherein the mass content of stabilizer in chlorpyrifos technical is 0.05 ‰-5.0 ‰.The present application uses p-hydroxyanisole, beta-propionolactone or the composition consisting of p-hydroxyanisole and beta-propionolactone as the stabilizer of chlorpyrifos technical solves the stability problem of chlorpyrifos technical, especially can effectively reduce the decomposition of active ingredient in chlorpyrifos technical.

The application relates to a Chryseobacterium sp. with a preservation number of CGMCC No. 25365 and a strain number of CP3; the Chryseobacterium sp. has the characteristics of promoting growth and degrading chlorpyrifos, can be prepared into a bacterial agent, can enhance the degradation of residual chlorpyrifos in rice, can promote the growth of rice, and is applied to the repair of chlorpyrifos residual pollution in a rice planting system; the Chryseobacterium sp. belongs to plant endophytic bacteria, can long-term colonize in rice, can reduce pesticide residues in crops on the premise of not affecting the quality of crops, can guarantee the quality and safety of agricultural products, and can realize green and safe production.

The invention relates to the technical field of sanitary insect killing, in particular to a chlorenthrin microcapsule suspending agent and a preparation method thereof.The chlorenthrin microcapsule suspending agent is prepared by taking chlorenthrin, isopropyl diisocyanate, a nanocrystal composition, dibutyltin dilaurate and deionized water as raw materials. The chlorenthrin microcapsule suspending agent which is easy to operate, capable of controlling release, high in utilization rate, high in encapsulation efficiency and low in toxicity is prepared by adopting an interfacial polymerization and emulsion template method. In the nanocrystal composition, hydroxyl groups of the starch nanocrystal and the cellulose nanocrystal are subjected to esterification reaction with octenylsuccinic acid, electrostatic stability is improved by enhancing repulsive force among particles, emulsifying ability of the starch nanocrystal and the cellulose nanocrystal is enhanced, amphipathy is improved, and the nanocrystal composition has good biocompatibility. The preparation method plays an important role in formation and stability improvement of the microcapsule suspension, and has a wide application prospect compared with the prior art.

The invention provides a method for preventing and treating mango fruit cracking and application thereof, and belongs to the technical field of mango planting. The method comprises the following steps: after mangoes are picked and branches are pruned, wiping and washing trunks by using a mixed solution of Longyle missible oil, Yasiguang and shiny moist; in the flowering period of mangoes, digging holes around mango trees, putting a water-retaining agent, backfilling soil and thoroughly watering; after fruit setting, a mixed solution of chlorpyrifos and Monlii 28 is sprayed to the trunk and the primary main branches; 55-65 days before fruit harvesting, green glume mineral oil and botai shrimp peptide liquid organic fertilizer are sprayed to leaf surfaces and fruit surfaces; 25-35 days before fruit harvesting, green glume mineral oil, Botai shrimp peptide liquid organic fertilizer and monopotassium phosphate are sprayed to leaf surfaces and fruit surfaces. According to the method, the fruit cracking rate of the mangoes can be remarkably reduced, the yield and quality of the mangoes can be improved, and a guarantee is provided for sustainable development of the mango industry.

The present invention relates to the technical field of pesticides, and in particular to an insecticidal composition containing isoflualanam and a use thereof. The insecticidal composition comprises active ingredient A and active ingredient B, wherein the active ingredient A is isoflualanam; and the active ingredient B is selected from one or more of the following compounds: phoxim, chlorpyrifos, triazophos, quinalphos, carbosulfan, diazinon, dichlorvos, and trichlorfon. The composition has the characteristics of reasonable formulation, good insecticidal efficacy, low application cost, reduced application amount, safety to crops, reduced pesticide residues and the like.

Embodiments described herein are directed to methods and systems for treating wastewater or storm water using vermifiltration. The wastewater can come from various sources, such as agricultural sources, municipal and industrial sources, wineries, the dairy industry, and many others. The systems can include vermicomposting beds that are capable of removing high amounts of contaminants, pollutants, and / or toxic substances from wastewater. The wastewater may be applied to vermicomposting beds, for example, by an irrigation system. The irrigation system may provide, for example, improved bed coverage and more even saturation. The vermicomposting beds can remove various harmful substances from the wastewater, such as petroleum products; industrial chemicals; heavy metals (e.g., lead, mercury, cadmium, arsenic); pesticides (e.g., atrazine, chlorpyrifos); and organic compounds (e.g., phenols, polycyclic aromatic hydrocarbons (“PAHs”), polychlorinated biphenyls (“PCBs”)).

The invention discloses a bactericidal composition for preventing and treating gray mold and application thereof, and belongs to the technical field of pesticides. The effective components of the bactericidal composition disclosed by the invention are the flurobixafen and the zhongshengmycin, wherein the mass ratio of the flurobixafen to the zhongshengmycin is (2-9): 1. The Zhongshengmycin and the chlorine fluorine bixafen are compounded for preventing and treating the gray mold, so that the pesticide dosage is reduced during use, the prevention and treatment cost is reduced, the generation of pathogenic bacterium resistance is delayed, and the pollution to the environment is reduced.

The application discloses a fluorescent probe and a preparation method and application thereof, and belongs to the technical field of fluorescent detection and rapid detection of pesticide residues. The fluorescent probe provided by the application takes hydroxyl semi-florocyanine as a fluorescent mother nucleus and acetyl as a recognition site; an intermediate NS-OH is subjected to a substitution reaction with acetyl bromide; the obtained fluorescent probe NS-A can detect acetylcholinesterase and can also be combined with an enzyme inhibition method to detect pesticide residues in traditional Chinese medicinal materials; a standard curve is drawn by a fluorescence spectrum method to quantitatively determine the pesticides, and the result shows that the standard curve error of the pesticide chlorpyrifos is small, the pesticide standard addition recovery rate in the traditional Chinese medicinal materials is between 96.03% and 102.57%, and the detection lower limit of the pesticide can reach the required detection standard; the fluorescent probe has the advantages of low cost, high sensitivity, good selectivity and the like, and has a good application prospect.

The invention relates to a composition for preventing and treating sanitary pests, in particular to a meperfluthrin-containing composition for preventing and treating sanitary pests and application. The composition is prepared from the following components in percentage by weight: 0.1 to 50 percent of meperfluthrin A, 20 to 99.8 percent of C8-C19 lower alkane solvent B and 0.1 to 79.9 percent of solvent C, according to the meperfluthrin composition disclosed by the invention, a non-raw-drug solvent with permeability and natural plant essential oil and the like are added into a meperfluthrin parent drug, so that the drug effect of the meperfluthrin parent drug in actual use is increased, the activity of meperfluthrin is improved, and the quality of the meperfluthrin parent drug is improved.

The invention relates to the technical field of chemical regulation and control of star anise fruit dropping, and discloses a regulator and a method for improving the fruit setting rate of star anise, the regulator comprises 50-400 parts by weight of uniconazole and 5-20 parts by weight of sodium p-chlorophenoxyacetate, and further comprises 1-8 parts by weight of forchlorfenuron. According to the conditioning agent provided by the invention, uniconazole and sodium p-chlorophenoxyacetate have a synergistic effect, fruit drop is reduced by adjusting endogenous hormone balance, and the weight of a single fruit is increased while fruit setting of anise is promoted. The forchlorfenuron is added, so that the effect of improving the fruit setting rate and the weight of a single fruit of the star anise is further enhanced. By applying the regulator with proper concentration in the fruit growth period of the star anise, the fruit setting rate of the star anise is remarkably increased, meanwhile, the weight of a single fruit is also remarkably increased, and the purposes of increasing the yield of the star anise and increasing the planting income are achieved.

The invention provides a continuous preparation method of sulfamonomethoxine, which comprises the following steps: mixing and dissolving sulfamonomethoxine, alkali, methanol and purified water to prepare a mixed solution; wherein the mass ratio of the mixed solution to the purified water is (5-20): 1, injecting the mixed solution into a micro-channel reactor, and reacting at 100-160 DEG C to obtain a reaction solution; and distilling the reaction liquid, adding water for dissolving, adjusting the pH value to 5-6 by using an acid, and filtering to obtain sulfamonomethoxine. Based on the micro-channel reactor, physical dosages of methanol, purified water and the like are controlled at the same time, and the reaction temperature and retention time are controlled, so that the continuous reaction efficiency of sulfamonomethoxine is effectively improved, the reaction time is shortened, the yield is high, the safety risk is low, and the problem of pipeline blockage caused by solid salt generation is solved; impurities can be controlled in a controllable range; the reaction temperature range is wide, and industrial production is facilitated.

The invention belongs to the technical field of pesticides, and particularly relates to the technical field of pesticide compounding, in particular to a synergistic acaricidal composition. The synergistic acaricidal composition comprises an active compound (A), a compound shown in a formula Ia (formula Ia) and at least one active compound (B), and the active compound (B) is selected from the group consisting of chlorfenapyr, phoxim, dimethoate, pyridazinofos, carbosulfan, amitraz, lambda-cyhalothrin, lime sulfur, sulfur, chlorpyrifos, profenofos, lambda-cyhalothrin, triflumizone, Sulfiflumin, Spirobudifen, Mivorisaner, Modoplaner, Tigolaner, Umifoxolaner and Flupentifenox. The weight ratio of the active compound (A) to the active compound (B) is (1: 100)-(100: 1). The synergistic acaricidal composition can effectively improve the prevention and control effect on pest mites, has a remarkable synergistic effect compared with a single agent, and can effectively reduce the use amount, reduce the use cost and reduce the influence on the environment.