24 results about "Phoxim" patented technology

The invention relates to a pesticide residue detection test strip as well as a preparation method and application thereof, in particular to a rapid detection technology based on an enzyme inhibition method and a chitosan non-woven fabric carrier. The test strip can specifically detect organophosphorus and carbamate pesticides such as trichlorfon, malathion and phoxim through the enzyme activity inhibition principle, the detection limit of the pesticides such as phoxim is as low as 0.1 mg / kg, the developing intensity is in negative correlation with the pesticide concentration, and semi-quantitative judgment can be achieved. The preparation process is simple, the chitosan non-woven fabric is adopted as a fixed carrier, the material is environment-friendly and degradable, the enzyme activity recovery rate reaches 90%, the stability is excellent (the enzyme activity recovery rate can be preserved for 60 days at the temperature of 4 DEG C in a dark place), sample pretreatment is not needed in detection operation, a result can be obtained at the normal temperature for 15 min, the stability and repeatability are good, and the problems that a traditional instrument is high in detection cost and long in time consumption are solved; the method has a remarkable basic popularization value.

The invention provides a V2O5-NC nano-enzyme as well as preparation and application thereof. The V2O5-NC nano-enzyme is dark green powder and has a stacked layered structure, the specific surface area is 16-18m < 2 > / g, mesoporous distribution is realized, the average particle size is 20-25nm, and the V2O5-NC nano-enzyme has catalase-like activity. The wide-interlayer-spacing V2O5-NC nano-enzyme based on C-O bond bridging prepared by the invention has relatively good stability, can be prepared on a large scale, is convenient to store, has good affinity to catalytic chromogenic substrates, has high stability, and has universality for the chromogenic reaction of the catalytic chromogenic substrates (TMB, ABTS, DAB and OPD). The V2O5-NC nano-enzyme disclosed by the invention is used for analyzing five organophosphorus pesticides (parathion-methyl, glyphosate, phoxim, methamidophos and chlorpyrifos), has good pesticide recognition capability and interference resistance, and also has the advantages of wide linear range, low detection limit, simplicity and convenience in operation, low detection cost and the like.

The invention relates to the technical field of analytical chemistry, in particular to a method for testing the content of residual chlorothalonil and phoxim in traditional Chinese medicinal materials. Aiming at the problems of experimental error and recovery rate caused by adopting a single detection method in the prior art, the invention provides a detection method based on chemical properties and thermal stability of different to-be-detected substances. The method comprises the following specific steps: grinding a sample, extracting, purifying, detecting phoxim by adopting LC-MSMS (Liquid Chromatography-Mass Spectrometry Mass Spectrometry), and detecting chlorothalonil by adopting GC-MSMS. By optimizing chromatographic conditions and gradient elution procedures, matrix interference can be effectively eliminated, the detection sensitivity, accuracy and efficiency are improved, meanwhile, the analysis time is shortened, and reliable technical support is provided for precise detection of pesticide residues of traditional Chinese medicinal materials.

The invention provides a multifunctional paenibacillus terrae capable of degrading organophosphorus pesticides, resisting diseases and promoting growth, the strain is paenibacillus terrae and is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.30973. The invention further provides a preparation method of the paenibacillus terrae. The strain can degrade organophosphorus pesticides: profenofos, malathion, diazinon, phoxim and fenthion, wherein the degradation effect on the diazinon is the best; the growth and development of meloidogyne incognita can be inhibited, and tomato rhizobium caused by the meloidogyne incognita Fusarium oxysporum can be antagonized, and tomato fusarium wilt caused by the fusarium oxysporum can be prevented and treated; the fertilizer can increase the supply of rapidly available phosphorus in soil and promote the growth of leaf vegetables.

The invention discloses a mixed suspended seed coating agent for preventing diseases and insect pests in a peanut seedling stage, relates to the technical field of peanut suspended seed coating agents, and aims to solve the technical problems that pungent peculiar smell exists, the insecticidal effect is not comprehensive, the effect of improving soil is not achieved, and rooting and germination of peanuts are not facilitated in the prior art. The mixed suspended seed coating comprises the following components in parts by weight: 10-20 parts of fluopyram, 5-8 parts of a fludioxonil suspending agent, 10-20 parts of difenoconazole, 10-20 parts of trifloxystrobin, 3-5 parts of a plant growth regulator, 3-5 parts of trace elements, 5-10 parts of jatropha curcas biodiesel, 30-45 parts of water, 1-5 parts of an auxiliary agent, 1-3 parts of amino-oligosaccharin, 1-3 parts of lentinan and 1-3 parts of harpin protein. According to the mixed suspended seed coating, 1-3 parts of thiophanate methyl, 1-3 parts of sophocarpidine, 1-3 parts of phoxim, 3-5 parts of herba portulacae, 3-5 parts of tobacco shreds, 3-5 parts of sasangua cake and 3-5 parts of dye are included, the pungent peculiar smell can be reduced, various pests can be effectively killed, and meanwhile the sasangua cake can improve the soil structure.

The application discloses a fluorescent colorimetric ionic liquid, a composite ionic probe and application in detection of phoxim, and the functionalized composite ionic probe is successfully synthesized by electrostatic self-assembly of the fluorescent colorimetric ionic liquid and a surfactant, the sensitivity and selectivity of the composite ionic probe in detection of phoxim are effectively improved, and the detection limit is reduced, and the detection limit of the fluorescent method in detection of phoxim can reach 3.0*10 ‑8 M, which is lower than the minimum maximum allowable concentration specified in the national standard. The composite ionic probe can visually and conveniently detect phoxim.

The invention discloses a pesticide composition containing thiocyclam as well as a preparation method and application thereof, and relates to the field of pesticides, the active ingredients of the pesticide composition comprise isotolfenpyrad and thiocyclam, and the weight ratio of isotolfenpyrad to thiocyclam is (0.1: 99)-(99: 0.1), optionally (60: 1)-(1: 30). According to the invention, the isotolfenpyrad and the thiocyclam are reasonably mixed, so that the service life of the isotolfenpyrad is effectively prolonged, the excellent insecticidal effect of the isotolfenpyrad is fully exerted, and meanwhile, the use amount of pesticides is reduced.

The application discloses a COF-based nanoscale enzyme and a preparation method thereof, a COF-based nanoscale enzyme sensor and a detection method of phoxim residues, and relates to the technical field of pesticide detection. The technical scheme in the application designs a COF-based nanoscale enzyme sensor and a method for detecting phoxim residues by using the sensor. The COF-based nanoscale enzyme sensor in the application is synergistically designed by valine functionalization and MnO2 nanoscale enzyme loading, provides rich recognition sites and catalytic active centers, significantly promotes interface electron transfer, and thus amplifies the detection signal. In addition, a machine learning module is introduced in the detection method, which can accurately analyze complex electrochemical signals, effectively distinguish target signals from interference noise, significantly improve the accuracy, reproducibility and anti-interference ability of detection, and provide a universal solution for rapid detection of various samples and multiple targets.

The invention discloses a carrot arched shed covering out-of-season cultivation method. The method comprises the following steps that base fertilizer is sufficiently applied, and fine soil preparation is conducted; seeds are selected and pretreated, and the seeds are directly sown through a seed rope and sown in two rows in one ridge; covering the shed to raise temperature, inserting an arch frame by using bamboo battens across two ridges, covering a small arched shed film, tightly pressing the periphery, and watering to preserve heat and moisture; the temperature in the greenhouse is controlled to be 20-30 DEG C, and heat preservation is mainly performed at night; removing a shed film and an arched shed, and performing intertillage and hilling; watering thoroughly once after sowing and covering a greenhouse, carrying out drip irrigation on mineral source potassium fulvate with the first water, watering for the second time after 15-20 days, and carrying out drip irrigation on phoxim missible oil with the second water; carrying out drip irrigation of a high-nitrogen water-soluble fertilizer along with water after full seedling; after intertilling and ridging, carrying out drip irrigation and dressing of a balanced water-soluble fertilizer; 15 days later, carrot fleshy roots enter a rapid expansion period, a high-potassium water-soluble fertilizer is subjected to drip irrigation and dressing, the land is kept wet and dry, and 15 days later, the high-potassium water-soluble fertilizer is subjected to drip irrigation and dressing in combination with watering; according to the invention, the quantity of seeds required by sowing can be greatly reduced, and the yield is higher during harvesting.

The invention relates to the field of biodegradation, in particular to a pesticide residue degradation composite enzyme based on delftia and a preparation method and equipment thereof.The pesticide residue degradation composite enzyme comprises a smashing cylinder, the bottom of the smashing cylinder penetrates through and is fixedly connected with a feeding cylinder, the bottom of the feeding cylinder is connected with a screening assembly, and supporting blocks are fixedly connected to the four corners of the bottom of the smashing cylinder; a first motor is fixedly connected to the top of the smashing barrel, the output end of the first motor penetrates through the smashing barrel to be fixedly connected with a smashing rod, smashing blades are fixedly connected to the outer portion of the smashing rod, a constant-temperature shaking table is arranged on the right side of the smashing barrel, and a fermentation tank is arranged on the right side of the constant-temperature shaking table; the top of the fermentation tank is fixedly connected with a second motor. The degradation rates of the enzyme for organophosphorus pesticides such as phoxim, dichlorvos and dimethoate with the concentration of 200 mg / L within 48 hours reach 93.8%, 92.5% and 91.2% respectively and are far higher than those of mainstream biodegradable products (72%-80%) in the market, and the degradation period is only 5 days and is shortened by 83% compared with that of a traditional enzyme.

The utility model provides a phoxim tail gas treatment device. The phoxim tail gas treatment device comprises a condensation kettle, an alkaline washing tower, a water seal tank and a tail gas treatment device which are sequentially connected in series, the condensation kettle is also sequentially connected with an acid water storage tank and a neutralizing tower; the alkaline washing towers are connected into a loop through a circulating pump, and the output end of the circulating pump is connected with the alkaline washing towers through a first valve and connected with the neutralizing tower through a second valve; the neutralizing towers are connected into a loop through a second circulating pump. According to the device, the phoxim tail gas is purified and then discharged through cooperative use of the equipment, meanwhile, the arranged neutralizing tower can neutralize waste water generated in the phoxim synthesis process and the tail gas treatment process, and therefore the device has the advantages that the waste liquid treatment cost is reduced, and the device is environmentally friendly. The method overcomes the defects of incomplete absorption and complex subsequent treatment caused by the fact that only water is adopted to absorb the tail gas in a traditional phoxim synthesis tail gas treatment mode.

The invention relates to a preparation method of adjustable and controllable fluorescent carbon dots RhB-Na-CDs and application of the adjustable and controllable fluorescent carbon dots RhB-Na-CDs. Rh B and NaOH are dissolved in tetrahydrofuran or DMF or ethanol or methanol or acetone solvent according to the feeding ratio of nNaOH / nRhB being 1: 1.2-6.5, coarse carbon dots are obtained through the steps of high-temperature reaction, centrifugation, filtration, dialysis, freeze drying and the like, and isocratic dichloromethane and methanol are eluted according to the ratio of V dichloromethane to V methanol being 1-10: 1. The method comprises the following steps: by adopting a thin layer chromatography, collecting yellow fluorescence for elution, and concentrating under vacuum to obtain purified RhB-Na-CDs, and the RhB-Na-CDs can efficiently sensitize orange fluorescence only for phoxim. The Rh B-Na-CDs are used for detecting phoxim residues in vegetables and fruits under the condition that pH is equal to 7, the Rh B-Na-CDs are in a linear relation when the phoxim concentration ranges from 0 micromol / L to 25 micromol / L and the phoxim concentration ranges from 25 micromol / L to 250 micromol / L, the low detection limit (LOD) of the Rh B-Na-CDs to phoxim is 4.486 nmol / L and is far lower than the detection limit required by the national standard GB / T 5009.102-2003, and the Rh B-Na-CDs can be used for rapidly detecting the phoxim residues in the vegetables and fruits.

The invention belongs to the technical field of pesticides, and particularly relates to a phoxim-containing pesticide fertilizer preparation method, which comprises: (1) mixing phoxim, a part of a solvent and a surfactant to obtain an oily mixture A; (2) uniformly mixing the fertilizer component and the filler, and granulating to obtain mixed particles B; and (3) wrapping the mixture A on the surfaces of the mixed particles B by using a wrapping granulation method to form stable particles, thereby obtaining the medical fertilizer. Various components in the medical fertilizer have the effects of preventing and treating underground pests, providing nutrition, promoting growth, enhancing immunity, providing application effects and the like, so that the effects of improving crop growth and preventing and treating underground pests are achieved.

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.

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.

The invention belongs to the technical field of pesticides, and particularly relates to an insecticidal composition containing oxazosulfuron and application of the insecticidal composition. The insecticidal composition comprises an active component A and an active component B. The active component A is oxazosulfuron; and the active ingredient B is selected from one or more of the following compounds: phoxim, chlorpyrifos, triazophos, quinalphos, carbosulfan, diazinon, dichlorvos and dipterex. The composition is reasonable in component, good in insecticidal effect and low in pesticide cost, and has the characteristics that the application amount is reduced, the composition is safe to crops, the pesticide residue is reduced and the like.

The invention discloses a kind of light and simple mechanized potato planting device and method in the field of agricultural planting technology, step one: site selection and land preparation, 3-4 days before sowing, deep ploughing fine soil is carried out using a rotary tiller, and the rotary tillage depth is 25-30cm; step two: prepare seed potatoes, and after cutting, the cut seed potatoes are subjected to seed dressing treatment; step three: prepare base fertilizer, containing phoxim for preventing and treating underground pests; step four: use light and simple potato planting device to carry out compartment opening and ridging, and accurately control sowing depth, when applying base fertilizer, compound fertilizer is spread at intervals between seed potatoes to avoid burning buds and rotten seeds; step five: mid-term management, depending on the seedling condition, 5-7.5kg urea is applied per mu to raise seedlings. The present invention is efficient and practical, reduces the manpower consumption of potato sowing, fertilizing and ridging by the application of machinery, and optimizes the structure of ridging shovel to improve planting efficiency and quality, realizes light simplification and high efficiency of potato planting, reduces labor intensity and planting cost, and improves planting efficiency and quality.

The invention discloses application of bacillus thuringiensis TG5 in promoting tomatoes to resist fusarium oxysporum, and belongs to the technical field of tomato disease resistance. The bacillus thuringiensis TG5 fermentation liquor and phoxim are combined and applied to tomato plants, the tomato disease incidence rate caused by fusarium oxysporum can be reduced, stress faced by the tomato plants can be relieved, and the tomato fruit quality can be improved. Besides, the bacillus thuringiensis TG5 can promote the degradation of phoxim and reduce the residual quantity of phoxim in tomato fruits to 1.18 ug / kg, which is far lower than the maximum residual limit standard of pesticides in food, so that the bacillus thuringiensis TG5 shows a higher safety level. The bacillus thuringiensis TG5 is matched with a traditional chemical pesticide to realize reduction and synergism in use of the chemical pesticide, pesticide residues are also reduced, theoretical and data support is provided for future production, application and popularization, and the bacillus thuringiensis TG5 has important significance on green and sustainable agricultural development.

The invention discloses a green, high-quality and high-efficiency cultivation method for summer sowing silage corn, and the method specifically comprises the following steps: selecting a high-quality, disease-resistant and lodging-resistant grain and feed dual-purpose corn variety; land which is flat in plot, deep in soil layer, loose in soil, suitable for mechanical operation, complete in irrigation facility and convenient in traffic is selected as planting land; the method comprises the following steps: firstly, cleaning up sundries such as weeds and stones on selected land, then deeply plowing the land, spreading farmyard manure, carrying out rotary tillage on the land, and carrying out rotary tillage on the farmyard manure to enable the farmyard manure to enter the soil; planting in wide and narrow rows by adopting a mode of reducing plant spacing and increasing density; a controlled-release fertilizer special for corn and 3% phoxim are selected and mixed to serve as a base fertilizer; the seeds and the pesticide fertilizer are separately loaded into a corn rolling sowing machine for sowing; pre-emergence weeding is carried out after sowing is completed; during the growth period of the corn, thinning, final singling, seedling topdressing and insect prevention are carried out; in the corn field management process, irrigation and drainage need to be made in time, and it is guaranteed that enough water is needed for corn growth; and harvesting the corns in the later stage of dough ripening.

The invention relates to a pesticide composition for preventing and treating grubs and a suspending agent. The pesticide composition comprises a combination of tetratolfenpyrad and at least one of phoxim, bifenthrin and clothianidin. The pesticide composition can generate a synergistic effect when being used for preventing and treating scarab. Furthermore, the vitamin P and / or ferric phosphate can increase the pesticide effect of the pesticide composition in the process of preventing and treating scarab shells. Furthermore, when the pesticide composition is prepared into the suspending agent, the suspending rate of the suspending agent can be improved by using the synthetic plant ester and / or glutamic acid, namely, the stability of the suspending agent is improved.

The metal organic framework material is prepared from the following raw materials: a chloroauric acid compound, sodium citrate, an iron compound, an organic ligand and a solvent, the iron compound comprises an iron salt, and the organic ligand is a benzoic acid compound or a derivative thereof; the iron compound is ferric chloride hexahydrate; the benzoic acid compound comprises a p-benzoic acid compound; the chloroauric acid compound is tetrachloroauric acid; the solvent is N, N-dimethylformamide; the chloroauric acid compound and the sodium citrate form a gold nano-cluster, and the molar ratio of the gold nano-cluster to the iron compound to the organic ligand is (1-5): (3-15): (3-15); the specific metal organic framework material is applied to phoxim detection, has the advantages of high sensitivity, good selectivity, simple detection method, high detection speed and low cost, can realize high-sensitivity analysis and detection of phoxim in animal feed, and has good sensing capability on phoxim.

The application belongs to the field of molecular biology, discloses a kind of MnO2@UiO-66 composite material and its preparation method and application, solve the technical problem that the detection sensitivity and detection range of organic phosphorus compound are relatively narrow.By the ratio fluorescence system of including MnO2@UiO-66 composite material and Ampliflu Red is used for high sensitivity detection of organic phosphorus pesticide and reducing biological molecule.MnO2 Material not only can be used as the fluorescence quenching agent of UiO-66-NH2, can also catalyze Ampliflu Red reagent to generate fluorescent product isophenoxazone, to enhance its fluorescence signal at 590 nm wavelength.When detecting organic phosphorus, the system also includes alkaline phosphatase and L-ascorbic acid-2-sodium phosphate.When the concentration of phoxim is 1×10 ‑6 -9×10 ‑1 mg / mL, fluorescence linear relationship is good, and the detection limit is as low as 0.33×10 ‑6 mg / mL.The system of the application has the characteristics of accuracy, convenience, sensitivity and stability, and can be applied to the detection of organic phosphorus pesticide in complex environment.

The application provides a multifunctional Aenibacillus terrae capable of degrading organophosphorus pesticides and resisting diseases, the strain is Aenibacillus terrae, and is preserved in the China General Microbiological Culture Collection Center with a preservation number of CGMCC No. 30973. The strain can degrade organophosphorus pesticides, including profenofos, malathion, diazinon, phoxim and fenthion, and the degradation effect on diazinon is the best; the strain can inhibit the growth and development of southern root-knot nematodes, and prevent tomato root knot disease caused by the nematodes; the strain can antagonize fusarium oxysporum, and prevent tomato fusarium wilt caused by the fusarium oxysporum; and the strain can increase the supply of soil available phosphorus, and promote the growth of leafy vegetables.

This application relates to the field of pharmaceutical formulation technology, specifically to a phoxim pourable solution and its preparation method. The phoxim pourable solution, by weight, comprises: 6-8 parts of crude phoxim, 0.1-0.2 parts of colorant, and 50-100 parts of solvent; wherein the crude phoxim contains not less than 95% cis-phoxim and has a water content not exceeding 0.2%. The preparation method of the phoxim pourable solution includes the following steps: weighing the components, weighing the crude phoxim, colorant, and solvent according to the labeled amounts; dissolving the components, adding the solvent to a mixing tank, then adding the crude phoxim and stirring to dissolve, followed by adding the colorant and stirring continuously until dissolved; filtering the solution through a 0.45μm filter, sampling and testing, and transferring the solution to a container after passing the test. Using the above technical solution, the prepared phoxim pourable solution can be more stable, facilitating the implementation of its pharmacological effects.