36results about How to "Effective control of hazards" patented technology

The present invention discloses a duck cultivation method using rice fields. The method comprises the following steps: selecting small and medium-sized ducks with exuberant vitality, wide adaptability and crude feed tolerance; carrying out centralized brooding of ducklings under good breeding management condition; feeding the ducklings with feed until the duck weight reaches 75 g or more; timely dispersing the ducklings to a rice field in an appropriate density in conjunction with rice growth time; and feeding the ducklings with reasonable feed at a specified time point. The duck cultivation method disclosed by the present invention can effectively control the damage of pests in the rice field, promotes ecological balance, controls pesticide pollution, ensures good agricultural environment, promotes rice yield increase, reduces agricultural cost and increases framer income, so that pollution-free and safe rice and duck meat are simultaneously produced in limited space of the rice field.

The invention relates to a multi-layer structure micro-channel mixer, which comprises a base plate and a sealing plate, wherein two sample injection liquid storage chambers, two inlet channels, two groups of fluid distribution channel nets, two groups of process fluid channels, a fluid collision mixing cavity, a fluid reinforced mixing channel and an outlet buffer chamber are arranged on the baseplate in a bilateral symmetry manner and are arranged on the two sides of the fluid collision mixing cavity. Two fluids to be mixed are respectively conveyed to two sample injection liquid storage chambers, respectively enter an inlet channel through the sample injection liquid storage chambers, enter a process fluid channel after being distributed through a multi-stage fluid distribution channel,and form two opposite impinging streams after flowing out of the process fluid channel,and after mixing, vortex or secondary flow is generated under the action that the fluid collides with a bafflingbaffle or an inner component in the mixing cavity, and finally the mixed fluid mixture flows out of the mixer through the outlet buffer chamber. The multi-layer structure micro-channel mixer has theadvantages of wide operation condition range, good mixing effect, high mass transfer coefficient, small pressure drop and low energy consumption.

The invention discloses an integrated low-carbon micro-discharge energy-saving and emission-reduction boiler system. The system comprises a boiler body (1), a steam drum (2), a heat exchanger (3), a preheater (4), an economizer (5), a superheater (6), a steam turbine (7), a generator (8), a secondary smoke combustion device (9), a desulfuration and dust collect unit (10), an air blower (11) and a smoke exhauster (13), wherein the steam drum (2) and the heat exchanger (3) constitute a hot-water heating circulation loop, the economizer (5) is connected with the steam drum (2), and the air blower (11) feeds air to the preheater (4); the steam drum (2) is connected with the superheater (6), and then connected with the steam turbine (7) by a superheated steam pipe (22); the steam turbine (7) is connected with a low-pressure steam pipe (23), and the generator (8) is linked with the steam turbine (7); and the outlet of a gas duct of the boiler body (1) is connected with a smoke pipe (25), and the smoke exhauster (13) is arranged on the smoke pipe (25), and sequentially feeds smoke into the secondary smoke combustion device (9) and the desulfuration and dust collect unit (10) so as to process and discharge the smoke.

The invention relates to a herbicide prepared by binary complex formulation of pendimetalin and oxyfluorfen, and the herbicide is composed of the following ingredients by weight: 33% of the pendimethalin, 5% of the oxyfluorfen, 12% of a synergistic agent, 15% of an emulsifier and 35% of a solvent. The herbicide solves the problems that herbicides in the prior art are not wide in used crops and less in weed killing species, is a high efficient, high-speed contact-killing broad-spectrum herbicide, can control annual weeds, can completely achieve effective control of harm of weed communities in fields by one time of herbicide application, can realize no weed in the whole growth period of crops, is safe to the crops, and has no adverse effects on afterreap crops, the application amount of the herbicide in each mu of field is 24-36g, and the cost of application is reduced by 55 to 42% compared with single use of the pendimethalin and oxyfluorfen.

The invention relates to a pesticide, especially involving a pesticide compound composed of Thiamethoxam phoxim. The invention can be made into creaming agent, and suspend agent or micro-emulsion. The invention has the merits of high efficiency, low toxicity, strong absorption, special control effects on crops soil pests, and can be used as alternative agent of pesticide of high toxic, high residues for controlling soil pests in public existing technology. Seed dressing or watering with the product not only has good control effects for soil pests, but also has better effects for sucking pests on ground, such as aphids of various crops, whiteflies, thrips, beetles and other pests.

A composite insecticide in the form of emulsified oil is prepared from imidacloprid and phoxim. Its advantages are high effect, low poison and strong systemic action.

The invention relates to a composition capable of trapping and killing onionmaggot adult worms, which is prepared from Clothianidin, honey, sodium benzoate and water, as well as a method for utilizing a Clothianidin-containing composition capable of trapping and killing onionmaggot adult worms in preventing and curing onionmaggot of garlic, shallot and onion. In the invention, it is discovered that the composition capable of trapping and killing onionmaggot adult worms, which is prepared by Clothianidin, honey, sodium benzoate and water can trap and kill onionmaggot adult worms massively, reduce the egg laying amount of adult worms and effectively control the onionmaggot harm when being contained in containers or sprayed on blue insect sticky boards and then placed in the garlic, the shallot and the onion fields. The composition can be widely used in preventing and curing various leaf miners for vegetables, and has large application value and remarkable economic and social benefits.

The invention discloses a composite herbicide formulated by 0.5-1.5 portion of pyrazosulfuron-ethyl, an active component, and 7.5-8.5 portion of prometryne according to weight account, which can effectively control weed such as Chinese water chestnut and pondweed, with a herbicidal rate of above 80 per cent. Through measurement of indoor biology, co-toxicity coefficient of the herbicide of the invention is bigger than 100; two single-doses has synergistic interaction effect; dosage for single using the pyrazosulfuron-ethyl is decreased and drug cost is reduce. By field plot experiment, the herbicide of the invention has a stable weeding effect and is safe for growth of rice.

The invention relates to the technical field of pesticides, in particular to a pesticide composition which contains isoproturon, flucarbazone and diflufenican and is used for preventing and killing off gramineous weeds and broadleaf weeds in wheat fields. The pesticide composition is prepared from active ingredients and auxiliary ingredients, the active ingredients comprise isoproturon, flucarbazone and diflufenican, the mass ratio of isoproturon to flucarbazone to diflufenican is 1:(1.2-1.8):(1-2), the mass sum of isoproturon, flucarbazone and diflufenican accounts for 5%-80% of the mass of the composition, and the auxiliaries ingredients comprise at least one of a dispersing agent, an emulsifying agent, a wetting agent, a binding agent, an anti-freezing agent and a thickening agent. According to the pesticide composition containing isoproturon, flucarbazone and diflufenican, a synergistic effect is exerted within a certain proportion range, the prevention and control effect of the composition is obviously improved compared with a single component, the pesticide dosage is reduced, the pesticide use frequency is decreased, the pesticide cost is reduced, the negative influence of pesticide on ecological environment is reduced, and keeping of ecological balance is facilitated.

The invention relates to the field of pesticide herbicides, and particularly discloses a weeding composite containing fentrazamide and pyridate. The weeding composite containing fentrazamide and pyridate comprises the effective components of fentrazamide and pyridate in a weight ratio of 1:89 to 89:1. The weeding composite containing fentrazamide and pyridate has the benefits that firstly, the herbicide controlling spectrum is wide: the weeding composite is suitable for prevention and treatment of various weeds in various crops, in particular in paddy fields, and one-time herbicide application can effectively control the weed harm of the whole growing period of the paddy fields; secondly the weeding composite is safe to rice and afterreap crops: even though the usage amount per mu is five times of proposed usage amount, the pesticide hazard is prevented, so that the herbicide application cost is reduced, and the effect on the afterreap crops is also reduced; thirdly, the antagonistic effect is prevented: the weeding composite has synergistic effect on the herbicidal activity of the weeds, and the weed control synergistic effect is remarkable; and fourthly, the cost is low, and the use is convenient.

The invention relates to a comprehensive preventing and controlling method of bactrocera cucuribitae. The comprehensive preventing and controlling method comprises the following steps of (1) killing juvenile bactrocera cucuribitae; (2) treating a bactrocera cucuribitae source; (3) trapping and killing adult bactrocera cucuribitae; and (4) performing biological preventing and treating, and physical preventing and treating. The comprehensive preventing and controlling method disclosed by the invention is high-efficient, convenient and easy to operate, harm caused by the bactrocera cucuribitae can be effectively controlled, agricultural chemicals are not used, the comprehensive preventing and controlling method is suitable for pollution-free or green-food production of melon type vegetables, the economic value is high, and the environmental protection significance is great.

The invention provides a quick cultivating method of macadamia integrifolia grafting seedlings. The quick cultivating method comprises the steps of selecting one-year-old seeds which are mature from the last ten-day period of September to the first ten-day period of October, of which the diameter is greater than or equal to 2.5cm and which reach physiological maturity for seedling culture; performing sowing in time at the middle ten-day period of the October, cultivating sand bed plantlets, and after 2 euphyllas of the seedlings are aged, performing transplanting in December; at the last ten-day period of the October next year, using the seedlings of which the height reaches 1.2-1.5m and the trunk middle part diameter reaches 1.5cm as root stock grafting seedlings; using scions after 45-60d of band girdle; if many buds are germinated, gradually screening robust 1-2 buds for growth, and erasing the other buds; and after branches and leaves are aged twice, performing coming out of the nursery. Through the adoption of the quick cultivating method disclosed by the invention, the cultivating cycle of the macadamia integrifolia grafting seedlings can be shortened, and quick cultivation of the macadamia integrifolia grafting seedlings can be completed within about 18 months.

The invention relates to a weeding water agent prepared by compounding gramoxone, 2-methyl-4-chloro-phonexyacetic and ammonium hydrogen carbonate, comprising the following components in percentage by weight: 3-10 percent of gramoxone, 2-10 percent of 2-methyl-4-chloro-phonexyacetic, 0.01-0.03 percent of triazole-pyrimidone, 3-5.5 percent of ammonium hydrogen carbonate, 5-15 percent of synergistic agent, 1-3 percent of osmotic agent and the balance of water. The weeding water agent is prepared by the following steps: adding water into the gramoxone and stirring; adding water into the 2-methyl-4-chloro-phonexyacetic and stirring, mixing and stirring the gramoxone solution and the 2-methyl-4-chloro-phonexyacetic solution; adding the triazole-pyrimidone and stirring; adding the ammonium hydrogen carbonate and stirring; adding the synergistic agent and the osmotic agent and stirring; and adding water and stirring, standing, filtering and filling to obtain the finished product. 250-300g of the weeding water agent and 30-40kg of water are mixed and applied to each mu of wheat, cotton, soy beans, maize and mulberry orchards for removing broad leaved weed; after the weeding water agent is applied to cotton crops in Xinjiang region for 4h, intercrescence broad leaved weed represents death symptom, and leaves of perennial malignant weeds, such as chenopodium glaucum, malachium aquaticum and the like are changed into peachblow and purple and are to death after the weeding water agent is applied for 8h. The weeding water agent can simultaneously weed and fertilize. The medicine applying cost is lowered by 8.1-25.6 percent (mu / time) compared with that of separate use of the gramoxone and the 2-methyl-4-chloro-phonexyacetic and lowered by 20.2 percent (mu / time) compared with that of glyphosate.

The invention discloses herbicide prepared by binary compounding of oxyfluoyfen and prometryn and a preparation method thereof. The herbicide consists of the following components in percentage by mass: 3 to 10 percent of oxyfluoyfen, 10 to 40 percent of prometryn, 5 to 15 percent of surfactant, 6 to 20 percent of emulsifier and the balance of solvent. The preparation method comprises the following steps of: mixing and stirring the oxyfluoyfen and the solvent in percentage by mass; mixing the prometryn and the solvent, and mixing and stirring the two mixtures; adding the emulsifier and the surfactant into a reaction kettle together, and stirring the mixture for 10 to 15 minutes; adding the balance of solvent into the mixture, and stirring the mixture for 20 to 30 minutes; and performing standing, filtration, filling and sample analysis to obtain a finished product. The herbicide is an efficient broad-spectrum herbicide. The herbicide is used for pre-emergence and post-emergence after seeds of crops such as tea plants, fruit trees, grapes, tobaccos, cabbages, hot peppers, sunflowers, highland barley, soybean, melons and fruits are sowed; and 40 to 50 grams of herbicide is used in each mu, no weed in the whole growth period of the crops can be completely realized by one-time application, and the application cost of the herbicide is 32.1 to 26.5 percent lower than that of the oxyfluoyfen and the prometryn respectively.

The invention relates to a herbicide prepared by compounding oxyfluorfen and alachlor and a preparation method thereof. The herbicide comprises the following components in percentage by mass: 3 to 10 percent of oxyfluorfen, 10 to 30 percent of alachlor, 5 to 15 percent of synergistic agent, 8 to 20 percent of emulsifying agent and the balance of solvent. The preparation method comprises the following steps of: mixing the oxyfluorfen and the solvent with stirring according to the mass ratio; mixing the alachlor and the solvent with stirring; mixing a mixture of the oxyfluorfen and the solvent and a mixture of the alachlor and the solvent with stirring; adding the emulsifying agent and the synergistic agent into a reaction kettle together and stirring for 10 to 15 minutes; adding the remaining solvent into the reaction kettle and stirring for 20 to 30 minutes; and then standing, filtering, filling, sampling and analyzing to obtain a finished product. The herbicide is an efficient broad-spectrum herbicide and is applied in a period of 4 to 6 leaves of weeds grown among soybeans, peanuts, corns, vegetables and other crops; one-time herbicide application in the dosage of 55 to 65 g / mu can fully ensure no weeds in an entire growth period of the crops; and the cost of the herbicide application is 25.5 to 34.8 percent lower than that of single application of the oxyfluorfen and the alachlor.

The invention discloses an integrated low-carbon micro-discharge energy-saving and emission-reduction boiler system. The system comprises a boiler body (1), a steam drum (2), a heat exchanger (3), a preheater (4), an economizer (5), a superheater (6), a steam turbine (7), a generator (8), a secondary smoke combustion device (9), a desulfuration and dust collect unit (10), an air blower (11) and asmoke exhauster (13), wherein the steam drum (2) and the heat exchanger (3) constitute a hot-water heating circulation loop, the economizer (5) is connected with the steam drum (2), and the air blower (11) feeds air to the preheater (4); the steam drum (2) is connected with the superheater (6), and then connected with the steam turbine (7) by a superheated steam pipe (22); the steam turbine (7) is connected with a low-pressure steam pipe (23), and the generator (8) is linked with the steam turbine (7); and the outlet of a gas duct of the boiler body (1) is connected with a smoke pipe (25), and the smoke exhauster (13) is arranged on the smoke pipe (25), and sequentially feeds smoke into the secondary smoke combustion device (9) and the desulfuration and dust collect unit (10) so as to process and discharge the smoke.

The invention relates to a weedicide prepared from oxyfluorfen and fluazifop-butyl binary combination and a preparation method thereof. The weedicide is prepared from the following ingredients by mass percent: 3 to 10 percent of oxyfluorfen, 8 to 20 percent of fluazifop-butyl, 5 to 15 percent of surface active agent, 6 to 20 percent of emulsifying agent and the balance of solvent. The preparation method comprises the following steps: adding the solvent into the oxyfluorfen to be mixed and stirred according to the mass percent; adding the solvent into the fluazifop-butyl to be mixed and stirred; mixing and stirring the two solution; simultaneously taking and adding the emulsifying agent and the surface active agent into a reaction kettle to be stirred for 10 to 15 minutes; then, adding the balance solvent to be stirred for 20 to 30 minutes; and then, carrying out still standing, filtering, filling and sampling analysis to obtain finished products. The weedicide belongs to a high-efficiency broad-spectrum weedicide used in periods with four to six leaves of crop weeds for tea gardens, fruit tree gardens, grapes, tobacco, cabbages, hot peppers, potatoes, sweet potatoes, soybeans, flax, rubber, forestry nursery and the like, the application quantity is between 45 and 55g per mou, the goal of no crop smothering in the whole growing time of crops can be completely realized through one-setp weedicide application, and the weedicide application cost is 29.8 percent to 30.6 percent lower than that of single application of the oxyfluorfen and the fluazifop-butyl.

The invention relates to a weeding water aqua prepared by binary combination of gramoxone and glyphosate and a preparation method thereof. The weeding water aqua is composed of the following components by mass percent: 3-10% of gramoxone, 2-10% of glyphosate, 0.01-0.3% of trichlorodazole-pyrimidone, 5-15% of synergist, 8-20% of penetrating agent, the balance water. The preparation method includes that: by the mass ratio, the gramoxone is added with water to be stirred; the glyphosate is added with water to be stirred; the two are mixed to be stirred; the trichlorodazole is added into the mixed and stirred gramoxone and glyphosate to be stirred; the penetrating agent and the synergist are added into a kettle to be stirred; then water is added and stirring is carried out; and then standing, filtering, filling and sampling analysis are carried out, thus obtaining the finished product. The invention solves the evil that the existing weed killer only can kill singe weed, provides a quick-acting touch out broad spectrum weed killer, has quick effect in weeding in wheat, corn, peanut, soybean, cotton and mulberry orchard lands, has good production increasing effect, is safe to crop and has no influence on succession crop. Commodity dosage per Mu is 150-250g, application cost is 29.5-40.92% (Mu / turn) lower compared with single use of gramoxone and glyphosate.

The invention discloses a benthiocarb contained herbicide which is composed of, by weight, 2-98% of original benthiocarb and 2-98% of an assistant. The invention further discloses application of the above benthiocarb herbicide in prevention and removal of weeds of direct sowing rice fields. The benthiocarb herbicide applied in after-planting sprouting stage (the same day after planting to four days) of rice can effectively prevent grassy weeds of the after-planting sprouting stage of the rice, cyperus weeds and other broadleaf weeds of the direct sowing rice fields, and the benthiocarb herbicide has the advantages of security, high efficiency, less dosage and convenience in operation, and broad application prospect is achieved.

The invention discloses a fusarium oxysporum tomato neck rot root rot specialization type and application thereof in cultivation of tomato neck rot rood rot disease-resistant varieties. Preservation number of a bacterial strain (bacterial strain Forl-c for short) is China general microbiological culture collection center number 5517 (CGMCC No. 5517). The fusarium oxysporum tomato neck rot root rot specialization type and the application of the fusarium oxysporum tomato neck rot root rot specialization type in cultivation of tomato neck rot rood rot disease-resistant varieties facilitate analysis of pathogenesis of tomato neck rot root rot diseases by tomato neck rot root rot research workers in our country, facilitate research and development of tomato neck rot root rot biocontrol agents,facilitate research of inheritance of resistance and related gene molecular markers of the tomato neck rot root rot diseases, facilitate excavation of disease-resistant genes of the tomato neck rot root rot diseases, facilitate screening and identification of disease-resistant plant materials of the tomato neck rot root rot diseases and other work, lay the foundation for integrated control of the tomato neck rot root rot diseases, have great value for effectively controlling damages of the tomato neck rot root rot diseases, and promote development of disease-resistant breeding of the tomato neck rot root rot diseases.

The invention discloses a weeding water agent prepared by binary compounding of glyphosate and fomesafen and a preparation method thereof. The weeding water agent consists of the following components in percentage by mass: 5 to 18 percent of glyphosate, 8 to 20 percent of fomesafen, 5 to 15 percent of synergist, 8 to 20 percent of penetrating agent and the balance of water. The preparation method comprises the following steps of: adding water into the glyphosate in the mass ratio and stirring; adding water into the fomesafen and stirring; mixing and stirring solution of glyphosate and solution of fomesafen; adding the penetrating agent and the synergist into a reaction kettle and stirring for 10 to 15 minutes; adding water into the reaction kettle and stirring for 20 to 30 minutes; and standing, filtering, filling, sampling and performing sampling analysis so as to obtain a finished product. The weeding water agent overcomes the defect of single weeding of the conventional herbicide, is a high-efficiency, quick-acting and broad-spectrum herbicide and has quick response for killing annual and perennial weeds and a part of broadleaf weeds growing on barren lands such as railways, roads, both sides of main dikes, airports and ridges, application cost 38.4 to 30.8 percent lower than those of separate application of the glyphosate and the fomesafen respectively and better weed preventing and controlling effects than those of separate application of the glyphosate and the fomesafen.

The invention discloses a pesticide composition containing trifluorobenzene pyrimidine and a preparation method and application thereof. Effective components of the composition disclosed by the invention comprise the trifluoro-benzene pyrimidine and the metconazole. A seed treatment suspending agent prepared from the composition can effectively control rice bakanae disease through one-time seed treatment; harm of rice planthoppers in the early stage and the middle stage of rice can be effectively controlled through one-time seed treatment; and the method obviously reduces the use amount and use frequency of pesticides, reduces environmental pollution and agricultural product residues, effectively saves field labor cost, and can be widely applied to the field of rice seed treatment.

The invention provides a method for duck breeding in a rice field, belonging to the field of poultry breeding. The method comprises the following specific steps: (1) land treatment: a step of subjecting a land to simple sterilization, fertility improvement and construction; (2) variety breeding: a step of selecting medium-and-small sized improved duck varieties with exuberant vitality, wide adaptability, crude-feed resistance and stress resistance, and breeding ducklings; (3) intaking training: a step of carrying out intaking training before the ducklings are released into the rice field; and (4) feeding management: a step of regularly feeding ducks, and preparing a highly-nutritional feed. According to the invention, the hazards of harmful organisms in the rice field are effectively controlled; duck breeding in the rice field has good control effects to rice pests like rice-stem borer, rice planthopper and armyworm and to weeds in the rice field; under the action of the ducks, the use of chemical pesticides for prevention and treatment of the pests and the weeds is reduced; ecological balance is promoted; a good production environment is maintained; meanwhile, through activities of the ducks in the rice field, the content of an organic matter in the rice field is greatly improved; the soil fertility is improved for continuing planting crops in the rice field; and a great amount of nutrition is supplemented.

The invention relates to a herbicide prepared by the binary combination of pendimethalin and prometryn and a preparation method thereof. The herbicide comprises the following components in percentage by weight: 10-40 percent of pendimethalin, 5-30 percent of prometryn, 5-15 percent of synergistic agent, 8-20 percent of emulsifying agent and the balance of solvent. A preparation method of the herbicide comprises the following steps of: in a reaction kettle, according to the percentage by weight, mixing and stirring the pendimethalin and the solvent; mixing and stirring the prometryn and the solvent; mixing and stirring the two solutions; adding the emulsifying agent and the synergistic agent into the reaction kettle together to mix for 10-15 minutes; adding the balance of solvent to mix for 20-30 minutes; then, standing; filtering; filling; sampling; analyzing; and preparing a finished product. The herbicide is a high-efficiency broad-spectrum herbicide, is used for soil spray in a preemergence weed mass budding initial period before or after sowing economic crops of cotton, peanuts, an orchard, a mulberry field, a tea garden, tobaccos, and the like, can completely realize the no weed disease of crops in time of infertility when being applied 120-180g per mu, and the applying cost of the herbicide is 19.8-21.3 percent lower than the cost of the solely-applied pendimethalin or the solely-applied prometryn.

The invention belongs to the field of pesticides, and particularly relates to a nematode extract and application of an active compound of the nematode extract as a nematicide. The nematode extract is extracted by taking nematodes as raw materials, and the extract contains a series of compounds with nematicidal activity. One or more of the nematode extract, the active compound, the salt or the ester thereof can be mixed with agriculturally acceptable solvents and / or auxiliary materials to form a nematicidal preparation, and the nematicidal preparation is used as a nematicide for protecting plants against nematode infection or harm.

A multi-level structure micro-channel mixer, comprising a base plate and a sealing plate, the base plate is provided with two sample injection storage chambers, two inlet channels, two sets of liquid storage chambers arranged symmetrically on both sides of the fluid collision mixing chamber. A network of fluid distribution channels, two sets of process fluid channels, a fluid collision mixing chamber, a fluid enhancing mixing channel, and an outlet buffer chamber. The two fluids to be mixed are transported to the two sample injection storage chambers, respectively, and the two fluids enter the inlet channel through the sample injection storage chamber respectively, enter the process fluid channel after being distributed through the multi-stage fluid distribution channel, and flow out of the process fluid channel Two opposite colliding flows are formed. After mixing, a vortex or secondary flow is generated under the action of the fluid colliding with the baffles or internal components in the mixing chamber. The final mixed fluid mixture flows out of the mixer through the outlet buffer chamber. The multi-level structure microchannel mixer of the invention has the advantages of wide operating condition range, good mixing effect, high mass transfer coefficient, small pressure drop and low energy consumption.

The invention discloses a herbicide prepared by binary compounding of oxyfluorfen and trifluralin and a preparation method thereof. The herbicide consists of the following components in percentage by mass: 3 to 10 percent of oxyfluorfen, 10 to 30 percent of trifluralin, 5 to 15 percent of surfactant, 8 to 20 percent of emulsifying agent and the balance of solvent. The preparation method comprisesthe following steps of: in the mass ratio, adding solvent into the oxyfluorfen, and mixing and stirring; adding solvent into the trifluralin, and mixing and stirring; mixing and stirring the two mixtures; adding the emulsifying agent and the surfactant into a reaction kettle, stirring 10 to 15 minutes; adding the rest solvent, and stirring for 20 to 30 minutes; and standing, filtering, filling, and sampling and analyzing to obtain the finished product. The herbicide is a high-efficiency and broad-spectrum herbicide, and is used for tending tea gardens, orchards and young growth and preventingand removing weeds before and after seedlings come out after seeds of crops such as soybean, rape, potato, cotton, cabbage, hot pepper, sunflower and tobacco are sowed. 30 to 40 g of herbicide is used for each mu at one time, and can realize no weeds in the whole growth period of the crops; and the application cost is 56.4 to 44.3 percent lower than that of the oxyfluorfen and the trifluralin.

The invention relates to the field of pesticide herbicides, and particularly discloses a weeding composite containing fentrazamide and pyridate. The weeding composite containing fentrazamide and pyridate comprises the effective components of fentrazamide and pyridate in a weight ratio of 1:89 to 89:1. The weeding composite containing fentrazamide and pyridate has the benefits that firstly, the herbicide controlling spectrum is wide: the weeding composite is suitable for prevention and treatment of various weeds in various crops, in particular in paddy fields, and one-time herbicide application can effectively control the weed harm of the whole growing period of the paddy fields; secondly the weeding composite is safe to rice and afterreap crops: even though the usage amount per mu is five times of proposed usage amount, the pesticide hazard is prevented, so that the herbicide application cost is reduced, and the effect on the afterreap crops is also reduced; thirdly, the antagonistic effect is prevented: the weeding composite has synergistic effect on the herbicidal activity of the weeds, and the weed control synergistic effect is remarkable; and fourthly, the cost is low, and the use is convenient.

The invention relates to a weeding aqueous solution agent prepared by formulation of paraquat and prowess and a preparation method thereof. The weeding aqueous solution agent consists of the following components by weight percentage: 5-18% of paraquat, 8-25% of prowess, 0.01-0.05% of triazole-pyrimidone, 5-15% of synergist, 8-20% of penetrant and the balance of water. The preparation method comprises the following steps of: stirring paraquat with water by the weight percentage; taking prowess and adding water to stir; taking and adding the penetrant and synergist to a reaction kettle to stir for 10-15 minutes; then adding water to stir for 20-30 minutes; then standing, filtering, filling and sampling for analysis to obtain the finished product. The invention overcomes the defect that the prior weeding agent aims at specific weeds, is an efficient and quick-acting broad-spectrum weeding agent and has a quick effect on annual and perennial weeds and part of broadleaf weeds in wasteland, for example, railways, roads, both sides of river diks, airfields and ridges. The administration cost is 17.4-19.8% lower than that of individually administrated paraquat and prowess and the weeding effect is more obvious than the single agent: paraquat and prowess.