CN105794817B - Mixed herbicide containing flazasulfuron, carfentrazoneethyl and fluroxypramide and application thereof - Google Patents

Abstract

The invention discloses a kind of mixed herbicide containing flazasulfuron, carfentrazoneethyl and fluroxypramide and application thereof, for the herbicide using flazasulfuron, carfentrazoneethyl and fluroxypramide as principle active component, the mass ratio of flazasulfuron, carfentrazoneethyl and fluroxypramide is 0.1~80：0.1~80：0.1~80.Application of the mixed herbicide of the present invention in Kill weeds, the application particularly in Weeds in Turf in various grass family, Cyperaceae and broad leaved weed have remarkable result.Herbicide of the present invention on the premise of drug effect is improved, delays Weed Resistance compared to single agent, and herbicidal spectrum is wide, and the lasting period is long, and has security to lawn.

Description

Mixed herbicide containing flazasulfuron, carfentrazoneethyl and fluroxypramide and application thereof

Technical field

The invention belongs to technical field of pesticide, are related to a kind of herbicide, and in particular to a kind of flazasulfuron, carfentrazoneethyl with The ternary mixing compounding agent of fluroxypramide, the herbicidal composition can be applied to lawn before seedling, postemergence weed control.

Background technology

With increasing substantially for the quickening of Urbanization in China, the promotion of urban afforestation standard and urban size, respectively Kind lawn is come into being, and has triggered the great demand to lawn, Development of Turf has good business opportunity.Ensureing highway, iron The infrastructure such as road, airport, reservoir, riverbank, Hu Di are firm, aesthetic, and lawn is important auxiliary equipment；It is built in city If, in terms of afforestation, lawn can substantially improve living environment, " tropical island effect " that effectively reduces city.Green grassland Area, quality reflect The Surroundings in Cities quality and civilization degree.The city in some developed countries such as U.S., European Union is even more grass Level ground industry is as one of national pillar industry.At present, the Lawn Industry in China has large development, but not yet forms complete integration Industrial system.Lawn plays important in the spiritual civilization level of China's urban construction, living environment beautification and the raising people Role, it not only has very high economic benefit, but also with huge ecological benefits and social benefit.

However, since management is improper, there is quality decline in many lawns, and turfgrass is dead, weedy, pest and disease damage The problems such as occur again and again, the serious use value and landscape value for reducing lawn causes substantial amounts of fund to waste, so research grass Level ground administrative skill, especially Kill weeds technology are the important measures for changing lawn present situation and improving ecological environment.

Artificial weeding, throwing work is big, weeding is not thorough, and has the disadvantage for trampleing on lawn, so as to reduce turf quality.Some places Lawn must not be changed without, it is costly.Chemical weed control saving of work and time, low-cost high-efficiency, later stage weeds occurrence quantity is few, this is people Work uprooting weed cannot than.And chemical weed control also has sealing process, and the weeds newly gone out later want much less.Chemical weed control is to grass Level ground interference is few, and rational environment is provided for Turfgrass Growth.Weeding expense is low, and expense is the l/3-l/4 of labour cost, and one The expense in year is the 1/4-1/5 of labour cost.Labor intensity is low, and a people can spray 7-9 mus of lawns, machine spraying effect daily Rate higher has large area weeding advantage.In order to reduce the economic loss caused by crop smothering, reduce labor intensity, at the same also because For chemical weed control is convenient, quick-acting, control time is long, chemical weed control is gradually received by people.

Flazasulfuron (flazasulfuron) is the sulfonylurea herbicide that the exploitation of industry chemical company is originated in by Japanese stone. Chemical name 1- (4,6- dimethoxypyridin -2- bases) -3- (3- trifluoromethyl -2- pyridine sulfonyl sulfonyls) urea, structure diagram is such as Under：

Acetolactate synthestase (ALS) inhibitor.It is main to inhibit to generate side chain amino acid, leucine, isoleucine and figured silk fabrics The reaction of the predecessor acetolactate synthestase of propylhomoserin.The medicament broad weed-killing spectrum, it is annual in Weeds in Turf that can not only be fabulous Broad-leaved and grassy weed, and perennial broadleaf weed and sedge weed can also be prevented and kill off, such as lady's-grass, barnyard grass, eleusine indica, morning Ripe standing grain, amur foxtail, green bristlegrass, the rhizome of nutgrass flatsedge, kyllinga brevifolia, cyperus iria, difformed galingale herb, alternanthera philoxeroides, Horseweed Herb, white axle Grass, day recklessly appropriate, Tufted Cerastium, creeping oxalis, hairy tare, pale reddish brown mesh place, clover, pale persicaria, sheep hoof, euphorbia maculata, greater plantain, Argy wormwood, sweet vernal grass, green amaranth, shepherd's purse, benbie, common vetch, chickweed etc., it is splendid to kyllinga brevifolia, lady's-grass and rhizome of nutgrass flatsedge preventive effect.

Under normal circumstances, weeds stop growing immediately after processing, the leaf chlorisis that newly sends after absorbing 4-5 days, then by Gradually necrosis and to spread to 20-30 days weeds of entire plant thoroughly withered.The medicament can be absorbed by weeds cauline leaf, and can inhibit soil Suppressing weed seed germination in earth, control time is longer, and the lasting period is about 40 days or more in spring and summer, and autumn and winter is 120 days or more.

Flazasulfuron is that first, China formal registration is special on warm-season turf (Korea lawn grass class and Bermuda grass class) Herbicide.Medicament can be decomposed rapidly after Korea lawn grass and Bermuda grass class turfgrass contact medicament, be converted into innocuous substance, Bu Huiying The normal growth on lawn is rung, it is safe to turfgrass.It is used in lawn rest period, does not interfere with germination and growth in the future. It is widely used in greening lawn, golf course etc..

Carfentrazoneethyl (carfentrazone-ethyl) is the triazolineone herbicide developed by FMC Corp., chemical Title：(RS) -2- chloro- 3 (the chloro- 5- of 2- (4- difluoromethyl -4,5- dihydro -3- methyl -5- oxygen -1H-1,2,4- triazol-1-yls) - 4- fluorophenyls) ethyl propionate, structure diagram is as follows：

Carfentrazoneethyl is triazolineone selectivity herbicide after seedling.Proporphyrinogen oxidase inhibitor, by inhibiting leaf Proporphyrinogen oxidase in green element biosynthetic process and destroy cell membrane, blade is made to dry up rapidly, is dead.Carfentrazoneethyl is being applied Absorbed by plant leaf blade in 15 minutes after medicine, influenced from drenching with rain, when 3-4 is small after weeds occur as soon as poisoning symptom, 2-4 days It is dead.Prevent and kill off broad leaved weed and nutgrass flatsedge, such as clearvers, white dead nettle, Veronica, chickweed, piemarker, red heart lamb's-quarters, blank pipe lead a cow, lamb's-quarters, The weeds such as Amaranthus retroflexus, fruitlet flax, summer cypress, pale persicaria, benbie, black nightshade, sinapsis alba.Especially to clearvers, piemarker, red heart Lamb's-quarters, the blank pipe weeds such as lead a cow have excellent preventive effect, and some weeds for generating antibody to sulfonylurea herbicide have good activity.It pushes away Recommend dosage 20-35g/hm², to water spray processing.

Fluroxypramide (Fluroxypyr) is the pyridine oxycarboxylic acid class herbicide developed by Dow Chemical Co., chemical Title：The fluoro- 2- pyridines fluoroacetic acid of bis- chloro- 6- of 4- amino -3,5-, structure diagram are as follows：

Pyridine fluoroacetic acid class herbicide.With uptake and translocation effect, it is absorbed by plants quickly after medicine, allusion quotation occurs in sensitive crop The reaction of type hormone herbicide, plant deformity, distortion.Temperature, without influence, but influences its drug effect to the final effect of its weeding The speed of performance.Drug effect plays slow generally when temperature is low, stops growing after can making dunsiekte, but not dead immediately, gas Plant is dead quickly after temperature rise.It is wider using optimum period, available for wheat, barley, corn, grape and orchard, pasture, forest farm etc. Broad leaved weed is prevented and kill off on ground, such as clearvers, field bindweed, shepherd's purse, chickweed, benbie, dayflower, volume stem smartweed, Amaranthus retroflexus, black nightshade, nest Dish, field bindweed, small japanese bearbind, weasel hemp nettle, pale persicaria, willow leaf thorn smartweed, alternanthera philoxeroides, humulus grass, elscholtiza, vetch, Descurainia sophia, The weeds such as purslane.

Lawn herbicide is limited by security at present, and herbicide controlling spectrum is also limited, and a kind of herbicide single dose is used alone cannot be complete The full generation for efficiently controlling turf weed, furthermore some herbicides are since the water-soluble big or field lasting period is too long, dosage mistake It is big or dispenser is uneven all be easy to cause residual hazard.Therefore, present invention selection herbicide controlling spectrum is different, the phonetic sulphur of pyridine of advantage and disadvantage complementation Mixture use is made into after three kinds of herbicides of grand, carfentrazoneethyl and fluroxypramide suitably decrement, so both expands herbicide controlling spectrum, hence it is evident that carry High herbicidal effect also avoids generating lawn the possibility of poisoning and residual hazard.

The content of the invention

The object of the present invention is to provide a kind of mixed herbicides containing flazasulfuron, carfentrazoneethyl and fluroxypramide.

It is a further object of the present invention to provide application of the herbicide in lawn before seedling and/or postemergence weed control.

A kind of mixed herbicide containing flazasulfuron, carfentrazoneethyl and fluroxypramide, it is characterised in that the herbicide is phonetic with pyridine Sulphur is grand, carfentrazoneethyl and fluroxypramide are principle active component, the mass ratio of flazasulfuron, carfentrazoneethyl and fluroxypramide for 0.1~ 80：0.1~80：0.1~80.It is preferred that the mass ratio of flazasulfuron, carfentrazoneethyl and fluroxypramide is 1~70：1~60：1~60, The mass ratio of further preferred flazasulfuron, carfentrazoneethyl and fluroxypramide is 1~5：1~60：1~25, most preferably flazasulfuron, The mass ratio of carfentrazoneethyl and fluroxypramide is 1：1：18、3：2：25、5：4：1 or 3：60：2.

In mixed herbicide, the mass percentage of flazasulfuron, carfentrazoneethyl and fluroxypramide three in herbicide For 1~85%, preferred mass percentage composition is 10~80%, and most preferably mass percentage is 10~65%.

In the flazasulfuron of the present invention, the ternary built preparation of carfentrazoneethyl and fluroxypramide, except flazasulfuron, oxazolone grass Outside the active ingredients such as ester and fluroxypramide, can also add the conventional surfactants allowed on pesticidal preparations, thickener, solvent or The auxiliary agents such as solid packing are configured to any one dosage form allowed on pesticide.It is preferred that it is processed into suspending agent, wettable powder, moisture Scattered seed agent, missible oil, microcapsule formulations.

Mixed herbicide of the present invention can be applied in lawn before seedling and/or postemergence weed control, particularly in anti-weeding Being applied in level ground in various grass family, Cyperaceae and broad leaved weed has remarkable result.

The herbicidal composition of the present invention has the following advantages：

1st, activity of weeding is high.Flazasulfuron is inhibitor of acetolactate synthetase.Mainly by root and stem absorb by Conducting tissue is transmitted to separate living tissue, inhibits the biosynthesis of branched-chain amino acid (such as serine, isoleucine).Carfentrazoneethyl is former Oxidation of porphyrinogen enzyme inhibitor destroys cell membrane by inhibiting during chlcrophyll biosynthesis proporphyrinogen oxidase, makes Blade dries up rapidly, is dead.The some weeds for generating antibody to sulfonylurea herbicide have good activity.Fluroxypramide is interior suction Conduction type herbicide after seedling makes sensitive crop the reaction of classical hormones class herbicide, plant deformity, distortion occur.That is, The herbicidal composition of the present invention can kill weeds by three kinds of different approaches, and the herbicide that can greatly improve herbicide is lived Property.

2nd, herbicidal spectrum is wide, and the lasting period is long.After flazasulfuron, carfentrazoneethyl are mixed with fluroxypramide three, action compensating, weeding It composes wider, moreover, because flazasulfuron is mainly effective to broad leaved weed and sedge weed, and pesticide-clay mixture or spraying can be spread；And Carfentrazoneethyl is mainly used for preventing and kill off broad leaved weed and sedge weed, foliage-spray.Fluroxypramide is that pyridines herbicide is mainly used In, foliage-spray invalid to grass family and sedge weed of preventing and kill off broad leaved weed.So the herbicide of the present invention has foliar treatment With the double action in feud, lasting period of medicament is extended.So the herbicide of the present invention has the dual of foliar treatment and feud Effect extends the lasting period of medicament.

3rd, Weed Resistance is delayed.Since weeds easily generate sulfonylurea herbicide resistance, and in the herbicide of the present invention Containing triazolineone herbicide carfentrazoneethyl and pyridines herbicide fluroxypramide, medicament is enable effectively to prevent except anti-sulphonyl The weeds of ureas in addition, reducing resistance weed, extend the service life of medicament.

4th, it is safe.The herbicidal composition of the present invention, being capable of various standing grain in Weeds in Turf applied to Kill weeds Undergraduate course, Cyperaceae and broad leaved weed on the premise of drug effect is improved, have security to lawn.

Therefore, mixed herbicide of the present invention can be applied in the herbicide for preparing Kill weeds, particularly make It is applied in standby Weeds in Turf in the herbicide of various grass family, Cyperaceae and broad leaved weed.

Specific embodiment

Embodiment 1

Flazasulfuron 1%, carfentrazoneethyl 1%, fluroxypramide 18%, alkylphenol polyoxyethylene ether 4%, polyoxyethylene polyoxy third Dilute block compound 5%, thickener 2%, vegetable oil adds to 100%, and being configured to quality percentage according to conventional formulation method contains Measure the suspending agent for 20%.

Embodiment 2

Flazasulfuron 3%, carfentrazoneethyl 2%, fluroxypramide 25%, NN0 (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 9%, alkyl phenol gathers Ethylene oxide ether 5%, sodium lignin sulfonate adds to 100%, and mass percentage is configured to as 30% according to conventional formulation method Suspending agent.

Embodiment 3

Flazasulfuron 5%, carfentrazoneethyl 4%, fluroxypramide 1%, sodium lignin sulfonate 7%, neopelex 5%, ammonium sulfate 5%, diatomite complements to 100%, and it is 10% to be configured to mass percentage according to conventional formulation method Water dispersion granule.

Embodiment 4

Flazasulfuron 3%, carfentrazoneethyl 60%, fluroxypramide 2%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 6%, sulfomethylated lignin Sour sodium 5%, white carbon 9%, kaolin complements to 100%, and being configured to mass percentage according to conventional formulation method is 65% wettable powder.

Embodiment 5

Flazasulfuron 70%, carfentrazoneethyl 5%, fluroxypramide 5%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 5%, sulfomethylated lignin Sour sodium 4%, white carbon 5%, kaolin complements to 100%, and being configured to mass percentage according to conventional formulation method is 80% wettable powder.

Embodiment 6

Flazasulfuron 10%, carfentrazoneethyl 10%, fluroxypramide 60%, NNO (di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate) 9%, alkyl phenol Polyoxyethylene ether 5%, sodium lignin sulfonate adds to 100%, and being configured to mass percentage according to conventional formulation method is 80% missible oil.

Embodiment 7

1), toxicity determination test

Using the preparation in Examples 1 to 4, its co-toxicity coefficient to lawn common weed chickweed is measured.

Test method：The seed of quantitative chickweed is seeded in the disposable paper cup of 9cm respectively, in every glass sow 10~ 15 seeds, are cultivated in illumination box, when 3~6 leaf phase of chickweed, are carried out in crawler crop spray at spraying Reason.Continue to cultivate in greenhouse after processing, respectively processing to the preventive effects of weeds, weighs that each that treated is miscellaneous to routine observation after 30d Careless fresh weight by the method that the nineteen sixties such as Sun Yunpei propose, calculates its toxicity regression curve and co-toxicity coefficient.Co-toxicity coefficient is more than 120, show that three kinds of active principles have synergistic effect, co-toxicity coefficient is less than 120, shows that three kinds of active principles are made with antagonism With.Measurement result is as shown in table 1.

1 toxicity measurement result of table

As can be seen from the above table, the co-toxicity coefficient after three kinds of active principle compoundings is both greater than 100, and it is bright to illustrate that the present invention has Aobvious synergistic effect.

2), field control effectiveness test

Reagent agent：

4 kinds of ternary built herbicides in Examples 1 to 4.

Comparison medicament：

25% flazasulfuron water dispersible granules (commercially available), 40% carfentrazoneethyl dry suspending agent (commercially available), 20% fluroxypramide breast Oily (commercially available).

For trying lawn：Bermuda grass

Bermuda grass was 3~5 leaf phases, was grown fine, robust plant, without other pest and disease damages.

Control object：

The lawns such as rhizoma alismatis, nutgrass flatsedge, apple, bog pondweed, arrowhead, difformed galingale herb, chickweed, lady's-grass, green bristlegrass, barnyard grass, eleusine indica Gesture weeds.

Test method：

According to the area of experimental plot, good various medicaments of precise, and after being watered dilution, using knapsack sprayer, Carry out even spraying, the dedicated Fan spray head of sprinkler selection herbicide.During spraying, it should be noted that it is small that liquid is uniformly sprayed application to experiment Qu Zhong accomplishes no drain spray, the phenomenon that spraying more.

20d, 40d observe weeds death condition, and the activity of weeding of more various medicaments after medicine respectively after experiment.This Outside, the growing state on lawn is also observed in 1~15d after medicine, to investigate whether medicament has poisoning to lawn.

The embodiment of the present invention preparation Herbicidal Testing Trials effect see the table below 2 (20d after medicine) and table 3 (40d after medicine)

2 field control effectiveness test result of table (20d after medicine)

3 field control effectiveness test result of table (40d after medicine)

The present invention be can be seen that from table 2 and table 3 to grassy weed, sedge weed and broad leaved weed all with aobvious The preventive effect of work, it is building performance notable, and also the lasting period is long.

4 medicament of table is to the security survey result on lawn

Lawn in each processing cell is grown fine, and is had no any medicine spot, is illustrated that various medicaments are safe to lawn.

Claims (8)

1. a kind of mixed herbicide containing flazasulfuron, carfentrazoneethyl and fluroxypramide, it is characterised in that the herbicide is with the phonetic sulphur of pyridine Grand, carfentrazoneethyl and fluroxypramide are active ingredient, and the mass ratio of flazasulfuron, carfentrazoneethyl and fluroxypramide is 1:1:18、3:2: 25、5:4:1。

2. mixed herbicide according to claim 1, it is characterised in that flazasulfuron, carfentrazoneethyl and fluroxypramide three exist Mass percentage in herbicide is 1~85%.

3. mixed herbicide according to claim 2, it is characterised in that flazasulfuron, carfentrazoneethyl and fluroxypramide three exist Mass percentage in herbicide is 10~80%.

4. mixed herbicide according to claim 3, it is characterised in that flazasulfuron, carfentrazoneethyl and fluroxypramide three exist Mass percentage in herbicide is 10~65%.

5. mixed herbicide according to claim 1, it is characterised in that it using flazasulfuron, carfentrazoneethyl and fluroxypramide as The auxiliary agent allowed on principle active component and pesticide is configured to any one dosage form.

6. mixed herbicide according to claim 5, it is characterised in that the dosage form for suspending agent, wettable powder, Water dispersible granules, missible oil.

7. application of the mixed herbicide described in claim 1 in lawn before seedling and/or postemergence weed control.

8. mixed herbicide described in claim 1 answering in various grass family, Cyperaceae and broad leaved weed in Weeds in Turf With.