CN101946777B - Method for preventing and treating mikania micrantha by mixing fluroxypyr and ametryn - Google Patents
Method for preventing and treating mikania micrantha by mixing fluroxypyr and ametryn Download PDFInfo
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- CN101946777B CN101946777B CN201010275608.7A CN201010275608A CN101946777B CN 101946777 B CN101946777 B CN 101946777B CN 201010275608 A CN201010275608 A CN 201010275608A CN 101946777 B CN101946777 B CN 101946777B
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Abstract
The invention provides a method for preventing and treating mikania micrantha by mixing fluroxypyr and ametryn, comprising the specific steps as follows: (1) proportion: the proportion by weight of the fluroxypyr to ametrex is 1: 7.5-15; (2) application: respectively dissolving the fluroxypyr and the ametrex, then mixing the two and adding water for spraying in the period from the sprout to the blossom of the mikania micrantha; (3) dosage: 6-8 g/667m2 of fluroxypyr, 60-80 g/667m<2> of ametryn, and 45-75 L of water. The method has remarkable synergistic effect, improves the prevention and treatment effect on the mikania micrantha by 5.25-14.25%, and greatly reduces dosage and lowers the prevention and treatment cost. The application for once can control the occurrence and harm of the mikania micrantha in 12-18 months, decrease the application frequency of the herbicide and realize lasting control. The method can be applied during the period from the seedling to the bud of the mikania micrantha, so that the limitation that the other herbicides only can be applied before the sprout or during the growth of the mikania micrantha is solved. The herbicide formula not only can prevent and treat the mikania micrantha during the growth, but also has better function for the root-sprouted and seed-sprouted mikania micrantha potential population, and realizes the dual purposes of stem leaf treatment and soil sealing treatment.
Description
Technical field
The present invention relates to a kind of technical field of preventing and treating malignant weed Mikania micrantha weed killer herbicide, concrete is the method for a kind of fluroxypyr control mixed with ametryn Mikania micrantha.
Background technology
Mikania micrantha (Mikania micrantha H.B.K) is perennial liane, is to endanger in the world one of 100 kinds of the most serious great pests.Extensively invade and be diffused into the torrid zone, countries and regions, subtropics, becoming " green killer ".This invasive species in recent years in Yunnan Province of China, Guangdong, Shenzhen, Hainan, Hong Kong and Taiwan etc. ground diffusion with break out, cause huge agricultural economy loss, cause that bio-diversity is serious to be lost and the deterioration of the ecosystem.The weed killer herbicide ubiquity control efficiency of producing at present upper application control Mikania micrantha is poor, safety and the shortcoming such as selectivity is low, especially in latter 3-6 month of chemical herbicide application, Mikania micrantha can be recurred rapidly and secondary invasion, causes production above to drop into huge man power and material endlessly and controls.Common weed killer herbicide is difficult to the root of killing Weiganju, and after application, Mikania micrantha can recover rapidly, and multiple non-target plant killed by weed killer herbicide, and serious poisoning is occurred to for plurality of cereals crop, fruit tree and vegetable crop.Up to now, lack desirable chemical herbicide, can not meet the actual needs in production.Therefore, efficiently and lastingly control Mikania micrantha and in agricultural and forestry production, there is important using value and good application prospect.
Fluroxypyr and ametryn, adopted name: (1) fluroxypyr; (2) ametryn
Chemical name: (1) 4-amino-3, the chloro-6 fluoro-2 pyridine fluoroacetic acid of 5-bis-;
(2) 2-methyl mercapto-4-ethylamino-6-isopropylamino-1,3,5-triazines
Chemical structural formula: (download of chemblink website);
Physicochemical property: (1) fluroxypyr sterling is white crystals body, relative molecular mass 255.0,232～233 ℃ of fusing points, in the time of 20 ℃, vapour pressure 3.784 * 10
-6mPa.Relative density 1.09 (24 ℃), the solvability in the time of 20 ℃ in water is 91mg/L, the solvability in other solvent (mg/L): acetone 51.0, methyl alcohol 34.6, ethyl acetate 10.6, isopropyl alcohol 9.2.(2) the former medicine of ametryn is Baise powder, 84～86 ℃ of fusing points (being recrystallized in benzinum), and vapour pressure 0.112mPa/20 ℃, the solvability in the time of 20 ℃ in water is 185mg/L.Be soluble in organic solvent.Stable in micro-acid or alkalescence medium, in strong acid or highly basic medium, be hydrolyzed to the 6-hydroxy derivatives without activity of weeding.
Toxicity: (1) fluroxypyr: rat acute per os LD
50for 2405mg/kg, rabbit is acute through skin LD
50> 5000mg/kg, rat acute sucks LC
50(4h) > 0.296mg/kg.In test dose to animal without teratogenesis, mutagenesis and carcinogenesis, lower to fish and birds toxicity.(2) ametryn: belong to low toxicity herbicide by China's pesticide toxicity grading criteria, rat acute Oral toxicity is LD
50be 673 mgs/kg, rabbit percutaneous toxicity LD
501000 mgs/kg of >, have minimal irritation effect to rabbit skin and eyes.
Effect feature: (1) fluroxypyr is inner sucting conduction type herbicide after seedling.After medicine, be absorbed by plants very soon, make sensitive plant occur the reaction of typical hormone herbicide, plant deformity and distortion.Effective to broad leaved weed, invalid to grass family and nutgrass flatsedge weeds; Be widely used in broad leaved weed.Applicable crops has barley, corn, oat, herbage, paddy rice, jowar, sugarcane, wheat etc.(2) ametryn is selectivity inner-adsorption conduction-type herbicide.Herbicide effect is rapid, is a kind of typical inhibitor of photosynthesis.By the inhibition that photosynthesis electronics is transmitted, cause nitrite accumulation in blade, make hazard of plant dead.To firm sprouting weed control efficacy best, can be by 0～5 centimetre of adsorption by soil, when weed germination is unearthed, touch medicament.
The validity of weed killer herbicide depends on the type, amount of application, formulation of weed killer herbicide, concrete noxious plant and soil etc., owing to there are a large amount of possible influence factors, at present still could not which kind of weed killer herbicide can be all effective to all weeds.In order to improve the usefulness of weed killer herbicide, people use multiple combinations of herbicides.But when two or more weed killer herbicides mix use, there is physics and biological incompatibility in a lot of weed killer herbicides, occurs poor stability, the phenomenon of even confronting with each other.The intractable weeds Mikania micrantha of take is target, filters out mutually non-confrontationally from numerous weed killer herbicides, can obviously strengthen weeding effect, and good stability, and dosage is low, and the weed killer herbicide that safety is good is the important topic in current agricultural science
Summary of the invention
The object of the invention is to for the existing control heterodyne of current chemical control Mikania micrantha and short problem of control period, the method of a kind of fluroxypyr control mixed with ametryn Mikania micrantha is provided, and research and verify period and the using method of its best applications, can reach efficiently, control fast and lastingly generation and the harm of Mikania micrantha.
The method of technical scheme fluroxypyr of the present invention control mixed with ametryn Mikania micrantha, it is characterized in that, concrete steps are as follows: (1) proportioning: the clean weight proportion of fluroxypyr and Ah going out is 1: 7.5～15, (2) using method: Mikania micrantha sprout to before blooming by fluroxypyr and Ah going out only respectively dissolving mix again and be watered spraying, (3) usage amount: fluroxypyr consumption is 6-8g/667m
2; Ametryn consumption is 60-80g/667m
2; Be watered 45-75 and rise spraying.
The concrete consumption of the fluroxypyr described in step (2) and ametryn is: Mikania micrantha Seedling Stage adopts fluroxypyr 6g/667m
2with ametryn 80g/667m
2dissolve again and mix and be watered spraying respectively; Mikania micrantha growth animated period adopts fluroxypyr 8g/667m
2dissolve respectively again and mix and be watered spraying with ametryn 80g/667m2; Mikania micrantha blooms to adopt squaring period fluroxypyr 8g/667m2 and ametryn 60g/667m2 to dissolve respectively to mix again and is watered spraying.
The concrete consumption that fluroxypyr described in step (2) and ametryn are watered is: every mu of seedling stage of Mikania micrantha medicine is watered to 45 liters of sprayings; Every mu of the growth animated period of Mikania micrantha is watered 60 liters of sprayings by medicine; Mikania micrantha blooms and every mu of squaring period medicine is watered to 75 liters of sprayings.
While adopting fluroxypyr and the former medicine of ametryn, adopt respectively spirit solvent to dissolve, and add washing powder or organosilicon as adsorbent, wet spreader.
Be applicable to apply in corn, sugarcane, orchard, rubber and uncultivated area, applying area is away from water conservation district and growing vegetables district.
It is target that this invention be take intractable weeds Mikania micrantha, and by mutually as rule study mixed with ametryn of fluroxypyr, screening is except optimal proportion and crucial application technical research.The present invention is mainly for the existing control heterodyne of current chemical control Mikania micrantha and short problem of control period, a kind of herbicide mixture formula of Mikania micrantha is provided, and research and verify period, concentration, number of times and the method for its best applications, reach efficiently, control fast and lastingly generation and the harm of Mikania micrantha.It is historical that the active ingredient fluroxypyr that this herbicide mixture formula is used and ametryn all have long use, since promoting the use of for a long time, shown good control broad leaved weed effect, but be applied to separately prevent and treat Mikania micrantha and have the low and short feature of control period of effect, and be difficult to large scale application.Fluroxypyr processes as cauline leaf the plant that herbicide sprays is applied to Mikania micrantha, Mikania micrantha plant stops growing rapidly, within 7-15 days, occur that plant goes up withered and yellow on the ground and here withers and lethal, performance effect is feature rapidly, but this weed killer herbicide is poor to Mikania micrantha root kill capability, especially in soil, the seed germination of Mikania micrantha is invalid, so the control period is shorter, and after several weeks, the root of Mikania micrantha and seed are still sprouted in a large number and produced seedling; Ametryn is a weed killer herbicide that has cauline leaf processing and soil treatment effect concurrently, be sprayed at after the blade and plant of Mikania micrantha, can suppress the normal photosynthesis of Mikania micrantha, the seedling of Mikania micrantha is had to good control efficiency, but can not apply preventing and treating perennial Mikania micrantha strain effect extreme difference; This weed killer herbicide can be by 0-5 centimetre of adsorption by soil, Mikania micrantha seed germination and root are sprouted and to produce seedling effect best again, and the lasting period is more than 6 months.The a large amount of research work such as monitoring of the present invention after carrying out for a long time biologicall test, field control effect investigation, dispenser, develop and utilize the two to produce the optimum formula of synergy, by research and the application of best period, concentration, number of times and method, the effect of control Mikania micrantha reaches more than 90%, the seed that can sprout in root that can killing Weiganju and soil.After 12-18 month, monitoring Mikania micrantha does not have recurrence, has realized the effect that persistence is controlled.Result of the test shows, two kinds of obvious synergistic effects of the mixed generation of composition, and control efficiency reaches more than 90%; The formula effect of screening is significantly higher than two kinds of weed killer herbicides and applies separately; Monitoring in 12-18 month after control, the recurrence rate of Mikania micrantha is lower, and cover degree is not for preventing and treating 5% of district.During 2009 and 2010, in Yunnan Province, be used for preventing and treating 1000 mu of demonstration areas.Practice shows, for preventing and treating, Mikania micrantha has advantages of instant effect, effective and the control period is longer in the present invention, has good production application prospect.
The present invention is that a situation arises according to the mutual work mechanism between weed killer herbicide and Mikania micrantha, and research and development are mixed fills a prescription and application technology, compared with prior art, has advantages of following outstanding:
1, the biologicall test being only mixed by fluroxypyr and Ah going out, result shows proportioning of the present invention, has obvious synergistic effect, has improved the control efficiency of Mikania micrantha is improved to 5.25～14.25%.
2, by field test results, the consumption that formula of the present invention is used is starkly lower than independent use fluroxypyr and the clean consumption of Ah going out, thereby reach, produces the upper consumption that reduces weed killer herbicide, lowers cost accounting.
3,, by spraying times and holding effect result of study to control Mikania micrantha, a dispenser of the present invention can be controlled Mikania micrantha in 12-18 generation and the harm of individual month, can reduce the number of times of weed killer herbicide application, realizes lastingly and controlling.
4, it is long that the present invention can be applicable to period of dispenser, in Mikania micrantha Seedling Stage to the squaring period of blooming, all can apply, and having solved other weed killer herbicide can only be before Mikania micrantha sprouts or the limitation that can only apply at growing period.
5, the present invention not only can prevent and treat the Mikania micrantha of growing period, and the potential population of Mikania micrantha of root sprouting and seed germination is had to better effect, realizes the double effects of cauline leaf processing and closed soil treatment
Embodiment
Below by embodiment, the invention will be further described, but this technological invention is not only confined to these embodiment.
1 implements with relatively fluroxypyr and Ah going out do effect and best proportioning biologicall test only mutually
Test material: the Mikania micrantha growing 60 days
Reagent agent: the fluroxypyr that The Dow Agrosciences, LLC. produces, Israel A Gan chemical company ametryn.
Test method: weed killer herbicide 35 processing of application design mixed with different proportion separately, consumption is in Table 1.Potted plant Mikania micrantha, to emerging latter 30 days, is used respectively weed killer herbicide according to each processing of experimental scheme table 1, and with quantitative spray tower spray medicine, during spray medicine, spouting liquid is 10ml/0.198m
2.After medicine, be placed on 22～25 ℃ of greenhouse growths.Not dispenser is treated to blank.Every processing repeats 4 numbers, randomized arrangement in greenhouse.After dispenser 20 days, overground part is cut, weigh immediately, actual inhibiting rate (E)=(contrast fresh weight-processings fresh weight) X 100/ contrasts fresh weight, theoretical inhibiting rate (E
0) by following formula, calculate:
In formula: the inhibiting rate of X-fluroxypyr (%); The inhibiting rate of Y-ametryn (%);
Actual inhibiting rate (%) after E-fluroxypyr is mixed with ametryn;
Make mutually effect analysis: with actual inhibiting rate (E) and theoretical inhibiting rate (E
0) relatively, actual inhibiting rate (E) and theoretical inhibiting rate (E
0) differ ± 5% to take interior be addition; Actual inhibiting rate (E) is greater than theoretical inhibiting rate (E
0) 5% for synergistic effect; And actual inhibiting rate (E) is less than theoretical inhibiting rate (E
0)-5% is antagonism.
Result of the test: by table 1 interpretation of result, after fluroxypyr is mixed with ametryn different proportion, in 35 processing, 11 formula performance synergistic effect: E-E
0> 5%, is synergistic effect proportioning; Wherein the minimum mixed ratio of fluroxypyr and ametryn is 1: 7.5, i.e. 8 grams/hm of fluroxypyr
260 grams/hm of+ametryn
2, maximum mixed ratio is 1: 15, i.e. 4 grams/hm of fluroxypyr
260 grams/hm of+ametryn
2.In 11 synergy proportionings, when fluroxypyr consumption is less than 6 grams/hm
2, be mixed into 60 grams of ametryn ametryns or 80/hm
2although, producing synergistic effect, control efficiency is all poor, (E) lower than 70%; When fluroxypyr consumption reaches 10 grams/hm
2, be mixed into 60 grams of ametryns or 80/hm
2although control efficiency is better, (E) higher than 90%, consumption is high, and control efficiency improves not remarkable with the increase of consumption; But when fluroxypyr consumption is 6～8 grams/hm
2, be mixed into ametryn 60～80/hm
2, produce maximum synergistic effect, and the effect of control Mikania micrantha is better, (E) reaches more than 90%, is therefore the mixed scope of two kinds of weed killer herbicides.While adopting fluroxypyr and the former medicine of ametryn, adopt respectively spirit solvent to dissolve, also can add washing powder or organosilicon as adsorbent, wet spreader.
Table 1 result data is visible, but the mixed ratio of two kinds of weed killer herbicides is less than 1: 7.5 or is greater than 1: 15, and two kinds of weed killer herbicides show addition or antagonism.25 mixed formulas of fluroxypyr and ametryn are measured, synergy maximum be fluroxypyr 6g+ ametryn 80g/667m
2formula, fluroxypyr 8g+ ametryn 80g/667m
2formula, fluroxypyr 8g+ ametryn 60g/667m
2formula, synergy (E-E
0) be respectively 14.25%, 10.96% and 8.11%.Result shows: herbicide mixture formula of the present invention, fluroxypyr and ametryn mixed ratio are 1: 7.5～15, have synergistic effect, significantly improve the control efficiency to Mikania micrantha tool, the advantage that reduces consumption and save production cost.
The mutual effect analysis of table 1 fluroxypyr and 2,4-D
Note: mark " S " be synergistic effect (Synergistic effect); " A " addition (Addition effect); " R " is antagonism (Antagonistic effect).
Under 2 different amounts, prevent and treat the sweet effect comparison of common vetch
Test material: grow to the 60th day, the Mikania micrantha in growth animated period
Reagent agent: herbicide mixture formula of the present invention: fluroxypyr 8g ai/667m
2+ ametryn 80g ai/667m
2, fluroxypyr: ametryn=1: 10,80% ametryn that its mamaplasty You Yu Israel A Gan chemical company is produced containing fluroxypyr 20% that The Dow Agrosciences, LLC. produces.
Test method: adopt the different amounts of invention herbicide mixture formula to test, and contrast with ametryn with the fluroxypyr of independent use.The concrete formulation rate of each group test (calculating by active ingredient) is as follows:
The 1-1 of system herbicide mixture formula of the present invention: fluroxypyr: ametryn=1: 10,88g ai/667m
2;
The 1-2 of system herbicide mixture formula of the present invention: fluroxypyr: ametryn=1: 10,44g ai/667m
2;
The 1-3 of system herbicide mixture formula of the present invention: fluroxypyr: ametryn=1: 10,66g ai/667m
2;
The 1-4 of system herbicide mixture formula of the present invention: fluroxypyr: ametryn=1: 10,88g ai/667m
2;
The 1-5 of system herbicide mixture formula of the present invention: fluroxypyr: ametryn=1: 10,132g ai/667m
2;
The 2-1 of system fluroxypyr 4g ai/667m
2;
The 2-2 of system fluroxypyr 6g ai/667m
2;
The 2-3 of system fluroxypyr 8g ai/667m
2;
The 2-4 of system fluroxypyr 10g ai/667m
2;
The 2-5 of system fluroxypyr 12g ai/667m
2;
The 3-1 of system ametryn 40g ai/667m
2;
The 3-2 of system ametryn 60g ai/667m
2;
The 3-3 of system ametryn 80g ai/667m
2;
The 3-4 of system ametryn 100g ai/667m
2;
The 3-5 of system ametryn 120g ai/667m
2;
Experimental scheme: warm indoor pot Mikania micrantha, emerge latter 60 days, to press after institute of test processing system consumption is calculated as every square metre and be watered even spraying, water consumption is by every mu of 60 kilograms of calculating.Every processing 4 strains, random district group is arranged.The plant fresh weight of investigation survival in 20 days after medicine, processes blank comparison, the fresh weight of fresh weight * 100/ control treatment of the fresh weight-processing of inhibiting rate (%)=control treatment with spray clear water.Convert treatment dosage to concentration logarithm, convert inhibiting rate to probit value.Then in the linear regression of calculating concentration logarithm-inhibition probit value, according to regression equation, calculate each medicament Mikania micrantha growth fresh weight is suppressed to LD
50, inhibiting rate reaches 50% consumption and LD
90inhibiting rate reaches 90% consumption.With following formula, calculate relative virus force:
The ED of the mixed formula control of relative virus force=basis Mikania micrantha
90the ED of/weed killer herbicide fluroxypyr or ametryn
90
Result of the test: 3 kinds of weed killer herbicide various dose levels to the inhibition of Mikania micrantha in Table 2.The dosage X of herbicide mixture formula of the present invention, fluroxypyr and ametryn that statistical analysis obtains and the virulence regression equation of growth inhibition ratio (Y) are respectively: Y=0.7725x+12.447, Y=7.1895x+0.992 and Y=0.5974x+2.53.
Result of the test shows, herbicide mixture formula of the present invention is used at Mikania micrantha growth animated period, has the effect of efficient control, LD
50and LD
90be respectively 48.61g ai/hm
2with 70.84g ai/hm
2.Under this experimental condition, with LD
90calculate, its activity is far above producing upper conventional ametryn; Although the consumption of identical control efficiency (90%) is high compared with fluroxypyr, application cost is lower than fluroxypyr; With LD
90calculate, the activity of fluroxypyr and green bristlegrass is respectively 5.72 times of composition activity of the present invention and 0.48 times (table 2).
The relative virus force of table 2 fluroxypyr formula mixed with ametryn (1: 10) to Mikania micrantha biological activity determination
The control efficiency comparison of 3 different insecticide-applying way to Mikania micrantha
Reagent agent: herbicide mixture formula of the present invention: fluroxypyr 6g+ ametryn 80g/667m
2, fluroxypyr: ametryn=1: 13.3, fluroxypyr 8g+ ametryn 80g/667m
2, fluroxypyr: ametryn=1: 10.0, fluroxypyr 8g+ ametryn 60g/667m
2, fluroxypyr: ametryn=1: 7.5; 80% ametryn that its mamaplasty You Yu Israel A Gan chemical company is produced containing fluroxypyr 20% that The Dow Agrosciences, LLC. produces.
Test is processed: the concrete formulation rate of each group test is calculated as follows by active ingredient:
The 1-1 of system herbicide mixture formula of the present invention: fluroxypyr: ametryn=1: 13.3,86g ai/667m
2;
The 1-2 of system herbicide mixture formula of the present invention: fluroxypyr: ametryn=1: 10.0,88g ai/667m
2;
The 1-3 of system herbicide mixture formula of the present invention: fluroxypyr: ametryn=1: 7.5,68g ai/667m
2;
The 2-1 of system fluroxypyr is produced and is recommended consumption: 12g ai/667m
2;
The 3-1 of system ametryn is produced and is recommended consumption: 120g ai/667m
2;
Experimental scheme and method: test in 2010 Nian Yunnan Agriculatural Academy greenhouses minutes two groups and carry out.
First group: as cauline leaf, process herbicide application test: Mikania micrantha seedling is potted plant in 40 centimetres of earthen basins of diameter, every basin 10 strains.When Mikania micrantha growth animated period, each is processed random 10 basin numberings and is positioned over 1m
2dispenser in sample frame.By each test medicine even spraying on the blade and cane of Mikania micrantha plant.Examination material is placed in the greenhouse cultivation observation of 28-30 ℃.30d investigation lethality after dispenser, and to the survival plant amount of taking advantage of acrial part fresh weight.
Second group: as soil processing herbicide, use test: Mikania micrantha planting seed in 40 centimetres of earthen basins of diameter, 100/basin.Under next day soil moisture conditions, each is processed random 4 basins numberings and is positioned over 1m
2dispenser in sample frame.Each test medicine even spraying is shown at soil.Examination material is placed in the greenhouse cultivation observation of 28-30 ℃.After dispenser, the emergence rate of Mikania micrantha, the amount of taking advantage of above-ground plant parts fresh weight are respectively processed in 60d investigation.
Data are calculated and statistical method: strain preventive effect effect (%)=(check plot survival Mikania micrantha strain number-treatment region survival Mikania micrantha strain number) X 100/ check plot survival Mikania micrantha strain number; Fresh weight effect effect (%)=(check plot Mikania micrantha fresh weight-treatment region Mikania micrantha fresh weight X 100/ check plot Mikania micrantha fresh weight).Control efficiency adopts DMRT statistical analysis.
The effect (%) of the different dispenser processing mode control of table 3 Mikania micrantha
Note: same column is marked with data significant difference in 5% level of different letters.
Result of the test: take respectively cauline leaf processing and closed soil treatment to carry out chemical control at Mikania micrantha growth animated period with before sprouting, the results are shown in Table 3.Series 2-1 fluroxypyr adopts cauline leaf processing mode to have stronger lethal effect to Mikania micrantha seedling, but is administered in soil extremely low to the seed seedling effect of sprouting; Series 2-1 ametryn adopts cauline leaf processing mode poor to the lethal effect of Mikania micrantha seedling, but better to seed and seedling preventive effect in sprouting.
Compare 3 herbicide mixture formulas of this research invention, serial 1-1 fluroxypyr 6g+ ametryn 80g/667m with above-mentioned two kinds of weed killer herbicides
2formula, serial 1-2 fluroxypyr 8g+ ametryn 80g/667m
2formula and fluroxypyr 8g+ series 1-3 ametryn 60g/667m
2no matter formula, adopt cauline leaf to process, and still adopts soil treatment mode all to have good control efficiency, therefore use and not only prevented and treated the Mikania micrantha having occurred, and the Mikania micrantha that can control in soil seed bank, soil seed pool after the soil that falls occurs again.Serial 1-2 fluroxypyr 8g+ ametryn 80g/667m in 3 mixed formulas
2formula and serial 1-3 fluroxypyr 8g+ ametryn 60g/667m
2formula is strong to the kill capability of Mikania micrantha plant, is therefore suitable for most applying at Mikania micrantha the middle and late growth stage; And serial 1-1 fluroxypyr 6g+ ametryn 80g/667m
2formula is best to the control efficiency in Mikania micrantha seed germination stage, is therefore suitable for most in the early stage application of Mikania micrantha growth.
The effect comparison of 4 different times dispenser control Mikania micranthas
Test material: Mikania micrantha
Reagent agent: herbicide mixture formula of the present invention: fluroxypyr 6g+ ametryn 80g/667m
2, fluroxypyr: ametryn=1: 13.3, fluroxypyr 8g+ ametryn 80g/667m
2, fluroxypyr: ametryn=1: 10.0, fluroxypyr 8g+ ametryn 60g/667m
2, fluroxypyr: ametryn=1: 7.5; 80% ametryn that its mamaplasty You Yu Israel A Gan chemical company is produced containing fluroxypyr 20% that The Dow Agrosciences, LLC. produces.
Test period: grow to 30 days in Seedling Stage Mikania micrantha, grow to 60 days in growth animated period and grow to 90 days Mikania micranthas in the squaring period of blooming.
Test method: adopt herbicide mixture formula of the present invention to use at different times, and contrast with ametryn with the fluroxypyr of independent use.The control efficiency of evaluation to Mikania micrantha.The concrete formulation rate of each group test (calculating by active ingredient) is as follows:
The 1-1 of system herbicide mixture formula of the present invention: fluroxypyr: ametryn=1: 13.3,86g ai/667m
2;
The 1-2 of system herbicide mixture formula of the present invention: fluroxypyr: ametryn=1: 10.0,88g ai/667m
2;
The 1-3 of system herbicide mixture formula of the present invention: fluroxypyr: ametryn=1: 7.5,68g ai/667m
2;
The 2-1 of system fluroxypyr is produced and is recommended consumption: 12g ai/667m
2;
The 3-1 of system ametryn is produced and is recommended consumption: 120g ai/667m
2;
Experimental scheme: test in 2008 get Hong Zhou Ruili City, Nian Yunnan Province and carry out.Before testing, in locality, select Mikania micrantha generation in former years, harm to weigh, the good rubber plantation of water and fertilizer condition is as experimental field.Before test, select the consistent delimitation community, plot of cover degree, area 20m
2.15 processing are established in test, establish spray clear water and are treated to blank (CK), and 4 repetitions, randomized complete-block design are established in every processing.The medicament in Mikania micrantha seedling stage is watered 45L/667m
2, the medicament of growth animated period is watered 60L/667m
2, the medicament in the squaring period of blooming is watered 75L/667m
2orientation, directed even spraying is processed each weed killer herbicide, sees experimental scheme system number.After medicine 30 days, random 4 points in every community, 0.25m
2the Aboveground Biomass of Young of investigation Mikania micrantha.The fresh weight of control efficiency (%)=(fresh weight of the residual fresh weight-treatment region in check plot) X 100/ check plot.Control efficiency after each investigational agent adopts DMRT statistical analysis.
The effect (%) of table 4 different times dispenser control Mikania micrantha
Note: same column is marked with data significant difference in 5% level of different letters.
Result of the test: at Mikania micrantha Seedling Stage, the animated period and carry out chemical control the squaring period of blooming of growing, the results are shown in Table 4.Series 2-1 fluroxypyr and serial 3-1 ametryn are better to the control efficiency of Mikania micrantha seedling; At growth animated period, apply effect reduction squaring period with blooming, especially ametryn only has certain inhibitory action to the growth of Mikania micrantha, and can not kill Mikania micrantha strain.Use 3 herbicide mixture formulas of the present invention, serial 1-1 fluroxypyr 6g+ ametryn 80g/667m
2formula, serial 1-2 fluroxypyr 8g+ ametryn 80g/667m
2formula and serial 1-3 fluroxypyr 8g+ ametryn 60g/667m
2formula, the stage different times application of buddingging to blooming at Mikania micrantha Seedling Stage, it is effective that the effect of control Mikania micrantha is all produced upper conventional serial 2-1 fluroxypyr and serial 3-1 ametryn at present.3 formulas are in Mikania micrantha application in seedling stage, the effect of series 1-1 and 1-2 is best, and preventive effect difference is not remarkable, and due to serial 1-1 dosage and cost, all more serial 1-2 is low, therefore in the chemical control of Mikania micrantha Seedling Stage, preferably adopt series 1, i.e. fluroxypyr 6g+ ametryn 80g/667m
2formula; At the application of growth animated period, serial 1-2, i.e. fluroxypyr 8g+ ametryn 80g/667m
2the control efficiency of formula reaches 93.8%, significantly compared with other, handles well; In the application of buddingging of blooming, the effect of serial 1-2 and 1-3 is best, and preventive effect difference is not remarkable, due to serial 1-3 dosage and cost, all more serial 1-2 is low, therefore at Mikania micrantha the middle and late growth stage, chemical control preferably adopts serial 1-3, i.e. fluroxypyr 8g+ ametryn 60g/667m
2formula.The research optimum amount that further confirmation Mikania micrantha different growing stage carries out chemical control.
5 Mikania micrantha recurrence and control periods thereof
Test material: Mikania micrantha
Reagent agent: herbicide mixture formula of the present invention: fluroxypyr 6g+ ametryn 80g/667m
2, fluroxypyr: ametryn=1: 13.3, fluroxypyr 8g+ ametryn 80g/667m
2, fluroxypyr: ametryn=1: 10.0, fluroxypyr 8g+ ametryn 60g/667m
2, fluroxypyr: ametryn=1: 7.5,80% ametryn that its mamaplasty You Yu Israel A Gan chemical company is produced containing fluroxypyr 20% that The Dow Agrosciences, LLC. produces.
Test is processed and consumption: 2008 pairs of following processing are carried out Mikania micrantha and prevented and treated field trial, monitor generation and the recovery situation of each treatment region Mikania micrantha after medicine.The concrete formulation rate of each group test is calculated as follows by active ingredient:
The 1-1 of system is emerged and in the Mikania micrantha of Seedling Stage, is used fluroxypyr 6g+ ametryn 80g/667m in latter 30 days
2
The 1-2 of system is emerged and in the Mikania micrantha of animated period, is used fluroxypyr 8g+ ametryn 80g/667m in latter 60 days
2
The 1-3 of system is emerged and in the Mikania micrantha in the squaring period of blooming, is used fluroxypyr 8g+ ametryn 60g/667m in latter 90 days
2
The 2-1 of system Mikania micrantha Seedling Stage, the animated period and use fluroxypyr 3 times the squaring period of blooming of growing, spray at every turn and use 12gai/667m
2;
The 3-1 of system Mikania micrantha Seedling Stage, the animated period and use ametryn 3 times the squaring period of blooming of growing, spray at every turn and use 120gai/667m
2;
Forecasting stage and method: each is processed from Mikania micrantha emerges, the cover degree at interval of a Mikania micrantha of range estimation in 30 days, continues to 210 days.Control efficiency (%)=(check plot Mikania micrantha cover degree-treatment region Mikania micrantha cover degree) X 100/ check plot Mikania micrantha cover degree.Control efficiency adopts the statistical analysis of the new multipole of Deng Kenshi poor (DMRT) method.
Table 5 is respectively processed the cover degree of different times Mikania micrantha after medicine
Note: serial 2-1 and 3-1 carry out the 2nd time and the 3rd dispenser respectively after investigating for the 60th day and the 90th day; The time of monitoring is with the Mikania micrantha beginning timing of emerging.
Result of the test: at Mikania micrantha Seedling Stage, the animated period and carry out chemical control the squaring period of blooming of growing, the results are shown in Table 5.Series 2-1 fluroxypyr has stronger lethal effect to Mikania micrantha seedling, but due to invalid to root and seed, the rear lasting period of its application is short, and continuous this weed killer herbicide of using for 3 times is all difficult to eradicate Mikania micrantha, and Mikania micrantha can recover rapidly its cover degree in 3-4 month after dispenser; Series 2-1 ametryn is relatively poor to the lethal effect of Mikania micrantha seedling, but the seedling control action that root and seed are sprouted is again better, and the lasting period is relatively long, uses this weed killer herbicide continuous 3 times, and Mikania micrantha is difficult in 4 months recover after dispenser.
Compare 3 herbicide mixture formulas of this research invention, serial 1-1 fluroxypyr 6g+ ametryn 80g/667m with above-mentioned two kinds of weed killer herbicides conventional in current production
2formula, serial 1-2 fluroxypyr 8g+ ametryn 80g/667m
2formula and serial 1-3 fluroxypyr 8g+ ametryn 60g/667m
2formula, respectively at Mikania micrantha Seedling Stage, growth animated period is executed with blooming squaring period, control efficiency reaches more than 90%, and after medicine, in 150-180 days, be difficult to recover and occur, result shows the advantage of two kinds of weed killer herbicide single doses of this research institute invention herbicide mixture formulation absorption, realizes and controls efficiently, lastingly the effect that Mikania micrantha occurs and endangers.
Claims (3)
1. the method for fluroxypyr control mixed with ametryn Mikania micrantha, is characterized in that, concrete steps are as follows:
(1) proportioning: the weight proportion of fluroxypyr and ametryn is 1:7.5-15;
(2) using method: sprout to fluroxypyr and ametryn being dissolved respectively to mix before blooming again and be watered spraying Mikania micrantha, described dissolving is to adopt spirit solvent dissolving, and add washing powder or organosilicon as adsorbent, spreader wets;
(3) usage amount: fluroxypyr consumption is 6-8 g/667m
2; Ametryn consumption is 60-80 g/667m
2; Be watered 45-75 and rise spraying.
2. the method for fluroxypyr control mixed with ametryn Mikania micrantha as claimed in claim 1, is characterized in that described usage amount is: Mikania micrantha Seedling Stage adopts fluroxypyr 6 g/667m
2with ametryn 80g/667m
2dissolve again and mix and be watered spraying respectively; Mikania micrantha growth animated period adopts fluroxypyr 8 g/667m
2with ametryn 80g/667 m
2dissolve again and mix and be watered spraying respectively; Mikania micrantha blooms and adopts fluroxypyr 8 g/667 m squaring period
2with ametryn 60g/667 m
2dissolve again and mix and be watered spraying respectively.
3. the method for fluroxypyr as claimed in claim 1 control mixed with ametryn Mikania micrantha, is characterized in that, be applicable to apply in corn, sugarcane, orchard, rubber and uncultivated area, applying area is away from water conservation district and growing vegetables district.
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| CN102960175B (en) * | 2012-12-11 | 2014-12-03 | 云南省农业科学院农业环境资源研究所 | Method of utilizing replacement control and herbicide application to control mikania micrantha |
| CN104542664A (en) * | 2014-12-23 | 2015-04-29 | 江西中迅农化有限公司 | Weeding composition containing trifloxysulfuron and fluroxypyr as well as ametryn |
| CN111248208B (en) * | 2020-03-18 | 2021-03-16 | 华南农业大学 | Ethephon-containing mikania micrantha preventing and removing agent and application thereof |
| CN112997827B (en) * | 2021-02-21 | 2023-04-11 | 云南省农业科学院农业环境资源研究所 | Method for replacing and controlling mikania micrantha by sweet potato and hyacinth bean combination |
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