CN106259368B - A kind of corn field mixed herbicide containing isoxaflutole - Google Patents
A kind of corn field mixed herbicide containing isoxaflutole Download PDFInfo
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- CN106259368B CN106259368B CN201610680277.2A CN201610680277A CN106259368B CN 106259368 B CN106259368 B CN 106259368B CN 201610680277 A CN201610680277 A CN 201610680277A CN 106259368 B CN106259368 B CN 106259368B
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- isoxaflutole
- garagard
- acetochlor
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/80—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
- A01N37/26—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof containing the group; Thio analogues thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/66—1,3,5-Triazines, not hydrogenated and not substituted at the ring nitrogen atoms
- A01N43/68—1,3,5-Triazines, not hydrogenated and not substituted at the ring nitrogen atoms with two or three nitrogen atoms directly attached to ring carbon atoms
- A01N43/70—Diamino—1,3,5—triazines with only one oxygen, sulfur or halogen atom or only one cyano, thiocyano (—SCN), cyanato (—OCN) or azido (—N3) group directly attached to a ring carbon atom
Abstract
The invention discloses a kind of corn field mixed herbicide containing isoxaflutole, the complex weedicide includes effective ingredient, the effective ingredient is made of isoxaflutole, Acetochlor and Garagard, and wherein the weight ratio of isoxaflutole, Acetochlor and Garagard is 1~80:5~80:5~80.For the present invention using three kinds of different mechanisms collective effects in weeds, not only herbicidal effect is significant, but also environmentally friendly, has good safety to corn, on second stubble crop without influence；Compared with prior art, complex weedicide of the present invention can prevent and kill off gramineae weed and prevent and kill off broadleaf weeds and sedge weed, expand degrass spectrum, have a good application prospect.
Description
Technical field
The present invention relates to herbicide field, specifically a kind of corn field mixed herbicide containing isoxaflutole.
Background technique
Corn is not only one of the most important cereal crops in China and world's staple food crop.Except source area America
In addition, China is corn planting one of area the most universal.Corn is also the highest cereal crops of whole world total output, according to system
Counting american corn yield in 2012 is 272,432 kilotons, and corn consumption figure is 254,444 kilotons, is that the maximum corn in the whole world produces
State is sold, Chinese volume of production and marketing in 2012 is only second to the U.S., 200,000 kiloton of Chinese maize yield in 2012, consumption 201,000,000
Ton.But crop smothering seriously restricts the stable high yield of corn, and corn field weed long-term occurring area in China's is at 3.5 hundred million mu times or more, often
Year can cause corn to lose about 9,500,000,000 kilograms.Therefore, the use ratio of corn field herbicide nearly reaches 100%, dosage
It is very big.
Isoxaflutole is effective inhibitor of HPPD (4 one hydroxyphenyl pyravate dual oxide enzyme), and environmentally friendly, energy is fastly
Speed is widely degraded, and isoxaflutole is a kind of organic heterocyclic class choosing that soil treatment is done for the Dry crops such as corn, sugarcane field
Selecting property internal-suction type herbicide before seedling stage, mainly works via weeds young root Assimilation and conductivity.After susceptible weeds absorb this medicine,
By inhibiting ethyl-para-hydroxyphenyl ketone dioxygenase to destroy the formation of chlorophyll, cause aggrieved weeds chlorosis withered.Isoxaflutole
In application or after application, though the effective component being stranded in topsoil because soil moisture content is bad cannot be played in time
The effect of management of weeds, but still be able to maintain the long period and be not decomposed, rainfall or irrigation to be encountered remain to play management of weeds
Effect, or even the susceptible weeds for growing to 4~5 leaves also can be killed and be inhibited.
Acetochlor is selective bud pre-treatment herbicide, mainly passes through monocotyledonous plumule or dicotyledon
Hypocotyl absorbs, and conducts upwards after absorption, main by hindering protein synthesis that cell is inhibited to grow, and makes weed bud, children
Root growth stops, and then dead.The ability that gramineae weed absorbs Acetochlor is stronger than broadleaf weeds, so preventing and kill off gramineae weed
Effect be better than broadleaf weeds.45 days or so the lasting period of Acetochlor in the soil, mainly by microbial degradation, in the soil
Mobility it is small, be primarily retained in 0-3 cm layer of soil.
Garagard is one of triazine herbicide.Such herbicide has the characteristics that broad weed-killing spectrum, agricultural at low cost.Green bristlegrass
Removing saliva although is the production maximum herbicide of tonnage in triazine, but its residual period is longer, and improper use can make rear stubble
The toxic effect of object, thus finding a kind of herbicide instead of atrazine is the task of top priority.Garagard is to herba digitariae, barnyard grass, anti-branch
Amaranth, 4 kinds of weeds of purslane control efficiency be all higher than atrazine.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of corn field mixed herbicide containing isoxaflutole, Ji Nengfang
Except gramineae weed, and broadleaf weeds can be prevented and kill off, and work well.
The present invention is achieved by the following technical solutions:
A kind of corn field mixed herbicide, the complex weedicide include effective ingredient, and effective ingredient is by isoxazole
Humulone, Acetochlor and Garagard composition, wherein the weight ratio of isoxaflutole, Acetochlor and Garagard is 1~80:5~80:5
~80.
Further scheme, the weight ratio of the isoxaflutole, Acetochlor and Garagard are 4~7:10~30:30~10.
Further scheme, the quality of the effective ingredient account for the 0.1~90% of complex weedicide total weight.
Further scheme, the quality of the effective ingredient account for the 11~80% of complex weedicide total weight.
Further scheme, the complex weedicide further include auxiliary agent and carrier, the auxiliary agent include dispersing agent, wetting agent,
Disintegrating agent, binder, thickener, preservative and safener.
Further scheme, the dispersing agent, wetting agent, disintegrating agent, binder, thickener, preservative and safener
Weight percent is respectively 0.1~20%, 0~10%, 0~20%, 0~20%, 0~10%, 0~5%, 0.1~5%, remaining
Amount is carrier.
Further scheme, the dosage form of the complex weedicide are dispersible oil-suspending agent, granule, wettable powder, water
Dispersible granule or aqueous suspension agent.
The present invention is by inhibiting the isoxaflutole of ethyl-para-hydroxyphenyl ketone dioxygenase to synthesize inhibition carefully with protein is hindered
The Acetochlor of intracellular growth and the photosynthetic Garagard compounding of inhibition, using three kinds of different mechanisms collective effects in miscellaneous
Grass, not only herbicidal effect is significant, but also environmentally friendly, has good safety to corn, on second stubble crop without influence；With
The prior art is compared, and complex weedicide of the present invention can prevent and kill off gramineae weed and prevent and kill off broadleaf weeds and Cyperaceae
Weeds expand degrass spectrum, have a good application prospect.
Security test to corn experiments have shown that, isoxaflutole Acetochlor Garagard compounds soil treatment, suppression
The ED of corn growth 10% processed10=1968.0878mg/kg inhibits the ED of weed growth 90%90=253.2570mg/kg, choosing
Selecting property coefficient is 1968.0878/253.2570=7.77 > 2, it is believed that the medicament has apparent selectivity, isoxaflutole
Acetochlor Garagard has good safety to corn.
Complex weedicide of the present invention shows the Seal treatment before maize seedling by 2 years field control effectiveness tests, and corn is from applying
Medicine has no symptom of chemical damage to the maturity period, to corn safety.Preventive effect 10 days of weeds reach 92% or more, reach within 40 days 80% with
On, with the increase of dosage, preventive effect is remarkably reinforced, and primary application can control the weeds in crop entire growth period, not only
Herbicidal effect is significant, and environmentally friendly, on second stubble crop without influence.
Compared with prior art, complex weedicide of the present invention can prevent and kill off gramineae weed and to prevent and kill off broad-leaved miscellaneous
Grass and sedge weed, have a good application prospect to corn safety, and on succession crop without influence.
Specific embodiment
To be best understood from the present invention, the present invention will be further described below with reference to examples, and following embodiment is only pair
The present invention is illustrated rather than is limited to it.
Embodiment 1
28% isoxaflutole Acetochlor Garagard water dispersible granules (8:10:10):
By 8g isoxaflutole, 10g Acetochlor, 10g Garagard, 10kg dispersing agent D-425 (naphthalene sulphonate formaldehyde condensation
Object), 10kg wetting agent EFW (mixture of alkylnaphthalene sulfonate and anion wetting agent), 20kg ammonium sulfate disintegrating agent,
20kgPVA (polyvinyl alcohol) binder, 5kg safener cyclopropyl-sulfonylamide and carrier kaolin 15kg be adequately mixed, air-flow powder
Broken, mixing, granulation obtain product.
Embodiment 2
37% isoxaflutole Acetochlor Garagard water dispersible granules (7:10:20):
7kg isoxaflutole, 10kg Acetochlor, 20kg Garagard, 10kg dispersing agent D-425 (naphthalene sulphonate formaldehyde condensation
Object), 5kg wetting agent EFW (mixture of alkylnaphthalene sulfonate and anion wetting agent), 20kg ammonium sulfate disintegrating agent, 5kgPVA
(polyvinyl alcohol) binder, 0.5kg safener cyclopropyl-sulfonylamide, carrier kaolin 22.5kg.Said components are adequately mixed, gas
Stream crushes, granulation obtains product.
Embodiment 3
Oil-suspending agent (6:20:20) can be dispersed in 46% isoxaflutole Acetochlor Garagard:
6kg isoxaflutole, 20kg Acetochlor, 20kg Garagard, (block polyether is non-by 15kg dispersing agent Pluronic125
Ionic surface active agent), 2kg thickener bentonite, 0.5kg safener cyclopropyl-sulfonylamide, carrier methyl oleate 36.5kg.It is above-mentioned
Component is by being sufficiently mixed allotment, ball mill grinding, adjusting, be packaged to be product.
Embodiment 4
55% isoxaflutole Acetochlor Garagard aqueous suspension (5:30:20):
5kg isoxaflutole, 30kg Acetochlor, 20kg Garagard, 10kg dispersing agent NNO (sodium methylene bis-naphthalene sulfonate),
8kg wetting agent K12 (lauryl sodium sulfate), 0.2kg thickener xanthan gum, 1kg Preservative Kathon CG(Methylchloroisothiazolinone/Methylisothiazolinone combination), 0.5kg safener cyclopropyl
Sulfonamide, carrier water 25.3kg.Said components are adequately mixed, ball mill grinding, are mixed to get product.
Embodiment 5
46% isoxaflutole Acetochlor Garagard aqueous suspension (6:20:20):
6kg isoxaflutole, 20kg Acetochlor, 20kg Garagard, 4kg dispersing agent NNO (sodium methylene bis-naphthalene sulfonate),
3kg wetting agent K12 (lauryl sodium sulfate), 0.3kg thickener xanthan gum, 0.1kg Preservative Kathon CG(Methylchloroisothiazolinone/Methylisothiazolinone combination), 1.5kg safener ring
Third sulfonamide, carrier water 45.1kg.Said components are adequately mixed, ball mill grinding, are mixed to get product.
Embodiment 6
Oil-suspending agent (4:21.5:21.5) can be dispersed in 47% isoxaflutole Acetochlor Garagard:
4kg isoxaflutole, 21.5kg Acetochlor, 21.5kg Garagard, (block is poly- by 15kg dispersing agent Pluronic125
Ether nonionic surfactant), 2kg thickener bentonite, 1kg safener cyclopropyl-sulfonylamide, carrier methyl oleate 35kg.It is above-mentioned
Component is by being sufficiently mixed allotment, ball mill grinding, adjusting, be packaged to be product.
Embodiment 7
60% isoxaflutole Acetochlor Garagard water dispersible granules (4:28:28):
4kg isoxaflutole, 28kg Acetochlor, 28kg Garagard, 4kg dispersing agent D-425 (naphthalene sulphonate formaldehyde condensation
Object), 1kg wetting agent EFW (mixture of alkylnaphthalene sulfonate and anion wetting agent), 1kgPVA (polyvinyl alcohol) binder,
1kg safener cyclopropyl-sulfonylamide, carrier kaolin 32kg.Said components are adequately mixed, air-flow crushing, granulation obtain product.
Embodiment 8
80% isoxaflutole Acetochlor Garagard water dispersible granules (8:35:37):
8kg isoxaflutole, 35kg Acetochlor, 37kg Garagard, 4kg dispersing agent D-425 (naphthalene sulphonate formaldehyde condensation
Object), 1kg wetting agent EFW (mixture of alkylnaphthalene sulfonate and anion wetting agent), 1kgPVA (polyvinyl alcohol) binder,
1kg safener cyclopropyl-sulfonylamide, carrier kaolin 13kg.Said components are adequately mixed, air-flow crushing, granulation obtain product.
Embodiment 9
64% isoxaflutole Acetochlor Garagard water dispersible granules (4:30:30):
4kg isoxaflutole, 30kg Acetochlor, 30kg Garagard, 4kg dispersing agent D-425 (naphthalene sulphonate formaldehyde condensation
Object), 1kg wetting agent EFW (mixture of alkylnaphthalene sulfonate and anion wetting agent), 1kgPVA (polyvinyl alcohol) binder,
1kg safener cyclopropyl-sulfonylamide, carrier kaolin 29kg.Said components are adequately mixed, air-flow crushing, granulation obtain product.
Embodiment 10: isoxaflutole, Acetochlor and Garagard cauline leaf process synergy toxicity determination test
Under greenhouse experiment, using pot-culture method, isoxaflutole, Acetochlor and Garagard ternary built are studied
Herbicidal effect, and the synergy type with the co-toxicity coefficient method of Sun Yunpei evaluation three's different proportion after mixed, are isoxazole
The rational mixture of humulone, Acetochlor and Garagard provides scientific basis.
For studying object corn variety: Zheng Dan 958
For trying weeds herba digitariae (Digitaria sanguinalis (Linn.) Scop.), herba setariae viridis (Setaria
Viridis (L.) Beauv.), acalypha copperleaf (Acalypha australis L.), Chenopodiaceae (Chenopodium album L.) is different
Type nutgrass flatsedge (Cyperus difformis L.) (field upper one year harvests seed, and germination percentage is 85% or more).
97% isoxaflutole raw medicine (BASF European Co., Ltd) of reagent agent；(Jiangsu Province is agricultural for 98% acetochlor tc
Hormone engineering Technical Research Center Co., Ltd)；92% Garagard raw medicine (Xuanhua Agriculture Chemicals Co., Ltd., Hebei).
Weigh quantitative raw medicine with electronic balance, suitable emulsifier be added, with acetone solution, finally with 0.1% soil
Above-mentioned raw medicine is diluted to required concentration by warm 80 aqueous solutions.
The synergy of Acetochlor and Garagard
Acetochlor, Garagard single dose and 5 Acetochlors and Garagard mixture preparation are set into 5 dosage respectively, separately set blank
Control, each test process are repeated 4 times.See Table 1 for details for treatment agent dosage.
1 test process of table and test level (dosage g a.i./667 ㎡)
The best mixture of Acetochlor and Garagard is subjected to Combined Trials with isoxaflutole
Acetochlor Garagard mixture, isoxaflutole single dose and 5 mixture preparations are set into 5 dosage respectively, separately set sky
White control, each test process are repeated 4 times.See Table 2 for details for treatment agent dosage.
2 test process of table and test level (concentration g a.i./667 ㎡)
In 3 leaf phase of corn, weeds 2-4 leaf phase cauline leaf spraying treatment.It tests at progress on June 5th, 2015 reagent spray
Reason is administered 1 time.Record the damage symptoms of corn and weeds after application in detail, 20d after medicine carries out fresh weight measurement, and with compare place
Reason compares, and calculates fresh weight preventive effect.
Synergy type of the test result with the co-toxicity coefficient method evaluation of Sun Yunpei after mixed.According to SUN, Y-P (Sun Yun
It is abundant) method calculates its actual toxicity index, mixtures theoretical toxicity index, co-toxicity coefficient.It is X, pest and disease damage preventive effect machine with log concentration
Rate value is Y, seeks regression equation.
Actual toxicity index=standard agent LD50/ mixture LD50 × 100
Theoretical toxicity index=∑ (percentage of the medicament effective component of the toxicity index of reagent agent × in mixture)
Co-toxicity coefficient=mixture actual toxicity index/theoretical toxicity index × 100
Using isoxaflutole, Garagard as standard agent in test.
Criterion: co-toxicity coefficient<80 are antagonism, are summation action between 80-120, and>120 be synergistic effect.
The synergy of Acetochlor and Garagard is as shown in table 3 below:
Fresh weight preventive effect of the 20d to weeds after 3 Acetochlor of table and Garagard mixture medicine
Control efficiency is the average value of four data in table.
Acetochlor is with Garagard Mixed Pharmacy to the toxic action situation and preventive effect of weeds as shown in Table 3.Pass through formula meter
Calculate its respective virulence regression equation, LD50, actual toxicity index, theoretical toxicity index and co-toxicity coefficient be listed in table 4.
Table 4: Garagard and synergy of the Acetochlor mixture to weeds
By test it is found that the co-toxicity coefficient of processing C, D, E, F, G be respectively as follows: 188.76,222.47,260.85,240.72,
213.79, co-toxicity coefficient is all larger than 120, has synergistic effect, and the co-toxicity coefficient of especially processing E is up to 260.85, has
Significant synergistic effect has significant synergies to annual single broadleaf weed.
Wherein Acetochlor and Garagard are best mixed (Acetochlor: Garagard=20:20), by the connection of itself and isoxaflutole
Cooperation is with as shown in table 5 below:
The best mixture fresh weight preventive effect to weeds mixed with isoxaflutole of 5 Acetochlor of table and Garagard
Control efficiency is the average value of four data in table.
Second spy is with isoxaflutole medicament to the toxic action situation and preventive effect of weeds as shown in Table 5.Pass through formula meter
Calculate its respective virulence regression equation, LD50, actual toxicity index, theoretical toxicity index and co-toxicity coefficient be listed in table 6.
Table 6: Acetochlor Garagard and indoor virulence and synergy of the isoxaflutole difference mixed ratio to weeds
| Processing | Regression equation | Related coefficient | LD50 | Actual toxicity index | Theoretical toxicity index | Coefficient of synergism |
| A | Y=1.8644x+3.2414 | 0.9925 | 8.7753 | 100 | / | / |
| B | Y=1.9369x+2.4770 | 0.9946 | 2.1379 | 410.46 | / | / |
| C | Y=1.8549x+3.8474 | 0.9970 | 4.1817 | 209.85 | 188.70 | 111.21 |
| D | Y=1.8923x+3.8754 | 0.9977 | 3.9295 | 223.32 | 158.73 | 140.69 |
| E | Y=1.9106x+3.9241 | 0.9979 | 3.6569 | 239.97 | 140.50 | 170.80 |
| F | Y=1.8323x+3.8379 | 0.9971 | 4.3077 | 203.71 | 128.22 | 158.88 |
| G | Y=1.7802x+3.7734 | 0.9990 | 4.8870 | 179.56 | 119.40 | 150.39 |
By test it is found that the co-toxicity coefficient of processing C, D, E, F, G be respectively as follows: 111.21,140.69,170.80,158.88,
150.39,80 are all larger than, there is addition or synergistic effect；And the co-toxicity coefficient of D, E, F, G are greater than 120, have synergistic effect, it is special
It is not the co-toxicity coefficient maximum of E, reaches significant synergistic effect.
By testing it is found that three kinds of isoxaflutole, Acetochlor and Garagard active constituents are 4-7:10- by weight
30:10-30 is compounded, and is had significant synergies to annual single broadleaf weed.Wherein isoxaflutole, Acetochlor
The co-toxicity coefficient compounded with Garagard with the weight ratio of 6:20:20 is maximum, and herbicidal effect is best.
Embodiment 11:
60% isoxaflutole Acetochlor Garagard water dispersible granules (isoxaflutole in embodiment 7: Acetochlor:
Garagard=4:28:28) Security test test of the soil treatment to corn:
1, under greenhouse experiment, using pot-culture method, isoxaflutole, Acetochlor and Te Ding test objective: are studied
Safety of the saliva ternary built soil treatment to corn, the rational mixture for isoxaflutole, Acetochlor and Garagard provide section
Learn foundation.
2, for studying object: corn variety Zheng Dan 958: herba digitariae (Digitaria sanguinalis (Linn.) Scop.), dog
Tail grass (Setaria viridis (L.) Beauv.), acalypha copperleaf (Acalypha australis L.), Chenopodiaceae (Chenopodium
Album L.), difformed galingale herb (Cyperus difformis L.) (field upper one year harvest seed, germination percentage 85% with
On).
3, in illumination cultivation room carry out test material culture, 25~30 DEG C of temperature.Selection diameter is 15cm, is highly
The vinyon basin alms bowl of 15cm.When test, 20, every kind of corn seed weed seed 30~40 is uniformly put into basin and is covered
Native 0.5cm, successively sprays from low concentration to high concentration, and being placed on ventilation after spray dries, be then placed in the greenhouse in and cultivate (25~
30℃).The regular moisturizing (not watering in 2 days after medicine) in a manner of the infiltration of bottom, keeps soil moisture.
4, reagent agent: 98% isoxaflutole raw medicine (Anhui Fengle Agricultural Co., Ltd provides for oneself)；97% second grass
Amine raw medicine (Anhui Zhong Shan Chemical Co., Ltd.)；97% Garagard (Shandong Binnong Technology Co., Ltd.).It is weighed with electronic balance
Suitable emulsifier is added in quantitative raw medicine, finally with 0.1% Tween 80 aqueous solution that above-mentioned raw medicine is dilute with acetone solution
It releases to required concentration.
5, application method: soil spraying treatment in 2-3 days after after corn is broadcast.Spray uses the indoor crown-block type of adjustable speed
Atomizing tester simulates field conventional spraying methods.Spray head is Fan spray head, model Teejer8002E type, spray value 40
Kg/acre.0.5 meter of spray height, 0.7 meter of spraying swath, 0.224 meter per second of leg speed.2.0 megapascal of atomisation pressure, 697 liters/min of flow.
Soil spraying treatment in 2-3 days, is administered 1 time after testing after corn is broadcast.
6, investigation and calculation method:
Each processing is investigated after the neat seedling of blank control corn, and whether there is or not symptom of chemical damage, record symptom of chemical damage, grade in detail if having,
20 days after medicine, each processing corn fresh weight is measured, calculates fresh weight inhibition rate, the safety with clear test medicine to corn.
Weeds emergence and damage symptoms (such as growth inhibition, chlorosis, deformity) are recorded after application in detail, 20 after medicine
It, weighs each processing weeds aerial part fresh weight, calculates the fresh weight preventive effect of weeds.
Regression analysis is carried out to the logarithm of drug dose and the probability value of corn fresh weight inhibition rate with DPS software, is calculated
Dosage ED when related coefficient and inhibition crop 10%10, and dosage ED when inhibition weeds 90%90, find out selectivity index.
Wherein, selectivity index=ED10/ED90。
7, result and analysis:
Shadow of the 60% isoxaflutole Acetochlor Garagard water dispersible granules soil treatment of embodiment 7 to corn
It rings:
Safety evaluation standard is shown in Table 7, observes (15d after medicine) after the neat seedling of blank control, 60% isoxaflutole second grass
The individual corn lobus cardiacuses of amine Garagard water dispersible granules high concentration 1600mg/kg processing have slight jaundice, and growth is slightly pressed down
System, other concentration processing corn growths are normal；20 days after application, 1600mg/kg processing corn also slowly restores.20 after application
It, 60% isoxaflutole Acetochlor Garagard water dispersible granules are shown in Table 8 to the inhibiting effect of corn.20 days after application,
60% isoxaflutole Acetochlor Garagard water dispersible granules are shown in Table 9 to the toxic action situation and preventive effect of weeds.
7 activity of weeding of table and crop safety ocular estimate evaluation criterion
20 days after application, (60% refers to isoxazole grass to 60% isoxaflutole Acetochlor Garagard water dispersible granules
Three kinds of ketone, Acetochlor and Garagard active components account for the percentage of gross weight) 8 are shown in Table to the inhibiting effect of corn.
Inhibiting effect of the 8 60% isoxaflutole Acetochlor Garagard water dispersible granules of table to corn
Fresh weight preventive effect of the 9 60% isoxaflutole Acetochlor Garagard water dispersible granules of table to weeds
The medicament is to the toxic action situation and preventive effect of weeds as shown in Table 9, by formula calculate its virulence regression equation,
LD50, it is listed in table 10.
10 virulence regression equation of table and LD50
| Processing | Regression equation | Related coefficient | LD50 | 95% confidence interval |
| A | Y=0.5743+2.3745x | 0.9927 | 73.0885 | 63.4344~84.2118 |
As shown in Table 10: the LD of 60% isoxaflutole Acetochlor Garagard water dispersible granules50Are as follows: 73.0885mg/
Kg, 95% confidence interval are 63.4344-84.2118mg/kg.
Selectivity index of the isoxaflutole Acetochlor Garagard soil treatment to corn and weeds: by table 8, table 9,
The ED for inhibiting corn growth 10% is acquired by DPS software10=1968.0878mg/kg inhibits the ED of weed growth 90%90=
253.2570mg/kg, selectivity factor 1968.0878/253.2570=7.77 > 2, it is believed that the medicament has apparent selection
Property, field control effectiveness test can be carried out.
Overall merit: this test result shows that isoxaflutole Acetochlor Garagard soil treatment high concentration (is recommended
4 times of dosage high dose) processing can cause corn yellow to corn, other concentration processing (recommended dose high dose and its again
Amount) corn growth is normal.By indoor toxicity test it is found that isoxaflutole Acetochlor Garagard corn has good peace
Quan Xing has good control efficiency to weeds.
Embodiment 12:46% isoxaflutole Acetochlor Garagard suspoemulsion (6:20:20) field control effectiveness test:
Show, to implement using the present invention weeds 2-5 leaf not equal phases in the 3 leaf phase of corn by 2 years field control effectiveness tests
46% isoxaflutole Acetochlor Garagard suspoemulsion (6:20:20) of example 3,80,100,120,200 milliliter/mu of dosage,
It is watered 40 kgs/acre to spray, 10,30 days and maturity period range estimation corn safety and Weed-control effect, 10,30 days survey preventive effects, and with
Oil-suspending agent can be dispersed in single sprinkling 150 milliliter/mu, 2.5% isoxaflutole, 80 milliliter/mu, 15% Acetochlor suspending agent carries out
Compare, as a result such as the following table 11:
11 preventive effect of table
Note: in table 11, each data of blank control are weeds strain number (strain), and other each data are strain preventive effect (%).
By range estimation, corn has no symptom of chemical damage from application to the maturity period, to corn safety.46% isoxaflutole second
Careless 80 milliliter/mu of amine Garagard suspoemulsion reaches 80% or more for 10 days, reaches 92% or more within 40 days to the preventive effect of weeds, with
The increase of dosage, preventive effect be remarkably reinforced, can have good herbicidal effect to weeds in 80 milliliter/mu of corn field, with list
Solely compared using one of effective component, expand degrass spectrum, there is apparent synergy to gramineae weed and broadleaf weeds
Effect.Primary application can control the weeds in crop entire growth period, and not only herbicidal effect is significant, but also environmentally friendly,
On second stubble crop without influence, small pollution of the environment is conducive to keep ecology flat to people, animal, birds and beneficial organism safety
Weighing apparatus.In addition, herbicide of the invention is processed using physical method, and simple production process, three-waste free discharge in production process, to life
State environment has no adverse effects, and is the ideal complex weedicide of current control efficiency.
Embodiment 13:
By trying other different ratio isoxaflutole Acetochlor Garagard 2 years field efficacies of complex weedicide
It tests and shows to utilize 28% isoxaflutole second grass of the embodiment of the present invention 1 in 3 leaf phase of corn, weeds 2-5 leaf not equal phases
37% isoxaflutole Acetochlor Garagard water-dispersible grain of amine Garagard water dispersible granules (8:10:10), embodiment 2
Agent (7:10:20), 55% isoxaflutole Acetochlor Garagard aqueous suspension (5:30:20) of embodiment 4, embodiment 6
The 64% different evil of oil-suspending agent (4:21.5:21.5) and embodiment 9 can be dispersed in 47% isoxaflutole Acetochlor Garagard
Azoles humulone Acetochlor Garagard water dispersible granules (4:30:30) each plant demand, is watered 40 kgs/acre and sprays, 10,30 days and
Maturity period estimates corn safety and Weed-control effect, surveys all preventive effects within 10,30 days, as a result such as the following table 12:
Effect of the 12 different ratio isoxaflutole Acetochlor Garagard of table to weeds
Note: in table 12, each data of blank control are weeds strain number (strain), and other each data are strain preventive effect (%).
By range estimation, corn from be after planting administered to emergence, Adult plant, knot the stick phase have no symptom of chemical damage, to corn safety.
Each plant demand of embodiment 1,2,4,6,9 reaches 92% or more for 10 days, preventive effect is thrown away and reaches 72% or more within 30 days to the preventive effect of weeds.
So complex weedicide made by embodiment 1,2,4,6 and 9 has certain preventive effect to all types of weeds in the present invention, and with
The increase of effective component ratio and dosage, preventive effect be remarkably reinforced, normal usage can reach relatively good preventive effect.
Complex weedicide of the invention is once administered the weeds that can control in crop entire growth period, not only herbicidal effect
Significantly, and environmentally friendly, on second stubble crop without influence, small pollution of the environment pacifies people, animal, birds and beneficial organism
Entirely, be conducive to keep ecological balance.In addition, herbicide of the invention is processed using physical method, simple production process was produced
Three-waste free discharge in journey, has no adverse effects to ecological environment.It is the ideal complex weedicide of current control efficiency.
Embodiment described above is only that preferred embodiments of the present invention will be described, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made, should fall within the scope of protection determined by the claims of the present invention.
Claims (6)
1. a kind of corn field mixed herbicide containing isoxaflutole, the complex weedicide includes effective ingredient, and feature exists
In: the effective ingredient is made of isoxaflutole, Acetochlor and Garagard, wherein the isoxaflutole, Acetochlor and
The weight ratio of Garagard is 4~7:10~30:30~10.
2. a kind of corn field mixed herbicide containing isoxaflutole according to claim 1, it is characterised in that: described to have
The quality of effect composition accounts for the 0.1~90% of complex weedicide total weight.
3. a kind of corn field mixed herbicide containing isoxaflutole according to claim 1, it is characterised in that: described to have
The quality of effect composition accounts for the 11~80% of complex weedicide total weight.
4. a kind of corn field mixed herbicide containing isoxaflutole according to claim 1, it is characterised in that: described multiple
It further include auxiliary agent and carrier with herbicide, the auxiliary agent includes dispersing agent, wetting agent, disintegrating agent, binder, thickener, anti-corrosion
Agent and safener.
5. a kind of corn field mixed herbicide containing isoxaflutole according to claim 4, it is characterised in that: described point
Powder, wetting agent, disintegrating agent, binder, thickener, preservative and safener weight percent be respectively 0.1~20%, 0
~10%, 0~20%, 0~20%, 0~10%, 0~5%, 0.1~5%, surplus is carrier.
6. a kind of described in any item corn field mixed herbicides containing isoxaflutole, feature exist according to claim 1~5
In: the dosage form of the complex weedicide is dispersible oil-suspending agent, granule, wettable powder, water dispersible granules or aqueous suspension
Agent.
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| CN111184004A (en) * | 2020-01-16 | 2020-05-22 | 上海明德立达生物科技有限公司 | Pesticide composition and application thereof |
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| PL2249642T3 (en) * | 2008-02-20 | 2013-02-28 | Syngenta Participations Ag | Herbicide formulation |
| GB0816880D0 (en) * | 2008-09-15 | 2008-10-22 | Syngenta Ltd | Improvements in or relating to organic compounds |
| CN101904336A (en) * | 2009-06-05 | 2010-12-08 | 丹东市农药总厂 | Composition of corn field herbicides |
| WO2012071248A1 (en) * | 2010-11-23 | 2012-05-31 | Dow Agrosciences Llc | Herbicidal capsule suspensions of acetochlor containing reduced amounts of safener |
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