A kind of Herbicidal combinations and its application containing sulfone pyrrole grass azoles and Oxyfluorfen
Technical field
The present invention relates to pesticide herbicide fields, and in particular to a kind of weeding group containing sulfone pyrrole grass azoles and Oxyfluorfen
Close object and its application.
Background technique
Peanut is the main oil crops in China, in recent years, long-term cultivated area at 70,000,000 mu or so, with Henan,
Shandong, Hebei, Anhui are major production areas.China has a vast territory, and natural environment is complicated, geographical form of diverse, Weed in peanut field hair
Non-hibernating eggs class is more and quantity is big, seriously affects the yield and quality of peanut.According to incompletely statistics, peanut is because of the underproduction caused by weeds
In 6%-15%, serious plot may be up to 50% or more.Currently, to be that modern Weed in peanut field is prevented and kill off important for chemical weed control
Means.Seek a kind of efficient, low toxicity, easy to use, no pollution to the environment, to peanut safety and to succession crop noresidue phytotoxicity
Herbicide be direction that we study always.
Sulfone pyrrole grass azoles (Pyroxasulfone) chemical name [3- [(5- difluoro-methoxy -1- methyl -3- trifluoromethyl pyrrole
Azoles -4- base)-sulfonyloxy methyl] -4,5- dihydro -5,5- dimethyl isoxazole], mechanism of action is to inhibit overlength fat chain extension,
It is absorbed after application by weeds young root and young shoot, destroys separate living tissue and plumule, inhibit seeding previous vigor.The ingredient degrass spectrum
Extensively, a series of gramineae weeds such as herba setariae viridis, herba digitariae, barnyard grass and Amaranthus retroflexus, datura, black nightshade, piemarker, Chenopodiaceae can effectively be prevented and kill off
Equal broadleaf weeds.Unit area dosage is low, herbicidal effect is good, is its outstanding feature to crop safety and weeding lasting period length.
Oxyfluorfen (Oxyfluorfen) chemical name [three oxygen of the chloro- 1- of 2- (3- ethyoxyl -4-nitrophenoxy) -4-
Toluene], mechanism of action is to inhibit proporphyrinogen oxidase activity, so that Chlorophyll synthesis is obstructed, is a kind of choosing of ultralow dosage
Selecting property, before or after buds contact killing type herbicide, it is lethal that weeds mainly pass through plumule, mesocotyl absorption medicament.The ingredient is mainly used
It is pierced in preventing and kill off broad-leaved Chenopodiaceae, black nightshade, Siberian cocklebur, purslane, Amaranthus retroflexus, concave head amaranth, datura, herba stellariae mediae, simple fiber crops, pale persicaria, willow leaf
Knotweed, liquor-saturated slurry grass, high mallow, field storage, nutgrass flatsedge and part gramineae weed such as barnyard grass, downy brome, herba setariae viridis etc..The composition characteristic is to use
Amount is few, and activity is high, and quick-acting is good.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of safe and efficient weeding groups for effectively preventing and kill off Weed in peanut field
Object is closed, soil treatment before seedling sowing is used for, without antagonism between each ingredient, has favorable effect to broad-leaved, grass family and nutgrass flatsedge,
Quick-acting is good, and the lasting period is long.
To realize above-mentioned technical problem, technical scheme is as follows:
A kind of Herbicidal combinations containing sulfone pyrrole grass azoles and Oxyfluorfen, the effective component sulfone pyrrole grass azoles and ethoxy fluorine
Careless ether weight percent is 1: 100~100: 1.
On the basis of above scheme, the effective component sulfone pyrrole grass azoles and Oxyfluorfen weight percent be 1: 50~
50∶1。
On the basis of above scheme, the effective component sulfone pyrrole grass azoles and Oxyfluorfen weight percent be 1: 10~
10∶1。
On the basis of above scheme, the effective component sulfone pyrrole grass azoles and Oxyfluorfen account for total composition 1~
90%.
On the basis of above scheme, the effective component sulfone pyrrole grass azoles and Oxyfluorfen account for the 20% of total composition
~65%.
On the basis of above scheme, the specific preparation of the Herbicidal combinations is missible oil, suspending agent, microemulsion, outstanding cream
Agent, aqueous emulsion, dispersible oil-suspending agent, wettable powder or water dispersible granules.
Application of the above-mentioned Herbicidal combinations in prevention and treatment Peanut Fields injurious weed.
On the basis of above scheme, the Peanut Fields injurious weed is Chenopodiaceae, Amaranthus retroflexus, purslane and inhibits to ACCase
Gramineous weeds sativa, the barnyard grass, herba setariae viridis of agent class herbicide generation resistance.
Weeding suspending agent containing sulfone pyrrole grass azoles and Oxyfluorfen is prepared in parts by weight by following components:Have
Effect ingredient sulfone pyrrole grass azoles and Oxyfluorfen account for the 20%~65% of suspending agent total amount, thickener 0%~3%, stabilizer 0.5%
~3%, dispersing agent 1.5%~3.5%, wetting agent 0.5%~3%, antifreezing agent 2%~8%, defoaming agent 0.2%~1%, water
Surplus.
On the basis of above scheme, thickener is carboxylic hydroxyethyl cellulose, methylethylcellulose, polyvinylpyrrolidine
One of ketone, NY51 or numerous compositions;
Stabilizer is one of bentonite, white carbon black, diatomite or numerous compositions;
Wetting agent is one of neopelex, alkyl polyoxyethylene ether sulfonate;
Dispersing agent is sodium lignin sulfonate, Negel, N- Methyl fatty acyl taurines sodium, naphthalenesulfonateformaldehyde formaldehyde contracting
Close one of object or numerous compositions;
One of defoaming agent silicone, lauric acid;
Antifreezing agent is one of glycerine, ethylene glycol.
Application of the above-mentioned weeding suspending agent containing sulfone pyrrole grass azoles and Oxyfluorfen in prevention and treatment Peanut Fields injurious weed.
On the basis of above scheme, the Peanut Fields injurious weed is Chenopodiaceae, Amaranthus retroflexus, purslane and inhibits to ACCase
Gramineous weeds sativa, the barnyard grass, herba setariae viridis of agent class herbicide generation resistance.
Beneficial effects of the present invention:Herbicidal combinations of the invention are mainly used for soil treatment, and there is significant synergy to make
With Peanut Fields major part weeds can be effectively prevented, and safety is good, and quick-acting is good, and the lasting period is long, is a kind of reason up to 60 days
The Herbicidal combinations thought.
Specific embodiment
Term as used in the present invention generally has those of ordinary skill in the art usual unless otherwise specified
The meaning of understanding.
Combined with specific embodiments below, and referring to the data further detailed description present invention.Following embodiment only be
It illustrates the present invention, rather than limits the scope of the invention in any way.
One, indoor proportion joint toxicity measuring
For trying weeds:Herba digitariae (Digitaria sanguinalis), barnyard grass (Echinochloa crusgalli), Chenopodiaceae
(Chenopodium album), Amaranthus retroflexus (Amaranthus retroflexus).
The culture of experimental condition and test material:Carried out in illumination cultivation room test test material culture, 25~35 DEG C of temperature.It will
Quantitative herba digitariae, barnyard grass, Chenopodiaceae, Amaranthus retroflexus presprouting of seeds are sowed in the plastic tub of diameter 8cm after showing money or valuables one carries unintentionally, and 1~2mm of earthing is put into
In pallet equipped with water, water is allowed gradually to penetrate into, it is stand-by that illumination cultivation room is transferred to after waiting water to be seeped into native table.
Reagent agent:Commercially available sulfone pyrrole grass azoles, Oxyfluorfen raw medicine.
Reagent agent drug solution preparing:Weigh quantitative sulfone pyrrole grass azoles, Oxyfluorfen raw medicine, diformazan respectively with electronic balance
Base formamide (DMF) dissolution, is diluted to required concentration with 0.1% Tween-80 aqueous solution.
Test dose design:
1 reagent agent management of weeds test dose of table designs (dosage g.a.i./hm2)
Application method:It tests and shows money or valuables one carries unintentionally after planting in weed seed, the processing of soil even spraying.Weeds are uniformly placed in face
Product 1m2Platform on, it is spraying with ASS-4 type automatic ration spraying system (National agricultural information project Technical Research Center),
Teejet9503EVS Fan spray head, spouting liquid 450L/hm2, atomisation pressure 0.275MPa, 4 repetitions.
Weedy rices method, time:It weighs each processing weeds aerial part fresh weight within 20 days after application, calculates fresh weight preventive effect.
Drug effect calculation method:Theoretical fresh weight inhibition rate (the E of each processing blend compositions is calculated with Gowing method0=X+Y-
X*Y/100), then compared with actual measurement inhibiting rate (E), the mixed synergy type to weeds of both evaluations works as E-E0Value
It is synergistic effect greater than 10%, be antagonism less than -10%, is addition between -10%~10%.
2 sulfone pyrrole grass azoles of table is mixed with Oxyfluorfen to gramineae weed control efficiency
3 sulfone pyrrole grass azoles of table is mixed with Oxyfluorfen to broadleaf weeds control efficiency
Composition provided by the invention is under suitably proportion dosage to grass family and broad-leaved it can be seen from upper table 2,3
Weeds have outstanding preventive effect, and two kinds of medicament degrass spectrums are complementary, and synergistic effect is obvious.Lower than under the recommended dose of crop field
Mixed (such as 40~80ai.g/hm of sulfone pyrrole grass azoles2+40~80g/hm of Oxyfluorfen2) reasonable to herba digitariae, barnyard grass, Chenopodiaceae, Amaranthus retroflexus
The herbicidal effect thought, while can effectively reduce phytotoxicity of the Oxyfluorfen to peanut.
Two, indoor Herbicidal
Example 1 group closes object 1
Active constituent accounts for the Herbicidal combinations of 20% sulfone pyrrole grass azoles and Oxyfluorfen, in every 100g, sulfone pyrrole grass azoles
(weight ratio of sulfone pyrrole grass azoles and Oxyfluorfen is 0.5 by 6.67g, Oxyfluorfen 13.33g:1), neopelex
1.5g, sodium lignin sulfonate 1.5g, bentonite 1.5g, carboxylic hydroxyethyl cellulose 1.5g, glycerine 5g, silicone 0.5g add water
68.5g, through high speed shear, wet process is sanded, and suspension herbicidal composition 1 is made after uniform filtration.
2 composition 2 of embodiment
Active constituent accounts for the Herbicidal combinations of 20% sulfone pyrrole grass azoles and Oxyfluorfen, in every 100g, sulfone pyrrole grass azoles
(weight ratio of sulfone pyrrole grass azoles and Oxyfluorfen is 1 by 10g, Oxyfluorfen 10g:1), neopelex 1.5g, wood
Quality sodium sulfonate 1.5g, bentonite 1.5g, carboxylic hydroxyethyl cellulose 1.5g, glycerine 5g, silicone 0.5g add water 68.5g, through height
Speed shearing, wet process are sanded, and suspension herbicidal composition 2 is made after uniform filtration.
3 composition 3 of embodiment
Active constituent accounts for the Herbicidal combinations of 20% sulfone pyrrole grass azoles and Oxyfluorfen, in every 100g, sulfone pyrrole grass azoles
(weight ratio of sulfone pyrrole grass azoles and Oxyfluorfen is 1 by 13.33g, Oxyfluorfen 6.67g:0.5), neopelex
1.5g, sodium lignin sulfonate 1.5g, bentonite 1.5g, carboxylic hydroxyethyl cellulose 1.5g, glycerine 5g, silicone 0.5g add water
68.5g, through high speed shear, wet process is sanded, and suspension herbicidal composition 3 is made after uniform filtration.
4 composition 4 of embodiment
Active constituent accounts for the Herbicidal combinations of 40% sulfone pyrrole grass azoles and Oxyfluorfen, in every 100g, sulfone pyrrole grass azoles
(weight ratio of sulfone pyrrole grass azoles and Oxyfluorfen is 0.5 by 13.33g, Oxyfluorfen 26.67g:1), alkyl polyoxyethylene ether sulphur
Hydrochlorate 2g, N- Methyl fatty acyl taurines sodium 2g, bentonite 2g, glycerine 5g, lauric acid 0.5g add water 48.5g, through high speed
Shearing, wet process are sanded, and suspension herbicidal composition 4 is made after uniform filtration.
5 composition 5 of embodiment
Active constituent accounts for the Herbicidal combinations of 40% sulfone pyrrole grass azoles and Oxyfluorfen, in every 100g, sulfone pyrrole grass azoles
(weight ratio of sulfone pyrrole grass azoles and Oxyfluorfen is 1 by 20g, Oxyfluorfen 20g:1), alkyl polyoxyethylene ether sulfonate 2g,
N- Methyl fatty acyl taurines sodium 2g, bentonite 2g, glycerine 5g, lauric acid 0.5g add water 48.5g, wet through high speed shear
Method is sanded, and suspension herbicidal composition 5 is made after uniform filtration.
6 composition 6 of embodiment
Active constituent accounts for the Herbicidal combinations of 40% sulfone pyrrole grass azoles and Oxyfluorfen, in every 100g, sulfone pyrrole grass azoles
(weight ratio of sulfone pyrrole grass azoles and Oxyfluorfen is 1 by 26.67g, Oxyfluorfen 13.33g:0.5), alkyl polyoxyethylene ether sulphur
Hydrochlorate 2g, N- Methyl fatty acyl taurines sodium 2g, bentonite 2g, glycerine 5g, lauric acid 0.5g add water 48.5g, through high speed
Shearing, wet process are sanded, and suspension herbicidal composition 6 is made after uniform filtration.
7 composition 7 of embodiment
Active constituent accounts for the Herbicidal combinations of 60% sulfone pyrrole grass azoles and Oxyfluorfen, in every 100g, sulfone pyrrole grass azoles
(weight ratio of sulfone pyrrole grass azoles and Oxyfluorfen is 0.5 by 20g, Oxyfluorfen 40g:1), alkyl polyoxyethylene ether sulfonate
2.5g, N- Methyl fatty acyl taurines sodium 2.5g, white carbon black 3g, glycerine 4g, lauric acid 0.8g add water 27.2g, through high speed
Shearing, wet process are sanded, and suspension herbicidal composition 7 is made after uniform filtration.
8 composition 8 of embodiment
Active constituent accounts for the Herbicidal combinations of 60% sulfone pyrrole grass azoles and Oxyfluorfen, in every 100g, sulfone pyrrole grass azoles
(weight ratio of sulfone pyrrole grass azoles and Oxyfluorfen is 1 by 30g, Oxyfluorfen 30g:1), alkyl polyoxyethylene ether sulfonate
2.5g, N- Methyl fatty acyl taurines sodium 2.5g, white carbon black 3g, glycerine 4g, lauric acid 0.8g add water 27.2g, through high speed
Shearing, wet process are sanded, and suspension herbicidal composition 8 is made after uniform filtration.
9 composition 9 of embodiment
Active constituent accounts for the Herbicidal combinations of 60% sulfone pyrrole grass azoles and Oxyfluorfen, in every 100g, sulfone pyrrole grass azoles
(weight ratio of sulfone pyrrole grass azoles and Oxyfluorfen is 1 by 40g, Oxyfluorfen 20g:0.5), alkyl polyoxyethylene ether sulfonate
2.5g, N- Methyl fatty acyl taurines sodium 2.5g, white carbon black 3g, glycerine 4g, lauric acid 0.8g add water 27.2g, through high speed
Shearing, wet process are sanded, and suspension herbicidal composition 9 is made after uniform filtration.
Determination of activity
1, test objective
Composition soil spraying treatment of the invention is evaluated to major target herba digitariae, barnyard grass, herba setariae viridis, Chenopodiaceae, Amaranthus retroflexus, horse
The activity of weeding of bitterroot.
2, test medicine
Test medicine:Composition 1~9
Comparison medicament:50% sulfone pyrrole grass azole suspending agent, 50% Oxyfluorfen suspending agent.
3, experimental design
A blank is arranged in Examples 1 to 9 composition, 50% sulfone pyrrole grass azole suspending agent, 50% Oxyfluorfen suspending agent
Control, totally 12 processing, 4 repetitions.Pharmacy application concentration is with reference to domestic and international registered sulfone pyrrole grass azoles and Oxyfluorfen
The setting of field recommended dose, is shown in Table 4.
4, test method
Greenhouse pot culture method culture target weeds, basin alms bowl bottom placement tray keep soil using basin alms bowl bottom infiltrating irrigation mode
Wet, the weed seed that vernalization is showed money or valuables one carries unintentionally plants the earthing 2mm after soil surface, and 3WP-2000 type walking is used after 2 hours
Spray tower carries out spray processing, spouting liquid 450L/hm2, it is placed in hot-house culture observation, records symptom of chemical damage.It uses within 21 days after medicine
Growth inhibition assay calculates the fresh weight preventive effect of each processing weeds, evaluates the activity of weeding of medicament.
5, test result
21d after medicine measures each target weeds aerial part fresh weight, calculates fresh weight inhibition rate (%), such as following table:
Each composition of table 4 is to weeds fresh weight preventive effect (21 days)
| Processing |
Dosage g/ha |
Herba digitariae |
Barnyard grass |
Dog tail |
Chenopodiaceae |
Amaranthus retroflexus |
Purslane |
Integrated control effect |
| Composition 1 |
120 |
85.5 |
95.6 |
82.3 |
92.4 |
94.6 |
96.3 |
91.1 |
| Composition 2 |
120 |
89.3 |
96.6 |
92.7 |
91.6 |
89.8 |
94.7 |
92.5 |
| Composition 3 |
120 |
95.3 |
96.1 |
95.7 |
87.7 |
81.3 |
87.4 |
90.6 |
| Composition 4 |
120 |
89.7 |
94.2 |
84.1 |
93.4 |
96.1 |
98.2 |
92.6 |
| Composition 5 |
120 |
94.2 |
96.9 |
86.6 |
90.8 |
92.4 |
94.5 |
92.6 |
| Composition 6 |
120 |
97.5 |
100 |
97.0 |
85.7 |
86.4 |
85.7 |
92.1 |
| Composition 7 |
120 |
83.4 |
92.3 |
85 |
94.3 |
94 |
95.4 |
90.7 |
| Composition 8 |
120 |
87.9 |
92.7 |
95.3 |
93.5 |
93.6 |
92.7 |
92.6 |
| Composition 9 |
120 |
94.8 |
99.1 |
96.8 |
90.2 |
84.8 |
89.0 |
92.5 |
| 50% sulfone pyrrole grass azole suspending agent |
120 |
93.7 |
87.5 |
91.3 |
89.4 |
67.5 |
54.6 |
80.7 |
| 50% Oxyfluorfen suspending agent |
120 |
32.0 |
49.1 |
33.7 |
86.9 |
84.1 |
82.9 |
61.5 |
The results show that sulfone pyrrole grass azoles is mixed with Oxyfluorfen can effectively to prevent and kill off the gramineae weeds such as herba digitariae, barnyard grass, dog tail
And the broadleaf weeds such as Amaranthus retroflexus, purslane, under 120g ai/ha dosage, sulfone pyrrole grass azoles and Oxyfluorfen 2:1~1:2 ratios
It uses with to 90% or more weeds integrated control effect, mix weeding advantage is clearly.
Three, the field efficacy lasting period
1, test objective
Evaluate the composition soil spraying treatment activity of weeding lasting period of the invention.
2, test medicine
Test medicine:Composition 4~6.
Comparison medicament:50% sulfone pyrrole grass azole suspending agent, 50% Oxyfluorfen suspending agent, 960g/L S-metolachlor cream
Oil.
3, experimental design
4~6 composition of embodiment, 50% sulfone pyrrole grass azole suspending agent, 50% Oxyfluorfen suspending agent, 960g/L essence isopropyl
A blank control is arranged in alachlor missible oil, totally 10 processing, 4 repetitions.Pharmacy application concentration is with reference to registered both at home and abroad
The setting of the field recommended dose of sulfone pyrrole grass azoles and Oxyfluorfen.
4, test method
Test site selects prepartion of land, and soil moisture is moderate, and soil moisture content is good, the uniform plot of former years weeding control effect, in
Soil treatment, spouting liquid 450L/hm are immediately carried out after peanut seeding2.Each processing was calculated using growth inhibition assay in 40,60 days after medicine
The fresh weight preventive effect of weeds, evaluates the activity of weeding of medicament.
5, test result
5 each composition field fresh weight preventive effect (after application 40 days) of table
6 each composition field fresh weight preventive effect (after application 60 days) of table
The results show that the composition 4,5,6 is in 120g ai/hm240 days fresh weight preventive effects 88.1% in field under dosage~
93.2%, preventive effect remains to maintain 87.2%~89.2% within 60 days, in dosage 240g ai/hm2When field 60 days fresh weight preventive effects it is equal
92% or more.Compared with two kinds of effective components are administered alone, the composition is remarkably improved the preventive effect to Chenopodiaceae, Amaranthus retroflexus;
Compared with conventional processing soil treatment agent S-metolachlor, the composition lasting period has a clear superiority.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.