CN104770385B - A kind of Oryza sativa L. post-emergence complex weedicide - Google Patents
A kind of Oryza sativa L. post-emergence complex weedicide Download PDFInfo
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- oryza sativa
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Abstract
The invention discloses a kind of Oryza sativa L. post-emergence complex weedicide, include penoxsuam and triazole acyl grass amine, penoxsuam and weight/mass percentage composition is Oryza sativa L. post-emergence complex weedicide total amount the 0.1 85% of triazole acyl grass amine, wherein, the weight ratio of penoxsuam and triazole acyl grass amine is 1.6 2.4:12 20.The present invention can prevent and kill off rice terrace with the annual gramineous weed such as Semen Euphorbiae, barnyard grass, can prevent and kill off broad leaved weed and sedge weed again, herbicidal effect is notable, particularly Semen Euphorbiae, barnyard grass are had significant synergies, on succession crop without impact, be a kind of preferably herbicide.
Description
Technical field
The present invention relates to herbicide field, specifically a kind of Oryza sativa L. post-emergence complex weedicide.
Background technology
Oryza sativa L. is not only the main cereal crops of China, one of Ye Shi world staple food crop.In the world
Nearly half population, including the most whole East Asia and the population in Southeast Asia, all with rice for food.Produce throughout removing
Each continent beyond the South Pole.Eighties of last century late period, View of World Rice annual production average out to about 400,000,000,000 kilograms,
Cultivated area about 1.45 hundred million hectares.China's rice growing face accounts for the 1/4 of whole nation cereal crops, the most about 3500
Many ten thousand hectares, yield then accounts for more than half.No matter cultivated area and yield, in China cereal crops all
Rank first.The rice field of all rice workspaces of China, always has a large amount of weeds to occur.Medium crop smothering area accounts for always
More than the 46% of cultivated area, wherein serious injured area is more than 11.5%, the most every year loss grain 200
Many hundred million kilograms.Therefore, the use ratio of domestic water herbicides for use in paddy nearly reaches 100%, and its dosage is very
Big.
Along with the development of agricultural cience and farming techniques, the popularization and application of chemical herbicide as saving of labor, save time, save
One of strong well stimulation of cost-saving.Owing to using the medicament such as bensulfuron-methyl, pyrazosulfuron to make originally continuously
Heavier malignant weed Herba potamogetonis distincti and Herba Cyperi Difformis harm is occurred progressively to alleviate, and perennial Sagittaria trifolia L. Var. Angusti-folia(Sieb.) Kitag.(Sagittaria sagittifolia L.),
The harm such as Rhizoma Alismatis, sedge weed and annual Monochoria korsakowii increases the weight of, due to penoxsulam amine herbicide pair
Perennial flat stalk grass, firefly Lin cause serious harm in many areas.
Penoxsuam is to belong to aryloxyphenoxypropionic class herbicide.Rice terrace selective herbicide, both may be used
To make stem and leaf process, it is also possible to make bud pre-treatment.Penoxsuam is efficient to barnyard grass, to sedge weed and
Broad leaved weed also has good preventive effect, bad to Semen Euphorbiae effect.
Triazole acyl grass amine is by the triazolineone herbicide of Hokko Chemical Industry Co., Ltd. of Japan exploitation, its
Mechanism of action is proporphyrinogen oxidase inhibitor, by protoporphyrinogen during suppression chlcrophyll biosynthesis
Oxidase and cause cell membrane disruption, make blade withered, dead rapidly.All can use before bud, after bud, main
It is used for preventing and kill off rice terrace grassy weed, sedge weed and part broad leaved weed.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Oryza sativa L. post-emergence complex weedicide, can prevent and kill off standing grain originally
Section weeds, can prevent and kill off again broad leaved weed, and respond well.
The technical scheme is that
A kind of Oryza sativa L. post-emergence complex weedicide, includes penoxsuam and triazole acyl grass amine, penoxsuam
With 0.1 85% that the weight/mass percentage composition of triazole acyl grass amine is described Oryza sativa L. post-emergence complex weedicide total amount, its
In, the weight ratio of penoxsuam and triazole acyl grass amine is 1.6 2.4:12 20.
Described Oryza sativa L. post-emergence complex weedicide also includes dispersant, wetting agent, disintegrating agent, binding agent
And reagent carrier, wherein, the percentage by weight of dispersant, wetting agent, disintegrating agent and binding agent is 0.1-10%;
0.1-10%;0.1-20%;0.1-20%, reagent carrier supplies 100%.
The weight ratio of described penoxsuam and triazole acyl grass amine is 2:16.
The dosage form of described Oryza sativa L. post-emergence complex weedicide is for dispersibling oil-suspending agent, granule, wettable powder
Agent, water dispersible granules, cream, aqueous emulsion, microemulsion or suspending agent.
The invention have the benefit that
The synergy after mixture is evaluated, result display penoxsuam, three by the co-toxicity coefficient method of Sun Yunpei
Azoles acyl grass amine is significantly greater than 120 in the co-toxicity coefficient that 1.6 2.4:12 20 ratios are compounding, reaches significantly to increase
Effect effect, illustrates that penoxsuam, triazole acyl grass amine all have potentiation in 1.6 2.4:12 20 ratio mixtures
Effect, wherein, it is maximum, to one that penoxsuam, triazole acyl grass amine press 2:16 effect compound synergic effect
Nian Shengdan broadleaf weed has significant synergies.
Security test test to Oryza sativa L. shows, penoxsuam triazole acyl grass amine compounds stem and leaf and processes,
The ED of suppression paddy growth 10%10=1968.0878, the ED of suppression weed growth 90%90=253.2570, select
Property coefficient is 1968.0878/253.2570=7.77 > 2, it is believed that this medicament has obvious selectivity, five fluorine sulphurs
Grass amine triazole acyl grass amine has good safety to Oryza sativa L..
Complex weedicide of the present invention is shown by the field control effectiveness test of 2 years, in the Oryza sativa L. 3 leaf phase, miscellaneous
Grass 2-5 leaf does not waits the phase, and Oryza sativa L. has no symptom of chemical damage from dispenser to period of maturation, to rice safety.Preventing of weeds
Imitating and reach more than 80% in 10 days, within 40 days, reach more than 92%, along with the increase of dosage, preventive effect is remarkably reinforced,
Dispenser can control the weeds in the whole trophophase of crop, and not only herbicidal effect is notable, and to environment
Close friend, on second stubble crop without impact.
Compared with prior art, complex weedicide of the present invention can prevent and kill off grassy weed, can prevent and kill off again
Broad leaved weed and sedge weed, to rice safety, and on succession crop without impact, have good application
Prospect.
Detailed description of the invention
Embodiment 1
A kind of Oryza sativa L. post-emergence complex weedicide, its dosage form is 60% penoxsuam triazole acyl grass amine wettable powder
Agent, 60% refers to that penoxsuam and triazole two kinds of active components of acyl grass amine account for the percentage ratio of gross weight;It includes
Following components: 10kg penoxsuam, 50kg triazole acyl grass amine, 4kg dispersant di-2-ethylhexylphosphine oxide LOMAR PWA EINECS 246-676-2
Sodium (NNO), 3kg wetting agent sodium lauryl sulphate (K12), 4kg disintegrating agent white carbon, 4kg
Binding agent carboxymethyl cellulose (CMC), carrier precipitated calcium carbonate 25kg.Said components is adequately mixed, gas
Stream is pulverized, is mixed to get product.
Embodiment 2
A kind of Oryza sativa L. post-emergence complex weedicide, its dosage form is that 18% penoxsuam triazole acyl grass amine dispersibles oil
Suspending agent, 18% refers to that penoxsuam and triazole two kinds of active components of acyl grass amine account for the percentage ratio of gross weight, including
Have a following components: 2kg penoxsuam, 16kg triazole acyl grass amine, 8kg dispersant block polyether non-from
Sub-surface activating agent (Pluronic125), 5kg wetting agent propylene glycol, 0.5kg disintegrating agent xanthan gum,
1kg binding agent-methylated vegetable oil, carrier water 67.5kg.Said components is through being sufficiently mixed allotment, ball milling
Pulverize, adjust, be packaged to be product.
Embodiment 3
A kind of Oryza sativa L. post-emergence complex weedicide, its dosage form is 78% penoxsuam triazole acyl grass aqueous amine dispersible granule
Agent, 78% refers to that penoxsuam and triazole two kinds of active components of acyl grass amine account for the percentage ratio of gross weight, include with
Lower component: 6kg penoxsuam, 72kg triazole acyl grass amine, 7kg dispersant naphthalene sulphonate formaldehyde is condensed
Thing (D-425), the mixture (EFW) of 5kg wetting agent alkylnaphthalene sulfonate and anion wetting agent,
5kg disintegrating agent ammonium sulfate, 2kg binding agent polyvinyl alcohol (PVA), carrier Kaolin 3kg.Above-mentioned group
Lease making is sufficiently mixed, comminution by gas stream, mixing, pelletize, be dried and screening obtain product.
Embodiment 4
Penoxsuam and triazole acyl grass amine stem and leaf process synergy toxicity and measure:
1, test objective: under greenhouse experiment, uses pot-culture method, studies penoxsuam, triazole
The herbicidal effect of acyl grass amine binary built, and it is mixed to evaluate the two different proportion by the co-toxicity coefficient method of Sun Yunpei
After synergy type, the rational mixture for penoxsuam and triazole acyl grass amine provides scientific basis.
2, for studying thing: rice varieties is rich two excellent;For examination weeds: Semen Euphorbiae
(Leptochloachinensis (L.) Nees), barnyard grass (Echinochloa crusgalli (L.)
Beauv.), mexicana (Rotala indica (Willd.) Koehne), Herba monochoriae vaginalis (Monochoria
Vaginalis (Burm.f.) Presl), on Herba Cyperi Difformis (Cyperus difformis L.)
Gathering seed in 1 year field, germination percentage is more than 85%).
3, experimental condition and the cultivation of examination material: carry out the cultivation of test material, temperature 25 in illumination cultivation room
-30 DEG C.Choosing a diameter of 15cm, height is the vinyon basin alms bowl of 15cm.During test, miscellaneous by every kind
Grass seed 30-40 grain is uniformly put in basin, earthing 0.5cm, and weeds should supplement the required water of growth during cultivating
Point.Regular moisturizing (not watering in 2 days after medicine) in the way of the infiltration of bottom, keeps soil moisture.
4, reagent agent: the former medicine of 98% penoxsuam (The Dow Agrosciences, LLC.);95% triazole acyl grass amine
Former medicine (is provided for oneself).Weigh quantitative above-mentioned former medicine with electronic balance, add appropriate emulsifying agent, use acetone
Dissolve, finally with the Tween 80 aqueous solution of 0.1%, above-mentioned former medicine is diluted to desired concn.
5, penoxsuam and the synergy of triazole acyl grass amine: include penoxsuam single dose, triazole acyl
Grass amine single dose and 5 penoxsuams and triazole acyl grass amine mixture preparation, wherein, the ratio in mixture preparation
Active component weight ratio for penoxsuam Yu triazole acyl grass amine;Separately setting blank, each test processes
It is repeated 4 times.Treatment agent dosage refers to table 1.
Table 1 test process and test level (concentration ga.i./kg)
6, application method: in Oryza sativa L. 3 leaf phase, weeds 2-4 leaf phase stem and leaf spraying treatment.Spray medicine uses can
The indoor crown-block type atomizing tester of speed governing, simulation field conventional spraying methods.Shower nozzle is Fan spray head,
Model is Teejer8002E type, spray value 40 kgs/acre.Spray height 0.5 meter, spraying swath 0.7 meter,
Leg speed 0.224 meter per second.Atomisation pressure 2.0 MPas, flow 697 liters/min.Tested in the Oryza sativa L. 3-5 leaf phase
Carry out reagent spray process, dispenser 1 time.
7, investigation method: itemized record Oryza sativa L. and the damage symptoms of weeds, 20d after medicine after dispenser, carries out fresh
Remeasurement, and compared with control treatment, calculate fresh weight preventive effect.
Synergy type after the co-toxicity coefficient method evaluation of result of the test Sun Yunpei is mixed.According to SUN, Y-P
(Sun Yunpei) method calculates its actual toxicity index, mixture theory toxicity index, co-toxicity coefficient.With concentration pair
Number is X, and pest and disease damage preventive effect probit value is Y, seeks regression equation.
Actual toxicity index=standard agent LD50The LD of/mixture50×100;
Theoretical toxicity index=∑ (percentage of this medicament effective ingredient of the toxicity index of reagent agent × in mixture
Rate);
Actual toxicity index/theory toxicity index × 100 of co-toxicity coefficient=mixture;
With triazole acyl grass amine as standard agent in test.
Criterion: co-toxicity coefficient<80 is antagonism, is summation action between 80-120,>120
For potentiation.
8, result and analysis:
Penoxsuam and the synergy of triazole acyl grass amine:
Penoxsuam and the triazole acyl grass amine mixture fresh weight preventive effect to weeds, the results are shown in Table 2.
The 20d fresh weight preventive effect to weeds after table 2 penoxsuam and triazole acyl grass amine mixture medicine
PS: in table, prevention effect is the meansigma methods of four data.
As shown in Table 2: medicament is to the toxic action situation of weeds and preventive effect.
Penoxsuam and the synergy to weeds of the triazole acyl grass amine mixture:
The virulence regression equation of each test group, LD is calculated by formula50, actual toxicity index, theoretical virulence refer to
Number and co-toxicity coefficient.Specifically it is shown in Table 3.
Table 3: penoxsuam and the synergy to weeds of the triazole acyl grass amine mixture
As shown in Table 3, the co-toxicity coefficient processing C, D, E, F, G is respectively as follows: 150.45,182.06,
228.03,151.50,101.55, co-toxicity coefficient is all higher than 100, has addition or potentiation;Its
In, the co-toxicity coefficient processing C, D, E, F is all significantly greater than 120, reaches potentiation, wherein processes E
Co-toxicity coefficient maximum, reach 228.03, have significant synergies.
Conclusion (of pressure testing): by test, penoxsuam, triazole acyl grass amine press (1.6 2.4): (12
20) ratio mixture all has potentiation, and wherein, penoxsuam, triazole acyl grass amine press about 2:16
Mixture is more suitable, has significant synergies Semen Euphorbiae, barnyard grass, broad leaved weed and sedge weed.
Embodiment 5
Penoxsuam triazole acyl grass amine compounds stem and leaf process and tests the Security test of Oryza sativa L.:
1, test objective: under greenhouse experiment, uses pot-culture method, studies penoxsuam, triazole
Acyl grass amine binary built stem and leaf processes safety to Oryza sativa L., reasonable for penoxsuam and triazole acyl grass amine
Mixture provides scientific basis.
2, for studying thing: rice varieties is rich two excellent;For examination weeds: Semen Euphorbiae
(Leptochloachinensis (L.) Nees), barnyard grass (Echinochloa crusgalli (L.)
Beauv.), mexicana (Rotala indica (Willd.) Koehne), Herba monochoriae vaginalis (Monochoria
Vaginalis (Burm.f.) Presl), on Herba Cyperi Difformis (Cyperus difformis L.)
Gathering seed in 1 year field, germination percentage is more than 85%).
3, in illumination cultivation room, carry out the cultivation of test material, temperature 25-30 DEG C.Choose a diameter of 15cm,
It it is highly the vinyon basin alms bowl of 15cm.During test, by 20, every kind weed seed 30 of rice paddy seed
Uniformly put into earthing 0.5cm in basin for-40, put into temperature indoor cultivation (25-30 DEG C), rice seedlings and miscellaneous
Grass should supplement the required moisture of growth during cultivating.Stay the Seedling that 10 strains are healthy and strong after all sprouting, treat that rice seedlings grows to 34
Leaf and weeds grow to dispenser when 25 and process.In the way of top-watered, regular moisturizing (is not watered in 2 days after medicine
Water), keep soil moisture.
4, reagent agent: the former medicine of 98% penoxsuam (The Dow Agrosciences, LLC.);95% triazole acyl grass amine
Former medicine (is provided for oneself).Weigh quantitative former medicine with electronic balance, add appropriate emulsifying agent, with acetone solution,
Finally with the Tween 80 aqueous solution of 0.1%, above-mentioned former medicine is diluted to desired concn.
5, application method: in Oryza sativa L. 3 leaf phase, weeds 2-4 leaf phase stem and leaf spraying treatment.Spray medicine uses can
The indoor crown-block type atomizing tester of speed governing, simulation field conventional spraying methods.Shower nozzle is Fan spray head,
Model is Teejer8002E type, spray value 40 kgs/acre.Spray height 0.5 meter, spraying swath 0.7 meter,
Leg speed 0.224 meter per second.Atomisation pressure 2.0 MPas, flow 697 liters/min.Test and enter in the Oryza sativa L. 3 leaf phase
Row reagent spray processes, dispenser 1 time.
6, investigation and computational methods:
After dispenser, investigate each process Oryza sativa L. with or without symptom of chemical damage, if having, itemized record symptom of chemical damage, grade,
After medicine 20 days, measure each process Oryza sativa L. fresh weight, calculate fresh weight inhibition, with clear and definite test medicine to Oryza sativa L.
Safety.
The damage symptoms (such as growth inhibited, chlorosis, deformity etc.) of itemized record weeds after dispenser, after medicine
20 days, weigh each process weeds aerial parts fresh weight, calculate the fresh weight preventive effect of weeds.
With DPS software, the logarithm value of drug dose and the probability value of Oryza sativa L. fresh weight inhibition are carried out regression analysis,
Calculate dosage ED when correlation coefficient and suppression crop 10%10, and dosage ED during suppression weeds 90%90, ask
Go out selectivity index.Wherein, selectivity index=ED10/ED90。
7, result and analysis:
The penoxsuam triazole acyl grass amine stem and leaf process safety to Oryza sativa L.:
Safety evaluatio standard is shown in Table 4, within after dispenser 3 days, observes, and penoxsuam triazole acyl grass amine is highly concentrated
Degree 1600mg/kg processes indivedual Oryza sativa L. lobus cardiacuses slight jaundice, and growth is slightly suppressed, at other concentration
Reason paddy growth is normal;After dispenser 7-12 days, it is normal that low concentration processes Oryza sativa L. growing way, 1600mg/kg process
Oryza sativa L. the most slowly recovers.
Table 4 activity of weeding and crop safety ocular estimate evaluation criterion
After dispenser 20 days, (60% referred to penoxsuam to 60% penoxsuam triazole acyl grass aqueous amine dispersible granule
With the percentage ratio that triazole two kinds of active components of acyl grass amine account for gross weight) inhibitory action of Oryza sativa L. is shown in Table 5.
The table 5 60% penoxsuam triazole acyl grass aqueous amine dispersible granule inhibitory action to Oryza sativa L.
Process | Mass concentration (mg/kg) | 20d suppression ratio (%) |
100 | 0.17 | |
200 | 0.65 | |
60% penoxsuam triazole acyl grass amine mixture | 400 | 1.36 |
800 | 3.54 | |
1600 | 8.67 | |
Comparison | Clear water | / |
Table 6 is after dispenser 20 days, and (60% refers to five fluorine to 60% penoxsuam triazole acyl grass aqueous amine dispersible granule
Sulphur grass amine and triazole two kinds of active components of acyl grass amine account for the percentage ratio of gross weight) to the toxic action situation of weeds and
Preventive effect.
The table 6 60% penoxsuam triazole acyl grass aqueous amine dispersible granule fresh weight preventive effect to weeds
This medicament is to the toxic action situation of weeds and preventive effect as shown in Table 6, calculates its each poison by formula
Power regression equation, LD50, it is listed in table 7.
Table 7 virulence regression equation and LD50
As shown in Table 7: the LD of 63% penoxsuam triazole acyl grass aqueous amine dispersible granule50For: 73.0885,
95% confidence interval is 63.4344 84.2118.
Penoxsuam triazole acyl grass amine stem and leaf process to Oryza sativa L. and the selectivity index of weeds: by table 5,
Table 6, tries to achieve the ED of suppression paddy growth 10% by DPS software10=1968.0878, suppress weed growth 90%
ED90=253.2570, selectivity factor is 1968.0878/253.2570=7.77 > 2, it is believed that this medicament has
There is obvious selectivity, field control effectiveness test can be carried out.
8, overall merit: this result of the test shows, penoxsuam triazole acyl grass amine stem and leaf processes high concentration
(4 times of recommended dose high dose) process can cause Oryza sativa L. yellow to Oryza sativa L., and other concentration processes and (pushes away
Recommend dosage high dose and times amount thereof) paddy growth is normal.By Toxicity Determination, penoxsuam three
Azoles acyl grass aqueous amine rice has good safety, has good prevention effect to weeds.
Embodiment 6
The field control effectiveness test of penoxsuam triazole acyl grass amine complex weedicide:
Being shown by the field control effectiveness test of 2 years, the rice striking root phase before the winter, weeds 2-5 leaf does not waits the phase,
The 18% penoxsuam triazole acyl grass amine (2% penoxsuam+16% triazole acyl grass amine) utilizing the present invention can
Dispersed oil suspending agent (OF), dosage 80,90,100,180 milliliter/mu, it is watered 40 kgs/acre and sprays,
15,40 days and period of maturation range estimation Security of rice and Weed-control effect, survey all preventive effects in 15,40 days, and result is as follows
Table 8:
Table 8
Note: in table 8, in blank, each data are weeds strain number (strain), and other each experimental group number is prevented according to for strain
Effect (%).
By range estimation, Oryza sativa L. has no symptom of chemical damage from dispenser to period of maturation, to rice safety.18% penoxsulam
The amine triazole acyl grass amine OF 80 milliliter/mu preventive effect to weeds, reaches more than 80% in 10 days, within 40 days, reaches
More than 92%, along with the increase of dosage, preventive effect is remarkably reinforced, can be to weeds at rice terrace 80 milliliter/mu
There is good herbicidal effect, compare with being used alone one of which effective ingredient, expand weed control spectrum, to standing grain
Undergraduate course weeds and broad leaved weed have obvious potentiation.Dispenser can control the whole trophophase of crop
Interior weeds, not only herbicidal effect is notable, and environmentally friendly, on second stubble crop without impact, to environment
Pollution little, to people, animal, birds and beneficial organism safety, be conducive to keeping ecological balance.It addition, this
The herbicide of invention uses physical method processing, and production technology is simple, and three-waste free discharge in production process is right
Ecological environment has no adverse effects.It it is the preferable complex weedicide of current prevention effect.
Claims (4)
1. an Oryza sativa L. post-emergence complex weedicide, it is characterized in that: include penoxsuam and triazole acyl grass amine, the weight/mass percentage composition of penoxsuam and triazole acyl grass amine is the 0.1 85% of described Oryza sativa L. post-emergence complex weedicide total amount, wherein, the weight ratio of penoxsuam and triazole acyl grass amine is 1.6 2.4:12 20.
A kind of Oryza sativa L. post-emergence complex weedicide the most according to claim 1, it is characterized in that: described Oryza sativa L. post-emergence complex weedicide also includes dispersant, wetting agent, disintegrating agent, binding agent and reagent carrier, wherein, the percentage by weight of dispersant, wetting agent, disintegrating agent and binding agent is 0.1-10%;0.1-10%;0.1-20%;0.1-20%, reagent carrier supplies 100%.
A kind of Oryza sativa L. post-emergence complex weedicide the most according to claim 1, it is characterised in that: the weight ratio of described penoxsuam and triazole acyl grass amine is 2:16.
4. according to a kind of Oryza sativa L. post-emergence complex weedicide described in claim 1 or 3, it is characterised in that: the dosage form of described Oryza sativa L. post-emergence complex weedicide is for dispersibling oil-suspending agent, granule, wettable powder, water dispersible granules, cream, aqueous emulsion, microemulsion or suspending agent.
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CN102348379A (en) * | 2009-03-11 | 2012-02-08 | 住友化学株式会社 | Herbicide composition and weed control method |
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JP2012171928A (en) * | 2011-02-22 | 2012-09-10 | Sumitomo Chemical Co Ltd | Herbicidal composition and method for killing weed |
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CN102348379A (en) * | 2009-03-11 | 2012-02-08 | 住友化学株式会社 | Herbicide composition and weed control method |
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