CN102835410A - Method for compound use of rice herbicide - Google Patents
Method for compound use of rice herbicide Download PDFInfo
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- CN102835410A CN102835410A CN2012103567683A CN201210356768A CN102835410A CN 102835410 A CN102835410 A CN 102835410A CN 2012103567683 A CN2012103567683 A CN 2012103567683A CN 201210356768 A CN201210356768 A CN 201210356768A CN 102835410 A CN102835410 A CN 102835410A
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Abstract
The invention provides a method for compound use of a rice herbicide. Quinclorac, amide herbicide, sulfonylurea herbicide and numb-taste component are compounded according to given ratio, and then directly sprayed on a stem and leaves of rice or soil after being diluted. Isoproturon is strong in complementarity after being mixed with the amide herbicide and the sulfonylurea herbicide; the synergistic effect is remarkable; the herbicide controlling spectrum is enlarged; the amount of rice herbicide used is reduced, and the application period is prolonged. The numb-taste component is a botanical safener, can release poison of the herbicide on the rice, is good in environmental compatibility, and does not lead to new pressure to the environment. An experiment shows that the mixed rice herbicide can effectively prevent gramineae broad leaved weed and main weeds of cyperaceae in a paddy field and has a remarkable yield-increasing effect.
Description
Technical field
The invention belongs to Natural Medicine Chemistry agent biological pesticide technical field, be specifically related to the method for the composite use of a kind of rice herbicide.
Background technology
Paddy rice is the first crops of China, about more than 500,000,000 mu of cultivated area.According to investigations, common weeds in paddy field has kind more than 20, is main with grass family, sedge family, Alismataceae.The rice field of management of weeds not, the general underproduction 5%～10%, the serious underproduction 15%～30%, even lose and receive.Using chemical herbicide is the most effective means in the farmland weed comprehensive regulation, and herbicides for use in paddy commonly used has carbamates, amide-type, sulfonylurea, phenyl ureagroup herbicides etc.Long-term high dose is continuously used the single chemical herbicide of kind, causes herbicide residue, environmental pollution and resistance and pesticide resistance weeds developing problems easily.For further improving herbicidal effect, just must the compound chemical weed killer herbicide.Reasonably chemical herbicide composite have to enlarge kill the grass spectrum, improve herbicidal effect, prolong the optimum period for applying fertilizer, reduce dosage, lower poisoning, reduce residual, delay weed killer herbicide drug resistance and advantages such as drug-fast generation and development.Like publication number is the method that the patent of invention of CN1318295A discloses the composite use of a kind of Alon; This method be with acetamide-group herbicides and isoproturon by its active ingredient be 0.5～3.0:1 composite after, be that 20～160g/ mu is applied to the weeding of crop field by its active ingredient.Isoproturon and amide-type are composite; It is with strong complementarity; The compound synergic effect is obvious, kills the grass spectrum and enlarges, and can effectively prevent and kill off paddy field grass family, broad-leaved section weeds and sedge weed; But paddy rice is responsive unusually to most of acetamide-group herbicides, and acetamide-group herbicides produce certain poisoning to the tender paddy rice of children easily when paddy field uses.
Summary of the invention
The technical problem that the present invention will solve is that acetamide-group herbicides produce certain murder by poisoning to this sensitive crop of paddy rice easily when composite the utilization.
The technical scheme that the present invention will provide provides the method for the composite use of a kind of rice herbicide, and this method can increase the tolerance of paddy rice, is not influencing under the weed killer herbicide prerequisite active to the target weeds poisoning that cover crop selectively avoids weed killer herbicide.This method be with dichloro quinolinic acid, acetamide-group herbicides, sulfonylurea herbicide and pepper numb-taste component in its active ingredient weight ratio ratio that is 30～48:0.5～3:0.01～0.3:3～7 composite after; Be sprayed in stems and leaves of rice or the soil; By its active ingredient, the amount of application of this paddy rice complex weedicide is 20～200g/ mu.
Above-mentioned pepper numb-taste component is prepared by following method: get the Chinese prickly ash seed and pulverize, 1～2MPa, 190～210 ℃ of following boilings 15～20 minutes, filter, filtrating is staticly settled, get the supernatant decolouring, concentrate in 45 ℃ of water-bath rotary evaporations, promptly get pepper numb-taste component.
Above-mentioned pulverizing is meant the Chinese prickly ash seed is crushed to 30～80 order fine powders.
Above-mentioned acetamide-group herbicides are selected from one or more in alachlor, Acetochlor, the third careless amine, butachlor, isopropyl methoxalamine, propisochlor and the naphthalene propionyl grass amine.
Above-mentioned sulfonylurea herbicide is selected from that bensulfuron-methyl, chlorine sulphur are grand, in tribenuron-methyl, metsulfuron-methyl, triasulfuron, thifensulfuronmethyl and the Sulfosulfuron one or more.
After above-mentioned each component is composite in proportion, can add corresponding adjuvants, be made into suspending agent, wetting powder or missible oil and use.
The effect of each component of complex weedicide is following among the present invention:
Sulfonylurea herbicide can be prevented and kill off most of broad leaved weeds and sedge weed, and is as safe as a house to paddy growth.But it is invalid to annual gramineous weed.
Acetamide-group herbicides have the herbicidal effect height, selectivity is strong, and most of annual gramineous weeds are had special efficacy, and price is cheaper, in plant corpus and in the soil environment, are easy to degraded, and volatility is little, and unionization is to advantages such as mammal low toxicities.But relatively poor to broad leaved weed and perennial weed preventive effect, the grass spectrum is narrower extremely, and most kinds are processing soil treatment agents, only can before crop is broadcast the back seedling, use, and can only kill the weeds of firm sprouting, and invalid to the weeds that emerged, operating period and lasting period are shorter.
Dichloro quinolinic acid belongs to hormonal quinoline carboxylic acid weed killer herbicide, and it is barnyard grass grass and working life very long to be mainly used in control, and 1～7 leaf phase all had little, and good to rice safety property.
Compared with prior art, its beneficial effect has:
1) ternary built broad weed-killing spectrum, drug effect height have reduced consumption separately, and crop safety is improved.A drug, promptly most weeds harm of controlled paddy field reduce spraying times, reduce production costs.
2) adopting pepper numb-taste component is the plant safener, derives from plant, and Environmental compatibility is good, can not cause new pressure to environment, can effectively reduce the murder by poisoning of acetamide-group herbicides to paddy rice.
The formulation that 3) can prepare is various, can be made into outside wetting powder, the missible oil, can also process suspended emulsion, and is water-soluble better, and the preventive effect of paddy field weed all is significantly improved.
4) operating period prolongs, before transplanted rice field is transplanted, transplant after, rice direct seeding field after planting germinate preceding and emerge after all can use, can both obtain good herbicidal effect.
Embodiment
Come further to set forth the present invention with specific embodiment below, but not as limitation of the present invention.
Embodiment 1
With dichloro quinolinic acid, alachlor, bensulfuron-methyl and pepper numb-taste component in its active ingredient weight ratio ratio that is 30:0.5:0.01:3 composite after; Process suspending agent; Be sprayed on the stems and leaves of rice or in the soil, by its active ingredient, the amount of application of this paddy rice complex weedicide is a 20g/ mu.
The preparation of pepper numb-taste component: get the Chinese prickly ash seed and be crushed to 30 order fine powders,, filter, filtrating is staticly settled, get the supernatant decolouring, concentrate, promptly get pepper numb-taste component in 45 ℃ of water-bath rotary evaporations 1MPa, 190 ℃ of following boilings 15 minutes.
Reference examples 1
This reference examples is identical with embodiment 1, does not only have pepper numb-taste component in the component of complex weedicide.
Reference examples 2
This reference examples is identical with embodiment 1, and the weight ratio of the active ingredient of each component is dichloro quinolinic acid, alachlor, bensulfuron-methyl and pepper numb-taste component=30:1.5:0.01:3 in the complex weedicide.
Reference examples 3
This reference examples is identical with embodiment 1, and the weight ratio of the active ingredient of each component is dichloro quinolinic acid, alachlor, bensulfuron-methyl and pepper numb-taste component=30:3:0.01:3 in the complex weedicide.
Embodiment 2
With dichloro quinolinic acid, Acetochlor, chlorine sulphur grand and pepper numb-taste component in its active ingredient weight ratio ratio that is 48:3:0.3:7 composite after; Process wetting powder; Be sprayed on the stems and leaves of rice or in the soil, by its active ingredient, the amount of application of this paddy rice complex weedicide is a 200g/ mu.
The preparation of pepper numb-taste component: get the Chinese prickly ash seed and be crushed to 80 order fine powders,, filter, filtrating is staticly settled, get the supernatant decolouring, concentrate, promptly get pepper numb-taste component in 45 ℃ of water-bath rotary evaporations 2MPa, 210 ℃ of following boilings 20 minutes.
Embodiment 3
With dichloro quinolinic acid, the third careless amine, tribenuron-methyl and pepper numb-taste component in its active ingredient weight ratio ratio that is 40:1.5:0.15:5 composite after; Process missible oil; Be sprayed on the stems and leaves of rice or in the soil, by its active ingredient, the amount of application of this paddy rice complex weedicide is a 120g/ mu.
The preparation of pepper numb-taste component: get the Chinese prickly ash seed and be crushed to 50 order fine powders,, filter, filtrating is staticly settled, get the supernatant decolouring, concentrate, promptly get pepper numb-taste component in 45 ℃ of water-bath rotary evaporations 1.5MPa, 200 ℃ of following boilings 18 minutes.
Embodiment 4
With dichloro quinolinic acid, butachlor, metsulfuron-methyl and pepper numb-taste component in its active ingredient weight ratio ratio that is 30:3:0.01:7 composite after; Process suspending agent; Be sprayed on the stems and leaves of rice or in the soil, by its active ingredient, the amount of application of this paddy rice complex weedicide is a 20g/ mu.
The preparation of pepper numb-taste component: get the Chinese prickly ash seed and be crushed to 30 order fine powders,, filter, filtrating is staticly settled, get the supernatant decolouring, concentrate, promptly get pepper numb-taste component in 45 ℃ of water-bath rotary evaporations 1.5MPa, 200 ℃ of following boilings 18 minutes.
Embodiment 5
With dichloro quinolinic acid, isopropyl methoxalamine, triasulfuron and pepper numb-taste component in its active ingredient weight ratio ratio that is 30:0.5:0.01:3 composite after; Process missible oil; Process wetting powder; Be sprayed on the stems and leaves of rice or in the soil, by its active ingredient, the amount of application of this paddy rice complex weedicide is a 20g/ mu.
The preparation method of pepper numb-taste component is identical with embodiment 1.
Embodiment 6
With dichloro quinolinic acid, propisochlor, thifensulfuronmethyl and pepper numb-taste component in its active ingredient weight ratio ratio that is 48:3:0.3:7 composite after; Process wetting powder; Be sprayed on the stems and leaves of rice or in the soil, by its active ingredient, the amount of application of this paddy rice complex weedicide is a 200g/ mu.
The preparation method of pepper numb-taste component is identical with embodiment 2.
Embodiment 7
With dichloro quinolinic acid, naphthalene propionyl grass amine, Sulfosulfuron and pepper numb-taste component in its active ingredient weight ratio ratio that is 40:1.5:0.15:5 composite after; Process suspending agent; Be sprayed on the stems and leaves of rice or in the soil, by its active ingredient, the amount of application of this paddy rice complex weedicide is a 120g/ mu.
The preparation method of pepper numb-taste component is identical with embodiment 3.
Experimental example 1
Be the method for the checking rice herbicide of the present invention composite use effect after the using of paddy field, the applicant has carried out under the lab simulation paddy field environment paddy field main weeds barnyard grass grass, moleplant seed, nutgrass flatsedge, Eclipta prostrata, the careless efficiency test in three schools.
1, supplies the examination weed killer herbicide: composite and use weed killer herbicide by the embodiment of the invention 1～7 said method.
2, supply the examination weeds: barnyard grass grass, moleplant seed, polygamy nutgrass flatsedge, Eclipta prostrata, three schools grass
3, test method
It is the special-purpose soil of experiment of not medication plot collection that soil is used in test, gets bore 30cm, dark 10cm plastic bowl, and soil is filled to 1/2 height.After adding water and treating that soil is fully moistening, 5 kinds that presoaking and germinating is showed money or valuables one carries unintentionally supply weed seeds to broadcast in the plastic bowl, and every kind of weeds guarantee 40～60 seeds.After planting, be covered with the thick mixed husky fine earth of 0.5～1.0cm, add water and make that soil suction is saturated to be placed on the incubation growth greenhouse in, temperature remains on 25～35 ℃ in the room temperature, and air humidity is more than 50%, and the medicine processing was as a child sprayed in sowing 24.Each handles repetition 4 times, and other establishes blank, 30 days " Invest, Then Investigate " plant of dispenser preventive effect.
4, conclusion (of pressure testing)
See table 1
Table 1 medication is weeds fresh weight preventive effect result after 30 days
Can know by last table, on paddy field, use according to the method for the composite use of rice herbicide of the present invention, better to the preventive effect of barnyard grass grass, moleplant seed, polygamy nutgrass flatsedge, Eclipta prostrata, three schools grass.
Experimental example 2
For the protective effect that the composite method for using of checking rice herbicide of the present invention plays paddy rice, carry out this test.
Load onto the 200g air dried soil at the plastic casing of 13cm * 8cm * 6cm, add 100ml water, rice paddy seed was soaked seed 24 hours down for 28 ℃; 30 ℃ of following vernalization 12 hours is chosen planting seed of the same size in plastic casing, 15 in every box after showing money or valuables one carries unintentionally; Place 26 ℃ of day temperatures; At 22 ℃ of nights, intensity of illumination is to cultivate in the incubator of 6000lux, and day-night cycle is 12 hours.Treat the one leaf phase of paddy rice, handle paddy rice, handle 3 repetition at every turn, blank control group is set, continue according to above-mentioned condition illumination cultivation 10 days mensuration paddy rice plant height and strain fresh weight with the embodiment of the invention 1 and reference examples thereof 1～3 said method.The result sees the following form 2.
Table 2
| Medicament | Plant height (cm) | Strain fresh weight (g/10 strain) |
| Embodiment 1 | 24.32（233.87） | 0.712（182.41） |
| Reference examples 1 | 10.36 | 0.402 |
| Reference examples 2 | 21.89（215.47） | 0.699（179.32） |
| Reference examples 3 | 15.78（154.78） | 0.621（161.21） |
| Blank control group | 22.32 | 0.702 |
Plant height is the mean value of 10 strains, is growth rate in the bracket.
Can know that by last table pepper numb-taste component is comparatively obvious to the protective effect of paddy rice as the plant safener.
Claims (6)
1. the method for the composite use of rice herbicide; It is characterized in that: with dichloro quinolinic acid, acetamide-group herbicides, sulfonylurea herbicide and pepper numb-taste component in its active ingredient weight ratio ratio that is 30～48:0.5～3:0.01～0.3:3～7 composite after; Be sprayed on the stems and leaves of rice or in the soil; By its active ingredient, the amount of application of this paddy rice complex weedicide is 20～200g/ mu.
2. the method for the composite use of rice herbicide according to claim 1; It is characterized in that: said pepper numb-taste component is prepared by following method: get the Chinese prickly ash seed and pulverize; 1～2MPa, 190～210 ℃ of following boilings 15～20 minutes, filter, filtrating is staticly settled; Get the supernatant decolouring, concentrate, promptly get pepper numb-taste component in 45 ℃ of water-bath rotary evaporations.
3. the method for the composite use of rice herbicide according to claim 2 is characterized in that: described pulverizing is meant the Chinese prickly ash seed is crushed to 30～80 order fine powders.
4. the method for the composite use of rice herbicide according to claim 1 is characterized in that: said acetamide-group herbicides are selected from one or more in alachlor, Acetochlor, the third careless amine, butachlor, isopropyl methoxalamine, propisochlor and the naphthalene propionyl grass amine.
5. the method for the composite use of rice herbicide according to claim 1 is characterized in that: said sulfonylurea herbicide is selected from that bensulfuron-methyl, chlorine sulphur are grand, in tribenuron-methyl, metsulfuron-methyl, triasulfuron, thifensulfuronmethyl and the Sulfosulfuron one or more.
6. according to the method for the composite use of each described rice herbicide of claim 1～5, it is characterized in that: after each component is composite in proportion, can add corresponding adjuvants, be made into suspending agent, wetting powder or missible oil and use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103567683A CN102835410A (en) | 2012-09-21 | 2012-09-21 | Method for compound use of rice herbicide |
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| CN2012103567683A CN102835410A (en) | 2012-09-21 | 2012-09-21 | Method for compound use of rice herbicide |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103535344A (en) * | 2013-09-22 | 2014-01-29 | 南通嘉禾化工有限公司 | Sulfosulfuron suspension for weed control |
| CN105660663A (en) * | 2016-04-21 | 2016-06-15 | 肖锴 | Lawn herbicide with pre-emergence effect and post-emergence effect and use method thereof |
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2012
- 2012-09-21 CN CN2012103567683A patent/CN102835410A/en active Pending
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103535344A (en) * | 2013-09-22 | 2014-01-29 | 南通嘉禾化工有限公司 | Sulfosulfuron suspension for weed control |
| CN105660663A (en) * | 2016-04-21 | 2016-06-15 | 肖锴 | Lawn herbicide with pre-emergence effect and post-emergence effect and use method thereof |
| CN105660663B (en) * | 2016-04-21 | 2018-02-23 | 肖锴 | A kind of lawn herbicide for having concurrently before bud and being acted on after bud and its application method |
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Application publication date: 20121226 |