CN103960091A - Method for controlling and transplanting herbicide-resistant weeds in rice field - Google Patents
Method for controlling and transplanting herbicide-resistant weeds in rice field Download PDFInfo
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Abstract
The invention discloses a method for controlling and transplanting herbicide-resistant weeds in a rice field. The method includes at least one of the three following weeding measures including that first, herbicides with different types and different action mechanisms are applied to the same rice field in the same year; second, herbicides with different action position points are applied to the same rice field in the same year; third, herbicides with different types, different action mechanisms and different action position points are applied to the same rice field in different years. With the method, herbicide-resistant weeds can be effectively removed, herbicide resistance of the weeds is slowed down or avoided, the using amount of herbicide is reduced, and meanwhile the cost for farmers to use the herbicide is reduced.
Description
Technical field
The invention belongs to plant protection technology field, relate in particular to a kind of method of preventing and kill off transplanting rice field Herbicide-resistant weeds.
Background technology
Chemical weed control, with its efficient, quick, economic unique advantage, plays a part very important in Rice Production.Its promotion and application, have greatly liberated productivity, have increased substantially labor productivity, and this becomes and realizes the mechanization of farm work, the requisite advanced technology of modernization, are also the important leverages of rice high yield, stable yields simultaneously.
By the end of in March, 2014,429 biotypes of the existing 234 kinds of weeds in the whole world have produced pesticide resistance to 22 class chemical herbicides in the system of all kinds of farmlands, and infringement scope is 65 80 kinds of national crops of extend over the entire globe.Herbicide resistance has become the significant problem that farmland weed is prevented and kill off, and its generation and development are used and even China carries out at present take the weeds comprehensive regulation system that chemical herbicide is main body and proposed new challenge for the large area of chemical herbicide.China is used chemical herbicide existing more than 40 years, and large-area applications chemical herbicide also has more than 20 year, and along with the increase that increase and the selection of service life are pressed, weeds have all produced pesticide resistance to the weed killer herbicides of the long-term a large amount of uses of part.In recent years, Herbicide-resistant weeds biotype significantly increases, and this causes Rice Yield Loss Caused to be obvious ascendant trend.As the barnyard grass of the Dongting Lake Rice Areas in Hunan Province has produced serious pesticide resistance to dichloro quinolinic acid and penoxsuam.In addition, in Hubei, the province such as Jiangxi, Zhejiang, Jiangsu, Shanghai, Anhui all finds the pesticide resistance biotype of barnyard grass to dichloro quinolinic acid.The barnyard grass of Liaoning and Guangdong Dao Qu has also produced obvious pesticide resistance to butachlor and benthiocarb.Monochoria korsakowii and the Monochoria vaginalis of anti-bensulfuron-methyl and pyrazosulfuron in rice district, the northeast of China, have been found.The generation of these herbicide resistances be all due to for a long time single, use the weed killer herbicide of same type, the same mechanism of action to form continuously.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, and a kind of method of preventing and kill off transplanting rice field Herbicide-resistant weeds of the usage amount that can effectively prevent and kill off Herbicide-resistant weeds, slow down or avoid herbicide resistance to produce, reduce weed killer herbicide, minimizing weed killer herbicide use cost is provided.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is a kind of method of preventing and kill off transplanting rice field Herbicide-resistant weeds, comprises at least one the weeding measure in following operation (1)～(3):
(1) in same time, same rice field, comprehensively use weed killer herbicides dissimilar, the different mechanisms of action;
(2) in same time, same rice field, comprehensively use the weed killer herbicide of different action sites;
(3) weed killer herbicide of rotation dissimilar, the different mechanisms of action of use and different action sites in different year, same rice field.
In the above-mentioned method of preventing and kill off transplanting rice field Herbicide-resistant weeds, preferably, described weed killer herbicide dissimilar, the different mechanisms of action comprises two or more in organic heterocycle herbicide, triazolopyrimidine class weed killer herbicide, sulfonylurea herbicide, acetamide-group herbicides, oxazole ketone weed killer herbicide, dinitroaniline herbicide.
In the above-mentioned method of preventing and kill off transplanting rice field Herbicide-resistant weeds, preferably, the weed killer herbicide of described different action sites comprises two or more in organic heterocycle herbicide, triazolopyrimidine class weed killer herbicide, sulfonylurea herbicide, acetamide-group herbicides, oxazole ketone weed killer herbicide, dinitroaniline herbicide.Described organic heterocyclic class weed killer herbicide (example is as Evil humulone) can suppress the growth of plant, plays a role, but do not affect photosynthetic Hill reaction under illumination condition.Described organic heterocyclic class weed killer herbicide (for example bentazone) can also suppress the photosynthesis of plant.Described triazolopyrimidine class weed killer herbicide (for example penoxsuam) can suppress acetolactate synthestase, causes the biosynthesis of branched-chain amino acid in plant corpus to be obstructed.Described sulfonylurea herbicide (for example phonetic aniline sulphur is grand, bensulfuron-methyl) can suppress the acetolactate synthestase of weeds, makes branched-chain amino acid valine, isoleucine, leucic biosynthesis suppressed, causes the synthetic and plant growth of protein to stop.Described acetamide-group herbicides (such as mefenacet, Acetochlor and the third careless amine etc.) can suppress and destroy a-amylase and protease in weeds body, affect the formation of protein, suppress growing of weeds young shoot and root, until weeds are dead.Described oxazole ketone weed killer herbicide (for example clomazone), by inhibition of isoprenyl compou nd synthesis, hinders carotin and chlcrophyll biosynthesis and causes weeds to be destroyed.Described dinitroaniline herbicide (for example pendimethalin) can enter rear in plant corpus and tubulin binding, suppresses the mitosis of plant cell, thereby facilitates the death of weeds.
In the above-mentioned method of preventing and kill off transplanting rice field Herbicide-resistant weeds, preferred, described in different year, same rice field rotation use the weed killer herbicide of dissimilar, the different mechanisms of action and different action sites specifically to refer to:
First Year: use organic heterocyclic class weed killer herbicide in 3～5 days before rice transplanting and process for the first time; Within 15～20 days after transplanting, using triazolopyrimidine class weed killer herbicide processes for the second time;
Second Year: 5～7 days or 1.5 leaf phases of barnyard grass use sulfonylurea herbicide and process with addition of acetamide-group herbicides after rice transplanting.
As to above-mentioned further improvements in methods of preventing and kill off transplanting rice field Herbicide-resistant weeds, described in different year, same rice field rotation use the weed killer herbicide of dissimilar, the different mechanisms of action and different action sites specifically also to comprise: on the basis of above-mentioned First Year, Second Year treatment measures
The 3rd year: within 5～10 days after rice transplanting, use oxazole ketone weed killer herbicide and process with addition of dinitroaniline herbicide;
The 4th year: within 3～7 days after rice transplanting, use acetamide-group herbicides and process for the first time; Within 15～25 days after rice transplanting, use organic heterocyclic class weed killer herbicide to process for the second time.
As to above-mentioned further improvements in methods of preventing and kill off transplanting rice field Herbicide-resistant weeds, described in different year, same rice field rotation use the weed killer herbicide of dissimilar, the different mechanisms of action and different action sites specifically also to comprise: on the basis of above-mentioned First Year, Second Year, the 3rd year, the 4th year treatment measures
The 5th year: within 5～10 days after rice transplanting, use acetamide-group herbicides and prevent and kill off with addition of sulfonylurea herbicide.
In the above-mentioned method of preventing and kill off transplanting rice field Herbicide-resistant weeds, preferred, at least one in described organic heterocyclic class weed killer herbicide Bao Kuo Evil humulone, bentazone; Described triazolopyrimidine class weed killer herbicide comprises penoxsuam; Described sulfonylurea herbicide comprises that phonetic aniline sulphur is grand, bensulfuron-methyl; Described acetamide-group herbicides comprise at least one in Acetochlor, the third careless amine, mefenacet; Described oxazole ketone weed killer herbicide comprises clomazone, and described dinitroaniline herbicide comprises pendimethalin.
In the above-mentioned method of preventing and kill off transplanting rice field Herbicide-resistant weeds, preferred, the formulation of Suo Shu Evil humulone is 35% missible oil, 25% missible oil, 12% missible oil or 30% aqueous emulsion; The formulation of described bentazone is 480g/L aqua; The formulation of described penoxsuam is 2.5% oil-suspending agent or 22% suspending agent; The grand formulation of described phonetic aniline sulphur is 50% water dispersible granules; The formulation of described bensulfuron-methyl and Acetochlor is the compound wetting powder of 20% bensulfuron-methyl Acetochlor; The formulation of described the third careless amine is 30% missible oil or 50% missible oil; The formulation of described mefenacet is 50% wetting powder; The formulation of described clomazone pendimethalin is the compound wetting powder of 18% clomazone pendimethalin.
In the above-mentioned method of preventing and kill off transplanting rice field Herbicide-resistant weeds, preferred,
In described First Year, the organic heterocyclic class weed killer herbicide Wei Evil humulone of using; The triazolopyrimidine class weed killer herbicide of using is penoxsuam;
In described Second Year, the sulfonylurea herbicide of using is that phonetic aniline sulphur is grand; The acetamide-group herbicides of using are the third careless amine;
In described the 3rd year, the oxazole ketone weed killer herbicide of using is clomazone; The dinitroaniline herbicide of using is pendimethalin;
In described the 4th year, the acetamide-group herbicides of using are mefenacet; The organic heterocyclic class weed killer herbicide of using is bentazone;
In described the 5th year, the acetamide-group herbicides of using are Acetochlor, and described sulfonylurea herbicide is bensulfuron-methyl.
In the above-mentioned method of preventing and kill off transplanting rice field Herbicide-resistant weeds, preferred,
In described First Year, the dosage of Shi Yong Evil humulone is 225～270 g a.i./hm
2; The dosage of the penoxsuam of using is 22.5～30 g a.i./hm
2;
In described Second Year, the grand dosage of phonetic aniline sulphur of using is 60～75 g a.i./hm
2; The dosage of the third careless amine of using is 450～525 g a.i./hm
2;
In described the 3rd year, the dosage of the 18% clomazone pendimethalin wetting powder of using is 175.5～216 g a.i./hm
2;
In described the 4th year, the dosage of the mefenacet of using is 375～450 g a.i./hm
2; The dosage of the bentazone of using is 1000～2000 g a.i./hm
2;
In described the 5th year, the dosage of the 20% bensulfuron-methyl Acetochlor wetting powder of using is 60～120 g a.i./hm
2.
In the above-mentioned method of preventing and kill off transplanting rice field Herbicide-resistant weeds, preferred, the application process of described weed killer herbicide adopts spray-on process, and described weed killer herbicide is added to clear water 450～600 L/hm
2, stir evenly rear even spraying.
On the various weed killer herbicide Jun Kecong manufacturers that select in technique scheme or market, directly buy and obtain.
The technical scheme of the invention described above can be used in particular for preventing and kill off the barnyard grass in transplanting rice field, dichloro quinolinic acid, butachlor, penoxsuam and benthiocarb having been developed immunity to drugs, simultaneously for preventing and kill off Monochoria vaginalis and the nutgrass flatsedge that bensulfuron-methyl, pyrazosulfuron and penoxsuam are developed immunity to drugs.
Compared with prior art, the invention has the advantages that:
Adopt method of the present invention can effectively prevent and kill off the barnyard grass that transplanting rice Tanaka has developed immunity to drugs to dichloro quinolinic acid, butachlor, penoxsuam and benthiocarb, the Monochoria vaginalis that bensulfuron-methyl, pyrazosulfuron and penoxsuam are developed immunity to drugs and nutgrass flatsedge are also very effective, the control efficiency of the main Herbicide-resistant weeds in rice field is reached more than 95%, be suitable for the resistant weed control of China's transplanting rice field.In addition, method of the present invention can also slow down or avoid the generation of herbicide resistance, reduces the usage amount of weed killer herbicide, reduces the cost that peasant uses weed killer herbicide, for the protection of soil environment and ecotope, also has positive effect.
Embodiment
For the ease of understanding the present invention, below in connection with specification preferred embodiment, the present invention is done more comprehensively, described meticulously, but protection scope of the present invention is not limited to following specific embodiment.
Unless otherwise defined, all technical terms of hereinafter using are identical with the implication that those skilled in the art understand conventionally.Technical term used herein, just in order to describe the object of specific embodiment, is not to be intended to limit the scope of the invention.
Apart from special instruction, various weed killer herbicides, reagent and the raw material of using in the present invention is the commodity that can buy from the market or the product that can make by known method.
A method of preventing and kill off transplanting rice field Herbicide-resistant weeds of the present invention, comprises the weeding measure in following operation (1)～(3):
(1) in same time, same rice field, comprehensively use weed killer herbicides dissimilar, the different mechanisms of action;
(2) in same time, same rice field, comprehensively use the weed killer herbicide of different action sites;
(3) weed killer herbicide of rotation dissimilar, the different mechanisms of action of use and different action sites in different year, same rice field.
Concrete weeding embodiment comprises:
First Year: using organic heterocyclic class Chu Cao Ji Evil humulone for 3～5 days before rice transplanting, to process for the first time the formulation of ， Evil humulone be 35% missible oil, 25% missible oil, 12% missible oil or 30% aqueous emulsion, and dosage is 225～270 g a.i./hm
2; Within 15～20 days after transplanting, use triazolopyrimidine class weed killer herbicide penoxsuam and process for the second time, the formulation of penoxsuam is 2.5% oil-suspending agent or 22% suspending agent, and dosage is 22.5～30 g a.i./hm
2;
Second Year: 5～7 days or 1.5 leaf phases of barnyard grass use the grand and careless amine of acetamide-group herbicides third of the phonetic aniline sulphur of sulfonylurea herbicide and process after rice transplanting; The grand formulation of phonetic aniline sulphur is 50% water dispersible granules, and dosage is 60～75 g a.i./hm
2; The formulation of the third careless amine is 30% missible oil or 50% missible oil, and dosage is 450～525 g a.i./hm
2;
The 3rd year: within 5～10 days after rice transplanting, use oxazole ketone weed killer herbicide clomazone and process with addition of dinitroaniline herbicide pendimethalin; The formulation of clomazone and pendimethalin is the compound wetting powder of 18% clomazone pendimethalin; The dosage of 18% clomazone pendimethalin wetting powder is 175.5～216 g a.i./hm
2;
The 4th year: within 3～7 days after rice transplanting, use acetamide-group herbicides mefenacet and process for the first time, the formulation of mefenacet is 50% wetting powder, the dosage of mefenacet was 375～450 g a.i./hm
2; Within 15～25 days after rice transplanting, use organic heterocyclic class weed killer herbicide bentazone to process for the second time, the formulation of bentazone is 480g/L aqua, and the dosage of bentazone is 1000～2000 g a.i./hm
2;
The 5th year: within 5～10 days after rice transplanting, use acetamide-group herbicides Acetochlor and prevent and kill off with addition of sulfonylurea herbicide bensulfuron-methyl; The formulation of bensulfuron-methyl and Acetochlor is the compound wetting powder of 20% bensulfuron-methyl Acetochlor, and the dosage of the 20% bensulfuron-methyl Acetochlor wetting powder of using is 60～120 g a.i./hm
2.
The application process that weed killer herbicide is concrete: adopt spray-on process, quantitatively weighing weed killer herbicide, adds clear water 450～600 L/hm
2, stir evenly rear even spraying.Spraying apparatus generally adopts knapsack hand sprayer, knapsack electric sprayer or stretcher type power driven sprayer etc., is all commercially available.
embodiment 1:
Certain demonstration area, rice field, belongs to double rice cropping system, soil organic matter content 2.2%, and pH7.2, soil fertility is medium.No. 45, rice varieties Hunan Xian morning, April 28 transplanted.Weeds in paddy field generating capacity is larger, within 20 days and 40 days after rice growing, investigates respectively not weeding check plot, finds that main weeds has barnyard grass 110～132 strains/m
2, Monochoria vaginalis 86～103 strains/m
2, mexicana 67～85 strains/m
2, special-shaped (cracking rice) nutgrass flatsedge 24～36 strains/m
2.During results, the paddy rice underproduction of dispenser check plot does not reach 45.3%～52.1%.
In the demonstration area, rice field of the present embodiment, adopt method of preventing and kill off transplanting rice field Herbicide-resistant weeds of the present invention, comprise the weeding measure in following operation (1)～(3):
(1) in same time, same rice field, comprehensively use weed killer herbicides dissimilar, the different mechanisms of action;
(2) in same time, same rice field, comprehensively use the weed killer herbicide of different action sites;
(3) weed killer herbicide of rotation dissimilar, the different mechanisms of action of use and different action sites in different year, same rice field.
Concrete weeding embodiment is:
First Year: using organic heterocyclic class Chu Cao Ji Evil humulone for first 4 days at rice transplanting, to process for the first time the formulation of ， Evil humulone be 12% missible oil, and dosage is 225 g a.i./hm
2; In transplanting, within latter 20 days, use triazolopyrimidine class weed killer herbicide penoxsuam and process for the second time, the formulation of penoxsuam is 2.5% oil-suspending agent, and dosage is 22.5 g a.i./hm
2; Process the strain preventive effect of latter 20 days investigation weeds: barnyard grass 96.7%, Monochoria vaginalis 98.2%, special-shaped (cracking rice) nutgrass flatsedge 100.0%, mexicana 97.2%.Processing investigation in latter 40 days is respectively the strain of weeds and fresh weight preventive effect (%): barnyard grass strain preventive effect 98.3%, fresh weight preventive effect 99.1%.Monochoria vaginalis strain preventive effect 100.0%, fresh weight preventive effect 100.0%.Special-shaped (cracking rice) nutgrass flatsedge strain preventive effect 100.0%, fresh weight preventive effect 100.0%.Mexicana strain preventive effect 98.1%, fresh weight preventive effect 99.0%.
Second Year: use the grand and careless amine of acetamide-group herbicides third of the phonetic aniline sulphur of sulfonylurea herbicide for 6 days after rice transplanting and process; The grand formulation of phonetic aniline sulphur is 50% water dispersible granules, and dosage is 60 g a.i./hm
2; The formulation of the third careless amine is 30% missible oil, and dosage is 450 g a.i./hm
2missible oil, processes the strain preventive effect of latter 15 days investigation weeds: barnyard grass 97.3%, Monochoria vaginalis 98.1%, special-shaped (cracking rice) nutgrass flatsedge 97.6%, mexicana 95.4%.Processing investigation in latter 30 days is respectively the strain of weeds and fresh weight preventive effect (%): barnyard grass strain preventive effect 100.0%, fresh weight preventive effect 100.0%; Monochoria vaginalis strain preventive effect 97.1%, fresh weight preventive effect 98.4%.Special-shaped (cracking rice) nutgrass flatsedge strain preventive effect 98.6%, fresh weight preventive effect 99.2%.Mexicana strain preventive effect 97.5%, fresh weight preventive effect 98.3%.
The 3rd year: within 7 days after rice transplanting, use oxazole ketone weed killer herbicide clomazone and process with addition of dinitroaniline herbicide pendimethalin; The formulation of clomazone and pendimethalin is the compound wetting powder of 18% clomazone pendimethalin; The dosage of 18% clomazone pendimethalin wetting powder is 216 g a.i./hm
2; Process the strain preventive effect of latter 20 days investigation weeds: barnyard grass 95.2%, Monochoria vaginalis 95.1%, special-shaped (cracking rice) nutgrass flatsedge 96.2%, mexicana 96.9%.Processing investigation in latter 40 days is respectively the strain of weeds and fresh weight preventive effect (%): barnyard grass strain preventive effect 96.1%, fresh weight preventive effect 97.9%; Monochoria vaginalis strain preventive effect 95.8%, fresh weight preventive effect 96.7; Special-shaped (cracking rice) nutgrass flatsedge strain preventive effect 98.7%, fresh weight preventive effect 99.3%; Mexicana strain preventive effect 97.1%, fresh weight preventive effect 96.9%.
The 4th year: within 4 days after rice transplanting, use acetamide-group herbicides mefenacet and process for the first time, the formulation of mefenacet is 50% wetting powder, the dosage of mefenacet was 400 g a.i./hm
2; Within 20 days after rice transplanting, use organic heterocyclic class weed killer herbicide bentazone to process for the second time, the formulation of bentazone is 480g/L aqua, and the dosage of bentazone is 1000 g a.i./hm
2.Process the strain preventive effect of latter 20 days investigation weeds: barnyard grass 97.2%, Monochoria vaginalis 95.5%, special-shaped (cracking rice) nutgrass flatsedge 97.3%, mexicana 97.1%.Processing investigation in latter 40 days is respectively the strain of weeds and fresh weight preventive effect (%): barnyard grass strain preventive effect 98.4%, fresh weight preventive effect 99.1%; Monochoria vaginalis strain preventive effect 97.1%, fresh weight preventive effect 98.6%; Special-shaped (cracking rice) nutgrass flatsedge strain preventive effect 98.3%, fresh weight preventive effect 99.7%; Mexicana strain preventive effect 95.7%, fresh weight preventive effect 96.3%.
The 5th year: within 6 days after rice transplanting, use acetamide-group herbicides Acetochlor and prevent and kill off with addition of sulfonylurea herbicide bensulfuron-methyl; The formulation of bensulfuron-methyl and Acetochlor is the compound wetting powder of 20% bensulfuron-methyl Acetochlor, and the dosage of the 20% bensulfuron-methyl Acetochlor wetting powder of using is 100 g a.i./hm
2.Process the strain preventive effect of latter 20 days investigation weeds: barnyard grass 95.7%, Monochoria vaginalis 96.3%, special-shaped (cracking rice) nutgrass flatsedge 97.5%, mexicana 97.1%.Processing investigation in latter 40 days is respectively the strain of weeds and fresh weight preventive effect (%): barnyard grass strain preventive effect 98.1%, fresh weight preventive effect 99.3%; Monochoria vaginalis strain preventive effect 97.4%, fresh weight preventive effect 98.1%; Special-shaped (cracking rice) nutgrass flatsedge strain preventive effect 100.0%, fresh weight preventive effect 100.0%; Mexicana strain preventive effect 95.4%, fresh weight preventive effect 96.3%.
The application process that weed killer herbicide is concrete: adopt spray-on process, quantitatively weighing weed killer herbicide, adds clear water 450～600 L/hm
2, stir evenly rear even spraying.Spraying apparatus generally adopts knapsack hand sprayer, knapsack electric sprayer or stretcher type power driven sprayer etc., is all commercially available.
embodiment 2:
Certain demonstration area, rice field, belongs to double rice cropping system, hills, and soil is pale red yellow mud, the content of organic matter 2.0%, and pH6.5, soil fertility is medium.Rice varieties long-grained nonglutinous rice 87-158, April 25 transplanted.Weeds in paddy field generating capacity is larger, within 20 days and 40 days after rice growing, investigates respectively not weeding check plot, finds that main weeds has barnyard grass 112～141 strains/m
2, Monochoria vaginalis 76～83 strains/m
2, mexicana 39～47 strains/m
2, special-shaped (cracking rice) nutgrass flatsedge 55～67 strains/m
2.During results, the paddy rice underproduction of dispenser check plot does not reach 41.7%～50.9%.
In the demonstration area, rice field of the present embodiment, adopt method of preventing and kill off transplanting rice field Herbicide-resistant weeds of the present invention, comprise the weeding measure in following operation (1)～(3):
(1) in same time, same rice field, comprehensively use weed killer herbicides dissimilar, the different mechanisms of action;
(2) in same time, same rice field, comprehensively use the weed killer herbicide of different action sites;
(3) weed killer herbicide of rotation dissimilar, the different mechanisms of action of use and different action sites in different year, same rice field.
Concrete weeding embodiment is:
First Year: using organic heterocyclic class Chu Cao Ji Evil humulone for first 4 days at rice transplanting, to process for the first time the formulation of ， Evil humulone be 12% missible oil, and dosage is 225 g a.i./hm
2; In transplanting, within latter 20 days, use triazolopyrimidine class weed killer herbicide penoxsuam and process for the second time, the formulation of penoxsuam is 2.5% oil-suspending agent, and dosage is 22.5 g a.i./hm
2; Process the strain preventive effect of latter 20 days investigation weeds: barnyard grass 100.0%, Monochoria vaginalis 100.0%, special-shaped (cracking rice) nutgrass flatsedge 97.8%, mexicana 98.5%.Processing investigation in latter 40 days is respectively the strain of weeds and fresh weight preventive effect (%): barnyard grass strain preventive effect 100.0%, fresh weight preventive effect 100.0%; Monochoria vaginalis strain preventive effect 98.2%, fresh weight preventive effect 99.4%; Special-shaped (cracking rice) nutgrass flatsedge strain preventive effect 96.1%, fresh weight preventive effect 97.3%; Mexicana strain preventive effect 97.2%, fresh weight preventive effect 98.3%.
Second Year: use the grand and careless amine of acetamide-group herbicides third of the phonetic aniline sulphur of sulfonylurea herbicide for 6 days after rice transplanting and process; The grand formulation of phonetic aniline sulphur is 50% water dispersible granules, and dosage is 60 g a.i./hm
2; The formulation of the third careless amine is 30% missible oil, and dosage is 450 g a.i./hm
2missible oil, processes the strain preventive effect of latter 15 days investigation weeds: barnyard grass 99.1%, Monochoria vaginalis 95.7%, special-shaped (cracking rice) nutgrass flatsedge 96.9%, mexicana 97.1%.Processing investigation in latter 30 days is respectively the strain of weeds and fresh weight preventive effect (%): barnyard grass strain preventive effect 97.6%, fresh weight preventive effect 98.3%; Monochoria vaginalis strain preventive effect 95.1%, fresh weight preventive effect 96.2%; Special-shaped (cracking rice) nutgrass flatsedge strain preventive effect 96.4%, fresh weight preventive effect 97.3%; Mexicana strain preventive effect 96.5%, fresh weight preventive effect 97.2%.
The 3rd year: within 7 days after rice transplanting, use oxazole ketone weed killer herbicide clomazone and process with addition of dinitroaniline herbicide pendimethalin; The formulation of clomazone and pendimethalin is the compound wetting powder of 18% clomazone pendimethalin; The dosage of 18% clomazone pendimethalin wetting powder is 216 g a.i./hm
2; Process the strain preventive effect of latter 20 days investigation weeds: barnyard grass 95.1%, Monochoria vaginalis 98.6%, special-shaped (cracking rice) nutgrass flatsedge 96.2%, mexicana 97.3%.Processing investigation in latter 40 days is respectively the strain of weeds and fresh weight preventive effect (%): barnyard grass strain preventive effect 95.7%, fresh weight preventive effect 96.3%; Monochoria vaginalis strain preventive effect 97.1%, fresh weight preventive effect 98.3%; Special-shaped (cracking rice) nutgrass flatsedge strain preventive effect 96.7%, fresh weight preventive effect 98.2%; Mexicana strain preventive effect 96.1%, fresh weight preventive effect 97.2%.
The 4th year: within 4 days after rice transplanting, use acetamide-group herbicides mefenacet and process for the first time, the formulation of mefenacet is 50% wetting powder, the dosage of mefenacet was 400 g a.i./hm
2; Within 20 days after rice transplanting, use organic heterocyclic class weed killer herbicide bentazone to process for the second time, the formulation of bentazone is 480g/L aqua, and the dosage of bentazone is 1000 g a.i./hm
2.Process the strain preventive effect of latter 20 days investigation weeds: barnyard grass 95.0%, Monochoria vaginalis 96.1%, special-shaped (cracking rice) nutgrass flatsedge 96.5%, mexicana 97.3%.Processing investigation in latter 40 days is respectively the strain of weeds and fresh weight preventive effect (%): barnyard grass strain preventive effect 95.7%, fresh weight preventive effect 97.1%; Monochoria vaginalis strain preventive effect 96.8%, fresh weight preventive effect 98.3%; Special-shaped (cracking rice) nutgrass flatsedge strain preventive effect 98.3%, fresh weight preventive effect 99.1%; Mexicana strain preventive effect 99.1%, fresh weight preventive effect 100.0%.
The 5th year: within 6 days after rice transplanting, use acetamide-group herbicides Acetochlor and prevent and kill off with addition of sulfonylurea herbicide bensulfuron-methyl; The formulation of bensulfuron-methyl and Acetochlor is the compound wetting powder of 20% bensulfuron-methyl Acetochlor, and the dosage of the 20% bensulfuron-methyl Acetochlor wetting powder of using is 100 g a.i./hm
2.Process the strain preventive effect of latter 20 days investigation weeds: barnyard grass 97.2%, Monochoria vaginalis 98.1%, special-shaped (cracking rice) nutgrass flatsedge 97.9%, mexicana 98.7%.Processing investigation in latter 40 days is respectively the strain of weeds and fresh weight preventive effect (%): barnyard grass strain preventive effect 95.7%, fresh weight preventive effect 96.3%; Monochoria vaginalis strain preventive effect 95.6%, fresh weight preventive effect 97.1%; Special-shaped (cracking rice) nutgrass flatsedge strain preventive effect 97.1%, fresh weight preventive effect 98.3%; Mexicana strain preventive effect 96.7%, fresh weight preventive effect 97.8%.
The application process that weed killer herbicide is concrete: adopt spray-on process, quantitatively weighing weed killer herbicide, adds clear water 450～600 L/hm
2, stir evenly rear even spraying.Spraying apparatus generally adopts knapsack hand sprayer, knapsack electric sprayer or stretcher type power driven sprayer etc., all can buy from the market.
Claims (10)
1. prevent and kill off a method for transplanting rice field Herbicide-resistant weeds, comprise at least one the weeding measure in following operation (1)～(3):
(1) in same time, same rice field, comprehensively use weed killer herbicides dissimilar, the different mechanisms of action;
(2) in same time, same rice field, comprehensively use the weed killer herbicide of different action sites;
(3) weed killer herbicide of rotation dissimilar, the different mechanisms of action of use and different action sites in different year, same rice field.
2. method of preventing and kill off transplanting rice field Herbicide-resistant weeds according to claim 1, it is characterized in that, described weed killer herbicide dissimilar, the different mechanisms of action comprises two or more in organic heterocycle herbicide, triazolopyrimidine class weed killer herbicide, sulfonylurea herbicide, acetamide-group herbicides, oxazole ketone weed killer herbicide, dinitroaniline herbicide; The weed killer herbicide of described different action sites comprises two or more in organic heterocycle herbicide, triazolopyrimidine class weed killer herbicide, sulfonylurea herbicide, acetamide-group herbicides, oxazole ketone weed killer herbicide, dinitroaniline herbicide.
3. method of preventing and kill off transplanting rice field Herbicide-resistant weeds according to claim 2, is characterized in that, described in different year, same rice field rotation use the weed killer herbicide of dissimilar, the different mechanisms of action and different action sites specifically to refer to:
First Year: use organic heterocyclic class weed killer herbicide in 3～5 days before rice transplanting and process for the first time; Within 15～20 days after transplanting, using triazolopyrimidine class weed killer herbicide processes for the second time;
Second Year: after rice transplanting 5～7 days or the 1.5 leaf phases of barnyard grass use sulfonylurea herbicide and acetamide-group herbicides are processed.
4. method of preventing and kill off transplanting rice field Herbicide-resistant weeds according to claim 3, is characterized in that, described in different year, same rice field rotation use the weed killer herbicide of dissimilar, the different mechanisms of action and different action sites specifically also to comprise:
The 3rd year: within 5～10 days after rice transplanting, use oxazole ketone weed killer herbicide and process with addition of dinitroaniline herbicide;
The 4th year: within 3～7 days after rice transplanting, use acetamide-group herbicides and process for the first time; Within 15～25 days after rice transplanting, use organic heterocyclic class weed killer herbicide to process for the second time.
5. method of preventing and kill off transplanting rice field Herbicide-resistant weeds according to claim 4, is characterized in that, described in different year, same rice field rotation use the weed killer herbicide of dissimilar, the different mechanisms of action and different action sites specifically also to comprise:
The 5th year: within 5～10 days after rice transplanting, use acetamide-group herbicides and prevent and kill off with addition of sulfonylurea herbicide.
6. according to the method for preventing and kill off transplanting rice field Herbicide-resistant weeds described in any one in claim 2～5, it is characterized in that: at least one in described organic heterocyclic class weed killer herbicide Bao Kuo Evil humulone, bentazone; Described triazolopyrimidine class weed killer herbicide comprises penoxsuam; Described sulfonylurea herbicide comprises that phonetic aniline sulphur is grand, bensulfuron-methyl; Described acetamide-group herbicides comprise at least one in Acetochlor, the third careless amine, mefenacet; Described oxazole ketone weed killer herbicide comprises clomazone, and described dinitroaniline herbicide comprises pendimethalin.
7. method of preventing and kill off transplanting rice field Herbicide-resistant weeds according to claim 6, is characterized in that the formulation of: Suo Shu Evil humulone is 35% missible oil, 25% missible oil, 12% missible oil or 30% aqueous emulsion; The formulation of described bentazone is 480g/L aqua; The formulation of described penoxsuam is 2.5% oil-suspending agent or 22% suspending agent; The grand formulation of described phonetic aniline sulphur is 50% water dispersible granules; The formulation of described bensulfuron-methyl and Acetochlor is the compound wetting powder of 20% bensulfuron-methyl Acetochlor; The formulation of described the third careless amine is 30% missible oil or 50% missible oil; The formulation of described mefenacet is 50% wetting powder; The formulation of described clomazone and pendimethalin is the compound wetting powder of 18% clomazone pendimethalin.
8. method of preventing and kill off transplanting rice field Herbicide-resistant weeds according to claim 7, is characterized in that:
In described First Year, the organic heterocyclic class weed killer herbicide Wei Evil humulone of using; The triazolopyrimidine class weed killer herbicide of using is penoxsuam;
In described Second Year, the sulfonylurea herbicide of using is that phonetic aniline sulphur is grand; The acetamide-group herbicides of using are the third careless amine;
In described the 3rd year, the oxazole ketone weed killer herbicide of using is clomazone; The dinitroaniline herbicide of using is pendimethalin;
In described the 4th year, the acetamide-group herbicides of using are mefenacet; The organic heterocyclic class weed killer herbicide of using is bentazone;
In described the 5th year, the acetamide-group herbicides of using are Acetochlor, and described sulfonylurea herbicide is bensulfuron-methyl.
9. method of preventing and kill off transplanting rice field Herbicide-resistant weeds according to claim 8, is characterized in that:
In described First Year, the dosage of Shi Yong Evil humulone is 225～270 g a.i./hm
2; The dosage of the penoxsuam of using is 22.5～30 g a.i./hm
2;
In described Second Year, the grand dosage of phonetic aniline sulphur of using is 60～75 g a.i./hm
2; The dosage of the third careless amine of using is 450～525 g a.i./hm
2;
In described the 3rd year, the dosage of the 18% clomazone pendimethalin wetting powder of using is 175.5～216 g a.i./hm
2;
In described the 4th year, the dosage of the mefenacet of using is 375～450 g a.i./hm
2; The dosage of the bentazone of using is 1000～2000 g a.i./hm
2;
In described the 5th year, the dosage of the 20% bensulfuron-methyl Acetochlor wetting powder of using is 60～120 g a.i./hm
2.
10. method of preventing and kill off transplanting rice field Herbicide-resistant weeds according to claim 9, is characterized in that: the application process of described weed killer herbicide adopts spray-on process, and described weed killer herbicide is added to clear water 450～600 L/hm
2, stir evenly rear even spraying; Described method is for preventing and kill off the barnyard grass that transplanting rice field has developed immunity to drugs to dichloro quinolinic acid, butachlor and benthiocarb, simultaneously for preventing and kill off Monochoria vaginalis and the nutgrass flatsedge that bensulfuron-methyl and pyrazosulfuron are developed immunity to drugs.
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| CN106234368A (en) * | 2015-06-05 | 2016-12-21 | 四川利尔作物科学有限公司 | Herbicidal combinations and application thereof |
| CN111357542A (en) * | 2020-04-23 | 2020-07-03 | 内蒙古天创药业科技股份有限公司 | Weeding and weed control method in planting production process of traditional Chinese medicine radix astragali |
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