CN101164414A - Weedicide for preventing and controlling weeds in sugarcane field - Google Patents
Weedicide for preventing and controlling weeds in sugarcane field Download PDFInfo
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- CN101164414A CN101164414A CNA200610053858XA CN200610053858A CN101164414A CN 101164414 A CN101164414 A CN 101164414A CN A200610053858X A CNA200610053858X A CN A200610053858XA CN 200610053858 A CN200610053858 A CN 200610053858A CN 101164414 A CN101164414 A CN 101164414A
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Abstract
The present invention relates to a cane-field weed-killing agent. Its effective component composition includes (by wt%) 5-25% of diuron, 5-20% of dimethyltetrachlorosodium and 10-50% of ametryn. Besides, said invention also provides its application method.
Description
Technical field
The invention belongs to the weed killer herbicide agricultural technology field that contains heterocyclic compound, relate in particular to a kind of mixture herbicide of preventing and treating weeds in sugarcane field.
Background technology
Weeds in sugarcane field is of a great variety, and density is big, and amount of growth is big, adopts alternative agricultural of weed killer herbicide or machinery to prevent and kill off in the old weeding of sugarcane, not only herbicidal effect is good, can prevent and kill off weeds in sugarcane field timely and effectively, and the control cost is low, can save man-hour, reduce labor intensity, reduce the rural labor cost.Simultaneously, also make insect and germ lose numerous vectors and wild host, alleviated disease, worm, the plague of rats to a certain extent; Conditions such as field moisture, nutrient, space can be made full use of by sugarcane, impel the sugarcane normal growth to grow and raising output.But the weeds kind is many in the sugarcane field, and each is variant for biological property, and the grass spectrum is little extremely for single processing soil treatment agent such as atrazine, Acetochlor and triazine herbicide etc., and crop smothering can not effectively be suppressed and reduce, and often is difficult to control their growth that spreads; And glyphosate, that gram does not have preventive effects such as track is good, but causes poisoning easily.
Chinese invention patent CN02154112.4 " a kind of complex weedicide of preventing and treating weeds in sugarcane field " (open day is on June 1st, 2003), provide a kind of sugarcane field special-purpose complex weedicide based on ametryn and 2 first, 4 chlorine sodium salts, each compositions in weight percentage is in the composition: ametryn 30%～45%, 2 first, 4 chlorine sodium salts 3%～13%, surfactant 3%～10%, inert filler 30%～39%.This invention complex weedicide to the average preventive effect of single, double cotyledon weeds in sugarcane field more than 92%, but still exist this mixed agent can not effectively prevent and kill off the miscellaneous unifacial leaf of sugarcane Tanaka, dicotyledonous, broad-leaved, narrow leaf and weeds such as annual, perennial, kill the grass spectrum and remain further to improve and improve.
Summary of the invention
In order to overcome existing deficiency of preventing and treating the weed killer herbicide of weeds in sugarcane field, the invention provides a kind of broad weed-killing spectrum, good drug efficacy, the good and eco-friendly complex weedicide of safety.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of weed killer herbicide of preventing and treating weeds in sugarcane field is characterized in that its active ingredient is diuron, 2 first, 4 chlorine sodium and ametryns, and the mass fraction scope is:
Diuron 5～25%
2 first, 4 chlorine sodium 5～20%
Ametryn 10～50%.
Diuron belongs to phenyl ureagroup herbicides, and ametryn belongs to triazine herbicide, and two kinds of reality all are photosynthesis electron transport chain inhibitor.Medicament mainly absorbs by the weeds root system, is used for the sealing of soil class and handles, and mainly prevents and treats annual broadleaf weed.2 first, 4 chlorine sodium belong to phenoxy carboxylic acid herbicides, are the hormone-type inhibitor, are generally used for cauline leaf and handle the annual and perennial broadleaf weed of control.The three is inequality to the absorption portion of weeds, and killing the grass spectrum has certain complementarity, and mechanism of action leaf is inequality.Kill the grass spectrum but can enlarge after above-mentioned three is mixed, improve control efficiency, use the back with because of having reduced dosage separately, and improved safety, alleviated poisoning, delay the generation of weeds resistance simultaneously succession crop to crop to some weeds.
Above-mentioned weed killer herbicide can also comprise that the mass fraction scope is that 3～10% surfactant and mass fraction scope are 5～77% inert filler.
Described surfactant is selected from methyl naphthalene sulfonate formaldehyde condensate (MF), lauryl sodium sulfate (K12), to a kind of in methoxyl group fatty acyl amido benzene sulfonic acid sodium salt (LS), the beta-naphthalenesulfonic-acid formaldehyde condensation compound (NNO) and more than one mixing.
Described inert filler is selected from a kind of in kaolin, white carbon black, the potter's clay and more than one mixing.
Further, the mass fraction scope of weed killer herbicide effective ingredient diuron of the present invention, 2 first, 4 chlorine sodium and ametryn is:
Diuron 17.5～13.8%
2 first, 4 chlorine sodium 12.5～8.8%
Ametryn 32.5～28.8%.
Described weed killer herbicide can comprise the Pesticide Science acceptable assistant, as emulsifier, wetting agent, dispersant, antifreezing agent, thickener, defoamer, surfactant, sticker, disintegrant, solvent or the like; Described weed killer herbicide is the Pesticide Science acceptable forms, as missible oil, wetting powder, aqueous emulsion, granule, suspending agent, microemulsion etc.
Described weed killer herbicide includes dispersant, wetting agent, bleeding agent and the spreader-sticker of convention amount during for wetting powder, and its mass fraction scope is: dispersant 5～9%, wetting agent are 1～2%, and bleeding agent is 0～2%, and spreader-sticker is 0～2%.
Further, weed killer herbicide be the grand 2 first green bristlegrass of 55% enemy go out wetting powder (total amount that is effective ingredient diuron, 2 first, 4 chlorine sodium and ametryn is 55% mixed agent, and it comprises the component of following mass fraction scope:
Diuron 15%
2 first, 4 chlorine sodium 10%
Ametryn 30%
Dispersant 7%
Wetting agent 1.5%
Inert filler to 100%.
Wetting powder of the present invention, be conventional preparation method: proportionally carry out coarse crushing after earlier diuron, 2 first, 4 chlorine and ametryn being sieved respectively, add surfactant and inert filler again and mix, through through airslide disintegrating mill or micronizer ultra-fine grinding, fully mix again.
The weed killer herbicide of control weeds in sugarcane field of the present invention compared to existing technology, its beneficial effect mainly shows:
1, enlarged and kill the grass spectrum, weed killer herbicide of the present invention is applicable to that sugarcane field prevents and kill off kind surplus annual gramineous weed and the broad leaved weed 50～60, broad weed-killing spectrum, and all can use in any period of sugarcane production.By clear and definite to the investigation of red-yellow soil district, the southeast, Guangxi 20 small towns weeds in sugarcane field, Guigang, Guangxi weeds in sugarcane field kind has 152 kinds, adhere to 32 sections separately, wherein composite family is 27 kinds, accounting for sum 17.76%, secondly is 22 kinds of grass family, accounts for sum 14.47%, other are followed successively by sedge family, Amaranthaceae, Euphorbiaceae, Malvaceae etc. and the weeds kind of Fujian Province's sugarcane ground generation has 48 kinds of 23 sections etc. in addition, and the present invention has enlarged grass spectrum extremely compared to existing technology.
2, after three's effective ingredient is used with, have complementary advantages, reduce each plant demand, delay the weeds pesticide resistance and produce.
Embodiment
By the following examples the present invention is further described.
Mixture herbicide of the present invention, in the effective ingredient:
Diuron, other English name of international title: diuron: Marmex, Lucenit
Chemical name: N-(3, the 4-dichlorophenyl)-N, N '. dimethyl urea
Molecular formula: C
9H
10N
2OC
12Relative molecular mass: 233.10; Fusing point: 158 ℃～159 ℃; Decomposition temperature: 180 ℃～190 ℃; Vapour pressure (25 ℃): 1.1 * 10
-6Pa
Solvability (g/L, 25 ℃): 0.042 (in the water)
Stability; Stable in the neutral solution under the normal temperature, temperature raises hydrolysis, hydrolysis in the acid-alkali medium takes place.
2 first, 4 chlorine sodium: international title: MCPA-sodiom
Chemical name: 2-methyl 4-chlorophenoxyacetic acid sodium
Molecular formula: C
9H
9O
3CL (Na); Relative molecular mass: 200.5 (acid); Fusing point: 119 ℃-120.5 ℃; Solvability (g/L, 25 ℃): 0.734 (in the water)
Stability: soluble in water, dry powder is moisture absorption caking very easily, but never degenerates.
Ametryn, international title: ametryn
Other title: Ah going out is clean; Chemical name: 2-ethylamino-4-isopropylamino-6-methyl mercapto-1,3,5-triazines
Molecular formula: C
9H
17N
5S relative molecular mass: 227.33; Fusing point: 84 ℃～85 ℃; Solvability (g/L, 20 ℃): 0.018 (in the water)
Stability: stable in neutrality, weak acid or weak alkaline medium, but especially at high temperature easily decompose at strong acid or highly basic, nonflammable, do not explode non-corrosiveness.
The grand 2 first green bristlegrass of the embodiment 1:55% enemy wetting powder that goes out
Component by following mass fraction is formed:
Diuron 15%
2 first, 4 chlorine sodium salts 10%
Ametryn 30%
Dispersant 7%
Wetting agent 1.5%
Inert filler to 100%.
Dispersant is (from a dispersing agent MF (MF), to methoxyl group fatty acyl amido benzene sulfonic acid sodium salt (LS), sodium metnylene bis-naphthalene sulfonate (NNO)), and wetting agent is (lauryl sodium sulfate (K12)), and inert filler is a kaolin.
Carry out coarse crushing according to aforementioned proportion after earlier diuron, 2 first, 4 chlorine and ametryn being sieved respectively, add above-mentioned auxiliary agent and inert filler again and mix,, fully mix again through comminution by gas stream.
Gained is a mixture herbicide of the present invention, the uniform loose powder of outward appearance, suspensibility: diuron 〉=60%, ametryn 〉=60%; Fineness (by the 44um standard screen), 〉=90%; Moisture≤3.0%; Wetting time 120s; The pH value is 6.0～9.0; Quicken storage test qualified (carrying out once at least in per 6 months).
The grand 2 first green bristlegrass of the embodiment 2:60% enemy suspension emulsion that goes out
Component by following mass fraction
Diuron 25%
2 first, 4 chlorine sodium salts 20%
Ametryn 15%
Emulsifier 5%
Antifreeze 5%
Thickener 1%
Defoamer 0.2%
Deionized water to 100%.
The grand 2 first green bristlegrass of the embodiment 3:70% enemy water-dispersible granules that goes out.
Component by following mass fraction
Diuron 15%
2 first, 4 chlorine sodium salts 5%
Ametryn 50%
Disintegrant 3%
Dispersant 2%
Wetting agent 1.5%
Filler to 100%.
The grand 2 first green bristlegrass of the embodiment 4:50% enemy wetting powder that goes out
Its effective ingredient is made up of the component of following mass fraction:
Diuron 25%
2 first, 4 chlorine sodium salts 10%
Ametryn 15%.
Embodiment 5: the effective ingredient of embodiment of the invention weed killer herbicide: the mass fraction of diuron, 2 first, 4 chlorine sodium salts and ametryn is:
Diuron 13.8%
2 first, 4 chlorine sodium salts 12.5%
Ametryn 32.5%.
Embodiment 6: the effective ingredient of embodiment of the invention weed killer herbicide: the mass fraction of diuron, 2 first, 4 chlorine sodium salts and ametryn is:
Diuron 17.5%
2 first, 4 chlorine sodium salts 12.5%
Ametryn 8.8%.
Embodiment 7: the effective ingredient of embodiment of the invention weed killer herbicide: the mass fraction of diuron, 2 first, 4 chlorine sodium salts and ametryn is:
Diuron 13.8%
2 first, 4 chlorine sodium salts 8.8%
Ametryn 28.8%.
One, acute oral toxicity test:
The grand 2 first green bristlegrass of test specimen: the embodiment 1 gained 55% enemy wetting powder that goes out
1, materials and methods
Preparation: take by weighing pale powder with electronic balance, be made into the soup of desired concn with edible oil for examination according to design dosage.
Experimental animal, test provides the (quality certification: No. 001, the accurate word of Zhejiang laboratory animal quality) with SD kind rat by Zhejiang Province's Experimental Animal Center
Test procedure: each 20 of male and female rats are divided into four groups respectively, 5 every group at random.After the animal fasting overnight, the male and female rat is all done a per os contamination with 5000mg/kg dosage.Observe also record poisoning symptom, death time after the contamination, and dead animal is done to dissect inspection, surviving animals continues to observe for 2 weeks.
2, result of the test and conclusion
30 minutes symptoms such as dull, slow in reacting, the movable minimizing of appearance are climbed volt, are flocked together behind the animal contaminated after 3 hours, and all animals all recovered normally in 24 hours, and animal dead does not appear in duration of test.Put to death surviving animals during off-test, do not see after the dissection that each internal organs has macroscopic material alterations.
According to the animal dead number, the grand 2 first green bristlegrass of the embodiment of the invention 1 gained, 55% enemy are gone out wetting powder to male and female rat acute per os toxicity (LD
50): female male being＞5000mg/kg.
Conclusion: according to China's current GB15760-1995 agricultural chemicals acute oral toxicity grade scale, mixed agent of the present invention all belongs to low toxicity to male and female rat acute per os toxicity.
Two, acute dermal toxicity test:
The grand 2 first green bristlegrass of test specimen: the embodiment 1 gained 55% enemy wetting powder that goes out
1, materials and methods
Preparation: take by weighing pale powder with electronic balance, be made into the suspension of desired concn with edible oil for examination according to design dosage.
Experimental animal, test provides the (quality certification: No. 001, the accurate word of Zhejiang laboratory animal quality) with SD kind rat by Zhejiang Province's Experimental Animal Center
Test procedure: each 5 of male and female rats, wiped out the back by hair in preceding 24 hours in test, confirm that the harmless back of skin is stand-by next day, the male and female rat is all with the suspension of 2000mg/kg dosage.Be applied to 4 * 5cm respectively equably
2On the skin of cropping position, cover gauze and add plastic film, use non-stimulated immobilization with adhesive tape.Contaminate after 4 hours, clean residual liquor with temperature laundering liquid cotton balls, observation and record local skin playback and whole body poisoning symptom, surviving animals are observed the back execution of two weeks and are dissected and check.
2, result of the test and conclusion
Do not see local skin and whole body poisoning symptom behind the animal contaminated, do not occur animal dead in the observation period.Observe two all backs weight increase, the surviving animals gross anatomy does not see that each internal organs has macroscopic material alterations.Need not to carry out again more high dose test by the GB15760-1995 regulation.
According to above-mentioned test structure, the grand 2 first green bristlegrass of embodiment 1 gained, 55% enemy are gone out wetting powder to male and female rat acute percutaneous toxicity (LD
50); Female male being＞2000mg/kg.
Conclusion: according to China's current GB15760-1995 agricultural chemicals acute dermal toxicity grade scale, mixed agent of the present invention all belongs to low toxicity to male and female rat acute per os toxicity.
Three, eye irritant test:
The grand 2 first green bristlegrass of test specimen: the embodiment 1 gained 55% enemy wetting powder that goes out
1, materials and methods
Preparation: it is stand-by to take by weighing 4 parts of pale powder 0.1 grams with electronic balance.
Experimental animal, new zealand rabbit is used in test, provides (the quality certification: No. 001, the accurate word of Zhejiang laboratory animal quality) by Zhejiang Province's Experimental Animal Center
Test procedure: adopt 4 of rabbit, test and drip fluorescein sodium in preceding 24 hours animal bilateral eye, inferior daily inspection eyes are determined to drop into test after the no corneal injury.Eyelid on the left of leaving behind is gently poured 0.1 gram sample in the conjunctival sac into, and is made closed about 1 minute, will not wash in 24 hours, and branch hole is contrast.The dispensing back was observed respectively and is tried thing to the irritant reaction of conjunctiva, cornea, iris and the 4th, 7 day recovery situation in 1,24,48,72 hour, continued then to observe for two weeks.According to the scoring of eye injury program, calculate eye irritation score index after the off-test, and carry out the stimulus intensity evaluation according to GB15760-1995
2, result of the test and conclusion
Offerd medicine visible animal experiment branch hole conjunctival congestion oedema and secretion, iris, cornea no abnormality seen back 1 hour.Contaminate and iris hyperemia occurs, corneal clouding after 24 hours.Symptom was the same in 48 hours.Observing above-mentioned symptom after 4 days alleviates.Recover normal after 7 days.(seeing Table 1)
Table 1:
Conclusion: according to China's current GB15760-1995 agricultural chemicals eye irritation grade scale, mixed agent of the present invention has the moderate excitant to the rabbit eyes.
Four, skin irritatin test:
The grand 2 first green bristlegrass of test specimen: the embodiment 1 gained 55% enemy wetting powder that goes out
1, materials and methods
Preparation: take by weighing 4 parts of pale powder 0.1 grams with electronic balance, use edible oil furnishing pasty state respectively.
Experimental animal, new zealand rabbit is used in test, provides (the quality certification: No. 001, the accurate word of Zhejiang laboratory animal quality) by Zhejiang Province's Experimental Animal Center
Test procedure: 4 of rabbit are adopted in test, test and wipe out back part of animal two sides in preceding 24 hours by hair, determine the input test of the harmless back of skin next day.The sample for preparing is coated on left side 2 * 3cm equably
2On the skin of no hair-fields, cover gauze, with non-stimulated immobilization with adhesive tape, self offside skin is contrast.Clean remaining medicine with temperature laundering liquid after 4 hours.Observing and write down local skin reaction (erythema and oedema form) continues to observe for two weeks then.Mark after the off-test, calculate stimulation index, and carry out the irritant reaction intensity evaluation according to GB15760-1995
2, result of the test and conclusion
Behind the coating 4,24,48 hours, animal experiment position and contrast position skin there is no erythema and oedema forms.Detailed results sees Table 2
Table 2:
Conclusion: according to China's current GB15760-1995 skin irritation grade scale, mixed agent of the present invention is to rabbit skin nonirritant.
Five, sensitization of skin is tested:
The grand 2 first green bristlegrass of test specimen: the embodiment 1 gained 55% enemy wetting powder that goes out
1, materials and methods
Preparation: with the edible oil preparation, sensitization concentration is 500mg/ml, and exciting concentration is 250mg/ml.
Experimental animal, the animal that is put to the test are that male guinea pig is planted by Britain, and body weight is 280～350g, provide (the moving 02-60 of doctor) by Shin Wong, Shanghai laboratory animal plant.
Test procedure: 13 every group of 3 treated animals (experimental group, negative control group, positive controls) are established in test, adopting the skin application method to carry out sensitization contacts with exciting, with 2-4-dinitrofluorobenzene (with DMSO preparation, sensitization concentration is 5mg/ml, and exciting concentration is 2.5mg/ml) as positive control.
Test divides two steps to carry out:
2, sensitization contact: test and wiped out the back part of animal left side in preceding 24 hours, 0.2ml is tried thing be applied to 2 * 2cm by hair
2On the filter paper, be applied to the unhairing district, with the covering of oilpaper and gauze, and with non-stimulated immobilization with adhesive tape 6 hours, during off-test, the flush away nubbin.And respectively repeated once in the 7th, 14 day.Negative control group is only given and is excited contact.
Excite contact: after the last sensitization contact 14 days and 28 days, 0.2ml is tried thing applied ointment or plaster at opposite side unhairing position (method is the same), continue after 6 hours the flush away residual drug.Observed 12 days continuously.Negative control group excites same experimental group time of contact.
The number of animals that erythema or oedema (no matter degree weight) will occur is obtained the sensitization rate divided by the animal sum, carries out sensitization rate strength assessment by GB15760-1995.
3, result of the test and conclusion
After three sensitization contact 6,24,48 hours, there is no coating position skin abnormality, the viewing duration animal activity is normal, weight increase.
Excite behind the coating in 12 day observation period, it is obviously unusual that experimental group and negative control treated animal do not see that the coating position has, and positive controls sees that all erythema and oedema appear in the coating position, sees the following form 3.
Table 3:
Conclusion: to sensitization rate strength grading, mixed agent of the present invention is to sensitizer a little less than belonging to 1 grade according to China's current GB15760-1995;
Six, the grand green bristlegrass of the 55%2 first enemies wetting powder that goes out is prevented and kill off the sugarcane field weeds registration test of pesticide effectiveness one
Test site: big kind of slope of Qinzhou City's Qinnan District town Green Dragon village unit of finishing: Guangxi Zhuang Autonomous Region agriculture chemical examination administrative institute
1. experimental condition
Crop: sugarcane, kind are osmanthus sugar 271, new plant cane.Subjects: weeds, lady's-grass Digitaria Sanguiralis (Lim) Scop is arranged, hispid hedyotis herb Hedyotis hispida Retz wins red moss Ageratum congziodes L.Gaertn, cyperus iria Cyperusiria L.Herba Hedyotidis Corymbosae Hedyotis corymbosa (L.) Lam, affine cudweed Gnaphalium affine D.Don, careless imperial JussiaeaLinifolia Vahl etc.
Environmental condition: test site is in Green Dragon village, town, big kind of slope of Qinnan District.The test soil property is that matrix is husky shale sandy loam, and the content of organic matter is 2.5%, PH5.8, middle fertility, rich water quality management unanimity.April 2 sugarcane of planting, day dispenser after 18 days, sugarcane does not emerge during dispenser.
2. medicament
Test medicine and handle dose: the grand green bristlegrass of the 55%2 first enemy WP that goes out, establish 1237.5,1485,1732.5, four processing of 2475gai/hm2 (with 150,180,210,300g/ mu);
Contrast medicament and treatment dosage:
80% ametryn WP (Changxing, Zhejiang Province first chemical plant product) establishes processing of 1800gai/hm2 (150g/ mu);
56%2 first, 4 chlorine sodium (Fushun, Liaoning Province insecticide factory product) are established processing of 840gai/hm2 (100g/ mu);
25% diuron WP (Suzhou, Jiangsu Province Hua Yuannongization company product) establishes processing of 1875gai/hm2 (500g/ mu).
Blank: not dispenser, spray clear water.
Arrange the sub-district: 4 repetitions are respectively established in above-mentioned 8 processing, totally 32 sub-districts, 30 square metres of sub-district areas.Guard row is arranged between the sub-district.Arrange all sub-districts district's group at random.
Insecticide-applying way: before sugarcane mu, weeds 2-3 leaf carries out spray pesticide to weeds, 60 kilograms of mu spraying volumes, and spraying equipment is the hand knapsack sprayer of sharp agricultural HD400 type, spraying time is April 20.
Meteorological data: dispenser fine day on the same day, 26.5 ℃ of mean temperature of air.Meteorological data behind the medicine in 10 days (21---30 day in April): 30.4 ℃ of mean temperature of air, 32 ℃ of high temperature (April 21), extremely low 21 ℃ of temperature (April 21), 3 days rain days (April 25,26,27 days), 9 millimeters of total rainfalls, sunshine duration 72 hours.
3 investigation
Carry out the efficacy survey first time in 20 days behind the medicine, investigate the residual weeds strain number alive in every sub-district; 45 days investigation strain number and fresh weights behind the medicine.Every sub-district is got 5 points at random, 0.25 square metre every.The statistical computation preventive effect, the preventive effect significance of difference between " DMRT " method mensuration of employing is handled.
Survey data and calculating: the investigation initial data is seen attached list, and gets the preventive effect of four repetitions and calculates average preventive effect.Formula is as follows:
Safety to sugarcane: observe after the dispenser, the poisoning phenomenon does not appear in the test sugarcane.
The result: the grand green bristlegrass of 55%2 first enemy is gone out WP to the sugarcane field lady's-grass, wins red moss, cyperus iria, and Herba Hedyotidis Corymbosae, affine cudweed, careless dragon has significant preventive effect, and is general to the preventive effect of hispid hedyotis herb.
To preventive effect and the integrated control effect result of various weeds, The results of analysis of variance sees following table 4 for details.
Table 4:
4 interpretations of result and discussion
The grand green bristlegrass of 55%2 first enemies is gone out in the WP test dose scope to sugarcane safety, and is remarkable to the preventive effect of annual weed, general to the preventive effect of hispid hedyotis herb, prevents and kill off sugarcane field weeds test of pesticide effectiveness table 5 as a result.
Carry out the earth spray pesticide at sugarcane field weeds 2-4 leaf, the medicament using dosage is 1237.5-1485gai/hm
2(150-210g/ mu) suitably improves dosage based on the sugarcane field of perennial weed.
Table 5
Mixed agent of the present invention is applicable to sugarcane field, is used to prevent and kill off annual gramineous weed and broad leaved weed, and perennial weed is also had certain inhibitory action.
In sugarcane seedling stage, weeds 2---4 leaf phase, mu field mixed agent 150---210 gram of the present invention is converted water 40-----50 kilogram, selects fine even spraying in the weeds cauline leaf, and the blade face is sprayed onto wetting not drip and is degree or spraying sealing surface soil.
Seven: 55% enemy Long.2Jia. the green bristlegrass WP that goes out prevents and kill off sugarcane field weeds test two
1. test objective
55% enemy Long.2Jia. green bristlegrass goes out that WP prevents and kill off the effect of sugarcane field weeds and to the safety of sugarcane.
2. test basic condition
Test site: experimental field be located at five groups in Meng Jiazhou village, An You township, Anxiang County, Hunan Province.Testing ground area 1200m
2For examination ground soil: soil parent material is lake, a river alluvial deposits, P in soil H value 7.3, and about 2.3% reagent agent of the content of organic matter: 55% of the embodiment of the invention 1 is opposed Long.2Jia. the green bristlegrass WP that goes out
80% ametryn WP (pesticide chemical Co., Ltd of Jiization group product)
56%2 first, 4 chlorine sodium salt pulvis (production of Fushun insecticide factory)
50% diuron WP (Suzhou, Jiangsu Province Hua Yuan agricultural biological chemicals Co., Ltd product)
For trying sugar cane breed: the blue or green sugarcane of local crackling.
Climatic condition during dispenser: after the dispenser May 5 to June 20 23.9 ℃ of daily mean temperatures, rainfall is 258.9mm.
3, weeds kind experimental field: the main weeds kind has:
Long awns barnyard grass Echinocnloa caudata Roshev; Green foxtail pennisetum alopecuoides (L.) Sprery; Alternanthera philoxeroides Alternanthera philoseroides; Japanese Cayratia Herb Cayratia japonica (Thunb.) Gagnep; Drilgrass Eqisetumramosissmum Dsef; Rhizome of nutgrass flatsedge Cyperrus rotundus L.
Test is handled: 8 processing are established in test, repeat sub-district area 36m 4 times
2, district's group is arranged at random.
| Handle | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | 80% ametryn WP | 56% mcpa sodium | 50% diuron WP |
| Mu consumption g | 150 | 180 | 210 | 300 | 120 | 50 | 200 |
| Effective dose/hm 2 | 1237.5g(ai) | 1485.0g(ai) | 1732.5g(ai) | 2475.0g(ai) | 1440.0g(ai) | 420.0g(ai) | 1500.0g(ai) |
Dispenser phase, method: the seedling stage that test is administered to sugarcane 3～4 leaves, (high by 25～40cm), weeds in field was sprouted in a large number, and most of weeds 2～3 leaf phases of place carry out, and with backpack workers and peasants type sprayer even spraying weeds cauline leaf, converting the water yield is 40kg/ mu.
Drug effect, security survey: 25 days investigation prevention effects after the dispenser, random searching 3 points in every sub-district during every some investigation investigation in 0.25m2.25 days, write down various weeds strain numbers, survey fresh weight during investigation in 45 days.Calculate the strain of weeds according to the lower class formula and count preventive effect or fresh weight preventive effect:
Otherness between processing detects with the DMRT method, observes each treatment region sugarcane seedling growing state, the symptom of chemical damage that record may occur in 7 days, 15 days, 25 after the dispenser.
4, result of the test and analysis
The main weeds in grassy weed formula sugarcane seedling stage, must be effectively controlled to guarantee the normal growth of sugarcane.Present embodiment 55% enemy is grand. and the diformazan green bristlegrass WP that goes out is good to the preventive effect of grassy weed, per hectare 1237.5 and 1485.0g (ai) handle, to behind the sugarcane field grassy weed preventive effect medicine 25 days all more than 70%, and surpassed 80% in 25 days behind the preventive effect medicine that per hectare 1732.5g (ai) and 2475.0g (ai) handle, suitable with 1440.0 processing of contrast medicament 80% ametryn WP per hectare with 50% diuron WP per hectare 1500.0g (ai) processing drug effect, see Table 6.
Preventive effect to the broad leaved weed and the rhizome of nutgrass flatsedge, present embodiment 55% enemy is grand. and the diformazan green bristlegrass WP per hectare 1237.5 and 1485.0 (ai) of going out is handled, 25 days strain preventive effects are all more than 60% behind the medicine, anti-efficient is low slightly, and surpassed 65% in 25 days behind the preventive effect medicine that per hectare 1723.5g (ai) and 2475.0g (ai) handle, be higher than contrast medicament 80% ametryn WP per hectare 1440.0 and handle and 50% diuron WP per hectare 1500.0g (ai) processing drug effect, see table 6.
25 days total careless strain preventive effects behind the medicine, 55% enemy is grand. and go out WP per hectare 1237.5,1485.0,1732.5 and 2475.0g (ai) of diformazan green bristlegrass handles and is respectively 72.7%, 65.5%, 78.9%, 89.7%, and contrast medicament 80% ametryn WP per hectare 1440.0g (ai) and 50% diuron WP per hectare 1500.0g (ai) processing are respectively 76.0% and 75.2%; 55% enemy is grand. and go out preventive effect that WP per hectare 1732.5 and 2475.0g (ai) handle of diformazan green bristlegrass is higher than that contrast medicament 80% ametryn WP per hectare 1440.0g (ai) handles and 50% enemy is grand. the go out preventive effect (table 6) of WP per hectare 1500.0g (ai) processing of diformazan green bristlegrass.
Table 6
55% enemy Long.2Jia. the green bristlegrass safety of WP of going out: according to behind the medicine 7 days, 15 days, 25 days to sugarcane, 40 days 55% enemy Long.2Jia. green bristlegrass go out WP per hectare 2475.0 and 1732.5g (ai), the sugarcane blade is had certain poisoning phenomenon, and symptom is the spot of burning, and restore normal growth gradually in 15 days behind the medicine.25% diuron WP has obvious poisoning phenomenon to sugarcane production, shows as the sugarcane yellow leaf, and plant height reduces.
Test shows 55% enemy Long.2Jia. the green bristlegrass WP that goes out all has good preventive effect to sugarcane field grass family, broad leaved weed, sedge weed, and optimal dose is 1485.0-1732.5g (ai)/hm
2The weeds 3-4 leaf phase sprays, water consumption 40Kg/ mu.
55% enemy Long.2Jia. when going out the WP spraying, green bristlegrass avoids the sugarcane blade of directly spraying, to guarantee safety as far as possible.Medicament is sprayed directly on to and may causes the growth of sugarcane seedling to be suppressed on the leaf sugarcane blade.
55% enemy Long.2Jia. green bristlegrass go out WP medication optimum period, should be the 3-4 leaf phase that weeds go out natural plant height peak after date, and in order to the absorption of grass cutting blade to medicament, too early or too late medication is unfavorable for the absorption of medicament or conduction and drug effect is descended that the lasting period shortens.
Eight: 55% enemy Long.2Jia. the green bristlegrass WP that goes out prevents and kill off sugarcane field weeds test three
Carrier: Inst. of Plant Protection, fujian Academy of Agricultural Science
Test site: Minhou County Nan Yu town, Fuzhou City
1. experimental condition
Crop: sugarcane, kind: purple follicarpium sugarcane.Subjects: weeds have lady's-grass Digitaria Sanguiralis, barnyard grass grass Echinochloacrusgalli (L.) Beauv, amur foxtail Alternanthera aequalis, Stellaria alsine Grim. Stellaria alsine, alternanthera Alternantherasessilis, ox chickweed Malachium aquaticum, stone is thin membrane inside rush stalk Cetipeda minima recklessly, naked post chrysanthemum Soliva anthemifolia, Mazus japonicus Mazusjaponicus, Ageratum conyzoides Ageratum congziodes L, cyperus iria Cyperus iria, cudweed Gnaphalium affine, false loosestrife Ludwigia prostrata, black nightshade Solanum nigrum L, eleusine indica Eleusina indica (L) Gaertn, Eclipta prostrata Eclipta prostrateL, summer dichotomous fimbristylis herb Fimbristylis aestivalis, Armstrong Polyonum aviculara, Horseweed Herb Conyza Ganadensis (L) Cronq, 20 kinds of Procumbent Falsepimpernel Lindernia Procumbens etc.
Test site: Minhou County Nan Yu town, experimental field all plant the fruit sugarcane all around, planting density: every mu of seeding quantity is the 1500-----1600 section, every section has the 2-3 tooth.The sugarcane kind was soaked (clear water) 24 hours, and the whole furrow time is 03 month 19 days, and 50 kilograms/mu of ditch sealing fertilizers.Sow after three days, and blinding (exceeding about 1 centimeter of sugarcane kind).
2. experimental scheme and arrangement
Test medicine and treatment dosage: 55% diuron .2 first, 4 chlorine. green bristlegrass is gone out wetting powder from 150 gram/mus, 180 gram/mus, 210 gram/mus, 300 gram/mus
Contrast medicament: 50% diuron wetting powder, 200 gram/mus; 80% ametryn wetting powder, 160 gram/mus: 56%2 first, 4 chlorine wetting powders, 100 gram/mus; 75 liters/mu of blanks (clear water)
The sub-district area repeats: area is 19m
2, four repetitions.
Spraying time and number of times: spraying time is 03 month 29 days, and sugarcane is in the budding period, the weed germination phase.
Use apparatus and application method: using apparatus is 16 types; Application method is spraying.2.2 liters of the water yields are converted in the sub-district.Dosage is respectively: 55% diuron .2 first, 4 chlorine. ametryn wetting powder 4.27 grams, 5.13 grams, 5.98 grams and 8.55 grams, 50% diuron, 5.70 grams, 80% ametryn wetting powder, 4.56 grams, 56%2 first, 4 chlorine wetting powders, 2.85 grams.
Meteorological data sees the following form 7: no rainfall in first day behind the dispenser same day and the medicine, behind the dispenser same day and the medicine in 2 days rainfall be 9.7mm; Day samming is 16.3 ℃, the same day weather the moon.
Table 7
Soil information: soil is paddy soils, and previous crops is vegetables, middle fertility, and about 8000 kilograms of per mu yield, duration of test topdresses 2 times, 15 kilograms of each female sealing fertilizers.
3. investigation
Investigation method: the absolute value investigation method, every sub-district random sampling 5 points (every some 0.2m) are investigated remaining weeds kind, quantity and fresh weight.Grassy weed multiplies number with branch and calculates weeds post number.
Control time and number of times: respectively investigated once in 20 days, 40 days behind medicine, 50 days sugarcanes need be earthed up behind the medicine, so the investigation secondary.
Drug effect computational methods: preventive effect=(1-(CK-PT)/CK) * 100
In the formula: the remaining number of weeds of PT-treatment region (or fresh weight); The remaining number of weeds of CK-treatment region (or fresh weight).
Influence to crop: estimate and measure each sub-district sugarcane height of seedling, the safety of examination applying pesticides.
4 interpretations of result and discussion
Evaluating drug effect: result of the test (seeing table 8 and table 9 for details): 55% diuron .2 first, 4 chlorine. the ametryn wetting powder is prevented and kill off spring planting sugarcane ground weeds effect, mu is executed 150 grams, 180 grams, 210 grams, 300 grams reason everywhere, and 20 days comprehensive quantitative effects of management of weeds are respectively 94.6%, 94.5%, 95.1% behind the medicine; 40 days comprehensive quantity prevents reaching 92.4%, 94.4%, 97.6%, 98.4% respectively behind the medicine; Weeds fresh weight preventive effect is respectively 94.1%, 95.8%, 98.1%, 98.7%.Result of the test explanation in comprehensive 2 years, 55% diuron .2 first, 4 chlorine. the ametryn wetting powder is prevented and kill off the sugarcane field weeds, preventive effect improves along with the increase of application dosage, demonstrates good preventive effect, wider killing the grass spectrum and than long lasting effect, can effectively control the harm of sugarcane weeds in seedling stage.
Behind the medicine 20 days, 40 days, 55% diuron .2 first, 4 chlorine. it is 94.5% that ametryn wetting powder mu is executed 180 gram preventive effects, and executing 200 grams and 80% ametryn wetting powder mu with contrast agricultural chemicals 50% diuron wetting powder mu, to execute 160 gram/mu preventive effects close; Execute 100 gram preventive effects apparently higher than first 4 chlorine wetting powder mus.Result of the test shows: composite dose has synergistic effect with respect to the 4 chlorine list agent of 2 first.
Behind the medicine 40 days, 55% diuron .2 first, 4 chlorine. ametryn wetting powder mu is executed 180 grams and lady's-grass, barnyard grass grass preventive effect is lower than 50% diuron wetting powder mu is slightly executed 200 gram effects, be higher than 80% ametryn wetting powder mu and execute 160 gram/mu preventive effects, the composite dose of preventive effect effect to false loosestrife all is higher than diuron and ametryn two single agent, and be similar to other weeds preventive effects; 55% diuron .2 first, 4 chlorine. composite dose of preventive effect to lady's-grass, barnyard grass grass, amur foxtail, Stellaria alsine Grim., false loosestrife of ametryn is better than 56%2 first, 4 chlorine wetting powder mus and executes 100 gram preventive effects.
Behind the medicine 40 days, 55% diuron .2 first, 4 chlorine. ametryn wetting powder mu executes that 150 grams, 180 grams, 210 grams, 300 grams and 50% diuron wetting powder mu are executed 200 grams and 80% ametryn wetting powder mu is executed 160 grams, 56%2 first, 4 chlorine wetting powder mus are executed 100 gram plant heights and blanks and compared, and it is low than blank that each handles plant height.Wherein, 55% diuron, 2 first, 4 chlorine. ametryn wetting powder mu is executed 210 grams, 300 grams reach significance level with blank difference, and other are handled with empty not obvious from contrast difference.By topdressing, after the ridging measure, plant height no significant difference between range estimation in 65 days is managed everywhere behind the medicine sees Table 10 sugarcane height of seedling results.
55% diuron .2 first. it is 150-210 gram/mu (active ingredient: 123.7-1485 gram/hectare), convert water 75-100 liter/mu spraying that the ametryn wetting powder is applied to prevent and kill off sugarcane field weeds optimal dose; The dispenser phase: sugarcane after planting 7-10 days.Based on the sugarcane field of barnyard grass grass should with kill the barnyard grass agent and use with and can reach better effect.
Table 8
Table 9:
Table 10
Nine: 55% enemy Long.2Jia. the green bristlegrass WP that goes out prevents and kill off sugarcane field weeds test four
Carrier: Jiangxi Province's agriculture chemical examination administrative institute
Test site: Feng Gang town, Yihuang County, Jiangxi
1 experimental condition
Crop and target: sugarcane, stubble cane, local conventional variety; The sugarcane field weeds mainly contain broad leaved weedses such as lady's-grass Digitaria sanguinalis, non-irrigated barnyard grass Echinochloa crusgalli, yard grass Eleusine indica and non-irrigated lotus, water pepper, leaflet desmodium.Each experimental plot weeds distributes more even, is in the 1-3 leaf phase during dispenser control.
Environmental condition: test is located at school graduates forest farm, Feng Gang town, Yihuang County, and the experimental field is the nonirrigated farmland, and physical features is smooth, grows cane for many years, and weeds are caused harm heavier.Term harmonizations such as the cultivation of each experimental plot and water and fertilizer management meet local agricultural production actual conditions.
2. experimental scheme and arrangement
Test medicine and treatment dosage:
(1) embodiment of the invention 1, every 667m
2With preparation 150g, 180g, 210g, 360g; (2) contrast agents: 50% diuron WP (Suzhou Hua Yuan agricultural biological chemicals Co., Ltd product), every 667m
2Use preparation 100g; 56%2 first, 4 chlorine soluble powder of sodium agent (the prosperous chemical industry in Anqing Co., Ltd produces), every 667m
2Use preparation 100g; 80% ametryn wetting powder (Changxing, Zhejiang Province Zhong Shan chemical industry Co., Ltd product), every 667m
2Use preparation 130g.The above-mentioned commercially available prod that is.
Arrange the sub-district: arrange each sub-district district's group at random, establishes guard row between the sub-district and separate; Every sub-district 20m
2, repeat 4 times.
Insecticide-applying way: in weeds 1-3 leaf phase May 11, sugarcane 4 leaf phase dispensers.Dispenser once altogether.Application method: with workers and peasants-16 type knapsack sprayer (spray orifice bore 1.2mm, operating pressure 4-6kg/cm
2) show over the ground and the evenly thorough spraying of weeds cauline leaf by low dosage to high dose, avoid soup to be sprayed onto on the sugarcane during dispenser as far as possible, the soup consumption is 50kg/667m
2
Meteorological data: dispenser fine day on the same day, temperature are 19-32 ℃, wind-force 1-2 level, May 12 fine commentaries on classics thunder shower, temperature 23-29 ℃, 13-17 day in May is based on shower weather, temperature 17-27 ℃.The meteorology of duration of test is normal, the special harsh climate factor do not occur.
Soil information: the experimental field belongs to red soil, shows slightly acid, and the fertility and the content of organic matter are general, and the rainwater of duration of test is more, and soil is more moistening.
Control non-target organism situation: preceding 20 days of dispenser and duration of test are not used other any weed killer herbicides.
3 investigation
Investigation method: every sub-district is got 3 points at random, every some 1m, and every sub-district is investigated 3m altogether
2Interior weeds strain number calculates the strain preventive effect.
Control time and number of times: respectively investigated preventive effect in 15 days and 30 days behind the medicine, investigate secondary altogether.
Survey data and calculating: each survey data and drug effect result of calculation of handling four repetitions sees table 12 (15 days drug effect results behind the medicine) and table 13 (30 days drug effect results behind the medicine) for details.
Drug effect is calculated and is carried out as follows:
Preventive effect (%)=(CK-PT)/CK * 100
In the formula: CK is the blank district; PT is a chemicals treatment district weeds strain number.
The significance of difference is measured " DMRT " method of employing
Influence to crop: duration of test is observed, and each chemicals treatment district sugarcane production is all acted normally, and poisoning and other obvious harmful effect do not take place.
Influence to other biological: test medicine is not obvious to the influence of sugarcane field other biological.
The result:
Each chemicals treatment is prevented and kill off sugarcane field weeds effect such as following table 11:
Table 11:
4 interpretations of result and discussion
Evaluating drug: this test shows, the present invention is mixed promptly has good preventive effect to the sugarcane field weeds, broad weed-killing spectrum all has preventive effect preferably, every 667m to broad leaved weeds such as lady's-grass, non-irrigated barnyard grass, yard grass and non-irrigated lotus, water pepper, leaflet desmodium, alternanthera philoxeroides
2Reach 81.88-93.48% with 15 days strain preventive effect behind the preparation 150---210g medicine, 30 days strain preventive effect reaches 81.83-93.18% behind the medicine, and the lasting period is longer.
During use, every 667m
2With preparation 150---210g water 40-50kg is sprayed to weeds cauline leaf and surface soil, grasp at weed germination and be unearthed, avoid during dispenser soup is sprayed onto on the sugarcane to the spraying of 4 leaf phases.
Table 12: 15 days drug effect results behind the medicine
Table 12
Ten: 55% enemy Long.2Jia. the green bristlegrass WP that goes out prevents and kill off sugarcane field weeds test five
Test cooperation unit; The academy of agricultural sciences, Jinhua
Test site: Jiang Tangzhen Jiang Tang village, Jinhua
1. material and method
Reagent agent: 55% enemy Long.2Jia. the green bristlegrass WP that goes out
Contrast medicament: 56% mcpa sodium (Zhejiang sea salt insecticide factory): 80% ametryn WP (Zhejiang Changxing First Chemicals Co., Ltd. produces, and is commercially available)
Experimental scheme:
Medicament dosage g (ai)/hm
2Consumption (gram/mu)
55% enemy Long.2Jia. the green bristlegrass WP 1237.5 150 that goes out
55% enemy Long.2Jia. the green bristlegrass WP 1,485 180 that goes out
55% enemy Long.2Jia. the green bristlegrass WP 1732.5 210 that goes out
55% enemy Long.2Jia. the green bristlegrass WP 2,475 300 that goes out
56% mcpa sodium 840 100
80% ametryn WP 1,200 100
Blank //
Test method:
The field design: test is carried out in Jiang Tangzhen Jiang Tang village, Jinhua corn field, and soil is the yellow muscle mud of red soil .PH6.4.The content of organic matter 2.4% is " agricultural university 108 " for the examination corn variety, ridge culture, experimental plot area 20m
2, repeating four times, district's group is arranged at random.
Spraying time and method: corn is at sowing on July 10, dispenser on August 11, (dispenser lady's-grass on same day 5-7 leaf, assorted leather is fully sprouted) application method employing workers and peasants 16 type knapsack sprayers, install the directed spraying cover additional, calculate, carry out directed even spraying by 450 kilograms of soups of per hectare spray.
Efficacy survey and safety are observed: survey each processing of observation applying area 7 days, 15 days, 20 days, 45 day 4 next day behind medicine influences situation to corn growth, plant height etc., and after dispenser 20 days and 45 days, twice investigation drug effect, the herbicidal effect of sub-district is put in order in range estimation earlier before the investigation, the homogeneous degree, investigate 3 points then, every some sampling 0.25m
2, investigate kind and the strain number of residual weeds, add for the last time and claim to calculate herbicidal effect by various weeds acrial part fresh weights, and lady's-grass and overall herbicidal effect are differed from boundary's significance analysis.
The experimental field main weeds:
Lady's-grass Digitaria sanguinalis (L) WDGop; Herba portulacae Portulaca oleracea L: barnyard grass grass Echinochloa crnsgallis (L) Baev: polygonum flaccidum Polygonum hydropiper L: moleplant seed Portulaca oleraceaL; Cyperus iria Cyperus iria
7 days weather situations see the following form 13 behind preceding 3 days of dispenser and the medicine:
Table 13
2. result of the test
Herbicidal effect is intuitively examined in the field: behind the medicine 7 days, the field visual observations, per hectare is grand with 55% enemy. diformazan. and go out WPl237.5,1485,1732.5,2475 grams of green bristlegrass handles the range estimation preventive effects and is 100%, observes in 15 days behind medicine, still be 100% preventive effect, uniformity between each repeats.
Overall preventive effect to weeds: as can be seen from table 14 (effect examination in 20 days behind the medicine), table 15 (effect examination in 45 days behind the medicine), per hectare is grand with 55% enemy. diformazan. and green bristlegrass is gone out under the situation of WP active ingredient 1237.5,1485,1732.5,2475 grams, preventive effect was counted in total strain of weeds in 20 days behind the medicine and be 100%, all extremely significantly be better than contrasting the preventive effect of medicament.Behind the medicine 45 days, total strain was counted preventive effect and is 100%, and total fresh weight preventive effect is 100%, all extremely significantly is better than contrasting the preventive effect of medicament.
Preventive effect to various weeds: from field observation and investigation, this medicament all has preventive effect preferably to weeds such as lady's-grass, Herba portulacae, barnyard grass grass, polygonum flaccidum, moleplant seed, cyperus irias in this experimental condition and amount ranges.
Safety to corn: from field observation and investigation, 55% enemy is grand. diformazan. and green bristlegrass is gone out WP in this experimental condition and amount ranges, and the directed spraying weeding is to corn safety.
Result of the test shows: in this experimental condition and amount ranges, by mixture herbicide of the present invention, to corn safety, corn field main weeds lady's-grass, Herba portulacae, barnyard grass grass, polygonum flaccidum, moleplant seed, cyperus iria etc. are all had comparatively ideal preventive effect.
This medicament carries out directed spraying in corn 3-4 period after weeds fully sprout, and usage amount is grasped about per hectare is with active ingredient 1237.5 grams, converts 450 kilograms of sprayings of water.
Table 14
Table 15
11: 55% enemy Long.2Jia. the green bristlegrass WP that goes out prevents and kill off sugarcane field weeds test six
1, experimental condition
Test and Selection is carried out in the state-run pearly-lustre of Hepu County farm two teams.The test sugarcane is that platform sugar 25. belongs to 1 year stubble cane, and be the 2-3 leaf phase breeding time of sugarcane during dispenser, and be the 2-4 leaf phase breeding time of weeds.The experimental field weeds are based on hispid hedyotis herb Hedyotis hispidaRetz.Density reaches 450 strains/m
2, other weeds have lady's-grass Digitaria Sangniralis (Lim) Scop, green amaranth Amaranthus spinosus L, crotalaria mucronata Crotalaria mucronata Desv, Cassia tora Cassia tora L etc.
2, experimental scheme and arrangement
Test medicine: mixture herbicide WP of the present invention
Contrast medicament: 56% methoxone sodium (Chinese Jiamusi Pesticide Plant produces, and test unit buys by oneself)
80% ametryn WP (Zhejiang Changxing First Chemicals Co., Ltd. produces, and client provides)
50% diuron WP (state-run Jiangsu Province Wuxian insecticide factory, test unit buys by oneself)
Test is handled and arrange the sub-district: see Table 16, test is established following 8 processing and is respectively handled 4 repetitions, totally 32 sub-districts, sub-district randomized arrangement, every sub-district area 30m
2
Table 16
Dispenser: during dispenser medicament is converted water by the amount of liquid medicine of the dosage of experimental scheme and 60Kg/ mu and be diluted to even soup, the weeds cauline leaf is carried out spray pesticide, spraying equipment is Lijiang river in Guilin board 16 type knapsack hand sprayers.
Investigation and record and measuring method:
Meteorological data: the meteorology of medicament drug effect performance does not appear influencing in duration of test, physical resource such as following table 17:
Table 17
The preventive effect investigation: every sub-district diagonal is got 5 points, every some investigation 0.25m
2Remaining number of weeds, 20 days investigation strain numbers behind the medicine, 45 days investigation weeds strain numbers and fresh weight behind the medicine.Security survey to crop: observe medicament behind the medicine whether sugarcane is caused poisoning.
4, result and analysis: result of the test sees for details behind table 21 medicine counted preventive effect % to strain in 45 days), table 22 (behind the medicine 45 days to the fresh weight preventive effect).
20,45 days average overall strain preventive effects to weeds are respectively 91.5%, 95.22%, 99.7%, 100% and 88.92%, 92.96%, 98.92%, 99.96% behind the mixture herbicide WP medicine of the present invention; 45 days fresh weight preventive effect is respectively 92.44%.95.49%, 98.97%, 99.97% behind the medicine.Result of the test sees table 18 (behind the medicine 20 days count preventive effect % to the strain of weeds), table 19 (behind the medicine 45 days count preventive effect % to the strain of weeds), table 20 (45 days fresh weight preventive effect % to weeds behind the medicine) for details.
Various dose is handled the preventive effect to the sugarcane weeds.Mixture herbicide WP of the present invention to the preventive effects of weeds along with dosage increase and improve.From The results of analysis of variance, significantly above difference is all arranged, wherein high dose 1732.5gai/hm between the preventive effect of four processing
2With contrast medicament 80% ametryn WP1800gai/hm
2, 50% diuron WP1875gai/hm
2The preventive effect of handling is suitable, and in, low dosage 1237.5,1485gai/hm
2The preventive effect of two processing is all not as ametryn and two contrasts of diuron medicament, and the difference more than having extremely obviously; The preventive effect of four processing of test medicine all extremely significantly is better than another contrast medicament 2 first 4 chlorine sodium and handles.
Mixture herbicide WP of the present invention has the wider grass that kills to compose: broadleaf weeds such as hispid hedyotis herb, green amaranth are had significant preventive effect, 1485gai/hm
2Above dosage is handled the preventive effect that has more than 95%; Preventive effect to monocotyledon weeds such as lady's-grass is slightly poor, but preventive effect can effectively be controlled causing harm of weeds also more than 85%.
Mixture herbicide WP quick-acting of the present invention and lasting effect: observed in 7 days behind the medicine, each handles reagent agent weeds and poisoning symptom all occurs, showing as growth and being suppressed, and leaf chlorosis, part are withered etc.; Behind the medicine 45 days, 1237.5,1485,1732.5gai/hm
2The preventive effect of three processing still surpasses 92%, illustrates that this medicament has continuation preferably.
Table 18
| Handle (gai/hm 2) | Lady's-grass | Thick ear leaf grass | Other | Add up to |
| 2 first. the enemy is grand. and green bristlegrass goes out 1237.5 | 84.20 | 92.17 | 85.81 | 92.50Cd |
| 2 first. the enemy is grand. and green bristlegrass goes out 1485 | 89.19 | 95.81 | 88.88 | 95.22Bc |
| 2 first. the enemy is grand. and green bristlegrass goes out 1732.5 | 94.23 | 100 | 98.94 | 99.70Ab |
| 2 first. the enemy is grand. and green bristlegrass goes out 2475 | 100 | 100 | 100 | 100Aa |
| Ametryn 1800 | 98.28 | 100 | 100 | 99.93Aab |
| 2 first, 4 chlorine sodium 840 | ------ | 86.03 | 88.33 | 83.98Dc |
| Diuron 1873 | 95.00 | 100 | 99.00 | 99.77Ah |
| CK (strain/m 2) | 19.04 | 457.6 | 31.2 | 508 |
Table 19
| Handle (gai/hm 2) | Lady's-grass | Thick ear leaf grass | Other | Add up to |
| 2 first. the enemy is grand. and green bristlegrass goes out 1237.5 | 83.04 | 89.37 | 87.53 | 88.92Dd |
| 2 first. the enemy is grand. and green bristlegrass goes out 1485 | 85.12 | 93.58 | 90.04 | 92.96Cc |
| 2 first. the enemy is grand. and green bristlegrass goes out 1732.5 | 93..41 | 100 | 94.77 | 98.92Bb |
| 2 first. the enemy is grand. and green bristlegrass goes out 2475 | 100 | 100 | 100 | 99.96Aa |
| Ametryn 1800 | 96.72 | 100 | 94.27 | 99.27Bb |
| 2 first, 4 chlorine sodium 840 | ------ | 87.65 | 88.96 | 84.41Ec |
| Diuron 1873 | 89.57 | 99.50 | 95.34 | 98.74Bb |
| CK (strain/m 2) | 23.4 | 458.4 | 38.4 | 520 |
Table 20
| Handle (gai/hm 2) | Lady's-grass | Thick ear leaf grass | Other | Add up to |
| 2 first. the enemy is grand. and green bristlegrass goes out 1237.5 | 87.04 | 93.44 | 88.86 | 92.44 |
| 2 first. the enemy is grand. and green bristlegrass goes out 1485 | 91.46 | 96.25 | 92.21 | 95.49 |
| 2 first. the enemy is grand. and green bristlegrass goes out 1732.5 | 95.44 | 100 | 96.26 | 98.97 |
| 2 first. the enemy is grand. and green bristlegrass goes out 2475 | 100 | 100 | 100 | 99.97 |
| Ametryn 1800 | 97.30 | 100 | 97.38 | 99.44 |
| 2 first, 4 chlorine sodium 840 | ------ | 95.74 | 93.64 | 87.77 |
| Diuron 1873 | 93.34 | 99.85 | 96.80 | 98.96 |
| CK (strain/m 2) | 140.6 | 1156.3 | 109.2 | 1406.4 |
From result of the test, reagent agent---mixture herbicide WP mu of the present invention with 1485,1732.5gai/hm
2(amount 180g, 210g/ mu) is handled all has desirable preventive effect to the sugarcane field main weeds, and the lasting period is long, slight to the poisoning that sugarcane is caused, and sugarcane can very fast recovery growth.Therefore, 55%2 first are used in suggestion in the production. and the enemy is grand. green bristlegrass go out WP1485,1732.5gai/hm
2(commodity amount 180g, 210g/ mu) prevents and kill off the sugarcane field weeds, and in weeds 4 leaf dispensers before the phase, preventive effect is good and the lasting period is long.
Preventive effect strain number: strain/1.25m is counted in 45 days strain behind the table 2l medicine
2Preventive effect:
45 days fresh weight preventive effect strain number: strain/1.25m behind table 22 medicine
2Preventive effect:
12: 55% enemy Long.2Jia. the green bristlegrass WP that goes out prevents and kill off sugarcane field weeds test seven
Carrier: Inst. of Plant Protection, fujian Academy of Agricultural Science
Test site: Minhou County Nan Yu town, Fuzhou City
1. experimental condition
Crop: sugarcane, kind: purple follicarpium sugarcane.Subjects: ox chickweed Malachium aquaticum, amur foxtail Altcrnantheraaequalis, stone is thin membrane inside rush stalk Cetipeda minima recklessly, lady's-grass Digitaria Sanguiralis, Mazus japonicus Mazus japonicus, Stellaria alsine Grim. Stellaria alsine, alternanthera Alternanthera sessilis, Armstrong Polyonum aviculara, Hairy Bittercress Cardaminehirsuta, Herba Lactucae Indicae Lactuca indicaL, naked post chrysanthemum Soliva anthemifolia, drought barnyard grass Echinochloa, cloves () Ludwigiaprostrata, naked post chrysanthemum Soliva anthemifoliaR.Br, cudweed Gnaphalium affine, summer dichotomous fimbristylis herb Fimbrislylisaestivalis, cyperus iria Cyperus iria, 18 kinds of Horseweed Herb Conyza Ganadensis (L) Cronq etc.
Environmental condition: test site: Minhou County Nan Yu town, experimental field all plant the fruit sugarcane all around, planting density: every mu of seeding quantity is the 1500-1600 section, every section has the 2-3 tooth.The sugarcane kind was soaked (clear water) 24 hours, and the whole furrow time is 03 month 16 days, and 15 kilograms/mu of ditch sealing fertilizers.The time of sowing is on 03 16th, 2003, and blinding (exceeding about 1 centimeter of sugarcane kind).
2. test arrangement
Test medicine and treatment dosage:
55% diuron .2 first. the green bristlegrass wetting powder (embodiment of the invention 1) that goes out: 150 gram/mus, 180 gram/mus, 210 gram/mus, 300 gram/mus.
Contrast medicament: 50% diuron wetting powder, 200 gram/mus; 56%2 first, 4 chlorine wetting powders, 100 gram/mus; 80% ametryn wetting powder, 160 gram/mus; 75 liters/mu of blanks (clear water).
Arrange the sub-district: district's group is arranged at random; The sub-district area repeats: area is 27m
2, four repetitions.
Spraying time and number of times: spraying time is 04 month 02 day, and sugarcane is in the bud scale phase, the weeds seedling phase.Weather is overcast to clear.
Use apparatus and application method: using apparatus is that 16 types are noncomparable; Application method is spraying.3 liters of the water yields are converted in the sub-district.Dosage is respectively: 6.0 grams, 7.2 grams, 8.4 grams, 12.0 grams and 8.0 grams, 4.0 grams, 6.4 grams.
Meteorological data: see the following form 23, the 1st～3 day rainfall is respectively 14.9mm, 8.6mm and 18.2mm behind the medicine; Day samming is 17.6 ℃.
Table 23
| Day/the moon | 2/4 | 3/4 | 4/4 | 5/4 | 6/4 | 7/4 | 8/4 | 9/4 | 10/4 | 11/4 | 12/4 |
| Temperature (℃) | 23.2 | 17.6 | 14.5 | 15.4 | 15.0 | 13.9 | 14.5 | 17.7 | 17.3 | 13.8 | 15.1 |
| Rainfall (mm) | 0 | 0.0 | 9.7 | 23.9 | 0 | 0 | 0 | 0.0 | 11.1 | 13.5 | 0 |
| Sunshine (h) | 0.5 | 1.2 | 0.0 | 0.0 | 6.9 | 0.0 | 9.6 | 5.6 | 0.0 | 0.0 | 10.8 |
Soil information: soil is paddy soils, and previous crops is vegetables, middle fertility, and about 6500 kilograms of per mu yield, duration of test topdresses 2 times, 15 kilograms of each sealing fertilizers.
3, investigation
Investigation method: absolute value investigation method.Every sub-district random sampling 5 point (every some 0.2m
2), investigate remaining weeds kind, quantity and fresh weight.Grassy weed multiplies number with branch and calculates weeds strain number.
Control time and number of times: respectively investigated once in 20 days, 40 days behind medicine, 50 days sugarcanes need be earthed up behind the medicine, so the investigation secondary.
Drug effect computational methods: preventive effect=(1-(CK-PT)/CK) * 100
In the formula: PT is the remaining number of weeds of treatment region (or fresh weight); CK is the remaining number of weeds of treatment region (or fresh weight).
30 strains (every sub-district) sugarcane height of seedling is estimated and is measured in influence to crop, investigates safety.
4, result and analysis:
Result of the test sees table 24 and table 25 for details.Mixture herbicide of the present invention is prevented and kill off spring planting sugarcane land and is executed 150g, 180g, 210g, 300g processing, and 20 days management of weeds resultant effects are respectively 99.8%, 99.4%, 100%, 100% behind the medicine; 40 days comprehensive quantity prevents being respectively 96.5%, 98.0%, 98.5%, 97.9% behind the medicine, and weeds fresh weight preventive effect is respectively 95.1%, 96.7%, 97.4%, 96.7%.Result of the test shows: mixture herbicide of the present invention has preventive effect, wider killing grass spectrum and long lasting period preferably to sugarcane weeds in seedling stage, can effectively control the harm of sugarcane weeds in seedling stage.Only be on the low side when hanging down agent to the alternanthera preventive effect.
Mixture herbicide mu of the present invention is executed 180g preventive effect and contrast agricultural chemicals 50% diuron wetting powder, 80% ametryn wetting powder is similar with 56%2 first, 4 chlorine wetting powder preventive effects, but amur foxtail, non-irrigated barnyard grass preventive effect are better than 56%2 first, 4 chlorine wetting powders.
Behind the medicine 40 days, 55% mixed agent mu of the embodiment of the invention 1 was executed 150g, 180g, 210g, 300g handle sugarcane plant height and blank comparison, and difference is not remarkable.But respectively handle the sugarcane plant height if be lower than blank, by topdress, range estimation in 65 days plant height no significant difference between reason everywhere behind the medicine after the ridging measure.
Result of the test finds that mixed agent of the present invention is applied to prevent and kill off the sugarcane weeds with dosage 180～210 gram/mus (effective ingredient: 1237.5～1732.5 gram/hectares), convert 75～100 liters of/mu sprayings of water; The dispenser phase: generally after sugarcane is sowed earthing 7～10 days to the weeds seedling phase.
Table 24
Annotate: * is check plot 1M
2Interior weeds density and fresh weight (kilogram).
Measured every sub-district sugarcane height of seedling result behind table 25 medicine in 40 days
Above-mentioned result of the test shows, mixture herbicide of the present invention has enlarged and killed the grass spectrum, reduced consumption and can reduce the pesticide resistance generation, and can reduce production costs, and it is feasible to fill a prescription.Show through 2 years five ground field trials, (2.4) leaf phase carries out cauline leaf and handles and to have preventive effect preferably behind the weeds bud, through the field trial on 2 years five ground before weeds bud 5 leaves, converting the spraying of water cauline leaf behind the sugarcane seedling handles 1 time, weeds there is preventive effect preferably, convert the spraying of water cauline leaf behind the sugarcane seedling and handle 1 time, weeds are had preventive effect preferably.The field control effectiveness test result of mixture herbicide of the present invention is as shown in table 26 below:
Table 26:
Claims (7)
1. a weed killer herbicide of preventing and treating weeds in sugarcane field is characterized in that its active ingredient is diuron, 2 first, 4 chlorine sodium and ametryns, and the mass fraction scope is:
Diuron 5～25%
2 first, 4 chlorine sodium 5～20%
Ametryn 10～50%.
2. the weed killer herbicide of control weeds in sugarcane field as claimed in claim 1 is characterized in that also comprising that the mass fraction scope is that 3～10% surfactant and mass fraction scope are 5～77% inert filler.
3. the weed killer herbicide of control weeds in sugarcane field as claimed in claim 2, it is characterized in that surfactant be selected from dispersing agent MF (MF), lauryl sodium sulfate (K12), to one or more mixing in methoxyl group fatty acyl amido benzene sulfonic acid sodium salt (LS), the sodium metnylene bis-naphthalene sulfonate (NNO).
4. the weed killer herbicide of control weeds in sugarcane field as claimed in claim 2 is characterized in that inert filler is selected from one or more the mixing in kaolin, white carbon black, the potter's clay.
5. as the weed killer herbicide of the described control weeds in sugarcane field of one of claim 1～4, it is characterized in that the mass fraction scope of diuron, 2 first, 4 chlorine sodium and ametryn is:
Diuron 17.5～13.8%
2 first, 4 chlorine sodium 12.5～8.8%
Ametryn 32.5～28.8%.
6. the weed killer herbicide of control weeds in sugarcane field as claimed in claim 5, it is characterized in that described weed killer herbicide is a wetting powder, include dispersant, wetting agent, bleeding agent and the spreader-sticker of convention amount, its mass fraction scope is: dispersant 5～9%, wetting agent is 1～2%, bleeding agent is 0～2%, and spreader-sticker is 0～2%.
7. the weed killer herbicide of control weeds in sugarcane field as claimed in claim 6 is characterized in that described weed killer herbicide is the grand 2 first green bristlegrass of the 55% enemy wetting powders that go out, and it comprises the component of following mass fraction scope:
Diuron 15%
2 first, 4 chlorine sodium 10%
Ametryn 30%
Dispersant 7%
Wetting agent 1.5%
Inert filler to 100%.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102550577A (en) * | 2012-01-13 | 2012-07-11 | 叶长东 | Herbicidal combination containing ametryn and diuron |
| CN102885064A (en) * | 2012-10-18 | 2013-01-23 | 云南云蔗科技开发有限公司 | Composite weed killer special for sugarcane field |
| CN103125511A (en) * | 2013-03-22 | 2013-06-05 | 江苏蓝丰生物化工股份有限公司 | Hexazinone, diuron and ametryn compound weedicide |
| CN104621140A (en) * | 2015-02-03 | 2015-05-20 | 广西田园生化股份有限公司 | Sugarcane field herbicide for low-volume spraying |
| CN106804608A (en) * | 2017-02-08 | 2017-06-09 | 广西农大生化科技有限责任公司 | 55% first is gone out diuron wettable powder |
| CN107333786A (en) * | 2017-08-14 | 2017-11-10 | 广西壮族自治区农业科学院植物保护研究所 | A kind of sugarcane field herbicidal synergistic composition |
| CN110432283A (en) * | 2019-08-28 | 2019-11-12 | 广东省生物工程研究所（广州甘蔗糖业研究所） | The Weed removal medicinal fertilizer and the preparation method and application thereof removed containing pungent Brominal, diuron and green bristlegrass |
| CN112205413A (en) * | 2020-10-27 | 2021-01-12 | 山东滨农科技有限公司 | Preparation method of ametryn composition wettable powder |
| CN112715538A (en) * | 2021-01-16 | 2021-04-30 | 山东滨硅新材料科技有限公司 | Formula and preparation method of agricultural synergist |
Family Cites Families (2)
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| CN1248401A (en) * | 1998-09-18 | 2000-03-29 | 广西润侬农业投资有限责任公司 | Weedicide for sugarcane field |
| CN1423935A (en) * | 2002-12-20 | 2003-06-18 | 广西易多收农用化学品有限公司 | Composite herbicide for sugar cane field |
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2006
- 2006-10-16 CN CN200610053858XA patent/CN101164414B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102550577A (en) * | 2012-01-13 | 2012-07-11 | 叶长东 | Herbicidal combination containing ametryn and diuron |
| CN102885064A (en) * | 2012-10-18 | 2013-01-23 | 云南云蔗科技开发有限公司 | Composite weed killer special for sugarcane field |
| CN103125511A (en) * | 2013-03-22 | 2013-06-05 | 江苏蓝丰生物化工股份有限公司 | Hexazinone, diuron and ametryn compound weedicide |
| CN104621140A (en) * | 2015-02-03 | 2015-05-20 | 广西田园生化股份有限公司 | Sugarcane field herbicide for low-volume spraying |
| CN106804608A (en) * | 2017-02-08 | 2017-06-09 | 广西农大生化科技有限责任公司 | 55% first is gone out diuron wettable powder |
| CN107333786A (en) * | 2017-08-14 | 2017-11-10 | 广西壮族自治区农业科学院植物保护研究所 | A kind of sugarcane field herbicidal synergistic composition |
| CN110432283A (en) * | 2019-08-28 | 2019-11-12 | 广东省生物工程研究所（广州甘蔗糖业研究所） | The Weed removal medicinal fertilizer and the preparation method and application thereof removed containing pungent Brominal, diuron and green bristlegrass |
| CN112205413A (en) * | 2020-10-27 | 2021-01-12 | 山东滨农科技有限公司 | Preparation method of ametryn composition wettable powder |
| CN112715538A (en) * | 2021-01-16 | 2021-04-30 | 山东滨硅新材料科技有限公司 | Formula and preparation method of agricultural synergist |
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