CN105104388A - Post-emergence compound herbicide containing topramezone, clopyralid and atrazine for corn - Google Patents
Post-emergence compound herbicide containing topramezone, clopyralid and atrazine for corn Download PDFInfo
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Abstract
The invention discloses a post-emergence compound herbicide containing topramezone, clopyralid and atrazine for corn. The post-emergence compound herbicide is characterized by comprising the active ingredients of the topramezone, clopyralid and atrazine according to the weight ratio of (0.1-70):(0.1-70):(0.1-80). The compound herbicide can be used for preventing and killing not only annual grassy weeds but also broad-leaved weeds and nutgrass flatsedge, is obvious in weeding effect, and has prominent synergistic effect, weeds in the whole crop growth period can be prevented and killed through once herbicide application, afterreap crops cannot be influenced, and the herbicide is ideal.
Description
Technical field
The present invention relates to technical field of pesticide, be specifically related to a kind of maize post-emergence compound herbicide containing benzene azoles humulone, clopyralid and atrazine.
Technical background
Corn is the important cereal crops of China, is also important forage crop.In recent years, along with the development of the industries such as livestock breeding, food processing, wine brewing and biodiesel, the market demand of corn constantly increases.China's maize sown area is only second to paddy rice, becomes second largest long-term cropping, and also has the trend increased.But the weeds of corn field occur general, of a great variety, and Maize at Seedling Stage is the most serious by crop smothering, and as serious in occurred at Huang-Huai-Hai summer corn crop smothering, 82% ~ 96% of crop smothering occurring area Zhan Gai district cultivated area, wherein medium above hazard area reaches 64 ~ 66%.When Maize Seedling is by Weed infestation, plant is short and small, bar spire yellow, causes middle and later periods corn growth bad, Severe Reduction.Along with the development of agricultural cience and farming techniques, chemical herbicide apply as saving of labor, save time, one of cost-effective strong well stimulation.The chemical control of corn field weed mostly after broadcasting before seedling and after seedling early stage two critical periods carry out.At present, corn herbicide kind is more, and the wherein representative kind of Control Weeds in Maize Field that has has nicosulfuron and mesotrione.But nicosulfuron has poisoning to some corn variety, although mesotrione is good to the safety of corn, not very desirable to grassy weed effect.
The maximum advantage of benzene azoles humulone is exactly safety, and it has good selectivity to the corn of the overwhelming majority, comprises ordinary maize, Sweety and waxy corn, pop corn.Can use by whole growth period after maize seedling, and the after-seedling herbicide for maize of routine only uses before the corn 2 leaf phase, then dangerous to corn in the medication of corn 6 leaf after date.Therefore it has the wider operating period than conventional herbicide after seedling, can allow the situations such as peasant household emerges in more suitable weeds, farming season time dispenser.Benzene azoles humulone and atrazine etc. have well mixed compatible.But because the atrazine lasting period is long, harmful to late stubble sensitive crop wheat, soybean, paddy rice etc., the lasting period reaches 2-3 month; If but atrazine consumption is excessive, has herbicide carryover to second stubble crop.If dosage is too small, do not have synergistic effect again.
In addition, benzene azoles humulone is to most of annual corn field common weed, especially grassy weed, has good preventive effect in addition, and with atrazine with the use of time, then dead careless speed is accelerated, 2-4 days obviously there is alphosis in weeds, and in 2 weeks, weeds are thoroughly dead, to the large grass in corn dispenser evening phase, and dayflower, the malignant weeds such as acalypha copperleaf have better control efficiency.And its lasting period is long, the check and control grass phase mixed with atrazine can reach more than 35 days.
Clopyralid (Clopyralid) is a kind of auxin of Prof. Du Yucang, its chemical constitution and many natural auxins similar, but in the tissue of plant, there is better persistence.It carries out absorbing then conducting in plant corpus, so its conductive performance is stronger mainly through the root of plant and leaf.After weeds dispenser, it is by the blade of plant or root absorption, moves up and down and be transmitted to rapidly whole plant in plant corpus.Inner sucting conduction type herbicide after seedling.After weeds dispenser, by blade or root absorption, divide a word with a hyphen at the end of a line up and down in plant corpus, pass to rapidly whole plant, the mechanism of action of its herbicide is the formation promoting plant nucleic acid, produce excessive ribonucleic, cause root growth excessive, stem and leaf growth deformity, nutrient consumption, vascular bundle transporting function is obstructed, and causes weeds dead.
Summary of the invention
The object of this invention is to provide one and can prevent and kill off grassy weed, broad leaved weed and nutgrass flatsedge can be prevented and kill off again, and a kind of maize post-emergence compound herbicide containing benzene azoles humulone, clopyralid and atrazine to succession crop safety.Overcome the defect of above two patents.
In order to realize foregoing invention object, the invention provides following technical scheme:
Containing a maize post-emergence compound herbicide for benzene azoles humulone, clopyralid and atrazine, the active component of this complex weedicide is made up of by weight for 0.1-70:0.1-70:0.1-80 benzene azoles humulone, clopyralid and atrazine.
Further scheme, the weight ratio of described benzene azoles humulone, clopyralid and atrazine is 1.5-4:10-30:25-60.
Further, the weight ratio of described benzene azoles humulone, clopyralid and atrazine is 2-3:15-20:25-40.
Further again, the weight of described benzene azoles humulone, clopyralid and atrazine and account for 0.5 ~ 85% of after-seedling herbicide for maize gross weight.
The formulation of described complex weedicide is for dispersibling oil-suspending agent, suspending agent, suspension emulsion, wetting powder or water dispersible granules.
Also comprise vegetable oil in described complex weedicide, its consumption is 20-200 milliliter/mu.
Described vegetable oil is at least one in soybean oil, corn oil, sunflower oil, rapeseed oil, castor oil, methyl oleate; Described vegetable oil consumption is 50-100 milliliter/mu.
In the present invention, vegetable oil uses as synergist, and it can now mix existing use with complex weedicide of the present invention, and its consumption mixes with complex weedicide of the present invention according to 20-200 milliliter/mu, can significantly improve herbicidal effect.
The synergy after mixture is evaluated by the co-toxicity coefficient method of Sun Yunpei, result display benzene azoles humulone, clopyralid and atrazine three kinds of active components are in 2:15-20:20-35: the composite co-toxicity coefficient of ratio is obviously greater than 120, reach remarkable synergistic effect, illustrate that benzene azoles humulone, clopyralid and atrazine three kinds of active components are comparatively suitable in 2:15-20:20-35 ratio mixture, annual single broadleaf weed and nutgrass flatsedge are had significant synergies.
The Security test test of corn is shown that the composite cauline leaf process of benzene azoles humulone, clopyralid and atrazine three kinds of active components suppresses the ED of corn growth 10%
10=2896.46, suppress the ED of weed growth 90%
90=575.31, selectivity factor=2896.46/575.31=5.03>2, think that this medicament has obvious selectivity, benzene azoles humulone, clopyralid and atrazine three kinds of active components have good safety to corn.
Complex weedicide of the present invention is shown by the field control effectiveness test of 2 years, and in corn 3 ~ 5 leaf phase, weeds 2-5 leaf does not wait the phase, and corn has no symptom of chemical damage from dispenser to maturing stage, to corn safety.The preventive effect of weeds reaches more than 80% in 10 days, within 30 days, reaches more than 90%, along with the increase of dosage, preventive effect obviously strengthens, and a dispenser can control the weeds in crop whole vegetative period, and not only herbicidal effect is remarkable, and environmentally friendly, on second stubble crop without impact.
Compared with prior art, complex weedicide of the present invention can prevent and kill off grassy weed, can prevent and kill off broad leaved weed and nutgrass flatsedge again, to corn safety, and on succession crop without impact, has a good application prospect.
Embodiment
The invention discloses a kind of maize post-emergence compound herbicide containing benzene azoles humulone, clopyralid and atrazine, those skilled in the art can use for reference present disclosure, and suitable improving technique parameter realizes.Special needs to be pointed out is, all similar replacements and change apparent to those skilled in the art, they are all deemed to be included in the present invention.Product of the present invention and application are described by preferred embodiment, related personnel obviously can not depart from content of the present invention, spirit and scope methods and applications as herein described are changed or suitably change with combination, realize and apply the technology of the present invention.
Below in conjunction with embodiment, set forth the present invention further:
Embodiment 1:37% benzene azoles humulone clopyralid atrazine dispersibles oil-suspending agent (benzene azoles humulone: clopyralid: atrazine=2:15:20)
Get 2kg benzene azoles humulone, 15kg clopyralid, 20kg atrazine, 8kgPluronic125,5kg propane diols, 8kg xanthans, 1kg methylated vegetable oil, water complements to 100kg.Through abundant mixing preparation, ball mill grinding, adjust, be packaged to be and dispersible oil-suspending agent.
Embodiment 2:53% benzene azoles humulone clopyralid atrazine suspending agent (benzene azoles humulone: clopyralid: atrazine=3:20:30)
Get 3kg benzene azoles humulone, 20kg clopyralid, 30kg atrazine, 8kg sodium lignin sulfonate (dispersant), 5kg fatty alcohol-polyoxyethylene ether (wetting agent), 1kg xanthans (thickener), 2kg polyoxyethylene polyoxy propyl alcohol amidogen ether (defoamer), 5kg ethylene glycol (antifreezing agent), carrier water 26kg.Through abundant mixing preparation, ball mill grinding, adjust, be packaged to be suspending agent.
Through abundant mixing preparation, ball mill grinding, adjust, be packaged to be suspending agent.
Embodiment 3:76.5% benzene azoles humulone clopyralid atrazine water dispersible granule (benzene azoles humulone: clopyralid: atrazine=1.5:30:45=1:20:30)
Get 1.5kg benzene azoles humulone, 30kg clopyralid, 45kg atrazine, 7kgD-425,5kgEFW, 5kg ammonium sulfate, 2kg polyethylene glycol, kaolin supplies 100%, obtains water dispersible granules through fully mixing, air-flow crushing, mixing, granulation, drying and screening.
Embodiment 4:64% benzene azoles humulone clopyralid atrazine wetting powder (benzene azoles humulone: clopyralid: atrazine=4:10:50)
Get 4kg benzene azoles humulone, 10kg clopyralid, 50kg atrazine, 7kgD-425,5kgEFW, 2kg polyethylene glycol, kaolin supplies 100%, through fully mixing, air-flow crushing drying obtain wetting powder.
Embodiment 5:70% benzene azoles humulone clopyralid atrazine wetting powder
(benzene azoles humulone: clopyralid: atrazine=5:5:60)
Get 5kg benzene azoles humulone, 5kg clopyralid, 60kg atrazine, 7kgD-425,5kgEFW, 2kg polyethylene glycol, kaolin supplies 100%, through fully mixing, air-flow crushing drying obtain wetting powder.
Embodiment 6:75% benzene azoles humulone clopyralid atrazine water dispersible granule (benzene azoles humulone: clopyralid: atrazine=5:20:50)
Get 5kg benzene azoles humulone, 20kg clopyralid, 50kg atrazine, 7kgD-425,5kgEFW, 5kg ammonium sulfate, 2kg polyethylene glycol, kaolin supplies 100%, obtains water dispersible granules through fully mixing, air-flow crushing, mixing, granulation, drying and screening.
Embodiment 7: benzene azoles humulone, clopyralid and atrazine cauline leaf process synergy toxicity determination test are reported
1 test objective
Under greenhouse experiment, adopt pot-culture method, the herbicidal effect of research benzene azoles humulone, clopyralid and atrazine ternary built, and the synergy type after using with the co-toxicity coefficient method evaluation three different proportion of Sun Yunpei, for the rational mixture of benzene azoles humulone, clopyralid and atrazine provides scientific basis.
2 experimental conditions
2.1 for studying thing corn variety: Zheng Dan 958
2.2 for examination weeds lady's-grass (Digitariasanguinalis (Linn.) Scop.), green foxtail (Setariaviridis (L.) Beauv.), acalypha copperleaf (AcalyphaaustralisL.), lamb's-quarters (ChenopodiumalbumL.), difformed galingale herb (CyperusdifformisL.) (upper one year gathered seed in field, and germination rate is more than 85%).
The cultivation of 2.3 experimental conditions and examination material
The cultivation of test material is carried out, temperature 25-35 DEG C in illumination cultivation room.Choosing diameter is 15cm, and be highly the vinyon basin alms bowl of 15cm, the permeable hole of 1cm diameter is beaten in the bottom of basin alms bowl.Permeable hole double-layer filter paper covers, and the loam that in alms bowl, loading prepares to sterilize in advance, to alms bowl height 10cm place, soaks into soil with clear water from bottom.During test, often kind of weed seed 30-40 grain is evenly put into basin, earthing 0.5cm, the required moisture of growth between weeds culture period, should be supplemented.
2.4 other conditions
With the regular moisturizing of mode (not watering in 2 days after medicine) of bottom infiltration, keep soil moisture.
3 experimental scheme
3.1 medicament
3.1.1 reagent agent
The 97% former medicine of benzene azoles humulone (BASF European Co., Ltd);
The former medicine of 95% clopyralid (Anhui Fengle Agricultural Co., Ltd);
The former medicine of 92% atrazine (Xuanhua Agriculture Chemicals Co., Ltd., Hebei).
3.1.2 reagent agent drug solution preparing
Take quantitative former medicine with electronic balance, add appropriate emulsifier, with acetone solution, finally with the POLYSORBATE 80 aqueous solution of 0.1%, above-mentioned former medicine is diluted to desired concn.
3.1.3 experimental scheme
3.1.3.1 the synergy of benzene azoles humulone and atrazine
Benzene azoles humulone, atrazine single dose and 5 benzene azoles humulones and atrazine mixture preparation are established 5 dosage respectively, separately establishes blank, each test process repetition 4 times.Treatment agent dosage refers to table 1.
Table 1 tests process and test level (concentration ga.i./kg)
3.1.3.2 the synergy of benzene azoles humulone, the best mixture of atrazine and atrazine
Benzene azoles humulone atrazine mixture, clopyralid single dose and 5 mixture preparations are established 5 dosage respectively, separately establishes blank, each test process repetition 4 times.Treatment agent dosage refers to table 2.
Table 2 tests process and test level (concentration ga.i./kg)
3.2 application method
3.2.1 application method
In corn 3 leaf phase, weeds 2-4 leaf phase cauline leaf spraying process.Spray medicine adopts the indoor crown-block type atomizing tester of adjustable speed, simulation field conventional spraying methods.Shower nozzle is Fan spray head, and model is Teejer8002E type, spray value 40 kgs/acre.Spray height 0.5 meter, spraying swath 0.7 meter, leg speed 0.224 meter per second.Atomisation pressure 2.0 MPa, flow 697 liters/min.
3.2.2 spraying time and number of times
Test and carry out reagent spray process on June 2nd, 2014, dispenser 1 time.
4 investigation methods
Record the damage symptoms of corn and weeds after dispenser in detail, 20d after medicine, carries out fresh weight measurement, and compared with control treatment, calculates fresh weight preventive effect.
4.1 synergy assay methods
The co-toxicity coefficient method evaluation of result of the test Sun Yunpei use with after synergy type.
Its actual toxicity index, mixture theoretical toxicity index, co-toxicity coefficient is calculated according to SUN, Y-P (Sun Yunpei) method.Take log concentration as X, damage by disease and insect preventive effect probit value is Y, asks regression equation.
Actual toxicity index=standard agent LD
50the LD of/mixture
50× 100
Theoretical toxicity index=∑ (percentage of this medicament active ingredient of the toxicity index of reagent agent × in mixture)
Actual toxicity index/theoretical toxicity index × 100 of co-toxicity coefficient=mixture
In test with benzene azoles humulone, atrazine for standard agent.
Criterion: co-toxicity coefficient <80 is antagonism, be summation action between 80-120, >120 is synergistic effect.
5 results and analysis
The synergy of 5.1 benzene azoles humulones and atrazine
5.1.1 benzene azoles humulone and atrazine mixture are to the fresh weight preventive effect of weeds
After table 3 benzene azoles humulone and atrazine mixture medicine, 20d is to the fresh weight preventive effect of weeds
In table, control efficiency is the mean value of four data.
5.1.2 benzene azoles humulone and atrazine mixture are to the synergy of weeds
As shown in Table 3: medicament is to the toxic action situation of weeds and preventive effect.Its respective virulence regression equation, LD is calculated by DPS software
50, actual toxicity index, theoretical toxicity index and co-toxicity coefficient.List in table 4.
Table 4: benzene azoles humulone and atrazine mixture are to the synergy of weeds
| Process | Regression equation | Correlation coefficient | LD 50 | Actual toxicity index | Theoretical toxicity index | Coefficient of synergism |
| A | Y＝1.7826x+8.0486 | 0.9951 | 0.0195 | 7707.69 | / | / |
| B | Y＝2.0079x+4.6447 | 0.9909 | 1.5030 | 100 | / | / |
| C | Y＝1.3803x+5.8243 | 0.9983 | 0.2528 | 594.54 | 285.55 | 208.21 |
| D | Y＝1.4985x+6.2273 | 0.9981 | 0.1517 | 990.77 | 392.60 | 252.36 |
| E | Y＝1.9839x+7.0270 | 0.9997 | 0.0951 | 1580.44 | 547.51 | 288.66 |
| F | Y＝1.8939x+6.8723 | 0.9997 | 0.1027 | 1463.49 | 791.61 | 184.88 |
| G | Y＝1.9051x+6.8543 | 0.9996 | 0.1063 | 1413.92 | 1149.34 | 123.02 |
| H | Y＝1.8952x+6.8281 | 0.9994 | 0.1085 | 1385.25 | 1621.54 | 85.43 |
From test, the co-toxicity coefficient of process C, D, E, F, G, H is respectively: 208.21,252.36,288.66,184.88,123.02,85.43, and co-toxicity coefficient is all greater than 80, has addition or synergistic effect.Wherein, the co-toxicity coefficient of process C, D, E, F, G is greater than 120, and have synergistic effect, that is benzene azoles humulone is at 1.5-4, and atrazine is mixture within the scope of 25-60, all has synergistic effect.
The co-toxicity coefficient particularly processing E is 288.66 to the maximum, has remarkable synergistic effect.
The synergy of the best mixture of 5.2 benzene azoles humulones, atrazine and clopyralid
5.2.1 benzene azoles humulone atrazine fresh weight preventive effect to weeds mixed with clopyralid
Table 5 benzene azoles humulone atrazine fresh weight preventive effect to weeds mixed with clopyralid
In table, control efficiency is the mean value of four data.
5.2.2 benzene azoles humulone atrazine indoor virulence to weeds mixed with clopyralid and synergy
As shown in Table 5: medicament is to the toxic action situation of weeds and preventive effect.By its respective virulence regression equation, LD of formulae discovery
50, actual toxicity index, theoretical toxicity index and co-toxicity coefficient.List in table 6.
Table 6: benzene azoles humulone atrazine mixed ratio different from clopyralid is to the indoor virulence of weeds and synergy
| Process | Regression equation | Correlation coefficient | LD 50 | Actual toxicity index | Theoretical toxicity index | Coefficient of synergism |
| A | Y＝1.8266x+6.7238 | 0.9940 | 0.1138 | 100 | / | / |
| B | Y＝1.1822x+5.5149 | 0.9924 | 0.3668 | 31.03 | / | / |
| C | Y＝1.7833x+6.7012 | 0.9933 | 0.1112 | 102.34 | 74.45 | 137.46 |
| D | Y＝1.8291x+6.7762 | 0.9964 | 0.1069 | 106.45 | 67.68 | 157.28 |
| E | Y＝1.8390x+6.8018 | 0.9957 | 0.1048 | 108.59 | 62.72 | 173.13 |
| F | Y＝1.7371x+6.6167 | 0.9930 | 0.1173 | 97.02 | 58.95 | 164.58 |
| G | Y＝1.6859x+6.5041 | 0.9913 | 0.1282 | 88.77 | 55.98 | 158.57 |
From test, the co-toxicity coefficient of process C, D, E, F, G is respectively: 137.46,157.28,173.13,164.58,158.57, and its co-toxicity coefficient is all greater than 120, has synergistic effect; Wherein the co-toxicity coefficient of E is maximum, is 173.13, reaches significant synergistic effect.
6 overall merits
Shown by above synergy measurement result, benzene azoles humulone, clopyralid and atrazine three all have preferably control efficiency to corn field weed so that the ratio of 1.5-4:10-30:25-60 is composite.
Green bristlegrass WG (benzene azoles humulone: clopyralid: atrazine=1.5:30:45=1:20:30) the cauline leaf process of embodiment 8:76.5% benzene azoles humulone clopyralid is to the safety indoor measurement test report of corn
1 test objective
Under greenhouse experiment, adopt pot-culture method, study benzene azoles humulone, clopyralid and the process of atrazine ternary built cauline leaf to the safety of corn, for the rational mixture of benzene azoles humulone, clopyralid and atrazine provides scientific basis.
2 experimental conditions
2.1 for studying thing corn variety: Zheng Dan 958
2.2 for examination weeds lady's-grass (Digitariasanguinalis (Linn.) Scop.), green foxtail (Setariaviridis (L.) Beauv.), recessed head amaranth (AmaranthusascendensLoisel.), lamb's-quarters (ChenopodiumalbumL.) (upper one year gathered seed in field, and germination rate is more than 85%).
The cultivation of 2.3 experimental conditions and examination material
The cultivation of test material is carried out, temperature 25-30 DEG C in illumination cultivation room.Choosing diameter is 15cm, and be highly the vinyon basin alms bowl of 15cm, the permeable hole of 1cm diameter is beaten in the bottom of basin alms bowl.Permeable hole double-layer filter paper covers, and the loam that in alms bowl, loading prepares to sterilize in advance, to alms bowl height 10cm place, soaks into soil with clear water from bottom.During test, corn seed 20, often kind weed seed 30-40 grain is evenly put into basin earthing 0.5cm, put into greenhouse and cultivate (25-30 DEG C), the required moisture of growth between maize seedling and weeds culture period, should be supplemented.Stay the seedling of 10 strain stalwartnesses after all sprouting, grow to dispenser process when 3 ~ 4 leaves and weeds grow to 3 ~ 5 until maize seedling.
2.4 other conditions
With the regular moisturizing of mode (not watering in 2 days after medicine) of bottom infiltration, keep soil moisture.
3 experimental scheme
3.1 medicament
3.1.1 reagent agent
The 97% former medicine of benzene azoles humulone (BASF European Co., Ltd);
The former medicine of 95% clopyralid (Anhui Fengle Agricultural Co., Ltd);
The former medicine of 92% atrazine (Xuanhua Agriculture Chemicals Co., Ltd., Hebei).
3.1.2 reagent agent drug solution preparing
Take quantitative former medicine with electronic balance, add appropriate emulsifier, with acetone solution, finally with the POLYSORBATE 80 aqueous solution of 0.1%, above-mentioned former medicine is diluted to desired concn.
3.2 application method
3.2.1 application method
In corn 3 leaf phase, weeds 2-4 leaf phase cauline leaf spraying process.Spray medicine adopts the indoor crown-block type atomizing tester of adjustable speed, simulation field conventional spraying methods.Shower nozzle is Fan spray head, and model is Teejer8002E type, spray value 40 kgs/acre.Spray height 0.5 meter, spraying swath 0.7 meter, leg speed 0.224 meter per second.Atomisation pressure 2.0 MPa, flow 697 liters/min.
3.2.2 spraying time and number of times
Test and carry out reagent spray process on June 2nd, 2015, dispenser 1 time.
4 investigation and computational methods
4.1 crop investigation
After dispenser, investigate each process corn with or without symptom of chemical damage, if having, record symptom of chemical damage, grade in detail, after medicine 20 days, measure each process corn fresh weight, calculate fresh weight inhibition, with the safety of clear and definite test medicine to corn.
4.2 weedy rices
The damage symptoms (as growth inhibition, chlorosis, deformity etc.) of detailed record weeds after dispenser, after medicine 20 days, weighs each process weeds acrial part fresh weight, the fresh weight preventive effect of calculating weeds.
4.3 computational methods
Regression analysis is carried out, dosage ED when calculating correlation coefficient and suppress crop 10% by the probability value of DPS software to the logarithm value of drug dose and corn fresh weight inhibition
10, and suppress weeds 90%ED
90, obtain selectivity index.
Selectivity index=ED
10/ ED
90
5 results and analysis
5.1 benzene azoles humulone clopyralid atrazine cauline leaf process are to the safety of corn
Within after dispenser 5 days, observe, benzene azoles humulone clopyralid green bristlegrass high concentration 4000mg/kg processing section corn is also very safe, and plant height is normal, and the normal and blank process of other concentration process corn growing way is not all significantly distinguished.
Table 1 activity of weeding and crop safety ocular estimate evaluation criterion
Table 276.5% benzene azoles humulone clopyralid green bristlegrass WG is to the inhibitory action of corn
Table 376.5% benzene azoles humulone clopyralid green bristlegrass WG is to the fresh weight preventive effect of weeds
As shown in Table 3: this medicament to the toxic action situation of weeds and preventive effect, by formulae discovery its each virulence regression equation, LD
50, list in table 4.
Table 4: virulence regression equation and LD
50
| Process | Regression equation | Correlation coefficient | LD 50 | 95% confidence interval |
| A | Y＝-1.2503+2.7290x | 0.9974 | 195.1217 | 179.5167～212.0831 |
As shown in Table 4: the LD of 76.5% benzene azoles humulone clopyralid green bristlegrass WG
50for: 195.1217,95% confidence interval is 179.5167 ~ 212.0831.Namely this result of the test shows, 4 times of process of benzene azoles humulone clopyralid green bristlegrass cauline leaf process normal concentration are also very safe to corn, and corn growth is normal.
By table 2, table 3, can in the hope of suppressing the ED of corn growth 10% by DPS software
10=2896.46, suppress the ED of weed growth 90%
90=575.31, selectivity factor=2896.46/575.31=5.03>2, think that this medicament has obvious selectivity, can field control effectiveness test be carried out.
Embodiment 9: field control effectiveness test
Complex weedicide of the present invention is shown by the field control effectiveness test of 2 years, in corn 3 ~ 5 leaf phase, weeds 1 ~ 5 leaf does not wait the phase, 42% benzene azoles dichloro green bristlegrass of the present invention is utilized to dispersible oil-suspending agent (2% benzene azoles humulone+15% clopyralid+25% atrazine), its dosage is respectively 80,100,120,200 milliliters/mu, and is watered 40 kgs/acre and sprays, 10,30 days and maturing stage range estimation corn safety and Weed-control effect, 10, within 30 days, survey all preventive effects, result is as following table:
By range estimation, corn has no symptom of chemical damage from dispenser to maturing stage, to corn safety.The preventive effect 80 milliliters/mu of weeds reaches more than 75.3% in 10 days, within 30 days, reach more than 90.5%, along with the increase of dosage, preventive effect obviously strengthens, good herbicidal effect can be reached corn field 100 milliliters/mu, with be used alone wherein a kind of active ingredient and compare, expand herbicide spectrum, to broad leaved weed and nutgrass flatsedge, there is obvious synergistic effect.A dispenser can control the weeds in crop whole vegetative period, and not only herbicidal effect is remarkable, and environmentally friendly, on second stubble crop without impact, little to the pollution of environment, to people, animal, birds and beneficial organism safety, is conducive to keeping ecological balance.In addition, weed killer herbicide of the present invention adopts physical method processing, and production technology is simple, and three-waste free discharge in production process, has no adverse effects to ecotope.It is the desirable complex weedicide of current control efficiency.
Embodiment 10: field control effectiveness test
Complex weedicide of the present invention is shown by the field control effectiveness test of 2 years, in corn 3 ~ 5 leaf phase, weeds 1 ~ 5 leaf does not wait the phase, utilize 64% benzene azoles humulone clopyralid atrazine wetting powder (benzene azoles humulone: clopyralid: atrazine=4:10:50) of the present invention, its dosage is respectively 40,50,60,100 grams/acre, and be watered 40 kgs/acre and spray, 10,30 days and maturing stage range estimation corn safety and Weed-control effect, 10, within 30 days, survey all preventive effects, result is as following table:
By range estimation, corn has no symptom of chemical damage from dispenser to maturing stage, to corn safety.The preventive effect 80 milliliters/mu of weeds reaches more than 75.3% in 10 days, and within 30 days, reach more than 90.5%, along with the increase of dosage, preventive effect obviously strengthens.Be used alone wherein a kind of active ingredient and compare, expand herbicide spectrum, to broad leaved weed and nutgrass flatsedge, there is obvious synergistic effect.Particularly add after soybean oil, obvious enhancing is to the preventive effect of weeds, add soybean oil 100 milliliters/mu corn field 50 grams/acre, can reach beyond thought preventive effect, a dispenser can control the weeds in crop whole vegetative period, not only herbicidal effect is remarkable, and environmentally friendly, on second stubble crop without impact, little to the pollution of environment, to people, animal, birds and beneficial organism safety, be conducive to keeping ecological balance.In addition, weed killer herbicide of the present invention adopts physical method processing, and production technology is simple, and three-waste free discharge in production process, has no adverse effects to ecotope.It is the desirable complex weedicide of current control efficiency.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. containing a maize post-emergence compound herbicide for benzene azoles humulone, clopyralid and atrazine, it is characterized in that: the active component of this complex weedicide is made up of by weight for 0.1-70:0.1-70:0.1-80 benzene azoles humulone, clopyralid and atrazine.
2. complex weedicide according to claim 1, is characterized in that: the weight ratio of described benzene azoles humulone, clopyralid and atrazine is 1.5-4:10-30:25-60.
3. complex weedicide according to claim 2, is characterized in that: the weight ratio of described benzene azoles humulone, clopyralid and atrazine is 2-3:15-20:25-40.
4. complex weedicide according to claim 1, is characterized in that: the weight of described benzene azoles humulone, clopyralid and atrazine and account for 0.5 ~ 85% of after-seedling herbicide for maize gross weight.
5. the complex weedicide according to any one of claim 1-4, is characterized in that: the formulation of described complex weedicide is for dispersibling oil-suspending agent, suspending agent, suspension emulsion, wetting powder or water dispersible granules.
6. the complex weedicide according to any one of claims 1-3, is characterized in that: also comprise vegetable oil in described complex weedicide, and its consumption is 20-200 milliliter/mu.
7. the complex weedicide according to claims 6, is characterized in that: described vegetable oil is at least one in soybean oil, corn oil, sunflower oil, rapeseed oil, castor oil, methyl oleate; Described vegetable oil consumption is 50-100 milliliter/mu.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115363036A (en) * | 2021-05-20 | 2022-11-22 | 四川利尔作物科学有限公司 | Herbicide composition containing topramezone and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101617653A (en) * | 2008-07-02 | 2010-01-06 | 山东滨农科技有限公司 | Compound herbicide composition |
| CN101617675A (en) * | 2008-07-02 | 2010-01-06 | 山东滨农科技有限公司 | Herbicide composition |
| CN102265850A (en) * | 2010-06-04 | 2011-12-07 | 南京华洲药业有限公司 | Weeding composition containing bentazone, clopyralid and atrazine, and application thereof |
| CN103141487A (en) * | 2013-02-05 | 2013-06-12 | 辽宁海佳农化有限公司 | Herbicide composition containing carfentrazone-ethyl, fluroxypyr and atrazine and preparation method |
| CN103181391A (en) * | 2011-12-30 | 2013-07-03 | 山东滨农科技有限公司 | Herbicide composition comprising topramezone and atrazine |
| CN103503884A (en) * | 2013-10-12 | 2014-01-15 | 河北省农林科学院粮油作物研究所 | Topramezone*clopyralid composite corn field herbicide |
-
2015
- 2015-09-20 CN CN201510608683.3A patent/CN105104388B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101617653A (en) * | 2008-07-02 | 2010-01-06 | 山东滨农科技有限公司 | Compound herbicide composition |
| CN101617675A (en) * | 2008-07-02 | 2010-01-06 | 山东滨农科技有限公司 | Herbicide composition |
| CN102265850A (en) * | 2010-06-04 | 2011-12-07 | 南京华洲药业有限公司 | Weeding composition containing bentazone, clopyralid and atrazine, and application thereof |
| CN103181391A (en) * | 2011-12-30 | 2013-07-03 | 山东滨农科技有限公司 | Herbicide composition comprising topramezone and atrazine |
| CN103141487A (en) * | 2013-02-05 | 2013-06-12 | 辽宁海佳农化有限公司 | Herbicide composition containing carfentrazone-ethyl, fluroxypyr and atrazine and preparation method |
| CN103503884A (en) * | 2013-10-12 | 2014-01-15 | 河北省农林科学院粮油作物研究所 | Topramezone*clopyralid composite corn field herbicide |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115363036A (en) * | 2021-05-20 | 2022-11-22 | 四川利尔作物科学有限公司 | Herbicide composition containing topramezone and application thereof |
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