CN117016555A - Weeding composition containing mequindox and propanil and application thereof - Google Patents
Weeding composition containing mequindox and propanil and application thereof Download PDFInfo
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- CN117016555A CN117016555A CN202310972456.3A CN202310972456A CN117016555A CN 117016555 A CN117016555 A CN 117016555A CN 202310972456 A CN202310972456 A CN 202310972456A CN 117016555 A CN117016555 A CN 117016555A
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- propanil
- mequindox
- weeds
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- LFULEKSKNZEWOE-UHFFFAOYSA-N propanil Chemical compound CCC(=O)NC1=CC=C(Cl)C(Cl)=C1 LFULEKSKNZEWOE-UHFFFAOYSA-N 0.000 title claims abstract description 74
- CUJMCPPBTUATEJ-UHFFFAOYSA-N 1-(3-methyl-4-oxido-1-oxoquinoxalin-1-ium-2-yl)ethanone Chemical compound C1=CC=C2[N+](=O)C(C(=O)C)=C(C)N([O-])C2=C1 CUJMCPPBTUATEJ-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000000203 mixture Substances 0.000 title claims abstract description 46
- 238000009333 weeding Methods 0.000 title claims abstract description 31
- 241000196324 Embryophyta Species 0.000 claims abstract description 63
- 239000004480 active ingredient Substances 0.000 claims abstract description 8
- 241001290610 Abildgaardia Species 0.000 claims abstract description 6
- 230000002363 herbicidal effect Effects 0.000 claims description 27
- 239000004009 herbicide Substances 0.000 claims description 25
- 240000007594 Oryza sativa Species 0.000 claims description 8
- 235000007164 Oryza sativa Nutrition 0.000 claims description 7
- 235000009566 rice Nutrition 0.000 claims description 7
- 241000209504 Poaceae Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 45
- 230000002195 synergetic effect Effects 0.000 abstract description 11
- 238000012360 testing method Methods 0.000 description 17
- 241000192043 Echinochloa Species 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 8
- 239000000375 suspending agent Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 7
- 235000019198 oils Nutrition 0.000 description 7
- 239000000575 pesticide Substances 0.000 description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- 244000025254 Cannabis sativa Species 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 206010059866 Drug resistance Diseases 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000004083 survival effect Effects 0.000 description 3
- FPMPZEHRIIAVCO-UHFFFAOYSA-N 3-(2-phenylethyl)-2-(3-phenylpropyl)phenol Chemical compound C(CC1=CC=CC=C1)C=1C(=C(C=CC1)O)CCCC1=CC=CC=C1 FPMPZEHRIIAVCO-UHFFFAOYSA-N 0.000 description 2
- 239000005502 Cyhalofop-butyl Substances 0.000 description 2
- TYIYMOAHACZAMQ-CQSZACIVSA-N Cyhalofop-butyl Chemical group C1=CC(O[C@H](C)C(=O)OCCCC)=CC=C1OC1=CC=C(C#N)C=C1F TYIYMOAHACZAMQ-CQSZACIVSA-N 0.000 description 2
- 241001553700 Euphorbia lathyris Species 0.000 description 2
- 244000184734 Pyrus japonica Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 241001148683 Zostera marina Species 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- OOCMUZJPDXYRFD-UHFFFAOYSA-L calcium;2-dodecylbenzenesulfonate Chemical compound [Ca+2].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O.CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O OOCMUZJPDXYRFD-UHFFFAOYSA-L 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- QYDYPVFESGNLHU-UHFFFAOYSA-N elaidic acid methyl ester Natural products CCCCCCCCC=CCCCCCCCC(=O)OC QYDYPVFESGNLHU-UHFFFAOYSA-N 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- QYDYPVFESGNLHU-KHPPLWFESA-N methyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC QYDYPVFESGNLHU-KHPPLWFESA-N 0.000 description 2
- 229940073769 methyl oleate Drugs 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 239000012053 oil suspension Substances 0.000 description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 235000012424 soybean oil Nutrition 0.000 description 2
- 239000003549 soybean oil Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- ADDQHLREJDZPMT-AWEZNQCLSA-N (S)-metamifop Chemical compound O=C([C@@H](OC=1C=CC(OC=2OC3=CC(Cl)=CC=C3N=2)=CC=1)C)N(C)C1=CC=CC=C1F ADDQHLREJDZPMT-AWEZNQCLSA-N 0.000 description 1
- MUKYLHIZBOASDM-UHFFFAOYSA-N 2-[carbamimidoyl(methyl)amino]acetic acid 2,3,4,5,6-pentahydroxyhexanoic acid Chemical compound NC(=N)N(C)CC(O)=O.OCC(O)C(O)C(O)C(O)C(O)=O MUKYLHIZBOASDM-UHFFFAOYSA-N 0.000 description 1
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- 208000018380 Chemical injury Diseases 0.000 description 1
- 241001530884 Gynura segetum Species 0.000 description 1
- 244000211187 Lepidium sativum Species 0.000 description 1
- 235000007849 Lepidium sativum Nutrition 0.000 description 1
- 241000522169 Lespedeza Species 0.000 description 1
- 240000000275 Persicaria hydropiper Species 0.000 description 1
- 235000017337 Persicaria hydropiper Nutrition 0.000 description 1
- 244000234609 Portulaca oleracea Species 0.000 description 1
- 235000001855 Portulaca oleracea Nutrition 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 244000098338 Triticum aestivum Species 0.000 description 1
- 241000159213 Zygophyllaceae Species 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 210000000805 cytoplasm Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000002552 dosage form Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- UYMQWGLCXYHTES-UHFFFAOYSA-N phenyl(1h-pyrazol-5-yl)methanone Chemical group C=1C=CC=CC=1C(=O)C1=CC=NN1 UYMQWGLCXYHTES-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009165 saligot Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 239000009685 tusanqi Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000004562 water dispersible granule Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000004563 wettable powder Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
- A01N47/18—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing a —O—CO—N< group, or a thio analogue thereof, directly attached to a heterocyclic or cycloaliphatic ring
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
- A01N37/22—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P13/00—Herbicides; Algicides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Plant Pathology (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a weeding composition containing mequindox and propanil, wherein the active ingredients consist of mequindox and propanil, and the ratio of the mequindox to the propanil is 20:1-1:50 in terms of mass ratio. The weeding composition containing the mequindox and the propanil can be applied to the control of crop weeds, and the weeding composition containing the mequindox and the propanil is verified to have good control effects on gramineous weeds, broadleaf weeds and sedge weeds in paddy fields after being applied, and the combination of the mequindox and the propanil has remarkable synergistic effect and is safe to crops.
Description
Technical Field
The invention belongs to the technical field of pesticides, and relates to a weeding composition containing mequindox and propanil and application thereof.
Background
At present, due to the reasons of rapid popularization of the light simplified cultivation technology, long-distance operation of harvesting machinery in a trans-regional area, unreasonable use of herbicides and the like, the weed communities in the grain crop fields continuously change, the population structure is gradually complicated, the occurrence density of malignant weeds is increased year by year, the drug resistance level is continuously increased, and the production safety of grain crops is seriously threatened.
Mequindox is a benzoyl pyrazole herbicide, and is developed by Liaoning Xianda agricultural science Co. Has super strong systemic conduction effect, has excellent prevention effect on older weeds, and can prevent and remove resistant moleplant seeds, barnyard grass, nity grass, messy grass, rice Lespedeza, jiang Bai and other weeds. The mequindox has different action mechanisms with the cyhalofop-butyl and the metamifop, and the mequindox has excellent performance under the condition that the cyhalofop-butyl and the metamifop-butyl generate serious resistance.
Propanil (propanil) belongs to a contact herbicide and is mainly used for preventing and killing weeds such as barnyard grass, gloriopsis japonica, caltrop, polygonum hydropiper, cress, purslane and the like in paddy fields. The propanil is hardly transported in the plant body, only the contact part of the medicament plays a role in contact, the medicament enters the barnyard grass body, the water balance of the barnyard grass body is destroyed, the water loss is accelerated, the cytoplasms are separated, and the blades are gradually dried and dead.
The patent CN113040146A discloses a weeding composition containing propanil and cyclobenone, the active ingredients of the weeding composition comprise the propanil and the cyclobenone, the mass ratio of the propanil to the cyclobenone in the weeding composition is 15:1-1:10, and the weeding composition has a remarkable control effect on grassy weeds, broadleaf weeds and sedge weeds in a rice field and also has a certain control effect on field oat and wheat viewing. The above patent uses mequindox and propanil as active ingredients, respectively, but the combined use of mequindox and propanil is not reported in the literature, and the combined use of the same as the herbicide is difficult to predict.
Chemical weeding is the most economical and effective means in farmland weed control, but the innovation of new varieties of current herbicides is slow, the herbicides have the defects of insufficient broad-spectrum weeding performance, poor weeding effect, chemical injury, more soil residues, generation of herbicide resistance and the like, and meanwhile, the problems of weed resistance, resistance evolution and the like are easily caused by continuously using single varieties or single action modes of chemical herbicides for a long time. The inventor of the patent application explores a compound herbicide composition containing mequindox and propanil through intensive research, the composition has excellent removing effect on field weeds, the composition does not appear in known documents, and on the premise of no creative knowledge of verification of compound synergy data, the person of ordinary skill in the art is difficult to know what weeding effect can be generated by the compound use of the two herbicides. Therefore, the weeding composition with high safety and broad weed control spectrum is provided with important significance.
Disclosure of Invention
In order to solve the problems, the invention provides a weeding composition containing mequindox and propanil, which has good effect of preventing and killing farmland weeds, and particularly has excellent effect of preventing and killing gramineous weeds and broadleaf weeds in paddy fields.
In order to achieve the technical aim, in one aspect, the invention provides a weeding composition containing mequindox and propanil, which comprises the effective components of mequindox and propanil, wherein the mass ratio of the mequindox to the propanil in the weeding composition is 20:1-1:50.
Those skilled in the art readily know that the herbicide composition can improve the efficacy of the compound herbicide composition and avoid the occurrence of drug resistance, and usually adopts a combination of various pesticides or a combination of various pesticides, but whether the weed control effect after the combination of various pesticides or the combination of various pesticides is synergistic or not is difficult to expect due to the ambiguity of the internal mechanism of each component. The inventor has conducted intensive experiments, and determined the control effect of the weeding composition on barnyard grass, a common grass weed, and the control effect of broadleaf weeds, namely, duck tongue grass, in a paddy field through a Growing method, and the compound herbicide composition provided by the invention has excellent control effects on broadleaf weeds, grass weeds and sedge weeds in the paddy field according to comprehensive effect assessment shown by field experiments, and is better than the use effect of a single agent.
Furthermore, in the weeding composition containing the mequindox and the propanil, the mass ratio of the mequindox to the propanil is 5:1-1:10.
Furthermore, in the weeding composition containing the mequindox and the propanil, the mass ratio of the mequindox to the propanil is 1:3.
According to the actual application requirement, the composition can be prepared into one of dosage forms such as aqueous emulsion, suspending agent, wettable powder, water dispersible granule, dispersible oil suspending agent and the like according to a method known by a person skilled in the art. The functional composition also contains an auxiliary agent required for preparing a pesticide preparation, and the auxiliary agent can be one or a mixture of a plurality of solvents, emulsifying agents, wetting agents, stabilizing agents, dispersing agents, thickening agents, pH regulators, defoamers, antifreezing agents, fillers and the like. The adjuvants of the present invention may be known substances, such as various adjuvants commonly used in pesticide preparations, and may be changed according to different situations, and are not particularly limited.
In another aspect, the invention claims the use of a herbicide composition containing mequindox and propanil in farmland weed control, mainly for controlling weeds in paddy fields. As described above, the herbicidal composition has an excellent herbicidal effect in a suitable dosage ratio range, and is useful for controlling grassy weeds, broadleaf weeds, sedge weeds and the like.
Compared with the prior art, the technical scheme provided by the invention has at least the following beneficial effects or advantages:
the weeding composition taking the mequindox and the propanil as the effective components provided by the invention has better weeding effect on field weeds compared with a single dose. The dispersible oil suspending agent of the mequindox and the propanil prepared by the invention has excellent control effect on grassy weeds such as barnyard grass and moleplant seeds of paddy fields and broadleaf weeds such as glossoside, and has synergistic effect. Can effectively reduce the application amount of herbicide and slow down the generation of drug resistance of weeds.
Detailed Description
The following describes the technical aspects of the present invention with reference to examples, but the present invention is not limited to the following examples. The experimental methods and the detection methods in each embodiment are conventional methods unless otherwise specified; the reagents and materials are commercially available unless otherwise specified.
Example 1
This example provides the preparation of 40% mequindox and propanil dispersible oil suspension.
The dispersible oil suspending agent comprises, by mass, 10 parts of mequindox (purchased from Liaoning Miao national institute of agricultural science Co., ltd.), 30 parts of propanil (purchased from Shanghai chemical industry Co., ltd.), 5 parts of calcium dodecyl benzene sulfonate, 5 parts of phenethyl phenylpropyl phenol polyoxyethylene ether, 0.5 part of citric acid, 1 part of white carbon black, 20 parts of soybean oil and the balance of methyl oleate per 100 parts of mequindox and propanil dispersible oil suspending agent.
Weighing the components according to the parts by mass, adding the mequindox, the propanil, the calcium dodecyl benzene sulfonate, the phenethyl phenylpropyl phenol polyoxyethylene ether and the white carbon black into a grinding kettle, grinding until the fineness (D98) reaches about 5 mu m, transferring the materials into the stirring kettle, adding the rest citric acid, the soybean oil and the methyl oleate, and fully and uniformly mixing to obtain the 40% dispersible oil suspending agent of the mequindox and the propanil.
Example 2
The present example provides an indoor combined action measurement of a herbicidal composition containing mequindox and propanil as active ingredients on grassy weeds such as propanil, comprising the following steps:
the preparation method of the dispersible oil suspension agent of the mequindox and the propanil is referred to in example 1, and the mass ratio of the active ingredients is as follows.
The test involved 21 treatments in total, test 1: the mass ratio of the mequindox to the propanil is 20:1; test 2: the mass ratio of the mequindox to the propanil is 10:1; test 3: the mass ratio of the mequindox to the propanil is 5:1; test 4: the mass ratio of the mequindox to the propanil is 1:1; test 5: the mass ratio of the mequindox to the propanil is 1:3; test 6: the mass ratio of the mequindox to the propanil is 1:5; test 7: the mass ratio of the mequindox to the propanil is 1:10; test 8: the mass ratio of the mequindox to the propanil is 1:30; test 9: the mass ratio of the mequindox to the propanil is 1:50; test 10 to 16: application of mequindox only; test 17-22: applying propanil only; test 23: no herbicide was applied and the control group was blank.
Quantitative barnyard grass seeds are respectively sown in planting pots (the upper caliber of the standard is 120mm, the bottom diameter of the standard is 85mm, the height of the standard is 150mm, loam is filled in the planting pots for 10 cm), 20 seeds are sown in each pot, the pot is placed under the conditions of constant temperature and humidity (25-27 ℃ and relative humidity of 60-65%), the pot is cultured, when weeds are in 4-leaf stage, the test agent is diluted by 150 times by adding water and then sprayed, and each treatment of 20 plants is repeated for three times. After the spraying treatment, the culture is continued in the greenhouse, and the weed control effect of each treatment is observed regularly. Fresh weights of the aerial parts of the treated weeds were measured at 25d, and the fresh weight inhibition ratios and the theoretical fresh weight inhibition ratio were calculated, and the measurement results are shown in Table 1.
Fresh weight inhibition rate e= (fresh weight of control group survival weed-fresh weight of test group survival weed)/(fresh weight of control group survival weed x 100)
Theoretical fresh weight inhibition rate E 0 ＝X+Y(100-X)/100
In the formula, X represents the weed control effect of herbicide mequindox when the dosage is P; y represents the weed control effect of herbicide propanil when the dosage is Q; e (E) 0 The theoretical prevention effect of the compound herbicide composition when the herbicide dosage is (P+Q) is shown. E represents the actual control effect of the compound herbicide composition when the herbicide dosage is (P+Q), when E-E 0 A value greater than 0 is a synergistic effect, when E-E 0 A value equal to 0 is additive.
Table 1: herbicidal composition containing mequindox (A) and propanil (B) for preventing and killing barnyard grass
As shown in Table 1, the mass ratio of the active components of the weeding composition containing the mequindox and the propanil is 20:1-1:50, and the difference between the measured control effect and the theoretical control effect is greater than 0, so that the weeding composition has a synergistic effect on the control effect of grassy weeds and the propanil. Preferably, the mass ratio of the active components of the mequindox to the propanil is 5:1-1:10, the actual control effect and the theoretical control effect are both more than 10, and the synergistic effect is stable. Preferably, the mass ratio of the active components of the mequindox to the propanil is 1:3, the maximum difference between the actual control effect and the theoretical control effect is 18.0, and the synergistic effect is optimal.
Example 3
The embodiment provides an indoor combined action measurement of a weeding composition taking mequindox and propanil as active ingredients on broadleaf weeds, namely, glossoside, and specifically comprises the following steps of:
the method for measuring the combined action in the room of this embodiment is the same as that of embodiment 2, and differs in that: the weed seed type is herba Angustifoliae. The measurement results are shown in Table 2.
Table 2: herbicidal composition containing mequindox (A) and propanil (B) for preventing and killing off glossoside
As shown in Table 2, the mass ratio of the active components of the weeding composition containing the mequindox and the propanil is 20:1-1:50, and the difference between the measured control effect and the theoretical control effect is greater than 0, so that the combined use of the two active substances has a synergistic effect on the control effect of broadleaf weeds, namely the glossoside. Preferably, the mass ratio of the active components of the mequindox to the propanil is 5:1-1:10, the actual control effect and the theoretical control effect have large differences, both are larger than 10, and the synergistic effect is stable. Preferably, the mass ratio of the active components of the mequindox to the propanil is 1:3, the maximum difference between the actual control effect and the theoretical control effect is 15.8, and the synergistic effect is optimal.
Example 4
The present example provides a study of the control effect of a herbicidal composition containing mequindox and propanil as active ingredients on grassy weeds, broadleaf weeds and shake weeds in direct-seeding paddy fields.
The test site is selected in Chongming beach paddy field, the soil fertility is moderate, the topography is flat, the irrigation and drainage are convenient, the main weeds in the field are barnyard grass, glossoside, rice plump grass, heterogenous sedge, glossoside, gynura segetum and the like, the rice variety is south japonica 9108, and the rice plant height is about 60cm before the weeding composition is applied.
In the embodiment, the adopted medicines are mequindox and propanil dispersible oil suspending agent, the preparation method refers to the embodiment 1, and the prepared test medicine is diluted by 150 times by water and then sprayed.
And in the 4-6 leaf period of weeds, spraying the medicament by using a knapsack sprayer, rehydrating for 3-5 cm after the medicament is applied, retaining water for 4-5 d, and then managing according to a normal water layer. 30m per processing cell 2 Each treatment was repeated 3 times. The growth of weeds is investigated at 28d after application, 5 points are selected according to Z shape in each district, and 1m is selected for each point 2 Checking the types of weeds and the number of residual plants in the sample points, and calculating the plant prevention effect. Leaf color, leaf shape and growth of rice were observed at irregular intervals after application to clarify the safety of herbicide to rice, and the data record of the results is shown in table 3.
The plant control effect calculating method comprises the following steps:
table 3: herbicidal composition containing mequindox (A) and propanil (B) for preventing and killing weeds in direct-seeding paddy fields
From Table 3, it is clear that the weeding composition containing the mequindox and the propanil has the effective components of the mequindox and the propanil in a mass ratio of 20:1-1:50, has good control effects on gramineous weeds, broadleaf weeds and shake weeds, and has remarkable control effects on the gramineous weeds. The dispersible oil suspending agent is prepared by mixing the mequindox and the propanil, and has good control effect on gramineous weeds, broadleaf weeds and shake weeds. The control effect is obviously better than the effect of single dosage of the mequindox and the propanil, which indicates that the compound use of the mequindox and the propanil has the synergistic effect.
As described above, the basic principles, main features and advantages of the present invention are better described. The above examples and description are merely illustrative of preferred embodiments of the present invention, and the present invention is not limited to the above examples, and various changes and modifications to the technical solution of the present invention by those skilled in the art should fall within the scope of protection defined by the present invention without departing from the spirit and scope of the present invention.
Claims (5)
1. The weeding composition containing the mequindox and the propanil is characterized in that the active ingredients consist of the mequindox and the propanil, and the ratio of the mequindox to the propanil is 20:1-1:50 in terms of mass ratio.
2. The weeding composition containing mequindox and propanil according to claim 1, wherein the ratio of the mequindox to the propanil is 5:1-1:10 in terms of mass ratio.
3. The herbicide composition containing mequindox and propanil according to claim 1, wherein the ratio of the mequindox to the propanil is 1:3 in terms of mass ratio.
4. Use of the herbicide composition containing mequindox and propanil according to any one of claims 1 to 3 for controlling weeds in paddy rice.
5. The use according to claim 4, wherein the weeds are grasses, broadleaf weeds or sedge weeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310972456.3A CN117016555A (en) | 2023-08-03 | 2023-08-03 | Weeding composition containing mequindox and propanil and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310972456.3A CN117016555A (en) | 2023-08-03 | 2023-08-03 | Weeding composition containing mequindox and propanil and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117016555A true CN117016555A (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310972456.3A Pending CN117016555A (en) | 2023-08-03 | 2023-08-03 | Weeding composition containing mequindox and propanil and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117016555A (en) |
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2023
- 2023-08-03 CN CN202310972456.3A patent/CN117016555A/en active Pending
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