CN112931511A - Method for closing weeds in wheat field - Google Patents

Method for closing weeds in wheat field Download PDF

Info

Publication number
CN112931511A
CN112931511A CN202110167254.2A CN202110167254A CN112931511A CN 112931511 A CN112931511 A CN 112931511A CN 202110167254 A CN202110167254 A CN 202110167254A CN 112931511 A CN112931511 A CN 112931511A
Authority
CN
China
Prior art keywords
component
wheat
weeds
herbicide
parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110167254.2A
Other languages
Chinese (zh)
Inventor
梅凤月
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qiaochang Modern Agriculture Co ltd
Original Assignee
Qiaochang Modern Agriculture Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qiaochang Modern Agriculture Co ltd filed Critical Qiaochang Modern Agriculture Co ltd
Priority to CN202110167254.2A priority Critical patent/CN112931511A/en
Publication of CN112931511A publication Critical patent/CN112931511A/en
Pending legal-status Critical Current

Links

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
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
    • A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G13/00—Protecting plants
    • 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
    • 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
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
    • A01N43/66—1,3,5-Triazines, not hydrogenated and not substituted at the ring nitrogen atoms
    • A01N43/68—1,3,5-Triazines, not hydrogenated and not substituted at the ring nitrogen atoms with two or three nitrogen atoms directly attached to ring carbon atoms
    • A01N43/70—Diamino—1,3,5—triazines with only one oxygen, sulfur or halogen atom or only one cyano, thiocyano (—SCN), cyanato (—OCN) or azido (—N3) group directly attached to a ring carbon atom

Abstract

The invention belongs to the technical field of herbicide agriculture, and particularly relates to a method for closing weeds in a wheat field, which adopts the following technical scheme: after wheat is sown (wheat seeds cannot be naked), a wheat field closed herbicide is adopted for soil treatment, and the wheat field herbicide comprises two or three of a component A, a component B and a component C which are used in combination. Wherein the component A comprises diflufenican. Component B comprises pretilachlor. The component C comprises terbutryn. The invention has the beneficial technical effects that: the wheat field closed herbicide has good closed pesticide effect on refractory weeds such as gramineous weeds, broadleaf weeds and the like which are universally existing in wheat fields, is safe to wheat and has no influence on growth, and solves the problem that a good closed herbicide is not available in the wheat fields in the actual production process.

Description

Method for closing weeds in wheat field
Technical Field
The invention relates to the technical field of herbicide agriculture, in particular to a method for closing weeds in a wheat field.
Background
The planting area of wheat in China is about 3 hundred million acres, but the market application medicament for closed weeding of wheat fields is lacked at present. Through the conclusion of years of experiments and tests of Qiao Chang modern agriculture Co Ltd, the compounding scheme is provided.
The diflufenican in the component A belongs to substituted pyridyl anilide herbicides. The variety is a selective contact herbicide and a persistent herbicide, and the action mechanism is that the carotenoid biosynthesis is hindered by inhibiting phytoene dehydrogenase. When the weeds germinate and pass through the pesticide soil layer, the sprouts or root systems can absorb the pesticide, the content of carotenoid in the plants of the weeds which absorb the pesticide is reduced, chlorophyll is damaged, cell membranes are broken, the action speed is high, the weeds are whitened after the use, and finally the whole plants are wilted and die. The death rate is related to the light intensity, the light intensity is high and the light intensity is low.
Pretilachlor in component B is a selective preemergence herbicide, a cell division inhibitor. The weeds absorb the medicament through the mesohypocotyl and the coleoptile, interfere protein synthesis and indirectly influence photosynthesis and respiration of the weeds. On the premise of ensuring the soil moisture content, the fertilizer has good sealing effect on weeds of small-sized seeds, and is mature in the soil sealing process of the paddy field.
The terbutryn in the component C belongs to triazine herbicides and has a systemic conduction effect. Belongs to selective preemergence and postemergence herbicides.
Disclosure of Invention
The invention belongs to the technical field of pesticides, and particularly relates to a compound herbicide containing A, B, C components.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for closing weeds in wheat fields is characterized in that an active ingredient consists of a component A, a component B and a component C, wherein the component A comprises diflufenican. Component B comprises pretilachlor. The component C comprises terbutryn. The active ingredients of the composition comprise 0.1 to 30 weight parts of component A, 1 to 98 weight parts of component B and 1 to 98 weight parts of component C.
Preferably, the method for closing weeds in the wheat field comprises the step of preparing a suspending agent, a water dispersible granule, a dispersible oil suspending agent, a powder, a dry suspension agent and the like from the active ingredients and auxiliary materials.
Preferably, the method for closing the weeds in the wheat field comprises two or three components contained in the wheat field and a compound preparation containing the two or three components.
Compared with the prior art, the technical scheme has the advantages that: the wheat field closed herbicide has good closed pesticide effect on refractory weeds such as gramineous weeds, broadleaf weeds and the like which are universally existing in wheat fields, is safe to wheat and has no influence on growth, and solves the problem that a good closed herbicide is not available in the wheat fields in the actual production process.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to verify that the combination of the three effective components of diflufenican, pretilachlor and terbutryn has good synergistic effect, the applicant firstly performs experiments under the condition of a room-temperature pot culture, measures the weeding effect of the three effective components after mixing in different proportions and evaluates the combined effect. In the experiment, grass weeds such as brome and broadleaf weeds such as descurainia sophia are selected as target weeds.
Diflufenican solution: 30.61g of 98% diflufenican original drug, 5g of emulsifier, 1g of thickener, 0.5g of preservative and the balance of water are accurately weighed. To obtain 30 percent diflufenican suspension solution, and then diluting the diflufenican suspension solution into a certain concentration for later use.
Pretilachlor solution: accurately weighing 52.08g of 96% pretilachlor raw pesticide, adding 10g of emulsifier, supplementing the rest with dimethylbenzene, stirring uniformly to obtain 50% pretilachlor emulsifiable solution, and diluting to a certain concentration for later use.
Terbutryn solution: 51.02g of 98% terbutryn active compound, 5g of emulsifier, 1g of thickener, 0.5g of preservative and the balance of water are accurately weighed. To obtain 50% terbutryn suspending agent solution, and diluting to a certain concentration for later use.
Blank control solution: 10g of emulsifier, 1g of thickener, 0.1g of preservative and 100g of dimethylbenzene.
The test method is as follows: the sealing activity of the mixed pesticide on sparrow wheat and descurainia sophia is tested by a Colby method, quantitative soil is filled in a plastic pot with the height of 15cm and the diameter of 50cm x 19cm, 50 seeds of the tested weeds are uniformly sown in the plastic pot, fine sand soil with the thickness of 0.5-1cm is covered, the prepared raw pesticide solution is compounded and diluted into pesticide liquid with a certain concentration gradient, 1ml of pesticide liquid is sprayed in each pot, 4 treatments are repeated, and a blank solution is used as a control. The treated test material is placed in the sunlight at room temperature (about 7 ℃) for cultivation, the emergence of the weeds is observed periodically, the emergence of the target weeds is observed visually after 45 days, the fresh weight of the plants is weighed, and the fresh weight inhibition ratio (%) is calculated.
The action evaluation method is used for evaluating the combined action mode of the herbicides according to a Colby method, and the formula is as follows:
e is the fresh weight of weeds in the treated area multiplied by 100/the fresh weight of weeds in the control area … … … … … … … … … … (1)
The Colby method calculation formula:
E0＝X*Y*Z/10000
x is the survival rate of the weed of the herbicide A when the dosage is P;
y-the survival rate of the weeds when the herbicide B is used at the dosage of Q;
z-the survival rate of weeds when the dosage is W;
e0-theoretical weed survival rate of herbicide (A + B + C) at the dosage of (P + Q + W);
when the E-E0 is between-10 and 10, the addition effect is obtained, when the E-E0< -10, the synergy effect is obtained, and when the E-E0>10, the antagonism effect is obtained.
Figure BDA0002935684530000031
Figure BDA0002935684530000041
Figure BDA0002935684530000051
As can be seen from the table above, the three active ingredients are compounded, and E-E0 is less than-10, so that the compound pesticide has good synergistic effect on the control effects of brome and descurainia sophia.
According to the above biological test experimental data, the diflufenican, the pretilachlor and the terbutryn are compounded, so that the synergistic effect is very good compared with the effect of using a single medicament, and the herbicide has a very good sealing effect on common gramineous and broadleaf weeds in wheat fields.
The present invention will be described in further detail below with reference to specific examples, but the present invention is by no means limited to these examples. The percentages in the formula are weight percentages, and the used raw medicines and the auxiliary agents are purchased by other manufacturers. Examples of formulations are as follows:
Figure BDA0002935684530000052
example 1
The compound herbicide for the wheat field comprises the following effective components in parts by weight: 5 parts of diflufenican, 5 parts of emulsifier, 1 part of thickener, 0.5 part of preservative and the balance of water.
Example 2
The compound herbicide for the wheat field comprises the following effective components in parts by weight: 40 parts of pretilachlor, 10 parts of emulsifier and the balance of dimethylbenzene.
Example 3
The compound herbicide for the wheat field comprises the following effective components in parts by weight: 50 parts of terbutryn, 5 parts of emulsifier, 1 part of thickener, 0.5 part of preservative and the balance of water.
Example 4
The compound herbicide for the wheat field comprises the following effective components in parts by weight: 5 parts of diflufenican, 40 parts of pretilachlor, 10 parts of emulsifier, 1 part of thickener, 0.5 part of preservative and the balance of water.
Example 5
The compound herbicide for the wheat field comprises the following effective components in parts by weight: 20 parts of pretilachlor and 25 parts of terbutryn, wherein the herbicide is a suspending agent, and further comprises 10 parts of emulsifier, 1 part of thickener, 0.5 part of preservative, and the balance of water.
Example 6
The compound herbicide for the wheat field comprises the following effective components in parts by weight: 5 parts of diflufenican, 50 parts of terbutryn, 5g of emulsifier, 1g of thickening agent, 0.5g of preservative and the balance of water
Example 7
The compound herbicide for the wheat field comprises the following effective components in parts by weight: 2.5 parts of diflufenican, 20 parts of pretilachlor and 25 parts of terbutryn, wherein the herbicide is a suspension emulsion, and also comprises 10 parts of emulsifier, 1 part of thickener, 0.5 part of preservative and the balance of water.
Example 8
The compound herbicide for the wheat field comprises the following effective components in parts by weight: the herbicide consists of diflufenican 20 parts, pretilachlor 40 parts and terbutryn 1 part, and the herbicide is a suspension emulsion, and also comprises emulsifier 10 parts, thickener 1 part, preservative 0.5 part, and the balance of water.
Example 9
The compound herbicide for the wheat field comprises the following effective components in parts by weight: 2.5 parts of diflufenican, 0.5 part of pretilachlor and 50 parts of terbutryn, wherein the herbicide is a suspension emulsion, and also comprises 10 parts of emulsifier, 1 part of thickener, 0.5 part of preservative and the balance of water.
Example 10
The compound herbicide for the wheat field comprises the following effective components in parts by weight: the herbicide consists of diflufenican 0.25 parts, pretilachlor 20 parts and terbutryn 25 parts, and the herbicide is a suspension emulsion, and also comprises emulsifier 10 parts, thickener 1 part, preservative 0.5 part, and the balance of water.
The above examples were selected to perform a field efficacy experiment for controlling weeds in wheat fields to verify the effect of the formulation for controlling annual grassy weeds and broadleaf weeds in wheat fields, and simultaneously the synergistic effect after compounding was determined by comparing with diflufenican, pretilachlor and terbutryn single dose, and the specific implementation was as follows:
experiment: 47.5 percent diflufenican pretilachlor terbutryn suspending agent and different medicaments for controlling weeds in wheat fields. The test site is Binzhou city, Shandong province, the time is 10 months and 7 days after 2020, the field wheat is sown and covered with soil and then is uniformly applied with the test agent, the test agent is prepared according to the above example, 5% diflufenican suspending agent, 50% pretilachlor emulsifiable concentrate and 50% terbutryn suspending agent are compared, ten treatments are carried out in the test, each treatment is carried out in three times, the cells are randomly arranged, and the area of each cell is 60m & lt 2 & gt. Spraying stem and leaf once, and observing the plant control effect of each medicament 15 days and 30 days after the medicament is applied. Recording weather data of a week, which is as follows:
weather data during the test.
Figure BDA0002935684530000071
The investigation objects are field descurainia sophia and brome, and visual test medicaments have no obvious influence on field wheat seedling emergence. The control effect is calculated according to the following formula:
Figure BDA0002935684530000072
the test results are given in the following table:
the drug effect test of 47.5 percent diflufenican pretilachlor terbutaline suspension emulsion and different drugs for closing weeds in wheat fields comprises the following steps:
Figure BDA0002935684530000073
Figure BDA0002935684530000081
from the data, it can be obviously seen that after diflufenican, pretilachlor and terbutryn are compounded in a ternary way, the control rate of a single agent and a binary way is obviously improved, meanwhile, the control effect of all ternary compounding examples on brome and descurainia is over 90%, when the dosage of active ingredients of diflufenican reaches 5 g/mu, the dosage of active ingredients of pretilachlor reaches 40 g/mu, and the control effect of terbutryn reaches 50 g/mu is over 93%, compared with three single agents, the compound preparation has much higher control effect on two weeds, the synergistic effect is obvious, and meanwhile, the control effect of the compound preparation in 30 days is improved to a certain extent compared with the control effect in 15 days, and the duration of the compound preparation is prolonged.
In conclusion, after the diflufenican, the pretilachlor and the terbutryn are compounded, the synergistic effect is very obvious, the sealing effect on the gramineous weeds and the broadleaf weeds is obvious, the weeding spectrum is expanded, the duration is prolonged, the pesticide cost of farmers is reduced, and the economic benefit is improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (3)

1. A method of closing weeds in a wheat field, comprising: the active ingredient consists of a component A, a component B and a component C, wherein the component A comprises diflufenican. Component B comprises pretilachlor. The component C comprises terbutryn. The active ingredients of the composition comprise 0.1 to 30 weight parts of component A, 1 to 98 weight parts of component B and 1 to 98 weight parts of component C.
2. The method of claim 1, wherein the method comprises the steps of: the active ingredients and the auxiliary materials are prepared into suspending agents, water dispersible granules, dispersible oil suspending agents, powder agents, dry suspending agents and the like.
3. The method for closing weeds in wheat fields according to claim 1, which comprises two or three components contained therein, and a compounded preparation containing the two or three components.
CN202110167254.2A 2021-02-05 2021-02-05 Method for closing weeds in wheat field Pending CN112931511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110167254.2A CN112931511A (en) 2021-02-05 2021-02-05 Method for closing weeds in wheat field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110167254.2A CN112931511A (en) 2021-02-05 2021-02-05 Method for closing weeds in wheat field

Publications (1)

Publication Number Publication Date
CN112931511A true CN112931511A (en) 2021-06-11

Family

ID=76243121

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110167254.2A Pending CN112931511A (en) 2021-02-05 2021-02-05 Method for closing weeds in wheat field

Country Status (1)

Country Link
CN (1) CN112931511A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102326559A (en) * 2011-07-14 2012-01-25 陕西美邦农药有限公司 Weeding composition containing diflufenican and triazines
CN106561659A (en) * 2016-10-18 2017-04-19 江苏辉丰农化股份有限公司 Herbicidal composition containing active ingredients diflufenican and pretilachlor
CN111264537A (en) * 2020-04-13 2020-06-12 辽宁海佳农化有限公司 Terbutryn-containing weeding composition

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102326559A (en) * 2011-07-14 2012-01-25 陕西美邦农药有限公司 Weeding composition containing diflufenican and triazines
CN106561659A (en) * 2016-10-18 2017-04-19 江苏辉丰农化股份有限公司 Herbicidal composition containing active ingredients diflufenican and pretilachlor
CN111264537A (en) * 2020-04-13 2020-06-12 辽宁海佳农化有限公司 Terbutryn-containing weeding composition

Similar Documents

Publication Publication Date Title
CN103314971A (en) Weeding composition
CN111296455A (en) Compound herbicide
CN106879608A (en) Herbicidal combinations containing benzobicylon, pretilachlor and penoxsuam
CN112931511A (en) Method for closing weeds in wheat field
CN105454258B (en) A kind of Pesticidal combination and its application containing rhamnolipid and matrine
CN112314610A (en) Weeding composition containing metamifop, halosulfuron-methyl and butachlor
RU2584434C2 (en) Herbicidal composition and method of obtaining efficiency of herbicide effect based on glyphosate
CN103371176A (en) Glufosinate-ammonium-containing pesticide composition
CN101204154A (en) Compound herbicide
CN112088890A (en) Weeding composition containing oxaziclomefone, bensulfuron methyl and penoxsulam
CN112753702A (en) Weeding composition containing oxaziclomefone, clomazone and pyrazosulfuron-ethyl
CN107212011B (en) A kind of bactericidal composition for preventing and treating crop disease
CN106472547B (en) A kind of composition pesticide containing chlorobenzene ether amide and Prochloraz
CN113661990B (en) Weeding composition containing benzobicyclon and propanil and application thereof
CN112970766B (en) Weeding composition containing isoxaflutole and mesosulfuron
CN113575600B (en) Weeding composition containing topramezone and propanil and application thereof
CN113016816B (en) Weeding composition containing isoxaflutole and metosulam
CN111466388A (en) Compound herbicide for green Chinese onion fields
CN110235893B (en) Safeners for protecting cereal crops and their use
CN108812677A (en) A kind of composition pesticide of second containing pheno mycin and lentinan
CN109699665B (en) Seed coating agent containing captan and application thereof
CN106689173A (en) Wheatland post-seedling compound weed killer containing thiencarbazone-methyl and clopyralid
CN107347901B (en) Compound herbicide used after wheat field seedling emergence
CN111296468A (en) Compound herbicide
CN105454270B (en) Pesticide composition

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210611