CN107751203A - A kind of method for preventing and treating rice sheath blight disease - Google Patents
A kind of method for preventing and treating rice sheath blight disease Download PDFInfo
- Publication number
- CN107751203A CN107751203A CN201711082035.4A CN201711082035A CN107751203A CN 107751203 A CN107751203 A CN 107751203A CN 201711082035 A CN201711082035 A CN 201711082035A CN 107751203 A CN107751203 A CN 107751203A
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- CN
- China
- Prior art keywords
- fluopyram
- lentinan
- preventing
- sheath blight
- rice sheath
- 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.)
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- 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
- 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
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/16—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with oxygen as the ring hetero atom
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- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The present invention relates to a kind of method for preventing and treating rice sheath blight disease, and pesticidal preparations of the active component for fluopyram and lentinan are mixed, are uniformly sprayed on after being watered on rice plant, is defined by stem piece moistening；Described fluopyram and the weight ratio of lentinan are 5 25:1.Synergistic of the present invention is notable, can greatly improve drug effect, can reduce effective ingredient consumption, so as to reduce harmful effect and the residues of pesticides to environment, is advantageous to the drug-fast improvement of germ.
Description
Technical field
The present invention relates to agriculture applied technology field, specifically a kind of method for preventing and treating rice sheath blight disease.
Background technology
In recent years, the Scientific Usage of Drugs due to single drug and not, many diseases are caused to generate currently used agricultural chemicals anti-
Property, such as rice blast, turn into a great problem of chemical prevention.Therefore, it is badly in need of a kind of energy effectively preventing rice sheath blight disease
Method, it can effectively control disease and be advantageous to the resistance management of germ.
Fluopyram, English name：Fluopyram, it is the new pyridine base ethyl benzamide of Beyer Co., Ltd's exploitation
Series bactericidal agent, nematicide, act on mitochondrial respiratory chain, suppress the activity of succinate dehydrogenase (complexⅱ) so as to block
Electron transmission, cause the energy requirement that body tissue can not be provided, and then kill controlling object or suppress it and grow.Fluorine pyrrole
Bacterium acid amides is the efficient medicament for preventing and treating powdery mildew, sclerotiniose etc., but cost height is used alone and has the risk for producing resistance.
Lentinan, English are general entitled：Fungous proteoglycan, it is a kind of polysaccharide with induction of resistance
Compound.Lentinan is applied to field of medicaments earliest, to improve body immunity, but in agriculture field similarly with good
Good disease-resistant, bacteriostatic activity, plant can be induced to produce and accumulate the disease resistance materials such as salicylic acid, protective plant protecting agent and chitinase.
There are some researches show lentinan can not only induce crop to produce good induction of resistance to disease, also to phytopathogen
With certain inhibitory action, and improve the anti-adversity ability of crop.
It is the common methods for preventing and treating agriculture resistance disease using the mixture of different pesticide species in agricultural production.Pass through
Formulation of pesticide is screened, and synergistic effect is significantly formulated, and can effectively improve actual prevention effect, is reduced dosage, is delayed disease to resist
Sexual development, it is the important means of the disease comprehensive regulation
At present, using fluopyram and lentinan as the composition of active ingredient, the research applied to rice sheath blight disease
It there are no the report of correlation.
The content of the invention
The technical problem to be solved by the invention is to provide a kind of synergy significantly, high-efficiency low-toxicity, mu cost is low, favorably
In a kind of method of preventing and treating rice sheath blight disease of the germ comprehensive regulation.
The technical solution used in the present invention is：A kind of method for preventing and treating rice sheath blight disease, is fluorine pyrrole bacterium by active component
The pesticidal preparations of acid amides and lentinan mix, and are uniformly sprayed on after being watered on rice plant, are defined by stem piece moistening；Institute
The fluopyram and the weight ratio of lentinan stated are 5-25:1, it is preferred that fluopyram and the weight of lentinan ratio
8:1。
Described pesticidal preparations, the percentage by weight of fluopyram is 4-20%, and the percentage by weight of lentinan is
0.2-1.0%.
The method that described pesticidal preparations are known to the skilled person is prepared into suspending agent.
The advantages and positive effects of the present invention are：The active ingredient mechanism of action of preparation prepared by this method is different,
It is obvious for preventing and treating rice sheath blight disease Synergistic with certain weight than mixture, drug effect can be greatly improved, reduces active ingredient
Dosage, so as to reduce harmful effect and the residues of pesticides to environment, be advantageous to the drug-fast improvement of germ.
Embodiment
Technical scheme and technique effect are described further below by way of specific embodiment, institute of the present invention
The percentage stated is weight percentage.
First, embodiment is prepared
Embodiment 1：4.5% fluopyram lentinan suspending agent
Formula：Fluopyram 4.0%, the lentinan 0.5%, (wetting of alkyl naphthyl sulfonate 2.5% are weighed according to quantity
Agent), polycarboxylate 4.5% (dispersant), xanthans 0.5% (thickener), ethylene glycol 2% (antifreezing agent), silicone oil 0.2% (disappears
Infusion), deionized water is mended to 100%.
Embodiment 2：21% fluopyram lentinan suspending agent
Formula：Fluopyram 20%, the lentinan 1.0%, (wetting of neopelex 3.5% are weighed according to quantity
Agent), polycarboxylate 3.2% (dispersant), xanthans 0.2% (thickener), propane diols 2.5% (antifreezing agent), silicone oil 0.5%
(defoamer), deionized water are mended to 100%.
Embodiment 3：5.2% fluopyram lentinan suspending agent
Formula：Fluopyram 5.0%, the lentinan 0.2%, (wetting of neopelex 3.5% are weighed according to quantity
Agent), polycarboxylate 3.2% (dispersant), xanthans 0.5% (thickener), ethylene glycol 2% (antifreezing agent), silicone oil 0.2% (disappears
Infusion), deionized water is mended to 100%.
Embodiment 4：10.5% fluopyram lentinan suspending agent
Weigh according to quantity fluopyram 10.0%, lentinan 0.5%, neopelex 3.0% (wetting agent),
Alkyl benzene sulfonate calcium salt 3.5% (dispersant), xanthans 0.5% (thickener), ethylene glycol 2.5% (antifreezing agent), 0.2% silicone oil
(defoamer), deionized water are mended to 100%.
Embodiment 1-4 preparation method is：After above-mentioned raw materials are mixed by formula rate, mixed by high speed shear equal
It is even, ball milling 2~3 hours in ball mill, make diameter of particle all below 5 μm, you can suspending agent of the present invention is made
Product.
2nd, Application Example
Embodiment 1:The Toxicity Determination of fluopyram and lentinan mixture to the sheath and culm blight of rice
After prerun determines the effective inhibition concentration scope of each medicament, each medicament is diluted by active constituent content gradient series
5 concentration, if clear water compares.Reference《Farm-chemical indoor determination test rule bactericide》, using mycelial growth rate method.Will
Rice sheath blight disease germ after secondary separation culture is standby in blade edge punching with a diameter of 0.5CM aseptic card punch,
Then moving on the PDA plate culture medium of drug containing, being placed in culture in 25 ± 1 DEG C of incubators, culture measures colony diameter after 6 days,
Each 6 repetitions of processing.Measured result calculates mycelial growth inhibition rate compared with blank control.
Mycelial growth inhibition rate is converted into probit value (y), liquor strength (μ g/mL) is converted into logarithm value (x), with minimum
Square law tries to achieve virulence regression equation (y=a+bx), and thus calculates the EC of every kind of medicament50Value.
The synergistic effect of pharmacy mix is evaluated according to the co-toxicity coefficient method (CTC) of the abundant methods of Sun Yun, i.e. CTC≤80 are antagonism
Effect, 80<CTC<120 be summation action, and CTC >=120 are synergistic effect, and statistical result is as shown in table 1.
The Toxicity Determination table of the fluopyram of table 1, lentinan and its mixture to rice sheath blight disease
| Reagent agent | Proportioning | EC50(mg/L) | Survey toxicity index | Theoretical toxicity index | Co-toxicity coefficient (CTC) |
| Fluopyram (A) | / | 2.35 | 145.87 | / | / |
| Lentinan (B) | / | 3.42 | 100.00 | / | / |
| A：B | 2:1 | 3.40 | 100.82 | 130.58 | 77.2 |
| A：B | 5:1 | 1.87 | 183.15 | 138.22 | 132.5 |
| A：B | 8:1 | 1.30 | 263.86 | 140.77 | 187.4 |
| A：B | 10:1 | 1.59 | 215.85 | 141.70 | 152.3 |
| A：B | 15:1 | 1.46 | 234.51 | 143.00 | 164.0 |
| A：B | 20:1 | 1.86 | 184.29 | 143.69 | 128.3 |
| A：B | 25:1 | 1.93 | 177.61 | 144.11 | 123.3 |
| A：B | 40:1 | 2.04 | 168.08 | 144.75 | 116.1 |
Measurement result shows, when fluopyram and the weight of lentinan ratio are 5-25:When 1, co-toxicity coefficient (CTC) is big
In 120, when fluopyram and the weight of lentinan are 8:When 1, co-toxicity coefficient is maximum, is 187.4, and synergy is the most notable,
There is good guiding value in field test.
Embodiment 2:The preparation for preparing the gained of embodiment 1 is used for the field test of rice sheath blight disease
Experiment is with reference to GB/T 17980.19-2000《Pesticide field efficacy medicine test criterion (one) bactericidal agent for preventing and treating rice leaf portion
Disease》
(1) experimental design, to prepare the preparation (4.5% fluopyram lentinan suspending agent) of the gained of embodiment 1
To handle 1#, using 5% fluopyram suspending agent as processing 2#；Using 2% lentinan suspending agent as processing 3#；One is set simultaneously
Individual blank control.
(2) experiment and investigation method：Rice sheath blight disease early stage dispenser, it is watered using 15KG type knapsack sprayers
Even thick water spray, water consumption are 50kg/ mus.Disease index is investigated before medicine, result investigation is carried out respectively within 7 days, 14 days after medicine, calculates
Preventive effect.Result of the test is shown in Table 2.
Table 2：The preparation for preparing the gained of embodiment 1 is used for the field test statistical form of rice sheath blight disease
| Test process | Preparation usage amount (gram/acre) | 7 days preventive effects (%) after medicine | 14 days preventive effects (%) after medicine |
| Handle 1# | 60 | 95.6 | 94.3 |
| Handle 2# | 100 | 81.4 | 78.4 |
| Handle 3# | 210 | 62.4 | 67.2 |
| Blank control | / | / | / |
Result of the test can be seen that：7 days after dispenser, processing 1# is 95.6% to banded sclerotial blight preventive effect, hence it is evident that is better than processing 2#
With processing 3#；14 days after dispenser, processing 1# is 94.3% to banded sclerotial blight preventive effect, also significantly better than processing 2# and processing 3#.Experiment
During each medicament be showed no poisoning generation, to crop safety.
In summary, the present invention uses fluopyram and lentinan science mixture, to the prevention effect of banded sclerotial blight simultaneously
It is not the simple superposition of each component activity, compared with existing unitary agent, synergistic effect is notable, and quick-acting is high, lasting effect length,
Germ resistance development can be delayed, it is good to crop safety, meet the comprehensive regulation of pest and disease damage.
Claims (4)
- A kind of 1. method for preventing and treating rice sheath blight disease, it is characterised in that by active component be fluopyram and lentinan Pesticidal preparations mix, and are uniformly sprayed on after being watered on rice plant, are defined by stem piece moistening；Described fluopyram and The weight ratio of lentinan is 5-25:1.
- 2. according to the method for claim 1, it is characterised in that fluopyram and the weight of lentinan ratio 8:1.
- 3. method according to claim 1 or 2, it is characterised in that the percentage by weight of fluopyram is 4-20%, fragrant The percentage by weight of mushroom polysaccharide is 0.2-1.0%.
- 4. according to the method for claim 1, it is characterised in that described pesticidal preparations are suspending agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711082035.4A CN107751203A (en) | 2017-11-07 | 2017-11-07 | A kind of method for preventing and treating rice sheath blight disease |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711082035.4A CN107751203A (en) | 2017-11-07 | 2017-11-07 | A kind of method for preventing and treating rice sheath blight disease |
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| Publication Number | Publication Date |
|---|---|
| CN107751203A true CN107751203A (en) | 2018-03-06 |
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ID=61273194
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711082035.4A Pending CN107751203A (en) | 2017-11-07 | 2017-11-07 | A kind of method for preventing and treating rice sheath blight disease |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104604863A (en) * | 2012-09-13 | 2015-05-13 | 陕西美邦农药有限公司 | Dimoxystrobin-contained bactericidal composition |
| CN106993623A (en) * | 2017-05-15 | 2017-08-01 | 杨新兰 | A kind of bactericidal composition for being applied to prevent and treat rice sheath blight disease |
-
2017
- 2017-11-07 CN CN201711082035.4A patent/CN107751203A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104604863A (en) * | 2012-09-13 | 2015-05-13 | 陕西美邦农药有限公司 | Dimoxystrobin-contained bactericidal composition |
| CN106993623A (en) * | 2017-05-15 | 2017-08-01 | 杨新兰 | A kind of bactericidal composition for being applied to prevent and treat rice sheath blight disease |
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