background technology
Wheat powdery mildew is a kind of worldwide disease, all has distribution in each main wheat producing countries, and China's Along The Coast of Shandong Province, Sichuan, Guizhou, Yunnan occur general, cause harm and also weigh.In recent years this disease northeastward, North China, northwest Mai Qu, also have the gesture be on the rise.This disease can encroach on each organ of wheat plant overground part, but based on blade and leaf sheath, when morbidity is heavy, grain husk shell and awns also can be injured.
Wheat powdery mildew mainly betides on blade, also can betide on plant leaf sheath, stem stalk and fringe.General leaf front scab is many compared with leaf back, and lower blade is upper blade disease weight comparatively.Surface, disease portion is with the mould layer of layer white powder shape, and white thread mildew appears in sick portion at first, and expand gradually and associating mutually, the mildew larger in oblong, can cover blade large portion time serious, even all, mould layer thickness can reach 2 millimeter, and gradually in powdery.Later stage, mould layer became grey from white gradually, upper raw black particle.Leaf turns yellow in early days, curling withered, and grave illness strain is usually stunt and can not be eared.
Symptom: blade of mainly causing harm, leaf sheath of also can causing harm when being in a bad way, stem stalk and fringe portion.All can occur from seedling to Adult plant.The scab position initial stage grows thread white mildew, and the mould layer of later surface coverage thickeies gradually, and like fine hair shape, color gradually becomes grey by white, is germ conidiophore and conidium.Later stage scattered black point, namely germ sexual enter generation, cleistothecium.
The generation development of wheat powdery mildew and meteorological condition, varietal resistance and cultivation management horizontal relationship close.When temperature 15-20 DEG C, field relative air humidity more than 70% time, rapidly, seriously, and field humidity is greatly then conducive to infecting disease that the large dew of all mists is heavy, early spring, the temperature rises in disease development.Rich water is used too much, and wheat growth is excessively prosperous, and population density is excessive, airtight, and field humidity is large, and plant children is tender, and premunition is low, is also easy to powdery mildew occurs.
1. select disease-resistant high yield kind, effectively can suppress the generation of wheat powdery mildew, the kind of disease resistance should be had at present based on seed selection Adult plant.
2. root out the spontaneous wheat of various occasion after wheat harvest in time, eliminate initial stage source of infection.
3. rational close planting, adopt essence amount semi-accuracy seeding, suitable late sowing, improves plant resistance against diseases.
4. the Rational Application of nitrogenous fertilizer is noted, rational application of fertilizers, in good time row irrigation.
5. carry out chemical control in good time: wheat powdery mildew generally rate reach 10% or disease index reach 5%-8% time, namely should carry out chemical control.Every mu of 15% triadimefon wetting powder 50 grams adds " Tianda-2116 " spirit in strong sprout and is watered 30 kilograms, and spraying in early spring once can basic controlling harm, and can effectively prevention frost damage is double prevents and treats yellow rust and powdery mildew.In the area that morbidity is more, can dress seed by seed weight 0.12% with 15% triadimefon wetting powder, control the rice shoot state of an illness, reduce bacterium amount of surviving the winter, alleviate morbidity, and doublely can control loose kernel smut, if leaching seed dressing type " Tianda-2116 " effect adding identical amount can be better.
The area heavy to long-term morbidity in autumn and wheatland, adopt triadimefon seed dressing, after watering water of turning green spring, in conjunction with herbicide spraying, mu adds triadimefon active ingredient 1 gram to water even spraying, can prevent the generation of powdery mildew, alleviate disease epidemic rate in early spring and intensity.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of bactericidal composition for preventing and treating wheat powdery mildew.
The present invention is realized by following technical scheme for preventing and treating the bactericidal composition of wheat powdery mildew:
The bactericidal composition of control wheat powdery mildew, the active ingredient of this bactericidal composition comprises: volution bacterium amine, zoxamide.
Preferably, above-mentioned volution bacterium amine, the part by weight of zoxamide are 1-5:2-4.
The part by weight of above-mentioned volution bacterium amine, zoxamide is 4:3.
Above-mentioned bactericidal composition also comprises auxiliary agent, and described active ingredient volution bacterium amine, zoxamide account for the 36-58% of total composition.
The bactericidal composition of control wheat powdery mildew, in this bactericidal composition, auxiliary agent is at least one in dispersant, wetting agent, emulsifier, antifreezing agent, defoamer, thickener, disintegrant, stabilizing agent, filler, solvent, and described solvent is organic solvent or water.
Its formulation of above-mentioned bactericidal composition is any one in wetting powder, suspending agent, aqueous emulsion, water dispersible granules and missible oil.
The bactericidal composition of control wheat powdery mildew, this bactericidal composition is aqueous emulsion, the parts by weight of each component are: volution bacterium amine 50, zoxamide 30, and emulsifier 10, organic solvent 40, stabilizing agent 5, antifreezing agent 2, defoamer 1, thickener 1, surplus are water;
The concrete production stage of this aqueous emulsion is: volution bacterium amine, zoxamide, solvent and emulsifier are mixed, and makes it to be dissolved into uniform oil phase; Water, antifreezing agent, stabilizing agent, thickener and defoamer are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., slowly add water until reach phase inversion point, open clipper and carry out high speed shear, shear 20 minutes to 1 hour, form the aqueous emulsion of oil-in-water type, obtain the bactericidal composition of aqueous emulsion.
In the bactericidal composition of control wheat powdery mildew of the present invention, emulsifier is at least one in calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether;
Organic solvent is any one or more mixed solvents formed with arbitrary proportion in dimethylbenzene, biodiesel, toluene, diesel oil, methyl alcohol, ethanol, n-butanol, isopropyl alcohol, turpentine oil, solvent naphtha, dimethyl formamide, dimethyl sulfoxide (DMSO);
Stabilizing agent is at least one in sodium citrate, resorcinol;
At least one in antifreeze glycol, propane diols, glycerine, polyethylene glycol;
Defoamer is silicone oil, silicone compound, C
10-20saturated fat acid compounds, C
8-10at least one in aliphatic alcohols compound;
Thickener is at least one in xanthans, CMC, hydroxyethylcellulose, methylcellulose, Magnesiumaluminumsilicate, polyvinyl alcohol.
Preferably, above-mentioned emulsifier is alkylphenol polyoxyethylene sulfosuccinate;
Solvent is ethanol;
Stabilizing agent is resorcinol;
Antifreezing agent propane diols;
Defoamer is silicone compound;
Thickener is CMC.
The volution bacterium amine mechanism of action and feature: sterol biosynthesis inhibitor, the main synthesis suppressing C-14 demethylation enzyme.
Application: suitable for crop and safety Wheat and barley.Under recommended dose to crop safety, without poisoning.
Controlling object wheat powdery mildew and various rust, barley leaf blotch and stripe disease.The foliage fungicide of interior absorption, effective especially to powdery mildew.Speed of action is fast and the lasting period is long, has protection therapeutic action concurrently, both can be used alone, again can with other fungicide compoundings to expand fungicidal spectrum.
Beneficial effect of the present invention:
(1) present composition effective active composition volution bacterium amine, the mutual mixture of both zoxamides can not produce conflict;
(2) present composition has good synergistic effect within the specific limits, and preventive effect is higher than single dose, and drug effect is more lasting;
(3) delay drug-fast generation, decreased agricultural chemicals Reusability number of times, reduced Pesticide use amount, reduce the use cost of agricultural chemicals;
(4) present composition is to especially having special efficacy to control wheat powdery mildew, also all effective to rust, damping off.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, so that those skilled in the art more understands the present invention, but does not therefore limit the present invention.
Embodiment 1
Bactericidal composition is aqueous emulsion, and the parts by weight of each component are: volution bacterium amine 50, zoxamide 30, and emulsifier 10, solvent 40, stabilizing agent 5, antifreezing agent 2, defoamer 1, thickener 1, surplus are water;
The concrete production stage of this aqueous emulsion is: volution bacterium amine, zoxamide, solvent and emulsifier are mixed, and makes it to be dissolved into uniform oil phase; Water, antifreezing agent, stabilizing agent, thickener and defoamer are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., slowly add water until reach phase inversion point, open clipper and carry out high speed shear, shear 20 minutes to 1 hour, form the aqueous emulsion of oil-in-water type, obtain the bactericidal composition of aqueous emulsion.
For preventing and treating in the bactericidal composition of wheat powdery mildew, emulsifier is at least one in calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether;
Organic solvent is ethanol;
Stabilizing agent is resorcinol;
Antifreezing agent propane diols;
Defoamer is silicone compound;
Thickener is CMC.
Above-mentioned medicine reaches 94.5% for the anti-efficiency of wheat powdery mildew.
Comparative example 1
Bactericidal composition is aqueous emulsion, and the parts by weight of each component are: volution bacterium amine 80, and emulsifier 10, solvent 40, stabilizing agent 5, antifreezing agent 2, defoamer 1, thickener 1, surplus are water;
The concrete production stage of this aqueous emulsion is: volution bacterium amine, zoxamide, solvent and emulsifier are mixed, and makes it to be dissolved into uniform oil phase; Water, antifreezing agent, stabilizing agent, thickener and defoamer are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., slowly add water until reach phase inversion point, open clipper and carry out high speed shear, shear 20 minutes to 1 hour, form the aqueous emulsion of oil-in-water type, obtain the bactericidal composition of aqueous emulsion.
For preventing and treating in the bactericidal composition of wheat powdery mildew, emulsifier is at least one in calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether;
Organic solvent is ethanol;
Stabilizing agent is resorcinol;
Antifreezing agent propane diols;
Defoamer is silicone compound;
Thickener is CMC.
Above-mentioned medicine reaches 81.7% for the anti-efficiency of wheat powdery mildew.
Comparative example 2
Bactericidal composition is aqueous emulsion, and the parts by weight of each component are: zoxamide 80, and emulsifier 10, solvent 40, stabilizing agent 5, antifreezing agent 2, defoamer 1, thickener 1, surplus are water;
The concrete production stage of this aqueous emulsion is: volution bacterium amine, zoxamide, solvent and emulsifier are mixed, and makes it to be dissolved into uniform oil phase; Water, antifreezing agent, stabilizing agent, thickener and defoamer are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., slowly add water until reach phase inversion point, open clipper and carry out high speed shear, shear 20 minutes to 1 hour, form the aqueous emulsion of oil-in-water type, obtain the bactericidal composition of aqueous emulsion.
For preventing and treating in the bactericidal composition of wheat powdery mildew, emulsifier is at least one in calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether;
Organic solvent is ethanol;
Stabilizing agent is resorcinol;
Antifreezing agent propane diols;
Defoamer is silicone compound;
Thickener is CMC.
Above-mentioned medicine reaches 80.5% for the anti-efficiency of wheat powdery mildew.
As can be seen from above contrast, its effect composite of volution bacterium amine and zoxamide is better than single volution bacterium amine or zoxamide.
Embodiment 2
Bactericidal composition is aqueous emulsion, and the parts by weight of each component are: volution bacterium amine 45, zoxamide 35, and emulsifier 10, solvent 40, stabilizing agent 5, antifreezing agent 2, defoamer 1, thickener 1, surplus are water;
The concrete production stage of this aqueous emulsion is: volution bacterium amine, zoxamide, solvent and emulsifier are mixed, and makes it to be dissolved into uniform oil phase; Water, antifreezing agent, stabilizing agent, thickener and defoamer are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., slowly add water until reach phase inversion point, open clipper and carry out high speed shear, shear 20 minutes to 1 hour, form the aqueous emulsion of oil-in-water type, obtain the bactericidal composition of aqueous emulsion.
For preventing and treating in the bactericidal composition of wheat powdery mildew, emulsifier is at least one in calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether;
Organic solvent is dimethylbenzene;
Stabilizing agent is at least one in resorcinol;
Antifreeze glycol;
Defoamer is silicone compound;
Thickener is CMC.
Embodiment 3
Bactericidal composition is aqueous emulsion, and the parts by weight of each component are: volution bacterium amine 50, zoxamide 30, and emulsifier 10, solvent 40, stabilizing agent 5, antifreezing agent 2, defoamer 1, thickener 1, surplus are water;
The concrete production stage of this aqueous emulsion is: volution bacterium amine, zoxamide, solvent and emulsifier are mixed, and makes it to be dissolved into uniform oil phase; Water, antifreezing agent, stabilizing agent, thickener and defoamer are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., slowly add water until reach phase inversion point, open clipper and carry out high speed shear, shear 20 minutes to 1 hour, form the aqueous emulsion of oil-in-water type, obtain the bactericidal composition of aqueous emulsion.
For preventing and treating in the bactericidal composition of wheat powdery mildew, emulsifier is at least one in calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether;
Organic solvent is dimethyl sulfoxide (DMSO);
Stabilizing agent is at least one in resorcinol;
At least one in antifreezing agent polyethylene glycol;
Defoamer is silicone oil;
Thickener is xanthans.
Embodiment 4
Bactericidal composition is aqueous emulsion, and the parts by weight of each component are: volution bacterium amine 55, zoxamide 42, and emulsifier 10, solvent 40, stabilizing agent 5, antifreezing agent 2, defoamer 1, thickener 1, surplus are water;
The concrete production stage of this aqueous emulsion is: volution bacterium amine, zoxamide, solvent and emulsifier are mixed, and makes it to be dissolved into uniform oil phase; Water, antifreezing agent, stabilizing agent, thickener and defoamer are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., slowly add water until reach phase inversion point, open clipper and carry out high speed shear, shear 20 minutes to 1 hour, form the aqueous emulsion of oil-in-water type, obtain the bactericidal composition of aqueous emulsion.
For preventing and treating in the bactericidal composition of wheat powdery mildew, emulsifier is at least one in calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether;
Organic solvent is dimethyl formamide;
Stabilizing agent is resorcinol;
Antifreezing agent glycerine;
Defoamer is silicone oil;
Thickener is CMC.
Embodiment 5
Bactericidal composition is aqueous emulsion, and the parts by weight of each component are: volution bacterium amine 60, zoxamide 30, and emulsifier 10, solvent 40, stabilizing agent 5, antifreezing agent 2, defoamer 1, thickener 1, surplus are water;
The concrete production stage of this aqueous emulsion is: volution bacterium amine, zoxamide, solvent and emulsifier are mixed, and makes it to be dissolved into uniform oil phase; Water, antifreezing agent, stabilizing agent, thickener and defoamer are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., slowly add water until reach phase inversion point, open clipper and carry out high speed shear, shear 20 minutes to 1 hour, form the aqueous emulsion of oil-in-water type, obtain the bactericidal composition of aqueous emulsion.
For preventing and treating in the bactericidal composition of wheat powdery mildew, emulsifier is at least one in calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether;
Organic solvent is turpentine oil;
Stabilizing agent is at least one in resorcinol;
Antifreezing agent propane diols;
Defoamer is silicone compound;
Thickener is hydroxyethylcellulose.