CN109526928A - A kind of Organic cucumber downy mildew preventing control method - Google Patents
A kind of Organic cucumber downy mildew preventing control method Download PDFInfo
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- CN109526928A CN109526928A CN201811394674.9A CN201811394674A CN109526928A CN 109526928 A CN109526928 A CN 109526928A CN 201811394674 A CN201811394674 A CN 201811394674A CN 109526928 A CN109526928 A CN 109526928A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M13/00—Fumigators; Apparatus for distributing gases
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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
- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
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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
- 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
- A01N47/24—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing the groups, or; Thio analogues thereof
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Abstract
The present invention discloses a kind of Organic cucumber downy mildew preventing control method, belongs to agricultural plantation technology field.For application means are single in the existing cucumber downy mildew preventing control method of solution, are easy to produce the problems such as drug resistance, the method that the present invention is combined using physical control and chemical prevention, including morbidity pre-treatment, environmental Kuznets Curves and the processing of downy mildew stadium and etc..The present invention is on the basis of nano cuprous oxide is pretreated, S-Ethyl ethylthio sulfonate and pyraclostrobin equal proportion are dissolved in missible oil (cyclohexanone and lightweight aromatic hydrocarbon solvent naphtha), medical fluid is set preferably to be adhered to blade face, it is impregnated with to plant epidermis, or infiltrate into germ, in disease pest body, greatly strengthen the preventive effect of medicament.The chemical bacteriostatic that a part is replaced using plant-source antibacterial substance, greatly reduces the usage amount of chemical classes pesticide.The present invention is simple to operation, convenient for promoting.
Description
Technical field
The invention belongs to agricultural plantation technology fields, and in particular to a kind of preventing control method of Organic cucumber downy mildew.
Background technique
Cucumber (Cucumisativus) also known as cucumber, king's melon overgrow for Curcurbitaceae Cucumis annual herb and climb plant
Object can all be planted in open country and greenhouse, belong to the vegetables that the four seasons are available for answering.Its main edible part is tender fruit, battalion
It supports and enriches, 97 grams of moisture content in every 100 grams of cucumber, in addition, also containing a small amount of calcium, phosphorus, iron, vitamin etc., it is direct-edible.
Currently, it is that the world is each that cucumber, which is fond of with its yield height, remarkable in economical benefits, majority and is come out at the top, in numerous fruits and vegetables
One of the vegetable crop of state's Main Cultivation.
Due to cucumber within entire breeding time to the more demanding of temperature and humidity, be easy to happen disease pest in actual production
Evil, the especially continuous cropping under greenhouse, this cultivation mode of heliogreenhouse cause pathogen largely to accumulate, it is easier to cause
Pest and disease damage.Cucumber downy mildew is Major Diseases in Organic cucumber production, seriously affects the yield of cucumber, is Organic cucumber production master
Want obstacle.The pathogenic bacteria of cucumber downy mildew are Cuba artificial downy mildew, belong to Mastigomycotina, downy mildew Zoopagales, Pseudo peronospara category, are
A kind of obligate parasite, very big to the threat of cucumber growth, popular wide, spreading trend is higher, on green cucumber, downy mildew
Disease can continuous occurrence injury throughout the year, in winter, germ can continue to cause harm on cucumber plant in the form of sporangium, and germ is invaded
After entering host, by 4-5 days incubation periods, when relative humidity reaches 83% or more, it can produce a large amount of spores on the blade of morbidity
Ascus, sporangium are propagated depending mainly on air-flow, generate great destruction to green cucumber, lead to the cucumber underproduction, and quality reduces.
Cucumber downy mildew in actual production caused by harm it is more serious, be easy to cause irremediable loss, therefore should
The control measure of disease just seems particularly significant.Preventing and treating cucumber downy mildew must be with the plant protection policy of " putting prevention first, integrated control "
For important prerequisite, cooperate may be selected with cultural control first arranges with the cultural control that the farming operations such as apply fertilizer, pour water combine
It applies, creates the environmental condition for being not suitable for its morbidity, can accomplish that primary prevention is fallen ill.Again with bionomic control, nutritional prevention and life
Object prevention and treatment is main supplementary means, but after occurring infection center in cucumber booth, carry out chemical prevention only appropriate, ability
Alleviate and the sprawling of control disease endangers.
However in recent years, the pesticide control of Cucumber Pests And Diseases is mostly some old kinds, and type and application method are single, is easy
It develops drug resistance, and the safety interval of the vegetables such as cucumber is shorter, it is desirable that pesticide control toxicity is lower, along with pesticide variety
Lack, be easy to cause and prevent and treat problem ineffective or that residual is overweight, and chemical pesticide pollution problem is than more serious.In addition, vegetable grower couple
Cucumber Pests And Diseases a situation arises understand it is unclear, it is incomplete to understandings such as the use age of pesticide control, application method, points for attention
Face often leads to be unable to Symptomatic medicine, and blindness is larger, and expenses for prevention and control improves, and the production cost increases.
Summary of the invention
To solve in existing cucumber downy mildew preventing control method, application means are single, are easy to produce the problems such as drug resistance, this hair
The bright method combined using physical control and chemical prevention, and replace the chemistry of a part antibacterial using plant-source antibacterial substance
On the one hand medicine greatly reduces the usage amount of chemical classes pesticide, on the other hand, by the proportion of the two science, to cucumber downy mildew
The prevention and control of disease play better effect.Purpose to realize the present invention, used technical solution is:
A kind of Organic cucumber downy mildew preventing control method, which comprises the following steps:
(1) it morbidity pre-treatment: is scattered in using nano cuprous oxide powder body in the water of 500-800 times of weight, is sprayed on Huang
Melon blade face, per hectare dosage 3-4.5kg, every other day sprinkling is primary, continuous sprinkling 3-5 time, and when sprinkling will uniformly thoughtfully, leaf
It uniformly sprays front and back；The preparation method of the nano cuprous oxide powder body is: by 20m L 0.5mol/L copper-bath and
0.1g polyethylene glycol is added in flask, under magnetic agitation, 0.5mol/L 40m L sodium hydroxide solution is added to above-mentioned molten
In liquid, 50m L 0.1mol/L ascorbic acid solution is added after stirring 30min, continues to stir 30min；Centrifugation point after reaction
From cuprous oxide is obtained, is washed with deionized water and dehydrated alcohol and be placed in baking oven for several times, be dried to obtain nano cuprous oxide
Powder；
(2) environmental Kuznets Curves: after step (1), temperature of shed is controlled after 30-32 DEG C, 3-5 days, controls night room
Temperature is not less than 15 DEG C, and early morning room temperature is not less than 10 DEG C, and ventilation dewetting, reduces humidity to 60-70%；
(3) downy mildew stadium is handled: when there is diseased plant after step (1) and step (2), next step chemical prevention is carried out,
Control method is as follows: after pyraclostrobin and S-Ethyl ethylthio sulfonate equal proportion are mixed, being dissolved in the solvent of double weight, and is added mixed
The emulsifier of solution weight 10-15% and the bleeding agent of mixed solution weight 3-5% are closed, after mixing according to 30-35g/ mus
Dosage carry out foliage-spray, spray altogether twice, be separated by 7-10 days；
The drying temperature of baking oven is 80 DEG C in step (1), and drying time is 2-5 hours.
Solvent described in step (3) is cyclohexanone and lightweight aromatic hydrocarbon solvent naphtha mix according to volume ratio 1:2-4 and
?.
Emulsifier described in step (3) is styrylphenol polyoxyethylene ether and dodecyl sodium sulfonate calcium according to mass ratio
2-3:1 is obtained by mixing.
Bleeding agent described in step (3) is diisooctyl maleate sulfonate.
The spraying time of step (1) and step (3) is 12-15 in afternoon point.
Medicament used herein is commercially available.
The present invention sprays the aqueous solution of the nano cuprous oxide of low concentration in advance before disease occurs to cucumber blade face, plays just
The effect of step prevention.Cuprous oxide forbidden bandwidth is 2.2e V, is a kind of typical Metal-vacancy p-type semiconductor.Because of its uniqueness
Crystal structure, forbidden bandwidth, cuprous oxide have optical property, magnetic performance, catalytic performance, sensing capabilities.Particularly, oxygen
Change it is cuprous also have good bacteriostasis property, can be applicable to the fields such as marine anti-pollution, antibacterial fabric, waste water control.Cu2O receives
Rice grain plays the role of activated centre in the photocatalytic process, activates the oxygen in water and air, and generates very active strong
The hydroxyl radical free radical OH and active oxygen ion O of oxidisability2-, the structure and function of cell membrane is directly or indirectly damaged, is finally led
Cause membranolysis and content leaks.It is generally acknowledged that service life and the operating distance of active oxygen radical are all very short, only nanometer
Active oxygen radical just works when particle is contacted with bacterium, therefore the specific surface area of nano particle and surface electrical behavior are antibacterial to its
Bactericidal property plays a crucial role.It is inspired by this, cuprous oxide is prepared into nano particle by inventor, and creative is applied to
In agricultural production, to replace the use of part pesticide.
Be directed to the onset condition of cucumber downy mildew simultaneously: the sporangium of cucumber downy mildew germ is at 15-20 DEG C of temperature, air
Relative humidity is higher than 83% just a large amount of generations, and the spore of the higher generation of humidity is more, therefore further after tentatively preventing
The control for carrying out temperature and humidity, will greatly reduce the incidence rate of downy mildew.
Finally, it is insufficient in first two measure prevention and control dynamics, when there is diseased plant, start chemical preventions.In chemical prevention and control
Part, inventor also and be not used the stronger bactericidal pesticide of pharmacological property, but use plant source-S-Ethyl ethylthio sulfonate instead of a part
Chemical classes pesticide.S-Ethyl ethylthio sulfonate is efficient, pollution-free plant source pesticide representative products, is that the antibiotic-of China's independent development is big
The derivative of allicin, is the ethyl homologue of allicin, and wide sterilization spectrum has certain eradicant action concurrently based on protective effect
And absorbability.Also plant growth is adjusted, promotes to sprout, improves emergence rate, improve crop yield and quality, therefore can be used as
The raw material of most of Recompounded pesticide.The present invention is on the basis of nano cuprous oxide is pretreated, by S-Ethyl ethylthio sulfonate and pyraclostrobin
Equal proportion is dissolved in missible oil (cyclohexanone and lightweight aromatic hydrocarbon solvent naphtha), and medical fluid is allow preferably to be adhered to blade face,
It is impregnated with to plant epidermis, or infiltrates into germ, in disease pest body, greatly strengthen the preventive effect of medicament.Such three processing,
Each step can reduce the probability of cucumber downy mildew generation, guarantee the high yield of cucumber and high-quality.
Specific embodiment
Technical scheme is described further combined with specific embodiments below, but not limited to this.
Embodiment 1
A kind of Organic cucumber downy mildew preventing control method, which comprises the following steps:
(1) it morbidity pre-treatment: is scattered in using nano cuprous oxide powder body in the water of 800 times of weight, is sprayed on cucumber leaf
Face, per hectare dosage 3kg, every other day sprinkling is primary, continuous sprinkling 3 times, and when sprinkling is uniformly thoughtful, and leaf front and back is equal
Even sprinkling；The preparation method of the nano cuprous oxide powder body is: by 20m L 0.5mol/L copper-bath and the poly- second of 0.1g
Glycol is added in flask, and under magnetic agitation, 0.5mol/L 40m L sodium hydroxide solution is added in above-mentioned solution, stirring
50m L 0.1mol/L ascorbic acid solution is added after 30min, continues to stir 30min；It is centrifugally separating to obtain oxygen after reaction
Change cuprous, is washed with deionized water and dehydrated alcohol and be placed in baking oven for several times, be dried to obtain nano cuprous oxide powder body；
(2) environmental Kuznets Curves: after step (1), temperature of shed is controlled after 30-32 DEG C, 3 days, controls night room temperature
Not less than 15 DEG C, early morning room temperature is not less than 10 DEG C, and ventilation dewetting, reduces humidity to 60-70%；
(3) downy mildew stadium is handled: when there is diseased plant after step (1) and step (2), next step chemical prevention is carried out,
Control method is as follows: after pyraclostrobin and S-Ethyl ethylthio sulfonate equal proportion are mixed, being dissolved in the solvent of double weight, and is added mixed
Close solution weight 10% emulsifier and mixed solution weight 3% bleeding agent, after mixing according to 30g/ mus dosage into
Row foliage-spray sprays twice altogether, is separated by 7 days；
The drying temperature of baking oven is 80 DEG C in step (1), and drying time is 2-5 hours.
Solvent described in step (3) is that cyclohexanone and lightweight aromatic hydrocarbon solvent naphtha are obtained by mixing according to volume ratio 1:2.
Emulsifier described in step (3) is styrylphenol polyoxyethylene ether and dodecyl sodium sulfonate calcium according to mass ratio
2:1 is obtained by mixing.
Bleeding agent described in step (3) is diisooctyl maleate sulfonate.
The spraying time of step (1) and step (3) is 12-15 in afternoon point.
Embodiment 2
A kind of Organic cucumber downy mildew preventing control method, which comprises the following steps:
(1) it morbidity pre-treatment: is scattered in using nano cuprous oxide powder body in the water of 700 times of weight, is sprayed on cucumber leaf
Face, per hectare dosage 4kg, every other day sprinkling is primary, continuous sprinkling 4 times, and when sprinkling is uniformly thoughtful, and leaf front and back is equal
Even sprinkling；The preparation method of the nano cuprous oxide powder body is: by 20m L 0.5mol/L copper-bath and the poly- second of 0.1g
Glycol is added in flask, and under magnetic agitation, 0.5mol/L 40m L sodium hydroxide solution is added in above-mentioned solution, stirring
50m L 0.1mol/L ascorbic acid solution is added after 30min, continues to stir 30min；It is centrifugally separating to obtain oxygen after reaction
Change cuprous, is washed with deionized water and dehydrated alcohol and be placed in baking oven for several times, be dried to obtain nano cuprous oxide powder body；
(2) environmental Kuznets Curves: after step (1), temperature of shed is controlled after 30-32 DEG C, 4 days, controls night room temperature
Not less than 15 DEG C, early morning room temperature is not less than 10 DEG C, and ventilation dewetting, reduces humidity to 60-70%；
(3) downy mildew stadium is handled: when there is diseased plant after step (1) and step (2), next step chemical prevention is carried out,
Control method is as follows: after pyraclostrobin and S-Ethyl ethylthio sulfonate equal proportion are mixed, being dissolved in the solvent of double weight, and is added mixed
Close solution weight 13% emulsifier and mixed solution weight 4% bleeding agent, after mixing according to 33g/ mus dosage into
Row foliage-spray sprays twice altogether, is separated by 8 days；
The drying temperature of baking oven is 80 DEG C in step (1), and drying time is 2-5 hours.
Solvent described in step (3) is that cyclohexanone and lightweight aromatic hydrocarbon solvent naphtha are obtained by mixing according to volume ratio 1:3.
Emulsifier described in step (3) is styrylphenol polyoxyethylene ether and dodecyl sodium sulfonate calcium according to mass ratio
2.5:1 being obtained by mixing.
Bleeding agent described in step (3) is diisooctyl maleate sulfonate.
The spraying time of step (1) and step (3) is 12-15 in afternoon point.
Embodiment 3
A kind of Organic cucumber downy mildew preventing control method, which comprises the following steps:
(1) it morbidity pre-treatment: is scattered in using nano cuprous oxide powder body in the water of 500 times of weight, is sprayed on cucumber leaf
Face, per hectare dosage 4.5kg, every other day sprinkling is primary, continuous sprinkling 5 times, uniformly thoughtful, leaf front and back when sprinkling
Uniformly sprinkling；The preparation method of the nano cuprous oxide powder body is: 20m L 0.5mol/L copper-bath and 0.1g are gathered
Ethylene glycol is added in flask, under magnetic agitation, 0.5mol/L 40m L sodium hydroxide solution is added in above-mentioned solution, is stirred
50m L 0.1mol/L ascorbic acid solution is added after mixing 30min, continues to stir 30min；It is centrifugally separating to obtain after reaction
Cuprous oxide is washed with deionized water and dehydrated alcohol and is placed in baking oven for several times, is dried to obtain nano cuprous oxide powder body；
(2) environmental Kuznets Curves: after step (1), temperature of shed is controlled after 30-32 DEG C, 5 days, controls night room temperature
Not less than 15 DEG C, early morning room temperature is not less than 10 DEG C, and ventilation dewetting, reduces humidity to 60-70%；
(3) downy mildew stadium is handled: when there is diseased plant after step (1) and step (2), next step chemical prevention is carried out,
Control method is as follows: after pyraclostrobin and S-Ethyl ethylthio sulfonate equal proportion are mixed, being dissolved in the solvent of double weight, and is added mixed
The emulsifier of solution weight 10-15% and the bleeding agent of mixed solution weight 3-5% are closed, after mixing according to 35g/ mus of use
Amount carries out foliage-spray, is sprayed twice altogether, is separated by 10 days；
The drying temperature of baking oven is 80 DEG C in step (1), and drying time is 2-5 hours.
Solvent described in step (3) is that cyclohexanone and lightweight aromatic hydrocarbon solvent naphtha are obtained by mixing according to volume ratio 1:4.
Emulsifier described in step (3) is styrylphenol polyoxyethylene ether and dodecyl sodium sulfonate calcium according to mass ratio
3:1 is obtained by mixing.
Bleeding agent described in step (3) is diisooctyl maleate sulfonate.
The spraying time of step (1) and step (3) is 12-15 in afternoon point.
Comparative example 1
This comparative example preventions are substantially same as Example 3, the difference is that without step (1) nano cuprous oxide
Pre-treatment step.
Comparative example 2
This comparative example preventions are substantially same as Example 3, the difference is that without step (3) pyraclostrobin and second
The step of allicin mixing sprinkling.
Blank example
This comparative example preventions do not use nano cuprous oxide and pyraclostrobin and second garlic with embodiment 3
Element is handled, and changes the clear water of equal quality into as blank control.
To verify cucumber downy mildew control effect of the present invention, tested.It is big that test is located at Linyi orchid Ling County
Canopy cucumber field, cucumber is the early flowering season to peak period of bearing fruit when test, and field plant growing way is uniform.Test sets 6 processing groups altogether, three times
It repeats, is averaged, each plot area 10m2, respectively S1-S6, the method pair of difference application implementation 1-3 and comparative example 1-3
The prevention and control of cucumber progress downy mildew.
Experimental cultivar: garden Feng Yuan 6；
Investigation method: every cell takes 4 points of investigation at random, and every is investigated 2 plants, and every plant is investigated its whole blade.
Blade grade scale:
0 grade: disease-free spot；
1 grade: lesion area accounts for 5% or less entire leaf area；
3 grades: lesion area accounts for the 6%~10% of entire leaf area；
5 grades: lesion area accounts for the 11%~25% of entire leaf area；
7 grades: lesion area accounts for the 26%~50% of entire leaf area；
9 grades: lesion area accounts for 50% or more of entire leaf area.
Disease index=Σ (the disease numbers of sheets at different levels × opposite value of series)/(investigation total number of sheets × 9) × 100,
Control efficiency (%)=[(disease index after disease index-chemicals treatment district application after blank district application)/it is empty
Disease index after white check plot application] × 100.Test result is as shown in the table:
1 cucumber downy mildew prevention and control test result of table
As can be seen from the table, the prevention and control of cucumber downy mildew are carried out using the method for the invention, downy mildew
Average preventive effect is up to 81%, 6246 kilograms of per mu yield.And only carry out nano cupric oxide or pyraclostrobin and S-Ethyl ethylthio sulfonate sprinkling
Comparative example 1-2, preventive effect only have 50% or so, and per mu yield is also declined.Reason may be pyraclostrobin and S-Ethyl ethylthio sulfonate spray
The step of spilling, solvent further promote being uniformly distributed for nano cuprous oxide, and the effective preventions of two steps cooperate,
Control effect is improved jointly.
It should be noted that above-described embodiment is only the section Example for realizing preferred embodiment of the invention, Er Feiquan
Portion's embodiment.Obviously, it is based on the above embodiment of the present invention, those of ordinary skill in the art are not making creative work
Under the premise of other all embodiments obtained, should fall within the scope of the present invention.
Claims (6)
1. a kind of Organic cucumber downy mildew preventing control method, which comprises the following steps:
(1) it morbidity pre-treatment: is scattered in using nano cuprous oxide powder body in the water of 500-800 times of weight, is sprayed on cucumber leaf
Face, per hectare dosage 3-4.5kg, every other day sprinkling is primary, continuous sprinkling 3-5 time, when sprinkling will uniformly thoughtfully, leaf just,
It uniformly sprays at the back side；The preparation method of the nano cuprous oxide powder body is: by 20m L 0.5mol/L copper-bath and
0.1g polyethylene glycol is added in flask, under magnetic agitation, 0.5mol/L 40m L sodium hydroxide solution is added to above-mentioned molten
In liquid, 50m L 0.1mol/L ascorbic acid solution is added after stirring 30min, continues to stir 30min；Centrifugation point after reaction
From cuprous oxide is obtained, is washed with deionized water and dehydrated alcohol and be placed in baking oven for several times, be dried to obtain nano cuprous oxide
Powder；
(2) environmental Kuznets Curves: after step (1), temperature of shed is controlled after 30-32 DEG C, 3-5 days, control night room temperature is not
Lower than 15 DEG C, early morning room temperature is not less than 10 DEG C, and ventilation dewetting, reduces humidity to 60-70%；
(3) downy mildew stadium is handled: when there is diseased plant after step (1) and step (2), carrying out next step chemical prevention, prevention and treatment
Method is as follows: after pyraclostrobin and S-Ethyl ethylthio sulfonate equal proportion are mixed, being dissolved in the solvent of double weight, and it is molten that mixing is added
The emulsifier of liquid weight 10-15% and the bleeding agent of mixed solution weight 3-5%, after mixing according to 30-35g/ mus of use
Amount carries out foliage-spray, is sprayed twice altogether, is separated by 7-10 days；
2. Organic cucumber downy mildew preventing control method according to claim 1, which is characterized in that the drying of baking oven in step (1)
Temperature is 80 DEG C, and drying time is 2-5 hours.
3. Organic cucumber downy mildew preventing control method according to claim 1, which is characterized in that solvent described in step (3) is
Cyclohexanone and lightweight aromatic hydrocarbon solvent naphtha are obtained by mixing according to volume ratio 1:2-4.
4. Organic cucumber downy mildew preventing control method according to claim 1, which is characterized in that emulsifier described in step (3)
It is obtained by mixing for styrylphenol polyoxyethylene ether and dodecyl sodium sulfonate calcium according to mass ratio 2-3:1.
5. Organic cucumber downy mildew preventing control method according to claim 1, which is characterized in that bleeding agent described in step (3)
For diisooctyl maleate sulfonate.
6. Organic cucumber downy mildew preventing control method according to claim 1, which is characterized in that the spray of step (1) and step (3)
Applying the time is 12-15 in afternoon point.
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Cited By (1)
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| CN115136964A (en) * | 2022-06-17 | 2022-10-04 | 中国农业科学院植物保护研究所 | Medicine composition containing ethylicin and pyraclostrobin and application thereof |
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