Cucumber is a more diseased vegetable, in the process of cucumber field spraying, what are the 5 ta

First of all, you can't inject too much when you apply medicine. Also, don't use a lot of pesticides. It's best to get your medicine in the evening. I cannot get close to a stem when I hit it. The concentration of the medicine should not be too high.

It is necessary to pay attention to the way of watering, the way of spraying, the process of fertilization, the protection of the soil, and the prevention of some diseases.

Don't choose pesticides that are not suitable, don't spray often, don't spray too many pesticides at one time, don't spray pesticides at unsuitable times, and don't spray too much concentration.

Be sure to choose the right pesticide, the time of medication is not right, so increase the concentration of drugs, frequent drugs, and random pairing of pesticides.

Because the water content in the soil is too low, cucumber seedlings can not absorb sufficient water, cucumber seedlings absorb too much fertilizer, cucumber seedlings cell inner wall reverse osmosis, resulting in cucumber seedlings water loss, this phenomenon is generally caused by low water content in the soil or too much fertilization. Excessive nitrogen fertilizer for one-time use, especially urea, fertilizer with high nitrogen content, when applied, ammonia nitrogen fertilizer in the soil, at higher temperatures, volatilized in large quantities, urea contains 2 urea, cucumber roots are very unadaptable, it will lead to, light aboveground part growth slow, leaf wilting, flower topping, old seedlings, etc., serious cases will lead to plant death root rot.

Chronic pesticide damage is after spraying, it takes a long time for obvious symptoms to appear, the symptoms are: leaf curl or drying, rapid whitening and aging of new leaves, white small necrotic spots between leaf veins, and even the whole plant wilts and withers. Chronic drug damage occurs mildly, which will delay growth, affect yield, and may cause failure in severe cases.

Pesticide damage can be eliminated by strengthening fertilizer and water management, appropriate supplemental application of fast-acting nitrogen fertilizer, or timely spraying of a large amount of clean water on the whole plant, which can promote the normal growth of plantsIf the leaves or plants are seriously damaged, irrigation should be carried out in time, phosphorus and potassium fertilizers should be increased, and cultivation should be cultivated to promote root development. The subject is to use nitrogen fertilizer ammonium bicarbonate too quickly after planting, so that the seedlings are burned. It's not a disease, it's just a mistake in operation, so that the seedlings are irreversibly dead.

Too much fertilization at one time will make the concentration of the soil solution too high, greater than the concentration of the plant cell solution, and the plant cells will lose water, causing the plant to wilt due to water loss;When the situation is more serious, it will cause the burning of seedlings After fertilization, watering can reduce the concentration of soil solution, and it is necessary to use layered application, the method of deep application of the whole layer is used to dig blindly, so as to achieve the fusion of soil and fertilizer, so that the fertilizer is evenly distributed in the entire tillage layer. At the same time, it is necessary to pay attention to proper watering of fertilization, keep the soil moist, reduce the concentration of the solution, and not cause fertilizer damage. Hope it helps.

It is not possible to use pesticides with particularly large sorghum strength, because the growth and development of cucumbers does not have particularly high requirements for the environment, so there is no need to use pesticides with particularly strong chemical strength.

Cucumbers can not be burned in some very corrosive pesticides, can not use some bactericidal pesticides, pants can not use light pesticides, because these pesticides are very harmful to cucumbers, and even cause the death of cucumber plants.

Can not use 666, DDT, dimethoate, dimethoate, amidophos, chloropicrin, dibromochloropropane, A Chinaki isosulfonate and so on. The lethality of these pesticides is very strong.

Cucumbers can not be planted with the medicine of the tung tree, there are hydroamidophos, chloropicrin, methyl phosphorus, methyl 1605, endogenous phosphorus, Sanhong chloricifol, hydroamidothion cover tan compound and so on.

The number of pesticides is too much, there is no sub-regional spraying, and there is no attention to the protection of plants, there is no focus on prevention, and the frequency of spraying is too high, these misunderstandings will affect the yield of cucumbers.

When planting cucumbers, it is necessary to take medicine to prevent diseases, but according to different diseases. Different drug sprays are to be applied. When spraying drugs, the most taboo is not choosing the right medicine to spray.

The second is that the time of medication is not right, which will also affect the growth of plants. Do not spray on rainy days. Don't add multiple doses at will.

Don't use the potion too often. Do not use pesticides in mixed proportions.

When it comes to the cultivation and management of vegetables, including cucumbers, many vegetable farmers now rely heavily on experience, as do medicines. Once a drug is found to be effective in controlling a pest or disease, they will believe in it. Even if it is dependent, when similar symptoms occur in the future, it is natural to think of using this drug, but this is a misunderstanding.

The choice of pesticides is not right, the time of medication is not right, increase the concentration of pesticides at will, often use drugs, and mix pesticides at will.

The frequency of spraying is too high, focusing on the protection of cucumbers, not paying attention to disease prevention, which has exceeded the scope of spraying, and the dose of spraying is too much.

<> tomatoes: cucumbers are shallow root crops that like high temperature and high humidity environments, while tomatoes are drought-tolerant deep root crops that prefer medium and moderate humid environments, requiring the soil to be dry and wet, so they are not suitable for planting together.

Vine plants such as loofah and bitter gourd: cucumber has high light requirements and is not suitable for planting with plants that are also climbing vines, such as loofah, bitter gourd, pumpkin, winter melon, etc.

Celery, coriander and other low sun-loving crops: The underside of cucumbers is not very suitable for growing some low vegetables that also like the sun, such as celery, Chinese cabbage, coriander, chrysanthemum, spinach, onions, etc.

1. Cucumbers can't be grown with anything

1. Tomatoes.

The reason why cucumbers are not suitable for planting with tomatoes is that cucumbers are shallow root crops that require frequent watering to keep the soil moist, while tomatoes are drought-tolerant deep root crops that can absorb water from deep soils and require the soil to be dry and wet. These two crops have different requirements for light and temperature, cucumbers prefer high temperature and high humidity environment, and tomatoes prefer medium and medium humidity environment.

2. Loofah, bitter gourd and other vine plants.

Cucumber is a climbing plant, and has high light requirements, it is best not to plant it with vine plants, such as loofah, bitter gourd, pumpkin, winter melon, etc. Take loofah as an example: the vines of loofah seedlings are more vigorous than cucumbers, and the two are planted together, which is easy to entangle with each other, which not only affects photosynthesis, but also cross-planting with cucumbers, affecting the taste, and even making cucumbers grow loofah lines.

3. Celery, coriander and other low-rise sun-loving crops.

Cucumber is a climbing crop, and its underside is not very suitable for growing some low vegetables that also like the sun, such as celery, Chinese cabbage, coriander, chrysanthemum, spinach, onions, etc. These vegetables require plenty of sunlight, and if grown with cucumbers, cucumbers can block out sunlight, which in turn affects photosynthesis and ventilation.

2. What are the diseases of cucumbers?

1. Common diseases of cucumber mainly include: downy mildew, gray mold, powdery mildew, viral disease, bacterial horn spot, leaf blight, anthracnose, cataplexy, blight, target spot, brown spot, etc.

2. The reason for the disease of cucumber is mainly caused by the high temperature and high humidity environment caused by the warming weather, the gradual rise of temperature and improper management. Due to the frequent mixing of diseases, during prevention and control, we must pay attention to the compound of agents and the flexible control of dosage in different disease periods.

Cucumbers have viral diseases, and prevention is the main thing. At the same time, strengthen water and fertilizer, cultivate strong seedlings, avoid premature aging in the later stage, improve plant disease resistance, and use Ningnanmycin or Ataylen or amino-oligosaccharides or toxic fluoride and other drugs to add zinc sulfate and brassinin after the onset of the disease.

Viral diseases should first look at aphids, whiteflies and other stinging and sucking mouthparts pests, which are the source of transmission, with acetamiprid, imidacloprid, diacetametham, thiamethoxam and so on. Spray viral diseases with pesticides such as lentinan polysaccharides, amino-oligosaccharides, etc., and it is best to mix zinc fertilizer and regulator spray in advance.

Control technology. Agricultural prevention and control is the mainstay. 1000 times of 10% Ningnanmycin soluble powder can be used to spray, with an interval of 5 days; or 300 450 times liquid spray of 2% amino-oligosaccharide aqueous solution, with an interval of 7 10 days; or 5% bacterial poison water agent 250 300 times liquid spray, with an interval of 7 days; or 3% triazole riboside aqueous solution 900 1200 times liquid spray, with an interval of 7 to 15 days.

Cucumber can be used for viral disease, virus net has a good prevention and control effect on viral disease, 100 140g of medicine, 400 600 times of water, spray once every 7 10 days, and use it for 2 3 days.

For a safe and efficient solution to prevent cucumber disease in advance, disease control can be done with a drug sequence table. The specific drug sequence table is arranged as follows: Period Before the drug flowering Dimethoate (glybendate) + golden bud (carbendazim) flower bud development period Vitality (zinc-manganese) + true new (carbendazim) fruiting period Roll next to Nianku (carbendazim) + Banfeng (carbendazim) harvest period Weeding (carbendazim) + Fengyu (carbendazim) In addition, the early prevention of diseases in cucumber is not only limited to the drug sequence table, but also should be taken

1.Supplementary fertilizer: timely feeding, balanced fertilization, promote root development, enhance plant disease resistance, conducive to disease prevention and control.

2.Strengthen soil tillage: improve tractors, hoes, etc., or multi-level recultivation, crop rotation, etc., to strengthen the development of plant roots, promote nutrient absorption, and enhance the ability of plants to resist diseases.

3.Timely application of pesticides: according to the intensity of farm diseases, select appropriate control measures to make the pesticide effect effective and stable.

4.Regular watering: keep the soil moist in time, maintain the water supply of the land, air humidity, reduce microbial activities and increase the disease resistance of plants.

Answer] :(1) The pattern of pathogenesis.

Overwintering and summering: Germs can overwinter in soil, diseased residues and unripe bacteria-carrying fertilizers, and seeds can also carry bacteria.

Transmission: Mainly by irrigation water, soil tillage, and underground pests and soil nematodes, the pathogen invades through the roots.

Infection: Re-infecting the rock posture is not important.

Pathogenesis: Severe disease in continuous cropping and mild disease in rotation soil. The soil is heavy and clayey, low-lying, poor drainage, low ground temperature, and the disease is heavier; Improper management of fertilizer and water, serious illness.

Varieties: Generally blight-resistant varieties are more susceptible to downy mildew, while downy mildew-resistant varieties are more susceptible to blight.

2) Prevention and control measures.

On the basis of planting disease-resistant varieties, comprehensive measures such as strong cultivation management of Jialing cavity, soil treatment with pesticides in seriously ill areas, and pesticide application in the early stage of disease should be taken.

1) Selection of disease-resistant varieties: screening some more disease-resistant varieties according to local conditions.

2) Strengthen cultivation management: reasonable fertilizer and water. Use a nutrient bowl to avoid damaging the roots when the seedlings are raised.

3) Crop rotation: an important measure to prevent and control Fusarium wilt, non-melon crops should be rotated for more than 3 years.

4) Grafting and disease prevention: grafting cucumbers with pumpkins and other trees to prevent and control cucumber wilt, and has been popularized and applied.

5) Pesticide control: use pesticides for seeds, seedbeds, planting hole treatment, or pesticide irrigation in the early stage of disease. Commonly used agents are: dipotent, methyl tobuzin, glass ethyl phosphorus aluminum (DTM), methyl phosphine and carbendazim.

Hello Hello Here is a list of safe and efficient solutions for cucumbers to prevent diseases at different times: <>

Seed Treatment: Choose healthy seeds, which can be sterilized or soaked in warm water to improve germination and disease resistance. Soil Treatment:

Ensure that the soil in which cucumbers are grown is rich in organic matter, well drained, and properly sterilized to reduce the presence of pathogenic microorganisms. Selection of disease-resistant varieties: Choose varieties with strong resistance to common cucumber diseases, such as downy mildew resistance, blight resistance, etc., to reduce the risk of disease occurrence.

Reasonable planting density: control the planting density of cucumbers, avoid overcrowding, and rotate to provide adequate ventilation and sunlight to reduce the chance of disease transmission. Keep it dry

Keep the relative humidity of the cucumber growing environment moderate, avoid high humidity for a long time, and use drip irrigation and other irrigation methods to reduce the reproduction of pathogenic bacteria. Regular disease inspection: Regularly inspect cucumber plants to observe whether there are abnormal symptoms, such as yellow leaves, spots, wilting, etc., and promptly find and isolate suspected infected plants.

Disease prevention and control measures: The use of natural and organic disease prevention methods, such as spraying biological pesticides, improving nutrients**, adjusting soil pH, etc., can help prevent common cucumber diseases. Biological control:

Biological control with probiotics, beneficial insects, etc., to reduce dependence on chemical pesticides while protecting the environment. <>

Cleaning up diseased plants: Remove dead or infected cucumber plants in time to avoid the spread and spread of pathogenic bacteria. Crop rotation and leisure: Reasonable crop rotation and cucumber fallow period in different planting seasons to break the life cycle of pathogenic bacteria and reduce the occurrence of diseases. <>

Cucumbers are often threatened by insect pests in the process of planting, such as whitefly, American spotted fly, cinnabar leaf mite and aphid, etc., and their control methods are introduced now.

1. White whitefly.

Also known as greenhouse whitefly, white planthopper, its colony lives on the back of the leaves of tomato plants to suck the juice, the damaged leaves fade green, yellow, wilt, and secrete honeydew to induce coal pollution disease, and spread some plant viruses, aggravate the occurrence of viral diseases. Whiteflies are pests that transmit viruses and should be controlled in time. It is recommended to use some egg-killing drugs in time, which can kill both eggs and eggs.

42% of spiroethyl ester, the main feature of eggkilling, may be sprayed and found that whiteflies fly everywhere in the shed, feel that the agent has no effect. Because it is mainly ovicidal, it can control the effect in the later stage.

Prevention and control measures: set up insect-proof nets at the vents; In the early stage of whitefly, the method of yellow plate booby trapping can be adopted; It can be fumigated with aphid smoke killer (330 grams per mu), or aphid lice fumigation agent (300 400 grams per mu), smoked once every 7 8 days, and smoked 2 3 times in a row; It can be sprayed with 10% imidaxcarb EC 400 600 times or 25% chlorpyroxine 1500 times, etc., and the effect is better after smoking.

Summer cucumber diseases and insect pests are more prominent, and the main pests and diseases and control measures are:

Cataplexy: spray prevention and control with 70% dixone 300 times, 75% chlorothalonil 800 times or 70% methyl tobuzine 800 times. Fusarium wilt:

Spray with 70% Dixone 800 times or 20% Likson 800 times solution. Powdery mildew: Spray with 20% powdery rust 2000 times, 10% Shigao 2000 3000 times or 75% chlorothalonil 700 times.

Melon aphid: spray with 300 times of afudin, 3000 times of Uranus or 1500 times of 25% chloraceous aphid. Melon fruit fly:

It is sprayed with 48% Lesbenzene 1000 times, 90% trichlorfon 1000 times or 80% dichlorvos 1000 times. Yellow striped jumping beetle: can be sprayed with 10% imidacloprid wettable powder.

Cucumber due to soil, fertilizer, insect, seed and water common diseases, such as powdery mildew, anthracnose, downy mildew, blight, bacterial horn spot, vine blight and wilt and other diseases, in addition to conventional agricultural control, only the control of pesticides is the most effective. Agricultural control includes soil disinfection and sterilization, removal of pest residues and agricultural waste, removal of weeds, deep tillage, use of biological fertilizer, use of fermented and rotten organic fertilizer, seed disinfection and sterilization and other agricultural measures to reduce the occurrence of pests and diseases. Pharmaceutical prevention and control can use broad-spectrum or special drugs for a single disease to eliminate germs.

Broad-spectrum fungicides include carbendazim, benzylmypoxide, chlorothalonil, methyl tobuzin, formabi, etc., and professional fungicides include mypvanazim, dimefen, downy mildew and other fungicides. In general, broad-spectrum fungicides are used for disease control.