How to prevent watermelon death? What is the reason for the death of watermelon seedlings?

Preventive measures. 1. Control the area of multiple cropping, and implement crop rotation for more than 8 years in melon fields to reduce the chance of disease.

2. Apply rotting fertilizer, kill insects with insecticides such as phosphine, ensure that the whole watermelon seedlings are strong, reduce the pest damage to the seedlings, and ensure the whole seedlings.

3. Cultivate strong melon seedlings, improve the disease resistance of watermelon seedlings, and prevent the occurrence of dead seedlings.

4. Prevention first, combination of prevention and control, and disease control. Before sowing watermelon, the seeds are disinfected with mercury solution, and the soil is disinfected and insecticidal with anti-kuning and phosphos during sowing, and the diseased plants are found in the field and removed in time, and the planting holes are disinfected with lime, and the melon fields are sprayed with anti-kuning tobuzin and other agents for protection and prevention. In the early stage of the disease, spray 1 time in 4 days to control the spread, and then the spraying interval is generally 7 days as well, and the back of the leaf and the leaf surface should be sprayed full, especially focusing on the back of the leaf.

5. Disease-resistant gourds can be used as rootstock grafting seedlings for serious disease; At the beginning of the disease, the roots were irrigated with 600 times the solution of carbendazim, 250 grams per plant, and the control effect was good.

Strong watermelon seedlings are the key to improving the yield and quality of watermelon. However, the seedlings are sensitive to the external environment, and if they are not careful, there will be the problem of dead watermelon seedlings, which will cause great losses to agricultural production. What is the cause of the problem of dead watermelon seedlings? How can we prevent watermelon seedlings from dying?

One of the reasons for the death of watermelon seedlings during the seedling raising period is that the temperature of the planting environment is not suitable, resulting in serious root damage to the melon seedlings. Melon seedlings are sensitive to temperature changes, especially watermelons planted in greenhouses, after watermelon furrows are covered with plastic film, under the irradiation of strong light, the ground temperature tends to rise higher, which is easy to cause watermelon seedlings to lose water and wilt. If the watering is insufficient, it is easy to damage the roots due to insufficient water, resulting in the death of watermelon seedlings.

If there is a cooling weather and continuous rainfall, the soil moisture content is high, the soil is clayey and the light is insufficient, it is not easy to grow new roots after transplanting, the root system will turn yellow, and the melon seedlings are also easy to wither and die.

Secondly, improper fertilization can also lead to the death of watermelon seedlings. Many watermelon growers like to apply chicken manure, pig manure and other farm fertilizers as base fertilizers, but if these farm fertilizers are applied to the ground without rotting, it will lead to high surface salinity, resulting in watermelon seedlings death. Moreover, chicken manure and pig manure that are not fully rotted carry a large number of pathogenic bacteria, which are prone to soil-borne diseases, which are also important reasons for the death of watermelon seedlings.

Finally, disease is also an important cause of watermelon seedlings death. There are many kinds of watermelon diseases, in addition to the common diseases powdery mildew, blight, cataplexy, and root-knot nematode disease, which is more harmful. Watermelon root nematodes damage the roots of watermelon, mainly lateral roots and fibrous roots.

When it is infected, it pierces the root system with a sharp mouth needle to absorb the nutrients inside. Watermelon root nematodes puncture the roots at the same time, they also secrete saliva, and the saliva will produce a chemical effect after entering the root tissue, which will cause lateral roots and fibrous roots to grow nodules of different sizes. As a result, the roots cannot absorb water and fertilizer, and the watermelon cannot absorb nutrients, which will lead to the death of watermelon seedlings.

Therefore, the prevention and control of dead watermelon seedlings should pay special attention to watermelon root nematodes. Experts suggest that it is best to choose Yinghui threadicide for the prevention and control of watermelon root nematode farmers, and Yinghui threadicide has launched two dosage forms of granules and water according to the various growth stages of watermelon. Among them, Ligensa has won many awards such as the national "Plant Protection Product Contribution Award" and "Guangdong Famous Brand Product", and is the leading brand of domestic threadicide.

If the watermelon seedling is harmed by the root-knot nematode during the seedling raising period, farmers can use the Root Sand, Yinghui Express, Heaven and Earth Line, Wireless and other products in Yinghui Threadicide, which has a significant effect on the first-class knot nematode.

Summary. Hello, glad to answer for you. Watermelon dead seedlings must be one of them.

As soon as they saw the dead seedlings, some farmers panicked: What is going on? Can it still be saved?

What to do......In fact, there is only one most important thing, to find out what caused the dead watermelon seedlings.

It is understood that the occurrence of dead watermelon seedlings is related to climatic conditions, soil texture, water and fertilizer management and other factors, such as the temperature in the shed is too high or too low, which is easy to cause watermelon seedlings to lose water and wilt or cause dead seedlings to damage the roots due to high temperature; or the application of organic fertilizer that is not fully decomposed, resulting in root burning and seedling death; If the soil is clayey and watered too much, the soil has poor air permeability for a long time, and it is easy to cause dead seedlings due to root rot.

What is the reason for the death of watermelon seedlings?

Hello, glad to answer for you. Watermelon dead seedlings must be one of them. As soon as they saw the dead seedlings, some farmers panicked

What's going on? Can it still be saved? What to do......In fact, there is only one most important thing, to find out what caused the dead seedlings of the slippery watermelon.

It is understood that the occurrence of dead watermelon seedlings is related to climatic conditions, soil texture, water and fertilizer management and other factors, such as the temperature in the shed is too high or too low, which is easy to cause watermelon seedlings to lose water and wilt or cause dead seedlings due to the high temperature of Wang Ranglu; or the application of organic fertilizer that is not fully decomposed, resulting in root burning and seedling death; If the soil is sticky, watered too much, and the soil is not well ventilated and trapped for a long time, it is easy to cause dead seedlings due to root rot.

The watermelon seedlings die as soon as they grow.

Hello, most of them are carrying the watermelon with the balance book and suffering from cataplexy and blight. Cataplexy is the most common disease at the seedling stage, the base or middle ridge of the embryonic stem exposed at the seedling stage is soaked in water, and then becomes yellow-brown and shrunken, the cotyledons have not yet withered, and the seedlings are suddenly cataplexed, so that the seedlings are attached to the ground, and sometimes the cotyledons and cotyledons of the melon seedlings have been generally rotted, browned and died. Standing blight is mainly harmful to the base of the seedling stem or the underground roots, at the beginning of the oval dark brown lesion on the stem, gradually concave inward, the edge is more obvious, after the expansion around the stem, causing the stem to shrink and dry up, and then the melon seedling dies.

What's the best way to do it?

Hello, when the watermelon seedlings grow to more than 30 cm, if you find that the seedlings wilt, you can cut a longitudinal small mouth of 2 cm long and 4 5 mm deep at the intersection of roots and stems at the intersection of roots and stems, and then cut the purple garlic into 2 4 mm thick slices, put them at the edge of the knife, bury the soil and water, after this treatment, you can ensure that the melon seedlings are not rotten and die. 2. Use 50 grams of urea, potassium dihydrogen phosphate and white sugar per mu, mix the three, first melt with an appropriate amount of warm boiled water, and then add 50 kg of water (including warm boiled water) to prepare a mixture. Starting from the watermelon seedlings, spray the stems and leaves of the melon plant evenly with this mixture once every 7 days, and spray 2 or 3 times in a row, and the control effect can be more than 95%.

It can also be used to irrigate the roots with this mixture at the beginning of the disease, and it can be watered once every 3 days, 3 times in a row.

<> watermelon is a common fruit, and it is not to mention how refreshing it is to eat a bite of chilled watermelon juice in the summer. Watermelons are planted in many places in China, and the watermelons grown are different in different places and seasons. When planting watermelons, various problems are often encountered, such as dead seedlings of watermelons, no melons, small melons and so on.

For the question mentioned, what is the reason why the watermelon seedlings died? Let me tell you what I think.

1. Excessive rain leads to the death of watermelon seedlings. In the event of continuous rainy days, the soil is moist, resulting in the roots of the watermelon seedlings being soaked in the moist soil, and the roots will rot, and the watermelon seedlings will die at this time. Therefore, in case of continuous rain, it is necessary to drain the water in time.

2. The weather is too dry. The weather was dry and not watered in time, and the watermelon seedlings died of lack of water. Therefore, it is necessary to water the watermelon seedlings in time to ensure the moisture of the soil.

3. Fertilization reasons. If unripened farmyard manure is applied, it will cause watermelon seedlings to burn and die after application. In the same way, some chemical fertilizers directly contact watermelon seedlings, which will also cause dead seedlings.

Therefore, when applying farmhouse fertilizer, it should be applied after ripening, and chemical fertilizer should be far away from the roots.

4. Temperature problem. If the temperature is too high or too low, it may cause the death of watermelon seedlings. The temperature is too low, and the watermelon seedlings are frozen to death, and the growth stops below 10.

When the temperature is high, the soil moisture will evaporate quickly and die due to lack of water. Therefore, if the weather is too low, it is necessary to take good measures to keep warm, and if it is too high, it is necessary to shade and water properly.

5. Pests and diseases. Watermelon seedlings encounter wilt, root rot, etc., and the main insect pests are small ground tigers, aphids, red spiders, etc., which will cause the death of watermelon seedlings. Therefore, it is necessary to take control measures at the time of planting to reduce losses.

6. Continuous causes. Continuous cropping will lead to aggravation of pests and diseases in the soil, and imbalance of nutrients in the soil will cause seedlings to die. Therefore, it is best not to grow watermelons all the time on the same land, but to rotate crops, and to disinfect and sterilize the soil.

In short, there are many problems encountered in planting watermelons, about the death of watermelon seedlings, the above is what I thought of, I hope it will be useful to you.

The occurrence of dead watermelon seedlings is related to climatic conditions, soil texture, water and fertilizer management and other factors, such as the temperature in the shed is too high or too low, which can easily cause watermelon seedlings to lose water and wilt or cause dead seedlings due to high temperature damage to the roots; or the application of organic fertilizer that is not fully decomposed, resulting in root burning and seedling death; If the soil is clayey and watered too much, the soil has poor air permeability for a long time, and it is easy to cause dead seedlings due to root rot. In addition to the above reasons, the death of watermelon seedlings is more likely to be due to pests and diseases. Watermelon seedling diseases mainly include cataplexy, blight and root-knot nematode disease, so experts especially remind that growers need to combine nematodes to prevent and control nematodes in addition to strengthening field management in preventing the occurrence of dead watermelon seedlings, so as to provide a suitable soil environment for the growth of watermelon.

In the selection of threadicide, it is recommended that farmers choose Yinghui threadkiller. Before watermelon sowing or transplanting, use Yinghui threadicide granules furrow, hole or whole field spraying, which is effective for nematodes for 2-3 months. If the watermelon is seriously damaged during the growth period, the roots should be irrigated with Yinghui blue root sand mixed with water, and the application should be washed.

Nutrition is insufficient, when planting watermelons, it is necessary to ensure reasonable fertilization and watering to ensure the survival rate.

Prevention of disease occurrence: select varieties with strong resistance to diseases for planting, maintain good field management, including regular soil loosening, fertilization, weeding, etc., control the spread of pathogenic jujube fungus, and try to avoid injury to foliage, stems and other tissues. 2.

Use of prevention and control agents: chemical control agents can be used to spray in the early stage of lead damage before the disease, such as manganese oxide, chlorothalonil, etc. However, it is necessary to pay attention to the dosage and use time when using prevention and control agents to reduce pollution and harm to the environment and human body.

3.Biological control: Biological control methods can also be used for watermelon seedling blight, such as the introduction of beneficial microorganisms that have an antagonistic effect on pathogenic bacteria, such as Bacillus subtilis.

This method is relatively more environmentally friendly to use, but the effectiveness needs to be evaluated on a case-by-case basis. In the prevention and control of watermelon seedling blight, the following matters should also be noted:1

Observe the condition of watermelon seedlings in time, and once the disease is found, measures should be taken in time without delay. 2.For watermelon seedlings that have been infected with the disease, they should be uprooted in time to avoid the continued spread of the disease.

3.In the process of applying pesticides, it is necessary to carefully read the instructions for the use of prevention and control agents, and use them in accordance with the standard dosage to avoid harm to the environment and the human body. 4.

In the process of prevention and control, it is necessary to pay attention to personal protection, wear protective clothing, gloves and other protective equipment to avoid contact with pesticides and affect health. 5.For the use of biological control methods, it is necessary to select biological control preparations with appropriate varieties and strong vitality, and use them in strict accordance with the instructions to achieve the best control effect.

The above suggestions are for your reference I wish you a happy life and all the best! 拾殺

Qinqin is happy to serve you, Qinqin Xicong Pinnagua Li Blight is a disease caused by fungi, commonly found in the environment of high temperature and high humidity. The measures to prevent and control the disease are as follows:1

Choose disease-resistant varieties: Choose watermelon varieties with strong disease resistance. 2.

Plant healthy seedlings: Choose healthy watermelon seedlings for planting, and avoid using soil with high levels of pathogenic bacteria. 3.

Control humidity: Avoid overwatering, keep the soil moderately moist, and reduce air humidity. 4.

Dredging and ventilation: Remove weeds in time and dredge ventilation to reduce the chance of disease occurrence. 5.

Use of pesticides: Use effective pesticides for control when necessary, but should be used correctly according to pesticide instructions. The above measures can effectively prevent and control the occurrence and spread of watermelon blight.

Summary. Hello pro 3. Watermelon blight control methods 1. Agricultural control methods. The selection of disease-resistant varieties, watermelon seed coating with fludioxonil suspension 10ml plus 35% methafen 2ml to water 180ml coating 4kg seeds or seed coating agent No. 9 or No. 10 coating, can effectively prevent and control blight, but also can treat cataplexy and anthracnose.

For the single occurrence area of spring-sown watermelon disease, seed coating agent No. 9 can be selected; When the watermelon pests and diseases sown in summer are mixed, seed coating agent No. 10 can be selected, which can not only effectively control seedling diseases, but also treat underground pests.

Hello pro 3. Watermelon blight control methods 1. Agricultural control methods. The selection of disease-resistant varieties, watermelon seed coating with fludioxonil suspension 10ml plus 35% methafen 2ml to water 180ml coating 4kg seeds or seed coating agent No. 9 or No. 10 coating, can effectively prevent and control blight, but also can treat cataplexy and anthracnose. For the single occurrence area of spring-sown watermelon disease, seed coating agent No. 9 can be selected; When the watermelon pests and diseases sown in summer are mixed, you can choose to use Lupi seed coating agent No. 10 such as Xi Li, which can not only effectively control the disease of seedling residue, but also treat underground pests.

Watermelon Rock Hall Seedling Blight is a disease caused by fungi, which can cause leaf shriveling, yellowing, and plant death. The following are the methods to prevent and control blight:1

Remove the soil of diseased residues and roots to kill germs. 2.Before planting, disinfect the soil with plant ash or lime powder to kill germs in the soil.

3.Seedlings are raised on a sterile substrate to reduce the spread of pathogens. 4.

Spraying fungicides, such as carbendazim, zinc oxide, etc., can be sprayed in the early stage of control. 5.Strengthen ventilation and maintain air circulation to reduce the growth and reproduction of germs.

6.For plants that have already developed blight, they should be removed in time to avoid the spread of germs. In short, it is very important to prevent and delay the occurrence of blight, and it is necessary to strengthen management, call jujube plum to maintain field hygiene, and spray fungicides regularly to reduce the occurrence of diseases.

can all be used for reference.