How to raise seedlings of cucurbitaceae melons? What kind of medicine should you take at the seedling stage? When will it be watered? How long will it bear fruit after flowering?

Melon, also known as cantaloupe, Bailan melon, Wallace melon, is widely cultivated in China. It is also widely cultivated in temperate to tropical regions of the world. How do you raise melons? What kind of medicine should you take at the seedling stage? When will it be watered? How long will it bear fruit after flowering? From Mr. he, a melon grower in Shandong Province, he learned that the melon platform grew up 4 days after the melon blossomed, and the size of the platform doubled. Thin-skinned cantaloupe 25 murmurMel matured in 30 days, while some varieties of thick-skinned cantaloupe matured for more than 40 days.

How to raise muskmelon seedlings?

The main results are as follows: 1. The method of seedling cultivation and transplanting of muskmelon in greenhouse should be adopted, either conventional nutritious soil or hole tray can be used to raise seedlings. The preparation method of nutritious soil is to mix livestock manure (decayed) and furnace ash at the ratio of 2:3, without caking, it is best to sieve it, and then disinfect the nutritious soil with fungicides. Carbendazim and other drugs can be used according to the description ratio. After disinfection treatment, the nutritious soil can greatly prevent the occurrence of downy mildew and sudden fall disease.

2. 2 days before sowing, put the seeds in the sun for 1-2 days, then wash the seeds with 50 ℃ warm water, slowly stir for 15-20 minutes, soak the seeds with 200x potassium permanganate solution for 20-30 minutes after cooling, then wash the residual drugs on the seeds, wrap them in a wet cloth once a day in the morning and evening, and germinate under the condition of 28 ℃. After germination, you can sow seeds.

3. Before sowing, the seedling bed should be poured through the bottom water, the thickness of the soil should be 1.5cm, and the plastic film should be put on the seedling bed to arch the greenhouse. Under normal circumstances, the seedling will emerge in 5 days. When the emergence rate reaches 70%, the plastic film should be lifted to cool the seedling and ensure that the seedling gets sufficient sunshine to ensure that it grows sturdily and well.

4. During the 4-5 days after seedling emergence, the temperature should be kept at 20-25 ℃ during the day and dropped to 8-10 ℃ at night. The film should be removed early and covered late, the dust on the film should be removed in time, and the light time and intensity should be prolonged.

5. In the 7-10 days before planting, the occurrence of seedling collapse and blight should be prevented. If it is found that it is pulled out immediately, and the medicine is sprayed in time, the root can be irrigated with 400x solution of copper ammonium mixture (the ratio of copper and ammonium = 2:11) or methyl topiramate.

6. After sowing, the seedling should be promoted by high temperature before emergence, and the suitable temperature is between 22 ℃-26 ℃. At this time, attention should be paid to no watering for 4-5 days to avoid empty length, and low temperature seedling treatment should be carried out 7 days before planting to make it adapt to the open air climate.

What kind of medicine does melon play in seedling stage?

1. Strengthen the management of seedbed.

The main results are as follows: (1) the sunny plot with high topography and good drainage is selected as the seedbed.

(2) the bed soil should be disease-free and the fertilizer should be mature. If you use an old bed, it should be disinfected.

(3) sowing should not be too dense, cover soil should not be too thick, in order to facilitate seedling emergence.

(4) do a good job in the heat preservation of the seedbed, properly ventilate and breathe, do not water the seedbed on rainy days, and keep the seedbed not dry or wet.

2. Disinfection of bed soil

(1) 3 weeks before formalin sowing, rake the bed soil loosely, use 1.5mL per square meter, pour proper amount of water on the bed surface, cover it with plastic film for 5 days, then uncover the film, rake the bed soil loose, let the liquid volatilize fully, and sow two weeks later.

(2) Pentachloronitrobenzene is mixed with 70% pentachloronitrobenzene and Dysen zinc in the same amount, 10g of mixed powder or 10g of 32% WP is used per square meter, mixed with 10-15kg of dry fine soil, the seedbed is drenched with water, a layer of mixed soil is sprinkled on the seedbed, and the remaining 2x3 are covered with seeds after sowing.

3. Seed disinfection

Soak the seeds with 50 ℃ 55 ℃ lukewarm water, or use 50% thiram wettable powder or 65% Dysen zinc wettable powder to disinfect the seeds according to 0.3% of the seed weight to kill the bacteria carried inside and outside the seeds.

4. Chemical control

If a small number of diseased seedlings have been found in the seedling bed, after pulling out the diseased seedlings, 72.2% Pulicol water agent 600 times dilution, 72% chloramphenicol water agent 600 times dilution, 15% Luheng No. 1 600 times dilution, 30% vaccine enemy, 15% carbendazim (soil fungus elimination) water agent and other agents can be sprayed once every 7 colors for 10 days to prevent and control 1 color twice. If the humidity of the seedling bed is high, a small amount of plant ash or dry fine soil can be applied to adjust it.

When will melons be watered?

1. Ensure that the watering in the shed is carried out on a sunny day, and make sure that it is sunny 2-3 days after the watering day, so as to avoid the increase of humidity and the decrease of ground temperature due to the bad weather such as continuous cloudy days, strong winds and torrential rain after watering. In the first 2 days after continuous overcast and rain, it is not suitable to water. The mild ground temperature of the shed should be raised first so that the plant can basically return to normal growth before watering.

It is best to choose watering in the morning on a sunny day, and it is appropriate to water it at about 10: 00. At this time, the water temperature is close to the ground temperature, the root system is less stimulated after watering, and the ground temperature recovers quickly, so there is enough time to remove moisture from the greenhouse. If watering after noon, the temperature difference between ground temperature and water temperature is the largest, which will make the ground temperature change suddenly and affect the growth and development of root system. Do not water in the early morning and evening to prevent the water temperature from being too different from that in the shed. Causing root damage. According to the measurement, when the difference between the water temperature and the air temperature in the greenhouse is more than 5 ℃, it is easy to damage the root system, so the plant root system should be prevented from being damaged.

2. Under the condition of low temperature in early spring. The water demand of muskmelon in greenhouse is relatively small. Watering should follow the principle of no shortage, no watering, dry rather than wet, and keep the soil water content in the rhizosphere of muskmelon at about 60%. Therefore, the amount of water should be small rather than large, and the interval between two times of watering should be appropriately prolonged. Do not use flood irrigation, it is best to use small water frequently, or watering with a kettle one by one, which can effectively prevent the obvious decrease of temperature and humidity in the greenhouse, and avoid the prevalence of muskmelon root retting or diseases caused by low temperature and high humidity in the greenhouse.

It should be heated up and humidified in time after watering. On the day of watering, in order to restore the ground temperature as soon as possible, the greenhouse should be sealed, so that the temperature in the greenhouse will rise rapidly, and the ground temperature should be promoted by air temperature. After the ground temperature rises, proper ventilation and dehumidification can reduce the indoor air humidity to a suitable range, which is conducive to the robust growth of the plant. Ventilation is best carried out when the temperature is high near noon.