What to do with watermelon seedlings burning, what to do with watermelon seedlings flowering?

Root rot and root burnt are the two main physiological diseases of watermelon seedlings, which have a great impact on the cultivation of watermelon seedlings. Therefore, the author suggests that melon farmers should take corresponding preventive measures according to the cause of the disease.

Rotten roots. Symptoms: The root system changes from milky white to reddish-brown, no new roots are generated, growth stops, the plant grows slowly, and the seedlings wilt.

It is mainly caused by the low temperature and high humidity of the bed soil. Root rot is more likely to occur under environmental conditions even on rainy days. In addition, continuous cropping plots are also prone to watermelon root rot.

Preventive measures: improve the environmental conditions of seedlings, it is best to use electric hotbed or biological hot bed for seedling raising; control watering, especially on rainy days; For melon seedlings with light rotten roots, the temperature and humidity can be increased by loosening the soil in the seedbed and spreading plant ash, so as to facilitate the growth of melon seedlings as soon as possible; After the melon seedlings send out new roots, 4000 times of 802 and 100 times of urea mixture are applied to promote the growth and development of watermelon roots.

Burn the roots. Symptoms: yellowing of the root system, no new roots but no rotten roots, slow growth of the above-ground parts, dwarf and brittle plants, the formation of small old seedlings.

This is mainly caused by excessive fertilization and dry soil. In addition, the uneven mixing of bed soil is also prone to root burning. Precautionary measures:

When preparing bed soil, fertilizer should be used appropriately, especially to avoid excessive fertilizer use; Organic fertilizer should be fully decomposed before application, and fully mixed with chemical fertilizer and bed soil; The seedbed should be watered in a timely manner to keep the bed soil moist and avoid the melon seedlings from burning due to the lack of water in the soil; The amount of watering should be appropriately increased for the melon seedlings that have been burned, and it is advisable to wet the bed soil, not to overwater, in order to prevent the bed soil from being too wet for a long time, and take measures such as warming and heat preservation to appropriately increase the bed temperature to facilitate the growth of watermelon roots; Combined with rehydration and watering, 4000 times of 802 solution was applied to promote the recovery and growth of watermelon roots.

If it is a lighter seedling, it can be adjusted by water and fertilizer to promote its regrowth, if it is heavier, it should be pulled out in time, replanted seedlings and replanted, and analyze the causes to avoid similar hazards in the future.

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The method of taking care of the hidden flowering next to the watermelon seedling skin is: 1. Water control and fertilizer control: watermelon should be watered less or not watered directly during the flowering period, and the watering is easy to fall flowers.

But it can't be too dry, a little watering is enough to bloom. Half a month before flowering, it is necessary to apply an appropriate amount of fertilizer, and after flowering, it is necessary to stop fertilizing in time. 2. Light temperature:

If you want watermelon to have a higher sugar content, you need to give it enough light. There should also be a certain temperature difference between day and night. In the summer, you can bask in the sun all day, increase the internal temperature during the day, and ventilate it at night, so that the temperature difference between day and night will increase.

3. Proper thinning of flowers: After flowering, proper thinning treatment should be carried out, starting from the side branches of fruiting. Leave 6-8 flowers on the sturdy side branches of a burning hall, and 6 flowers on the weaker ones.

The rest should be cut off, leaving too many flowers will not produce good results.

Hello. 1. Lack of nutrients.

Reason: watermelon seedlings should be paid attention to timely fertilization in the growth, if you forget to fertilize for a long time, it will lead to the lack of nutrients in watermelon seedlings, resulting in weak growth and yellowing of leaves.

Solution: When planting, try not to crop continuously, ensure good nutrients in the soil, timely fertilization to ensure good nutrients, and timely spraying of foliar fertilizer, you can apply foliar fertilizer of fertile leaves, fast absorption efficiency, good effect.

2. Improper lighting.

Reason: Lack of sunlight and difficulty in synthesizing nutrients will cause yellowing of leaves, and careless exposure to the sun will also cause yellowing of leaves.

Solution: You should see the light reasonably and keep it in plenty of light, but you must avoid strong light when the temperature is high in midsummer.

Watermelon seedlings can only be replanted after the soil is burned. The burning roots of watermelon seedlings are mainly manifested in the yellowing of the root system, and at the same time, the spike spring does not develop new roots, but it will not rot the roots. This is the underground part.

So what are the manifestations of watermelon seedlings on the ground? Watermelon seedlings grow slowly, the plants are short and brittle at the same time, similar to the formation of small old seedlings, listless appearance. What are the causes of root burning?

Root burning is mainly caused by excessive fertilization, improper fertilization, and dry soil. Preventive measures, first of all, when the bed soil is configured, it is necessary to fertilize properly, and some growers increase the dosage of fertilization without authorization in order to increase yield. Therefore, fertilizer should be applied reasonably according to the requirements.

Remember to avoid using too much fertilizer. If organic fertilizer is used, then it must be fully decomposed before application, and it is not necessary to use organic fertilizer that is not decomposed or half-raw. When fertilizing, be sure to mix well with the bed soil.

At the same time, the seedbed should be watered appropriately to ensure that the bed soil is kept moist and avoid the seedlings from being burned due to the lack of water and dryness of the soil.

1. The temperature is too low. When raising watermelon seedlings, the temperature requirements are relatively high. If there are continuous rainy days, the soil temperature will be too low, which will seriously affect the growth of watermelon seedlings and cause stiff seedlings.

And the planting time is also very important, not too early or too late, if the planting is too early, the soil temperature is insufficient. Therefore, the temperature cannot meet the growth needs of watermelon seedlings, and too long time will lead to stiff seedlings. Therefore, when we raise seedlings, it is best to use thermal insulation beds for seedlings, control the planting period, carry out it on warm and sunny days, and then do a good job of thermal insulation measures.

2. Excessive moisture. Water is also very important for the growth of watermelon seedlings, if the soil moisture content is too large, the increase in soil temperature will cause a certain regret of the mountain to accompany the hindrance. As a result, the activity of seedling roots is inhibited, nutrient and water uptake is reduced, and the growth rate of the plant is reduced.

But the moisture should not be too low, if the soil moisture content is too low. The water and nutrient content in the soil is completely unable to meet the growth needs of watermelon seedlings, which will also lead to the phenomenon of watermelon seedlings. Therefore, we should reasonably control the water during the seedling raising and planting period, properly cultivate the soil, and prevent soil compaction.

3. Soil clay weight. Although watermelons have a strong growing capacity and are able to grow on most of the soil. However, it will have a great impact on the yield and quality of watermelon, especially if it is planted in clay soil or soil compaction, and the permeability is too poor.

It could not meet the oxygen demand of the roots of watermelon seedlings, resulting in insufficient root growth ability. The absorption of camp and only cultivation is blocked, and the phenomenon of stiff seedlings is formed. Therefore, we must not only do a good job in the selection of soil, but also pay attention to the land preparation work before sowing, and turn the soil about 30 cm deep.

Increase the proportion of farmhouse fertilizer and mix sand to improve the structure of the soil.

4. Improper fertilization. Although when growing watermelons, fertilization work is very important. However, we should pay attention to control the amount of fertilizer, not too much fertilizer, too much, excess nutrients and too concentrated.

As a result, the solution concentration of the soil increases, and the roots cannot grow downward, which affects the nutrient absorption of the roots and hinders the growth of seedlings. And if the basal fertilizer is applied too deeply, the fast-acting fertilizer in the upper part of the soil is completely insufficient, resulting in a lack of nutrients for seedlings, and malnutrition causes stiff seedlings. Therefore, when we plant watermelon, we should pay attention to controlling the amount of fertilizer according to the plant condition and soil fertility, and then apply an appropriate amount of fast-acting fertilizer at the roots.

Symptoms of root rot: the root system changes from milky white to reddish-brown, no new roots are generated, growth stops, plants grow slowly, and seedlings wilt. It is mainly caused by the low temperature and high humidity of the bed soil.

Root rot is more likely to occur under environmental conditions even on rainy days. In addition, continuous cropping plots are also prone to watermelon root rot. Precautionary measures:

To improve the environmental conditions of seedlings, it is best to use electric hotbeds or biological hotbeds for seedlings raising; control watering, especially on rainy days; For melon seedlings with light rotten roots, the temperature and humidity can be increased by loosening the soil in the seedbed and spreading plant ash, so as to facilitate the growth of melon seedlings as soon as possible; After the melon seedlings send out new roots, 4000 times of 802 and 100 times of urea mixture are applied to promote the growth and development of watermelon roots.