What does white radish seedling and fixed seedling mean? What should I do?

Seedlings: seedlings, also known as sparse seedlings, are to ensure that the seedlings have enough growth space and nutrient area, and a part of the seedlings should be removed in time, and the strong seedlings should be selected to make the seedlings have sufficient air circulation and sunshine.

Seedling: Seedling is after the seedling, when the number of seedlings retained in the farmland reaches the required number of seedlings after removing the excess part of the seedlings, it is no longer necessary to remove the excess seedlings, and the number of crop seedlings in the farmland is basically stable, it is called the seedling.

After radish planting, the time interval between the first seedling and the second seedling is generally about 7 to 10 days. When thinning seedlings, we should try to maintain a small range of action, and the seedlings will not need to be pulled out. In this way, it is possible to avoid driving other seedlings that need to be retained as much as possible, and will not cause damage to the root system.

At the same time, the best time for radish seeding is to be carried out in the evening on a cloudy or sunny day, and it is most suitable after 4 o'clock. If it is in the morning or noon, because the temperature is too high, it is not conducive to field management and the growth of radishes in the later stage. When thinning radish seedlings, try not to hurt the leaves of the seedlings, so as not to cause bacterial infection and unnecessary diseases due to the presence of wounds.

Divided seedlings: Generally, seedlings need to be spaced at least 2-3 times in production, which cannot be completed at one time. Retain strong seedlings:

Keep the strong Huaizhi radish seedlings, and pull out the weak, infected with pests and diseases, and wilted seedlings. The principle of seedlings: maintain the principle of early seedlings, divided seedlings, and late seedlings.

Precautions: It is most suitable for seedlings after 4 o'clock on a sunny day.

1. Divided seedlings

Radish seedlings are not completed at one time, generally the production of at least 2-3 seedlings, the first seedling Nomei carrying time in the first true leaf, the second seedling in the 2-3 true leaves, the third seedling for the seedlings to grow 5-6 true leaves.

2. Keep strong seedlings

When the radish seedlings are set and the seedlings are fixed, the strong seedlings are retained, and the seedlings that grow weakly, are infected with pests and diseases, and are yellow and wilted, under normal circumstances, large and medium-sized varieties can only leave 4000-5000 plants per mu, while small radish varieties can leave about 8000 plants per mu.

3. The principle of seedlings

The principle of radish seedlings is early seedlings, sub-seedlings, late seedlings, after the end of radish sowing, if the soil fertility is relatively sufficient, the temperature is suitable, and the seedlings grow rapidly after being unearthed, at this time it is necessary to carry out the seedlings in time, and remove the deformed seedlings in time.

4. Precautions

When the radish seedlings are thinned, the first seedling and the second seedling should be separated by about 7-10 days, pay attention to the uprooting of one plant at a time, can not pull out all of them, and the seedling time is best selected in the evening on a cloudy or sunny day, after 4 o'clock is the most appropriate.

White radish is usually seeded, generally sowing up to about 10 grains per sow, after the emergence of seedlings, after the true leaves are born, they will be affected by too dense growth, so they need to pull out the excess seedlings, but because the radish seedlings are very susceptible to various pests and cause the lack of seedlings to break the air, so each will temporarily leave 2-3 seedlings--- called seedlings or sparse seedlings; When the seedlings are older (more than 2 pairs of true leaves) and the insect resistance is enhanced, the excess seedlings are pulled out again, leaving only one seedling per --- is called a fixed seedling.

The seedlings are pulled out of the seedlings that are too dense with white radish, and the seedlings are finally pulled out according to the planting density.

Summary. The selection of the sowing date of winter radish should be arranged in the suitable growing season as far as possible according to the requirements of various varieties for climatic conditions, especially the swelling period of fleshy roots should be arranged in the season with the most suitable temperature, so as to achieve the purpose of high quality and high yield. The suitable growth temperature of winter radish seedlings is 20 25 degrees, and the suitable temperature for succulent root expansion is 13 18 degrees, if sowing too late, the seedlings grow slowly because of low temperature, less green leaf area, low photosynthetic efficiency, less organic nutrients manufactured and accumulated, and when the fleshy quality is expanded, the swelling is slow due to low temperature, and finally leads to low yield.

Hello, I have seen your question, and I am sorting out the answer, please wait a moment The selection of the sowing period of winter radish should be arranged in the suitable growing season as much as possible according to the requirements of the climatic conditions of various varieties of hail and auspicious skin, especially the banquet during the swelling period of fleshy roots should be arranged in the season with the most suitable temperature, so as to achieve the purpose of high quality and high yield. The suitable growth temperature of winter radish seedlings is 20 25 degrees from the source, and the suitable temperature for succulent root expansion is 13 18 degrees, if the sowing is too late, the seedlings grow slowly because of low temperature, less green leaf area, low photosynthetic efficiency, less organic nutrients manufactured and accumulated, and when the flesh is expanded, it swells slowly due to low temperature, and finally leads to low yield.

Winter radish can not be sown too late, and the key mold beam can not be sown too early. Winter radish sown too early, due to high temperature, dry weather, aphids occur quickly, and virus diseases occur seriously, if the prevention and control is not effective, it will lead to the destruction of the whole field due to the harm of virus diseases. At the same time, due to the influence of high temperature and drought, it is easy to make the growth and development of the yard bush plant stunted, which affects the expansion of fleshy roots in the later stage, and even the phenomenon of early moss and hollowing.

It is best to start the radish seedlings in the morning after the sun comes out to dry the dew to avoid soft rot. The principle of seedlings: radish seedlings grow rapidly, and the principle of early seedlings, divided seedlings, and late seedlings should be followed.

1. Seedling method

When the first radish seedling has 2 to 3 leaves after germination, each nest leaves two radish seedlings with good condition, no deformity, lesions, and bright colors, and the second seedling leaves one radish seedling in good condition in each nest when the radish has 3 to 4 true leaves.

2. Seedling time

Radish seedlings are very delicate, the seedlings are best to start after the sun comes out in the morning to dry the dew, after the radish seedlings with dew are touched, they are easily injured, and they are easily infected with germs, resulting in hydration, and in severe cases, the leaves will rot one by one, and finally the whole plant disappears.

3. The principle of seedlings

Radish seedlings grow rapidly after being unearthed, and the seedlings should be in time, the principle is that the seedlings are in the morning, the seedlings are divided into stages, the seedlings are set late, the seedlings are small, and the roots of the seedlings will not be damaged when the seedlings are pulled, and the late seedlings can be reduced than the early seedlings due to the harm caused by a borer.

4. Field management

After the radish seedlings are completed, they can be watered once to maintain soil moisture at about 70%, promote the growth of seedlings, and also carry out reasonable topdressing, generally apply 15-20 kg of urea per mu, and use hole application or plant application.

The seedlings of radish grow rapidly after being unearthed, and the seedlings should be in time, and the principle is that the seedlings are in the morning, the seedlings are divided into stages, and the seedlings are set late.

Morning seedlings, small seedlings, when pulling seedlings will not damage the roots of the seedlings; Late seedlings can be less than early seedlings to reduce the lack of plants caused by the harm of a borer. In production, seedlings are generally interspersed 2-3 times. The first seedling thinning is carried out at the first true leaf, and weak seedlings, pathogens, deformed seedlings and seedlings that do not have the characteristics of the original variety are removed.

When there are 2-3 true leaves, the seedlings are thinned for the second time. "Big belly break"When each hole selects and retains a robust seedling with the characteristics of the original variety, that is, the fixed seedling, and the rest is pulled out, leaving 4000-5000 seedlings of large and medium-sized varieties and 10,000 small varieties.