When and when are green onion seedlings sown? What temperature is the right temperature?

Green onions are sown and seedlings are raised. There are many varieties of green onions, and they are all grown at different times. Green onions are planted in spring and harvested in autumn, seedlings are raised from March to April, planted in May and June, and harvested from October to December.

This green onion grows fast and is resistant to heat and rain. Spring planting and winter harvest varieties, seedlings from March to May, planting from June to July, and harvesting from December to January of the following year, this green onion is characterized by good commerciality, strong low temperature resistance, and high yield.

The most suitable temperature for green onion seed germination is 18 degrees Celsius, generally six to eight days after sowing seedlings can emerge, more than half of the seedlings can be removed after the mulch, and then according to the soil dry and wet conditions, watering once or twice, water can not be too much, to avoid seedlings to grow. Top dressing once or twice during the whole seedling stage, mainly with fast-acting compound fertilizer, can make the seedlings grow rapidly.

In general, it is necessary to sow seeds in March and April, which is mainly determined according to the specific temperature, at least around 20.

Green onions are generally from September to October every year, and the temperature is best around 20 degrees, so the seedlings raised are very good, the survival rate is very high, and the growth is also very good.

Green onion seeds should be planted in spring, summer, and autumn.

Among them, spring sowing is between April and May; Summer sowing is between June and July; Autumn planting is done around October.

Green onion seeds like a warm environment, the climate temperature in these time periods is more suitable, after planting can germinate well, and it is more convenient to manage. The sowing method is very simple, directly sprinkle its seeds evenly on the surface of the soil, and cover it with thin soil.

Onion planting environment:

1. Moisture and temperature.

Compared with other vegetables, green onions are drought tolerant and waterlogging. However, if you want to have a high yield, you still need to ensure a suitable temperature range. Most green onions have very few root hairs, so their ability to absorb water and fertilizer will be weaker.

Moreover, its roots are basically distributed on the surface of the soil, although it prefers moist conditions, but it is afraid of too much water, so the management of water is still relatively strict. It is necessary to keep it moist without excessive water accumulation, so it is recommended to avoid clayey soils and low-lying plots as much as possible.

2. Lighting.

The requirements in terms of light are not very strict, because the onions are planted relatively densely, and the onions have a good ability to receive light under this growing condition. However, it should be noted that the light should not be too strong, otherwise it will accelerate the aging of the leaves and reduce the value of the food.

Green onion seeds are sown in September to October.

Green onions are most suitable for sowing seedlings in September and October in autumn, and under normal circumstances, they can grow to 8-10 cm tall or grow to 2 leaves and 1 heart before winter, which is conducive to smooth wintering. The sowing time is too early, the seedlings grow too fast before winter, and it is easy to pull out too early in the spring of the second year and affect the yield, the sowing time is too late, the seedlings grow weak before winter, the nutrient accumulated temperature is insufficient, and the trees are easy to freeze to death during winter.

The method of sowing and raising seedlings of green onions

1. Prepare the sowing field.

It is best to choose the sandy loam land of green onion seedling land with flat terrain, ventilation to the sun, close to the water source, thick quality, good drainage, and the plot is best to have never planted onions, garlic and leeks and other crops in the past 3 years, and at the same time require seedlings to be free of diseases and pests.

2. Selection and treatment of seeds.

1) In the selection of green onion seedlings, varieties with bright color, long green onion white, good cold resistance, strong disease resistance and lodging resistance, and good stable yield should be selected.

2) After the seeds are selected, it is best to soak the seeds in warm water before sowing (which can improve the germination and emergence speed of green onions), or use potassium permanganate, carbendazim, etc. for disinfection (which can reduce the pests and diseases of green onions at the seedling stage), and then wrap the seeds with clean wet gauze and put them in an environment of about 20 degrees for moisturizing and heat preservation to promote germination, and wait until most of the seeds are exposed before you can start sowing.

1. Green onions are suitable for sowing seedlings in September and October in autumn, under normal circumstances, they can grow to 8-10 cm high or grow to 2 leaves and 1 heart before winter, which is conducive to smooth wintering.

2. The sowing time is too early, the seedlings grow too fast before winter, and it is easy to pull the sprouts too early in the spring of the second year and affect the yield, the sowing time is too late, the seedlings grow weak before the winter, the nutrient temperature is insufficient, and the trees are easy to freeze to death during wintering.

According to their own needs to choose the corresponding excellent varieties, mu needs about 2 3 pounds of seeds. Spring sowing seedlings, generally carried out in April, depending on the moisture for watering, watering the bottom of the water, after the water seeps dry, can be sown, the sowing must be even, and then covered with a layer of fine soil. It's really good.

According to this method, it is refined and meticulous. Because of the lack of cow dung cover. Poor humidity.

Emergence is very scarce. Annoyed and annoyed, in advance, between the potatoes and chrysanthemum seeds, green onion seeds sprinkled at the same time. Management, just chrysanthemum regardless of green onions.

Artemisia chrysanthemum out of green onions immediately after, eat chrysanthemum green onion seedlings. <>

According to the size of the green onions you plant, choose a good plot to make a seedbed. The seedbed that needs to be planted with a large area is relatively large, and the planting is less, and vice versa. Farmers can plan their own seedbeds.

Green onions are cold-tolerant and drought-tolerant, widely adaptable vegetables, which have different requirements for temperature in different growth periods, and have low requirements for light, so they are suitable for dense planting. The climate is cool in spring and autumn, and the sunshine is abundant, so the most suitable season for the growth of green onions is autumn and winter. Seedbed preparation, choose a plot with loose and fertile soil for 2 to 3 years and no onion and garlic.

After the harvest of the previous crop, the field is cleared. Shallow tillage once, 4,000 to 5,000 kg of rotting organic fertilizer per mu, and then 25 cm deep and rake flat. Do width 120 cm, length 15.

The best solar term for green onion seedlings in autumn is generally around the autumn equinox, in the month is generally around the beginning of September to early October, sowing too early or too late is not conducive to cultivating the healthy seedlings of the appropriate age that can smoothly overwinter, sowing too early onion seedlings are easy to sow in the spring of the following year, green onions can be sown with dry seeds, but the seeds must be new seeds of the year, and the purchased seeds are best to do a germination test first. Soaking and disinfecting seeds before sowing can improve the germination rate and emergence rate, make the seedlings grow neatly, and prevent diseases. The best solar term for green onion seedlings in autumn is generally around the white dew to the autumn equinox, and it is generally around the beginning of September to early October in the month, sowing too early or too late is not conducive to cultivating healthy seedlings of the appropriate age that can smoothly overwinter, and sowing green onion seedlings too early is easy in the spring of the following year.

Green onions have strong cold and heat resistance, and in the vegetative growth period, cool climatic conditions are appropriate. The minimum temperature for seed germination is 4 5 , and the germination is rapid at a suitable temperature of 13 20 and can be unearthed in 7 10 days. The suitable temperature for plant growth is 20 25, higher than 25 The plant is weak, the leaf body is yellow, and it is also prone to disease.

The aboveground parts are also not affected by freezing at a low temperature of -10. Plants at the seedling stage and at the white formation stage can safely survive the harsh winter of -30 under the protection of soil and snow. Therefore, in alpine regions, it is safe to overwinter without covering.

The green onion seedlings are too small and have low cold tolerance; Plants that have been exercised or dormant have significantly improved their ability to tolerate cold. Therefore, it is very important to grasp the sowing date for autumn sowing seedlings, sowing early, the seedlings are larger during wintering, and the budding rate is high; Sowing too late, the seedlings are small during overwintering, have low cold resistance, and are prone to death.

1. Do not re-stubble. "Onion and leek, don't meet. "Green onions should not be repeated, and they should be planted on plots that have not been planted with green onions, leeks and garlic for 3-4 years.

2. It is generally sown between white dew and autumn equinox. Sowing too late, the green onion seedlings are weak, the seedlings are easy to die in winter, the growth and development is slow after returning to green in the next year, which affects the yield and quality of sowing too early, easy to vernalize, and the second spring sprouts are not suitable for transplanting green onion seedlings. Green onions are resistant to both cold and heat during their vegetative growth.

The temperature range for effective growth is 7-35 degrees:. The seeds germinate slowly at a temperature of 2 3 degrees Celsius, and germinate quickly at a temperature of 13 to 20 degrees Celsius, and they can be unearthed in 7 to 10 days.

The suitable temperature for plant growth is 19-25 degrees.

Green onions are sown in September in autumn, thawed in spring, and sown in late July to early August in summer.

1. Autumn planting time

Sowing seeds in early September in the autumn of the following year, overwintering with seedlings, planting in early to mid-May of the following summer, harvesting before winter, overwintering in the cellar or open field, flowering in the spring of the third year, and harvesting seeds in the second season. The seedlings at the time of planting can be marketed as shallots from early May to late June, or they can be planted in flat furrows or planted into ditch shallots as autumn shallots before and after the beginning of summer, or as early spring shallots after wintering**.

2. Spring planting time

Sowing after thawing in early spring, as shallot** before the onset of hot summer, or harvested as dry onion or ditch onion ** in the year after planting. It can also be overwintered as a sage or as a seed plant.

3. Summer planting time

It is mostly sown from late July to early August, so it is also called the onion. The plants are larger when they overwinter that year. It is easy to complete the vernalization process, and the next spring germinates early and blooms quickly. Generally, it is marketed after receiving the horn onion.

Germination

After the green onion seeds are planted, they will generally germinate in about ten days, but the seeds must be treated well before planting. The specific method is to soak the seeds before sowing, which can improve the germination rate and emergence rate. Soak the seeds in clean water and stir for 10 minutes, remove the impurities of the seeds, and then put the seeds in warm water about 65 °C for 20 30 minutes, and stir constantly.

Or soak in potassium permanganate solution for 20 to 30 minutes, and then rinse with water to kill the germs on the surface of the seeds.