When is onion suitable for planting When and how to grow onions

The best time to sow onions is in early to mid-September.

How to grow onions:

1. Sowing date and sowing amount.

Suitable sowing period is the key to cultivating strong seedlings, sowing too early, large seedlings, easy to moss after wintering, late sowing seedlings are weak, poor cold resistance, and phosphorus stems are small, and the yield is low. It is best to carry out germination inspection before sowing. Under normal conditions, the seedbed sowing rate per mu is 4 5 kg.

2. Furrow and fertilization.

The furrow is high, the furrow width is 27cm, the furrow surface is leveled with 15kg of phosphorus and calcium per mu, and the well-decomposed organic soil miscellaneous fertilizer is 4 square meters per mu as base fertilizer, and the fast-acting nitrogen fertilizer is sprinkled with watering after emergence, and 10kg of urea is applied per mu.

3. Underground pest control.

There is 5kg of phosphorus per mu, which is evenly turned into the soil in combination with land preparation, and leveled finely.

4. Sowing. After the furrow surface is leveled, water it first, and then spread it evenly. Cover with nutrient soil to ensure that the seedlings are sown. If the moisture can not meet the requirements of seedling emergence after sowing, you can use a watering can to spray water to promote seedling emergence, or you can sow after germination.

5. Emergence. After the emergence of seedlings, attention should be paid to the prevention and control of mildew and blight. The method is to spray 150 grams of 50% carbendazim or 40% chlorothalonil per mu and 30 40kg of water.

Onions, generally sown seedlings in the open field at the end of September and mid-October, the seedling period is about 40-50 days. Soak the seeds with warm water for 24 hours before sowing, mix the crushed soil evenly after drying, sow 70 75 grams per mu, and cover it with fine soil after sowing. Then cover with weeds to prevent rain erosion and direct sunlight, and remove weeds after the seedlings are unearthed.

Onion sowing should be sown at the right time according to the local climate characteristics. Generally, sowing too early, the seedlings grow large before winter, and it is easy to sprout in the second year, which also consumes nutrients and reduces yield and quality. If the sowing is too late, the seedlings are small, the root growth and development are stunted, and it is easy to freeze to death in the cold winter.

The suitable planting period is in mid-November and early December, and the seedlings have 3 5 leaves before planting, with a plant height of 15 20 cm and a false stem thickness of cm, which is a suitable seedling age. Make the seedlings in"The Great Cold"Grows rapidly before and is not subject to frost damage.

Onion is a vegetable that we are familiar with, its edible value is also relatively high, and the planting of onions is also more common in our country, with high cultivation value, we need to pay attention to daily cultivation management, so, when is the onion planted? What are the conditions for growing onions? Let's find out.

Onion planting time.

In general, onions are sown in mid-September, no earlier than September 1 and no later than October 15. All sowing at the right time is generally planted in early to mid-November, no later than November 25.

Due to the different climatic conditions in different places, the suitable sowing time is also different. Because shallots like cold environmental conditions and have strong frost resistance, seedlings can tolerate low temperatures of -7, and shallots enter dormancy when they are above 26. 30 The leaves will die when they are up.

The period of low temperature required for the differentiation of shallots flower buds varies from variety to variety. Generally, varieties can pass the vernalization stage after 50-60 days under 2-5 conditions. The low temperature time required for large seedlings to pass vernalization is short, the low temperature time for small seedlings is long, and it is not easy for seedlings to pass the vernalization stage if they are too small.

Therefore, some varieties are easy to sprout, while others are not easy to sprout.

Most varieties of shallots in Shandong Province are sown in the open field in early September, and the seedling period is about 40-50 days. Sowing too early, the seedlings grow large before winter, and they are easy to sprout in the second year, which also consumes nutrients and reduces yield and quality. Sowing is late, the seedlings are small, the root growth and development is stunted, and it is easy to freeze to death in the cold winter.

The suitable planting period is from mid to late October to early November, and the seedlings have 3-5 leaves before planting, with a plant height of 15-20 cm and a false stem thickness of centimeters, which is a suitable seedling age.

The seedling furrow of shallots should be preferably fertile sandy loam soil, and the base fertilizer of the seedbed should not be too much to avoid the seedlings from growing. Plough the land after the basal fertilizer is spread. Mix the soil and fertilizer evenly, hug the ground, and make a flat furrow with a width of meters.

Sow 4-5 kg of seeds on one acre of seedling land (600-700 grams of seeds per 100 square meters). It can be used for planting seedlings on 8-12 acres of land. To plant one acre of shallots, 150 grams of seeds are required.

The application period of shallot seeds stored at room temperature is only one year, so the seed germination test or seed germination should be carried out before sowing, and the seeds should be sown after germination. It can also be used before sowing with 25 grams of Tianda 2116 (soaking type) to 25 kilograms of warm water, soaking seeds for 3-5 hours, removing and washing and then germinating and sowing. After sowing, cover with soil centimeters.

In order to maintain the humidity of the furrow surface, it can also be covered with mulch film or shade net after sowing, and removed after the emergence of seedlings, so that the seedlings can grow robustly.

After sowing shallots, the furrow surface needs to be kept moist to prevent the ground from knotting, after the emergence of seedlings such as the ground is too dry, you can properly water, seedlings grow to 2-3 leaves, you need to pull weeds, water, seedlings in time. Keep the seedling spacing 3-4 cm to control the seedling growth. Seedling furrows generally do not need to be topdressed.

Before planting, the foliar spray of potassium dihydrogen phosphate in fertile leaves is 800-1000 times to promote root and seedling growth.

Hello, the onion planting time can be selected between September and October, the most suitable time is recommended after the middle of September, when the weather is cool in most areas and the germination rate is higher. If planted earlier, the temperature is higher and germination is slower.

Onion planting: 1Before sowing onion seeds, it is best to turn them over, then soak them in warm water at 50 degrees, and at the same time knead to remove the waxy layer, and then you can raise seedlings.

2.To plant onions in seedlings, organic fertilizer should be sprinkled, and compound fertilizer can be properly mixed. After spreading fertilizer, you can turn the soil deep and level the land.

The sowing can be sown in strips, the row spacing is about ten centimeters, the depth of the furrow is three centimeters, and the seeds are evenly sown, and the top can be covered with thin soil. Then simply irrigate, do not water too thoroughly, and wait for the emergence of seedlings, and then water again. At the same time, spray some drugs to prevent diseases in time.

3.The planted onion seedlings grow until October, and after reaching a certain height, they are ready for planting. In the northern region, foot fertilizer should also be applied before planting, and attention should be paid to increasing the proportion of organic fertilizer.

To level the land, you can sprinkle phosphine to prevent pests. At the same time, spray herbicide, then cover the film, prick the hole with a sharp object, the depth is about three or four centimeters, carefully plant the seedlings, and then water them permeable, and soon the seedlings can survive. At this time, there is an operation essentials is to use a film, which can keep warm and moisturize, increase the ground temperature, and effectively promote the growth of seedlings.

4.In the spring of the next year, it is necessary to irrigate the green water in a timely manner, and to use compound fertilizer, so that the seedlings can be lifted and the growth can be promoted. In addition, it is also necessary to pay attention to the control of nitrogen fertilizer to avoid overgrowth.

After the first watering is completed, the water should be properly controlled, the time is about half a month, and the onion leaves are dark green and the mesophyll becomes thicker, you can stop the water control and water normally. Water control can prevent overgrowth, good for rooting, good for accumulating nutrients, and good for false bulb expansion. During the swelling period of the pseudobulb, combined with watering, diammonium and an appropriate amount of potassium sulfate are used.

1. Onions are generally sown in a warm and dry environment with a temperature of 15 20, and can be sown in September and October in autumn, and the survival rate is the highest, but if it is in the hot areas of the south, then the seeds of onions need to be delayed for a month of sowing, and the seeds need to be soaked before sowing, and then the seeds are sown into the soil, waiting for them to take root and germinate.

2. Planting method:

1) Soak for germination.

Onions can be sown in spring 2 to 3 months, first select larger excellent onion seeds, and then soak the seeds in clean water, need to soak for about 10 12 hours, which can improve the survival rate of seeds, but also promote the seeds to take root and germinate quickly.

2) Soil disinfection.

Every time you plant onions, you need to choose loose and drainable, fertile soil, usually we can plant onions into humus soil, before sowing onions, we also need to spray carbendazim on the soil, disinfect the humus soil, can prevent seeds from suffering from pests and diseases.

3) Sow germination.

Sow the treated seeds into the soil, cover the soil with a plastic film to keep the air moist, then control the ambient temperature at about 20, put it in a cool and ventilated place, and wait for a week for the seeds to germinate.

4) Planting management.

The growth rate of onions is very fast, it is necessary to water and fertilize the onion in time, when it germinates, it needs to be placed in the sunlight of Kai Raid liquid for maintenance, watering every 3 days, watering can be stopped on rainy days, and applying rotten organic fertilizer every 10 days, so as to make the onion grow more vigorously.

1. The best time to plant infiltration onions is: the sowing time of onions is generally in autumn, the best in mid to early September, and transplanting can only be carried out when planting for two months. The sowing of onions is mainly sowing or furrow sowing, so it will be more chaotic after the seedlings emerge, and the seedlings should be in time.

In late March and early April, pay attention to watering back.

2. There are many varieties of onions, and the planting time of different varieties will naturally vary, but the approximate time is the same, mostly concentrated around the beginning of September, which is probably the time when selling and selling white dew, the temperature and climate at this time are more conducive to the growth of onions, and it is also convenient to manage. The planting method is simple, directly use the sowing method on the line, it is recommended to promote germination first, so that the germination rate will be higher, soak the seeds in clean water for 12 hours, dry and put them in an environment of about 23 degrees, and wait for the bud to be sown when it is dewed, which will improve the probability of germination. When the seedlings grow four true leaves, the value should be set in time, and the plant row spacing should be carried out according to 20 by 15 cm.

In addition, it is necessary to pay attention to the management of the later stage. Especially in terms of fertilizer and water, as well as pest and disease control.

Onions are grown in early to mid-September. The appropriate sowing period is the key to cultivating the seedlings of the Zhuangjiao tribe, sowing too early, the seedlings are large, it is easy to draw moss after wintering, the late-sown seedlings are weak, the cold resistance is poor, and the phosphorus stem is small, and the yield is low. Taking the Huanghuai River Basin as an example, the best sowing date is early to mid-September.

Onion Cultivation Techniques:

1. Site selection. Onions are more adaptable, but due to the lack of nutrient absorption at the roots of onions. Therefore, when planting onions, we should choose fertile and loose soil to promote the growth and development of roots.

The soil's ability to retain fertilizer and water and permeability should not be too bad. And onions need a lot of light to grow, so choose an area with plenty of light.

2. Land preparation. After choosing the onion planting soil, it is necessary to carry out the work of cultivating the soil, loosening the soil and exposing it to the sun for 5-7 days to eliminate germs and parasites in the soil. Soil preparation is generally carried out together with basal fertilization, with the aim of improving the fertility of the soil and enhancing the growth of onion seedlings.

3. Base fertilizer. The base fertilizer should be applied together with the land preparation, and the base fertilizer can be fully decomposed farmhouse fertilizer, but an appropriate amount of phosphorus, potassium and calcium and other elements should be added. When applying basal fertilizer, mix the basal fertilizer with the soil evenly.

Wait until the onion seedlings are unearthed and apply nitrogen fertilizer in time to improve the growth rate of the seedlings.

4. Sowing. Correct sowing time is the key to ensure the normal growth of seedlings, improper sowing time will lead to onion growth stunted, affecting the yield and quality of onions. The time of sowing can be in mid-September, and wait until the seedlings are unearthed to check the seedlings in time to replenish the seedlings.

After sowing, cover about centimeters of nutrient soil to ensure that the seedlings are ready after unearthing.

5. Colonization. When about 80% of the seedlings are out of the soil, you can start transplanting and planting, but you should check the condition of the seedlings when planting. Filter some seedlings that are weak, overgrown, and vigorous.

Seedlings with consistent specifications are planted together, which is convenient for later management and can also ensure the growth of seedlings.

6. Management. After the seedlings are planted, it is necessary to pay attention to management, prevent the appearance of downy mildew and wilt and other germs, and do a good job in the prevention and control of diseases. During the growth of seedlings, it is necessary to control the amount of watering to ensure that it will not affect the growth of seedlings but can provide the water needed for growth.

Onions are best planted in the fall, between September and October, and the best time is after mid-September. Because at this time, the weather is relatively cool in most areas, and if you plant onions at this time, the germination rate of onions will be relatively high. If you plant onions in advance when the temperature is relatively high, the germination rate of onions will be slower.

Before we start planting onions, it is best to dig up the ground where we are going to plant onions, which will make the soil more loose. In addition, we can also add some fertilizer appropriately, which can also help the onion grow better. Another point to note is that if you use onion seeds for sowing, it is better to turn them over before sowing, and then soak them in warm water at about 50 degrees Celsius, while gently rubbing off the waxy layer of the seeds.

Onions prefer to grow in warm, dry environments, but they are not very tolerant to high temperatures, and the most suitable temperature is between 15 and 25. When planting, we can also sprinkle some organic fertilizer or mix some compound fertilizer. We can also do strip sowing at the time of sowing, with a row spacing of about 10 cm and a furrow depth of about three cm, and then we can spread the seeds evenly.

Then we simply water, don't water too much and too thoroughly, wait until the onion seedlings emerge before the next watering, and at the same time you can spray some drugs to prevent the onion from getting sick.

When the onion seedlings grow to around October, we can plant them, because by this time the onion seedlings have reached a certain height. When planting, we should pay attention to the fact that we must apply plantar fertilizer to the onion, and at the same time, we can also spray some herbicides. Then water it again and soon the seedlings will grow very well.

Onions also prefer loose soil, so we need to level the soil when planting to keep the soil in a loose state.