How to raise onions, how to raise onions How to raise onions

1) Land preparation. Since onions are shallow-rooted crops, we should choose a neutral sandy loam soil with flat land, easy drainage and irrigation, fertile soil, and no onions, garlic, and leeks for 2 consecutive years. After determining the planting site, we should apply about 2,000 kg of high-quality rotted farm fertilizer, 25 kg of diammonium and 15 kg of potassium sulfate.

2) Transplanting. Transplanting in early May, transplanting field is mainly in the way of furrowing, the size of the furrow is 120 cm 90 cm, the distance of the furrow is about 30 cm, and then it should be covered with black mulch film in time, which is not only conducive to heat preservation and moisturizing, but also can avoid grass shortage. When planting onions, whether we use high or low furrows should depend on the terrain.

Areas with high terrain should be built with low furrows, and areas with low terrain should be built with high furrows, which can be conducive to water conservation and drought prevention. Generally, the row spacing of the plant is 10 cm to 15 cm, and the depth of planting is 2-3 cm, so it is advisable to leave the growth point on the ground surface. After transplanting, we need to water in time to facilitate the slow seedling of onions.

3) Management. The seedling stage is slow within 20 days after onion planting, and the germination stage is 30 days after planting to before balling. During these periods, it is necessary to ensure sufficient water in time to ensure vegetative growth, otherwise the final yield will be affected.

Irrigation during the growth period of onions should be mainly in the morning and evening, in order to keep the soil moist as the principle. After the onion reaches the clumping stage, the water requirements of the plants become higher, and the soil should be kept moist frequently. If there is a lack of water, it will cause premature senescence of the plant, resulting in reduced yield or even no production, and watering can be stopped about 15 days before the onion harvest, otherwise it will cause the moisture content to be too high during the storage period and easy to rot.

After the onion is planted and the seedlings are slowed down, 15 kg of urea can be applied to one acre of land at the seedling stage. In the 40 days after planting, the growth of onions accelerates, entering the rapid growth period, in order to ensure the needs of growth, we should top 30 kg of urea, 15 kg of potassium sulfate. After the onion enters the swelling stage, 35 kg of urea and 15 kg of potassium sulfate should be applied.

During the whole field growth period, in order to control the damage of pests and diseases, spraying should be carried out every 7-10 days. Grass damage is mainly based on manual weeding, and the principle of not harming the roots of onions and not forming grass famine.

First, the maintenance method.

1. Temperature: Its cold-resistant nature is very high, so the general ambient temperature needs to be kept between 21 degrees and 27 degrees, and the temperature in winter needs to be kept at least above 7 degrees to prevent frostbite, and the high temperature in summer is not too high to reduce the occurrence of plant ulceration.

2. Watering: A lot of water is needed during the growth period, because this can make the plant grow more ideally, and the flesh is thicker and the juice is more, especially in summer, you need to pay attention to this, almost every morning and evening. In winter, it does not need to be watered often, and watering in moderation can make it survive the winter normally.

3. Light: The general light is within its tolerance range, do not worry about the risk of sunburn, of course, try to ensure that it has enough warm sunlight, so that its growth will be more vigorous, and the color will be more perfect.

4. Fertilization: It needs to absorb some trace elements during its growth, and this is also a necessary thing for its growth, so it needs to be given some compound fertilizer during the growth period, but pay attention to thin fertilizer and apply it frequently, not too much each time, otherwise it will burn the plant.

Second, breeding skills.

1. Reproduction: sowing and bulb propagation is the main way, sowing is carried out in spring, pay attention to temperature and watering after sowing, and wait until it grows three leaves for transplantation. Bulb propagation buries the head of the onion directly into the soil, then controls the watering and waits for it to sprout.

Of course, of these two methods, sowing is a method that can be planted on a large scale, and like bulbs, it is generally used in family farming.

2. Pruning: It does not need to be pruned, because its body shape is different from other plants, and the growth rate of branches and leaves is not very fast, so try not to prune, otherwise it will be counterproductive.

3. Problem diagnosis and treatment.

1. Disease: Purple spot disease will occur during fruit ripening, which will seriously affect the yield, so it is necessary to choose disease-free seeds when planting, and it is also necessary to use reduced humidity to prevent and control it.

1. Temperature: 13 to 25 degrees is the most suitable, which is in this range, which is more conducive to promoting the increase of its output. Moreover, it is a very adaptable plant to temperature, with a maximum temperature of 45 degrees Celsius and a minimum of minus 10 degrees Celsius in winter.

Therefore, it is generally not necessary to protect against the cold, but you need to pay a little attention in the northern winter.

2. Light: Green onions are neither shade-tolerant nor like strong light. Therefore, when the sunshine is not strong, you can let go of the envy in a place with good light, which is conducive to the improvement of the quality of green onions. When the sun is strong, you have to get shade.

3. Watering: Green onions are more drought tolerant, but it is not waterlogging-resistant. Because its leaves have a layer of wax on the surface, it is highly resistant to drought. Therefore, the watering should not be excessive. After the rain, the stagnant water in the field needs to be drained in time.

4. Fertilization: Onions like fertilizer, and all kinds of nutritional elements should be taken into account. In addition to the three main elements, some trace elements are also very important.

1. Soil: Shallots have a great demand for soil with good air permeability and poor water performance, and the heavy soil in the vegetable field at home is more suitable for planting, which can make the shallot better absorb and grow.

2. Moisture: It likes humidity and does not like drought, but its requirements for water volume are also higher and higher. The amount of water should not be too much, the soil layer should not be stuffy, and the slag should be too wet, a little moist can be, and the amount of water must be controlled.

3. Nutrients: Compost can be used when fertilizing, and fertilizer should not be sprinkled directly on the roots of shallots, which will burn the roots to rot, and sprinkle them on the soil far away from the shallots.

4. Temperature: The temperature of its growth is about 10 to 25 degrees Celsius, and it likes a refreshing environment. In the hot summer, it should be shaded to avoid high temperatures that affect growth.

In the spring of February and March every year, the onion seeds are soaked in clean water for about 10 12 hours, and then the loose and draining soil is selected, and the soil is disinfected with carbendazim and other agents, and the onion seeds are sown into the soil, the humidity of the air needs to be maintained, and the ambient temperature is controlled at about 20, and it can take root and germinate after waiting for a week.

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 only 10 12 hours or so, which can improve the survival rate of seeds, but also promote the seeds to take root and germinate quickly.

Every time you plant onions, you need to choose loose and drainable, highly 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, and cultivate it, which can prevent seeds from suffering from pests and diseases.

As for how to plant onions, you need to sow the seeds that have been treated and cultivated into the soil, cover the soil and a plastic film to maintain the humidity of the air, and then control the ambient temperature at about 20, put it in a cool and ventilated place, and wait for a week before the seeds will germinate.

The growth rate of onions is very fast, it is necessary to water and fertilize the onion in time, when it germinates and needs to be placed in the sun for maintenance, watered every 3 days, watered every rainy day, and applied rotten organic fertilizer every 10 days, so as to make the onion grow more vigorously.

To plant potted onions, you should use loose, fertile and well-drained soil as a cultivation medium, buy onion bulbs from the market, and then bury them in the potting soil, water them once after planting, apply thin fertilizer frequently during the growth period of potted onions, and maintain them in a sunny place every day, so that potted onions can grow vigorously.

1. Prepare the soil

If you want to plant potted onions, then you need to prepare the right soil first, it is best to use loose and fertile and well-drained soil to plant, which is most conducive to the growth of onions, the soil can be mixed with some base fertilizer, which can improve the fertility of the soil, and then put the soil into pots for planting.

2. Planting method

Buy onion bulbs from the market, remove the dry skin, and then bury them in the soil, pay attention to the need not to plant too deep, it is best to make its top exposed soil surface, which is conducive to the germination of onions, after planting well, you need to water appropriately, and it is most appropriate to keep the soil slightly moist.

3. Water and fertilizer management

Potted onions need to be maintained and managed after planting, and they need to apply water and fertilizer reasonably every day, and they need to be hydrated in time when the soil is dry, but they can not be watered too much, and when the potted onions grow, they should be applied some thin rotten liquid fertilizer, so that the onions can grow vigorously.

4. Sufficient light

When potted onions are cultivated, they also need to be given sufficient light, so they need to be maintained in a well-lit environment to facilitate their photosynthesis, but it should be noted that onions are not heat-resistant, so when planting in summer, they need to be shaded and cooled to avoid onions being exposed to the sun.

You can buy onions directly from the market, and there are a little roots underneath to make you laugh, just put the roots on the cup and touch some water, don't soak them all in the water, and then put them hungry in a sunny place, and change the water once a day to grow new roots. I guess it's an onion root tip experiment.