How to grow onions in water How to plant onions in water

Peel off the outer coat of the onion and cut off the roots a little.

Find a glass, preferably a transparent one, so that it is more ornamental. The mouth of the cup should be able to support the bottom of the onion just right, fill the cup with water, put the onion on the cup, and in the first week, make sure to change the water of the onion every day, and soon the bottom of the onion will grow roots.

<> about 10 days, we can see that the top of the onion has grown tender green shoots, at this time we can change the water every 3-4 days.

In order to promote the growth of onions, in addition to cultivating with water, we can also use fast rooting powder, which can promote the growth of onions faster.

In about 3 weeks, the onion has grown luxuriantly and can be placed on the dining table at home for decoration.

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1. Change the water frequently, cut off the dry and rotten roots, keep the water clear and sterile, the onion roots are coiled in water, and the bulbs are not soaked, so the roots will not rot.

2. Onions like sufficient light, and they must be maintained in full sunlight during hydroponics, which can not only make the leaves not grow but also bloom early.

The onion flowering period is in May, and phosphorus fertilizer should be added every half month during hydroponics in the early stage to allow the flower buds to be pregnant early. Ocean.

Green onions grow easily and can reach up to a meter in height. During hydroponics, you should often bask in the sun, and when the leaf height is 20cm, you should spray mequat to control the height, otherwise the height is too high and ugly.

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Method: 1. Select the whole onion as the material;

2. Prepare a container filled with water, cut off the fibrous roots of the onion and put it on the mouth of the container, and the water surface can touch the bottom of the onion

3. In the early stage of hydroponics, it is necessary to apply phosphate fertilizer every half month to make the flower buds early gergic

4. When the height of the blade reaches 20 cm, it is necessary to spray chlormequat to control the height

5. Hydroponics needs to be maintained in full sunshine, which can not only make the leaves not grow but also bloom early

6. Change the water frequently, cut off the dry and rotten roots, and keep the water clear without good cavity bacteria and socks.

In the early preparation, when hydroponic onions, the plastic bottle needs to be cut horizontally, and then the shallots should be cut from the root more than five centimetersIn the hydroponic method, a small hole needs to be dug in the middle of the foam board, and the roots of the green onion are buried in the foam board and put into a plastic bottleChange the water regularly, and when maintaining the onion in the later stage, you need to change the water every 2 3 days to ensure that the water quality is clean and hygienic.

Before cultivating shallots with water, prepare a transparent plastic bottle and grow strong seedlings, use scissors to cut the plastic bottle horizontally, keep only the lower part, and then cut the shallots from the root more than five centimeters, and only keep the lower part of the green onion for later use.

When hydroponics of green onions, you need to choose a foam board, dig a hole in the center, and then bury the roots of the green onion in the foam board, and then you can place the processed from the root down, place it in a plastic bottle, and inject non-polluting mineral water, and the water surface can be less than half of the plastic bottle.

In the process of hydroponic shallots, it is necessary to change the water regularly to avoid the growth of a large number of bacteria in the water and affect the normal growth of shallots. If tap water is used, it is necessary to let it stand for 2 to 3 days in advance, and then use it after the chlorine in the water is completely volatilized.

In the process of hydroponics, it needs to be placed in a sunny environment for maintenance, and given all-weather astigmatism to keep the leaves in a green growth state. When the light is too strong, it needs to be transferred to a astigmatism environment in time to avoid the strong light affecting the growth of the plant in the later stage.

How to raise onions in water:

1。It is best to use river water or rainwater. The tap water has been disinfected, and the microorganisms in the water have been killed, and the tap water is filtered, and most of the minerals in the water have been lost with the filter, so it is nutritionally impossible;

2。If you use self-made water, it is best to add some sandy soil, or prepare a nutrient solution to add it regularly;

3。Water is best to be changed regularly, when raised for a period of time, due to the absorption of plants and the natural evaporation of water, the water will become less, the concentration will become larger, the nutrients in the water have been absorbed almost, if you do not replace the water, the plant will be because the concentration of water is higher than the water concentration of the plant roots, so that the plant can not absorb water and nutrients, serious will cause the plant roots to lose water, the leaves become yellow or yellow, and slowly die.

Onion is a biennial herb belonging to the family Lycoris and Allium. Onions contain prostaglandin A, which can reduce peripheral vascular resistance and blood viscosity, which can be used to lower blood pressure, refresh the mind, relieve stress, and prevent colds.

In addition, onion can also remove oxygen free radicals in the body, enhance metabolism, anti-aging, prevent osteoporosis, and is a health food suitable for middle-aged and elderly people.

It is widely distributed in China and is cultivated in all parts of the north and south, and is one of the main vegetables in China. China's onion production areas mainly include Fujian, Shandong, Gansu, Inner Mongolia, Xinjiang and other places.

1. Planting: Shallots can be planted in early spring and autumn, but they are generally sown in spring, which can increase the survival rate of plants. The seeds of shallots are collected in February and carefully processed, the seedbed is deeply ploughed and disinfected and fertilized, and then it is ready for sowing.

The seed germination temperature of shallots should be kept at around 18 degrees Celsius. Generally, the seedlings emerge one week after sowing, and try not to water them three days before the emergence of seedlings, so as not to affect the soil compaction and affect the absorption of water by the seedlings.

2. Transplanting: April to May is the time period for seedling transplanting, and seedling management in terms of graded transplanting. 2-3 plants per hole when planting. When transplanting and planting, cylindrical wooden sticks can be pre-plugged, and the depth of transplanting is best to show the heart.

3. Water and fertilizer: shallots are a kind of aquatic plants that particularly like water and fertilizer, and when fertilizing, they can ensure that they have sufficient nutrients when applied in accordance with the principle of "thin fertilizer diligently, a small amount of water for many times, and complete nutrients". Try to control water and fertilizer during the winter months.

4. Temperature: Shallots like a cool growing environment, afraid of scorching heat, but resistant to frost. In winter, it can grow normally except for frost, and it can be generally placed indoors for breeding.

In the early summer, the temperature is generally above 30 degrees Celsius, but it is not suitable for the growth temperature of shallots, and it is better to keep it at 15-25 degrees Celsius as much as possible for the growth of shallots.

5. Humidity: Although the shallots grow in a cool environment, they like a dry air environment, and they are susceptible to disease attacks on rainy days, so they should keep an appropriate amount of humidity and dry leaves, of which the most suitable relative humidity is about 50%.