[water onions] how should water onions be cultured

Water onion is a plant species belonging to Cyperaceae, which is very similar to edible green onion, but it is not edible. Perhaps some friends do not have a special understanding of water onions. Today, I will give you a brief introduction. Let's learn about it together.

What is onion?

Spring onion is a perennial perennial herb of Cyperaceae. It is 1-2 meters high and its stem is tall and straight. It is very similar to edible green onion, but it is not edible. Often grows in lakes, watersides, shallow ponds, swamps or wetland grass. The aboveground parts of spring onions can be used as medicine, which has the effect of promoting diuresis and reducing swelling.

What are the effects of onions?

1. Spring onions stand upright, beautiful and strange color, elegant, ornamental value is better than green leaves. It is the most suitable scenic spot for lake and pool water. Water onions with flowers and leaves are not only good waterscape flowers, but also can be watched in pots. Cutting stems can be used as flower arrangement materials.

two。 Water onion not only has a good ornamental effect, but also can purify the water environment. It can absorb nitrogen, phosphorus and other nutrient elements in the bottom sludge and improve the eutrophication of water, so as to purify the water body.

3. Spring onion also has a certain medicinal value, its stem can be used as medicine, it has the effect of dehumidification and diuresis and eliminating edema. In addition, the stems of spring onions can be used as textile materials or papermaking materials.

Planting method of water onion

1. Sowing and raising seedlings

Water onion avoid continuous cropping, sowing time is February, generally sowing in the form of sowing. The optimum germination temperature of spring onion seeds is about 18 ℃, and the seedlings emerge 5-6 days after sowing. Do not water the cotyledons before straightening, so as not to cause topsoil to harden. After the Qingming Festival, the seedlings began to grow, it is necessary to strengthen fertilizer and water management, promote growth, seedling stage 50-100 days.

2. Planting and row spacing

Spring onions can be transplanted and planted from April to May. In order to facilitate management, it is best to plant them by grades.

3. Reasonable intercropping and field management

After planting, reasonable intercropping can be carried out, which can not only save seedling land and increase yield, but also reduce the impact of rainstorm, prevent the loss of fertile soil, keep moisture and cool down during high temperature, and promote crops to grow normally in adverse environment.

4. Planting management of spring onions.

Spring onions like drier air environment, overcast and rainy days are too long, easy to be infected by bacteria. For fear of rain, keep the leaves dry at night. The optimum air relative humidity is 40-60%.

Spring onions like cool climate, avoid extreme heat, frost and cold resistance. The requirement of winter temperature is not very strict, as long as it can survive the winter safely without frost, it dies when the temperature is more than 30 ℃ in late spring and early summer, and the most suitable growth temperature is 15-25 ℃. Try to sow seeds in autumn and winter to avoid high temperatures in summer.

When aquaculture, we should pay attention to ensure that the light is sufficient, and pay attention to shading in summer. In addition, spring onions have more requirements for fertilizer and water, and fertilization should follow the principle of "light fertilizer applied frequently, less and more times, and complete nutrition", and watering should follow the principle of "dry and wet, dry and thoroughly, no dry, no watering". Attention should be paid to water control and fertilizer control when breeding in winter.

5. Off-season growth of onions.

The stem and stem of water onion is a commonly used material in flower arrangement. In order to meet people's needs of flower arrangement, breeding water onion often makes it grow out of season. At this time, the following points should be paid attention to: the growth temperature of water onion should be controlled at first low and then high. Watering should not be too much, to ensure that water onions can receive about 4 hours of light every day, but also to its appropriate fertilization.

This is the end of the introduction of water onions. I believe that after reading it, everyone will have a certain understanding of water onions. If you like this plant very much, you can also try to grow it yourself.