How to water onions in spring?

How to water onions in spring? Please instruct onions planted before winter to return to green water in spring and timely. Early watering will lower the temperature of the soil, which is not conducive to the growth of onions, and will inhibit the growth of plants too late, resulting in the phenomenon of dry tip of leaves. When onion bulbs begin to expand, water squatting seedlings should be controlled, and squatting time should be flexibly controlled according to soil, climate and plant growth status. When sandy soil or climate is dry, the squatting seedling period should be shortened appropriately. Clayey soil, low-lying and rainy soil should appropriately prolong the squatting seedling period. The aim is to promote the transformation from onion growth to bulb expansion, which usually takes about 10 days. It is generally believed that the mature tubular leaves of onions turn dark green, the mesophyll is thick, the waxy surface of the leaves increases, and the color of the heart leaves deepens, which is the sign of squatting seedlings at the end of this period. After squatting seedlings, generally watering every 5 days to promote the rapid expansion of the bulb, when there is a part of the plant lodging in the field, stop watering to avoid the bulb not resistant to storage after harvest. Click to get more onion planting techniques click to get more vegetable planting techniques