Scallion planting methods and time are as follows:

1, time to choose

The climatic environment of each region is different, planting time is also different, onions like relatively cool environment, has a very good frost resistance, even for seedlings, it is also able to withstand -7 ℃ low temperature! When the temperature is higher than 26 ℃ it will be dormant, higher than 30 ℃ leaves will die, so the planting time is generally for the fall, most areas are cultivated in the open ground in early September, planting time for the middle to late October to early November between.

2, sowing seedlings

Sowing can be used in strip sowing or sowing method, the seeds should be sown evenly, a hectare of seed amount of 1.8-2.25kg, the actual planting, according to the germination rate of the appropriate increase or decrease in the amount of seed. Seedlings can emerge in 7-10 days after planting, when most of the seeds can be properly irrigated after seedling emergence, and after growing to 2 leaves, it is necessary to carry out mid-tillage weeding and fertilizer, and irrigation, usually 10 days of watering once.

3, land preparation and fertilization

Deeply turn over the land at least 20cm, level the land, and apply sufficient basal fertilizer, which can be applied to rotted organic fertilizer, phosphorus-potassium composite fertilizer, and diammonium. The planting is suitable for flat beds, the width of the beds should be decided according to the film, the width of 0.9-1.2m, the width of the furrow is 0.4m. watering should be done before covering the film, and the mulching film can increase the low temperature, which can improve the yield.

4, planting

In the planting, to control the depth of planting, to not bury the heart leaves, do not fall seedling shall prevail, in the planting of seedlings, to be planted straight, roughly the depth of 2cm, so that the soil and the roots of the close combination of, if planted too deep, it will affect the bulb expansion. After planting to water a planting water, watering to not pour seedlings do not accumulate water shall prevail, when growing new leaves and watering again.