1. The planting time of green onions in the north is 5438+00 in June every year. Most farmers sow in autumn, and the climate in the north is relatively cold. It is necessary to choose cold-resistant green onion seeds for planting, so that the planted green onions can safely overwinter and ensure the spring bolting of green onions.

2. Before sowing, level the plot, then level the ridge and fill it with water. After the water infiltration is completed, the seeds should be mixed with sand and evenly spread twice in the border to ensure uniform distribution. This method of watering before sowing can ensure water supply, neat seedling emergence and high seedling rate. In another week or so, the green onions will emerge, and then nitrogen fertilizer will be applied once, and chemical agents such as artificial dew-free Su Jing will be sprayed to avoid persistent diseases and promote the rapid growth of green onion seedlings.