Planting method and time of scallion seeds
Planting method:
First, choose land and seeds.
1. Choose a plot with flat and fertile land, close to water source and convenient drainage, and apply 1500 kg of farm manure and 120 kg of NPK compound fertilizer as base fertilizer per mu, and at the same time apply 2.5 kg of carbofuran and 0.5 kg of carbendazim powder per mu to kill underground pests and germs, and plow and level the land shallowly.
2. Choose high-quality onion seeds for sowing, soak them in hot water at 50℃ for 2 minutes, and stir them constantly to avoid scalding, so as to disinfect and sterilize, then take them out, clean them and drain them for later use.
Second, sowing and transplanting
1, onion sowing time is generally from March to April, and autumn sowing can also be carried out from September to June. Pour water on the seedbed before sowing, and then sow directly. Generally, 6 seeds are sown in a square meter seedbed, and the covering soil is not more than 1cm, which will not affect the emergence of seedlings. After covering the soil, water is poured to keep the seeds combined with the soil, and then a layer of straw is lightly covered to keep warm and moist. Spacing seedlings in time after emergence, picking out weak seedlings and stunted seedlings.
2. Then cut off the fibrous roots and plant them in the ground, with the plant spacing of 8- 10 cm and the row spacing of 15-20 cm, and plant about 3 plants in holes with the planting depth of 3-4 cm.
Third, cultivate the soil in time.
Soil cultivation is an important measure to soften leaf sheaths, prevent lodging and improve the yield and quality of green onions. From beginning of autumn to before harvest, soil tillage is generally carried out for three times, and the first two times are combined with intertillage.
Fourth, fertilizer and water management.
1. After planting, water it once a day, and some roots will grow in about 1 week. Water once every three days after rooting to promote the rooting of seedlings. After half a month, onion seedlings basically grow normally. Water according to the wet and dry conditions of the soil, and water to keep the soil slightly wet.
2. Topdressing once a month after planting, urea 15-20kg, potassium sulfate 10- 15kg can be applied per mu, and water can be used together.