Summary of autumn fertilization techniques for green onions: What fertilizers are used for autumn onions?
Fertilizer technique for autumn onion planting techniques
During the period from Liqiu to Bailu, the principle of watering is “light pouring, pouring in the morning and eveningâ€, combined with watering and topdressing fertilizer, using 1500-2000 kg of decomposed farmyard manure, 20-25 kg of superphosphate, potassium sulfate 10 kg, promote the rapid development of the leaves.
After the Bailu Festival, the weather is cool, the temperature difference between day and night increases, and the green onion enters the onion growth period. It is a key period for the formation of green onion and a key period for the management of fertilizer and water. It should be combined with watering to apply the “function of the tree†twice, each time. Apply 15-20 kg of urea to 10-15 kg of potassium sulphate, apply it to the line, and water it after shallow cultivating. The principle of watering is “deep pouring, re-castingâ€, and the soil is often kept moist to meet the needs of green growth.
After the frost, the weather is getting colder, the leaf body grows more slowly, the leaf water transpiration is reduced, and the watering should be gradually reduced. The watering should be stopped 5-7 days before harvest, which is conducive to harvesting and transportation.
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