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After the White Dew Festival, the weather was cool and the temperature difference between day and night was increased. The green onion entered the light green growing period. It was a crucial period for the production of welsh onions and a key period for the management of fertilizer and water. It should be combined with watering to apply “gong liang†twice, each time. Mushi urea 15-20 kg, potassium sulfate 10-15 kg, topdressing between rows, shallow water after cultivator. The principle of watering is "diligence, heavy pouring," and the soil is often kept moist to meet the need for light green growth.
After the frost falls, the weather is getting cooler and cooler, the growth of the leaves is becoming slower, and the transpiration of the leaf surface is reduced. Watering should be gradually reduced. Watering should be stopped 5-7 days before harvest, which is conducive to harvesting and transportation.
Autumn onion fertilizer tips
During the period between Liqiu and Bailu, the principle of watering is “light pouring, morning and evening pouring,†combining watering to attack leaf fertilizer, using 1500-2000 kg of cooked farmyard fertilizer per mu, 20-25 kg of superphosphate, and potassium sulfate. 10 kg, promote the rapid development of leaf.