Soilless cultivation refers to the cultivation method of irrigating with nutrient solution without using natural soil. In vegetable production, it has the advantages of high yield, early maturity, water saving, light disease, and can produce high-quality vegetables without pollution. A soilless cultivation method is now introduced.
Use a flower pot or wooden trough with a depth of 18 to 20 cm and install river sand with a depth of 1 to 2 cm. Wash the river sand with a new high-fat film to isolate the virus infection to prevent bacteria. Select the roots of open field leeks for more than two years, cut off the old roots and leaves, leave the shortened stems and roots, and transplant them into flower pots. The line spacing is about 3.3 cm. After planting, water was applied once, and after the new roots were emitted, a new high-fat film was sprayed with a nutrient solution. Generally, water was poured once every four times and a new high-fat film was sprayed with a nutrient solution. Water in spring, summer, and autumn every 1 to 2 days, and in winter 3 to 5 days. On rainy days, no nutrient solution is poured in the afternoon and evening. Yellow leaves are poured more and black leaves are less poured.
Nutrient solution formula: 15 g of urea, 2.25 g of potassium dihydrogen phosphate, 15 kg of water, poured on 1.5 square meters.
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