It is desirable to use topsoil with 13 to 16 cm of onions and garlic, turn over the sun, sifted and used. The excrement required to fully ferment and decompose, mainly pig manure, horse manure, chicken manure, human waste and so on. The nutrient soil is composed of loose field topsoil, decomposed organic fertilizer and suitable quantitative fertilizer. The ratio of field soil and organic fertilizer is 6:4, 0.5 to 1 kg of diammonium phosphate per cubic meter of nutrient soil, and the fertilizer is first dissolved in water. Spread the prepared nutrient soil and spread it evenly.
In order to prevent soil-borne diseases, soil disinfection is required. Mix 50% of carbendazim per square meter with 8 to 10 grams of fine soil, and take 2/3 of them to spread on the bed to make soil. 1/ 3 mixed with soil after sowing.
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