What are the techniques for growing asparagus?

What are the techniques for growing asparagus? Please introduce the following techniques for asparagus cultivation: Soil preparation and fertilization. Select sandy loam with ventilation to the sun, deep soil layer, low groundwater level, pH value 6~6.7 and good permeability, and the previous crop cannot be mulberry garden, orchard, rice, tomato and other land. Deep ploughing the land by 30 - 40cm, applying 2000kg of decomposed organic fertilizer in a centralized furrow every 1/15 hectare in combination with ploughing, applying 30 - 40cm planting ditches on the organic fertilizer, applying 2000kg of decomposed organic fertilizer in a centralized furrow every 1/15 hectare, applying 30 - 40kg of compound fertilizer or 20kg of ammonium sulfate on the organic fertilizer, evenly mixing and leveling the ditch soil, and irrigating enough water for planting. Planting of seedlings in nutrient pots in protected land. The planting period is generally from early May to early June, and the soil preparation is the same as that of direct seeding seedlings in the open field. When planting, according to the specifications of green asparagus row spacing of 1.2 meters, white asparagus row spacing of 1.6 meters and plant spacing of 30 centimeters, the holes are dug and planted in the planting ditch. In order to make the growth direction of the new buds sprouting underground consistent with the planting ditch direction, the first stem must be placed along the ditch, the planting depth should be slightly higher than the ditch surface, and watering and shallow soil covering should be carried out in time after planting, the depth is 2~3 cm. Click for more asparagus growing techniques Click for more vegetable growing techniques