1. Seed treatment: soak the seeds first, then take them out and mix them with fine sand, then put them in a container, cover them with a wet towel to accelerate germination. When the seeds turn white, they can be sown. 2. Seedling raising: prepare nutrient pots and nutrient soil, then sow seeds in the nutrient pots, with 65,438+0 seeds in each pot, cover the soil and water. 3. Planting: ventilation and hardening seedlings before planting, then selecting land, fertilizing and ridging, then digging planting ditches, planting bamboo shoots, covering soil and watering.

First, asparagus cultivation methods asparagus cultivation techniques

1, processing seeds

(1) Soak the seeds in warm water (25-30℃) for 3-5 days, change the water 1-2 times a day, and take them out after absorbing enough water.

(2) Put the seeds into a container and mix with fine sand or vermiculite, then cover them with a wet towel and put them in an environment with a temperature of 25-30℃ for germination, and turn them over twice a day. When the seeds turn white, they can be sown.

Step 2 raise seedlings

(1) Preparation of nutrient soil: Prepare 30% of decomposed farm manure, 30% of peat, 20% of aged furnace ash and 20% of farmland soil (no pesticide residue), and add 50g/kg of diammonium phosphate to the nutrient soil.

(2) Seedling raising in nutrient pots: prepare nutrient pots with the size of 8× 12cm, sow 1 seed in each pot with the sowing depth of 2cm, then cover the soil with 2cm and water.

(3) Temperature and humidity management: The suitable temperature for asparagus germination is 25-28℃, and the temperature after seedling emergence is 25℃, which should not be higher than 30℃ or lower than 8℃ to keep the soil moist. Because the newly emerged seedlings have weak roots, they need to be watered in time during drought, and attention should be paid to weeding.

(4) Preparation before planting: 7- 10 days before planting, properly ventilate and exercise asparagus to adapt to the external natural environment and reach the standard of healthy seedlings. It is required to have more than 3 aboveground stems and 5-7 underground storage roots.

Step 3 plant

(1) Land selection: sandy loam with high terrain, smooth drainage, deep soil layer, loose soil, good air permeability and rich organic matter is selected.

(2) Soil preparation and fertilization: the land is deeply turned 20-25cm, ridged with the width of 1.2- 1.4m, and 3000 kg of decomposed farmyard manure and 25 kg of ternary compound fertilizer are applied as base fertilizer per mu.

(3) Planting: The planting spacing is generally 30-40cm, and the planting ditch can be dug with a spade, with a depth of 30cm and a width of 30-40cm. Apply 25kg+ ternary compound fertilizer+1500kg organic fertilizer (per mu) in the ditch and mix well, then sprinkle the topsoil with a thickness of 10cm, as required by the ditch center. Then put the bamboo shoots in the ditch, each hole 1 big strong bamboo shoots, each hole with 2 weak bamboo shoots, and then cover the soil and water them. In the subsequent growth process of asparagus, reasonable intertillage weeding should be carried out and attention should be paid to the prevention and control of pests and diseases.

Second, the planting time of asparagus

1, planting time

Generally speaking, asparagus can be planted in April-May in spring and August-September in greenhouse, but the specific planting time needs to be determined according to the actual situation in various places.

2. Planting conditions

(1) illumination: Asparagus likes light, so it has a great demand for light. Insufficient light will affect its growth. Therefore, in the process of asparagus growth, it is necessary to provide enough light to avoid affecting its yield.

(2) Moisture: Asparagus is drought-resistant and has strong water retention capacity, but it cannot be short of water during bamboo shoot picking. Serious water shortage will affect the yield, so keep the soil moist, but there should be no water in the ground to avoid root rot.