The latest course of asparagus planting techniques and methods

Asparagus, also called asparagus, asparagus, asparagus and asparagus. Asparagus contains protein, fat, calcium, iron and various vitamins. Asparagus is a valuable vegetable with delicious taste, rich nutrition and high medicinal value. It can lower blood pressure, prevent cardiovascular, urinary and lymphoid diseases, and has unique anti-cancer effect. It is a world-famous dish and medicine, and the products sell well at home and abroad. Asparagus is easy to cultivate and easy to manage. At the same time, asparagus can be harvested continuously for 10 to 15 years, growing throughout the year in the south and dormant in winter in the north. Asparagus will continue to grow in the second year. Asparagus has strong adaptability, easy cultivation and lax temperature requirements. The underground part of asparagus can withstand low temperature of-20 ℃ in soil in winter and high temperature of 35-37 ℃ in growing period. It also has the advantages of less labor, convenient management and high yield in cultivation.

Asparagus seed treatment

Before sowing, soak in 25 ℃ ~ 30 ℃ warm water for 3 to 5 days, change water once or twice a day, wait for the seeds to absorb enough water, mix fine sand or vermiculite, put them in a container, cover with wet towels, accelerate germination under the condition of 25 ℃, turn twice a day, and sow seeds after exposed for 5 days for 8 days.

Seedling raising technique of asparagus

Family potted plants, small garden planting friends, you can use peat soil or seedling soil plus seedling tray, seedling block plus seedling box method to raise seedlings, the thickness of the covering soil is about 2-3 cm. It is best to raise seedlings at 25-30 degrees. In agricultural production, the following methods are used:

1. Nursery bed preparation: the seedbed should choose fertile and loose sandy loam. 2500-3000 kg of rotten farm manure, 20 kg of diammonium phosphate and 15 kg of potash fertilizer should be applied to each mu of seedbed. Sowing with vertical border and horizontal trench, row spacing 20 cm 30 cm, plant spacing 7 cm 10 cm, eye opener, one seed per eye, 2.5 cm soil cover, and then covered with thin grass to warm and keep warm. The sowing time is from late April to early May (it is suitable for the ground temperature to pass through 10 ℃).

2. Raising seedlings in greenhouse

① nutritious soil preparation, mature farm manure 30%, peat 30%, aged furnace ash 20%, farmland soil 20% (no pesticide residues) 50 grams of diammonium phosphate per kilogram of nutritious soil.

The seedlings were raised in a ② nutrition bowl (8 × 12 cm). One seed was planted in each bowl with a depth of 2 cm, covered with soil and watered thoroughly.

According to the ③ temperature and humidity management, the suitable temperature for asparagus germination is 25 ℃ ~ 28 ℃, 25 ℃ after emergence, the highest temperature is not more than 30 ℃, and the lowest temperature is not less than 8 ℃. After emergence, the root system of the seedling is weak, watering in time during drought and weeding in time. 7-10 days before planting, the seedling begins to be ventilated to make it adapt to the external natural environment and reach the standard of healthy seedling. There are more than 3 aboveground stems and 5-7 underground stored roots.

Planting method of asparagus

1. Site selection: choose sandy loam with good soil quality, high topography, smooth drainage, deep soil layer and rich organic matter, PH 5.8-6.7 is suitable, and carrots and sugar beets should not be planted in the previous crop.

2. Soil preparation and fertilization: ridging 20-25 cm deep, applying 3000 kg of rotten farm manure per mu and 25 kg of ternary compound fertilizer as base fertilizer. The width of the ridge is 1.2 to 1.4 meters. 3. Planting method. The planting ditch was dug with a shovel with a depth of 30 cm and a width of 30 cm. 25 kg of ternary compound fertilizer and 1500 kg of organic fertilizer were applied per mu of the ditch, mixed evenly into the ditch, then sprinkled with 10 cm thick topsoil, and the center of the ditch was slightly high. put the graded bamboo shoot seedlings into the ditch, one in each hole of the big and strong seedlings and two in each hole of the weak seedlings. Extend the root system around, the bud eyes along the trench in the same direction, arranged in a straight line, easy to manage soil cultivation and harvest. Hold the seedling with one hand, first cover a small amount of soil and compact, then cover the fine soil 4cm and 5cm, pour through the water, cover the soil 1cm and 2cm after water infiltration, prevent hardening and water evaporation, check and replant the seedlings in time 3-4 days after transplanting to prevent lack of seedlings.

Management of asparagus after planting

15 days after planting, one ploughing and weeding should be carried out to loosen the soil, aerate and preserve soil moisture, keep 60% to 70% of soil moisture, water should be properly watered after drought, and drainage ditches should be dug in the rainy season to prevent rotting roots.