How to plant asparagus seeds?

Asparagus is native to the eastern coast of the Mediterranean and Asia minor. Up to now, there are still wild species in Europe, Asia and the grasslands and river valleys of North Africa. It has been cultivated for more than 2000 years. It was introduced into America in the 17th century, Japan in the 18th century and China in the early 20th century. Cao County, Shandong Province, China is known as "the hometown of Chinese asparagus". Let's take a look at how to plant asparagus seeds.

Asparagus seedling raising time

Asparagus seedling raising in open field can be sown from early April to early August, and seedling raising in small arch shed can be carried out in early March. The asparagus seedling land should choose the sandy soil with fertile soil, good air permeability and good drainage and irrigation conditions, and select the land with few weeds, especially the perennial weeds.

Asparagus seed treatment

Asparagus seed has a thick skin and a thick layer of wax, so it is not easy to absorb water. It must be soaked and treated with chemicals before sowing. Before sowing, soak in 25 ℃ warm water for 3 to 5 days, change water once or twice a day, wait for the seeds to absorb enough water, mix them with fine sand, put them in a container, cover them with a wet towel, accelerate germination under the condition of 25 ℃, turn twice a day, and sow seeds after 5 days of exposure.

Asparagus seed sowing

Asparagus seedling transplanting is the most commonly used method in production, which is convenient for careful management at seedling stage, high seedling emergence rate and less seed consumption, which can shorten the root cultivation period in the field and improve the land utilization rate. Usually, about 10% of the seeds can be sown when they sprout. Before sowing, the nursery should apply sufficient basic fertilizer and make a flat bed 1.1 meters wide. The sowing depth is determined according to the air temperature, and the sowing density is 10 × 10 cm.

Planting technique of asparagus

Before planting asparagus, the soil was deeply leveled, and the north-south trench was opened according to the row spacing of 1.5m. The ditch was 40 cm wide and 40 cm deep. 5000 kg of high-quality organic fertilizer and 50 kg of nitrogen, phosphorus and potassium compound fertilizer were applied per mu in the ditch, which was mixed with the soil. The planting time is generally in the first ten days of May, when the age of asparagus seedlings reaches 60-70 days, with 4-5 strong seedlings and a plant height of 15-20 cm, the row spacing is 150-160 cm and the plant spacing is 35-40 cm.