How to choose asparagus? What are the methods of raising seedlings?

Asparagus is rich in nutritional value, known as the "king of vegetables", is one of the necessary vegetables in Europe and the United States every day, but also irreplaceable advanced nutrition and health products, can prevent cancer, anti-cancer, reduce blood lipids, anti-fatigue and so on. In recent years, asparagus cultivation has also developed rapidly in China. Asparagus has strong adaptability, growing from the south to the north, so how to choose asparagus? What are the methods of raising seedlings?

How to choose asparagus?

The quality of asparagus varieties directly affects the yield and product quality of asparagus, so it is particularly important to select excellent varieties according to local conditions. At present, asparagus seeds planted in China are mainly imported varieties, such as Apollo, Champion, Grady and so on. Some scientific research institutions have also bred some excellent asparagus varieties.

Asparagus in the selection of seeds, we must choose round and full, no mildew, yellowing and other phenomena. Asparagus seed coat is thick and hard, waxy outside, and it is difficult to absorb water. Soaking and drying asparagus seeds with new high-fat membrane before sowing can keep heat, keep moisture, absorb swelling, improve seed germination rate and make seedlings strong. Repelling underground pests and isolating virus infection.

The asparagus seeds were treated at low temperature in cold water of about 10 ℃. After soaking for 2 hours, the asparagus seeds were wrapped in clean gauze and placed in the well 10 cm above the surface of the water. The downhole temperature was about 5 ℃, drenched with water three times a day, picked up and placed in a cool place to dry a week later.

What are the methods of raising asparagus seedlings?

1. Direct seeding in open field

In China, direct seeding in the open field is generally used to raise seedlings, generally sowing in April or May in spring, planting in autumn, or sowing in August or September in autumn, and planting in spring the following year.

2. Raising seedlings in nutrition bowl

The diameter and height of seedlings raised in nutrition bowl are 8-10 cm and 8-10 cm respectively. Use 5 parts of clean garden soil, 4 parts of mature heap barnyard manure, 1 part of plant ash, and 2% 3% of calcium superphosphate to mix evenly.

Select the new seeds within one year to sow. After soaking the new seeds, the seeds were treated at low temperature of 0-5 ℃ for 60 days, or the seeds and moist yellow sand were accumulated in the open field for winter, so as to complete the dormancy period. Soak the seeds with 50 grams of carbendazim in 12.5kg water, pick them up after 24 hours, rinse thoroughly, then soak the seeds in clean water or 25-30 ℃ warm water for two days, change the water 1-2 times a day, drain and dry the seeds, and sow them before breaking the shell and budding.

Sow 2 seeds in each bowl, the distance between seeds is 3 cm, and the thickness of covering soil is 1-2 cm. Nutrition bowl seedlings are easy to lose water, so they should be watered frequently, usually one water for 3-5 days. Topdressing at seedling stage only needs 2 times, the first time after the first young stem spreading leaves, combined with watering urea 7-10 kg per mu, about 20 days later, the amount is the same as the first time.

The second young stem will be used for interseedling, and one seedling will be selected in each bowl. The seedlings should pry loose the culture soil and pull out the roots, otherwise the residual roots will still produce stems and leaves. When the height of the seedling is more than 25 cm and the number of stems is 3-5, it should be planted.

The above is the introduction of asparagus. When planting asparagus, the most important thing is to select seeds. Farmers must master the above points when selecting seeds. Asparagus has relatively few diseases and insect pests, and good planting benefits can be achieved as long as farmers are managed properly.

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