The Latest Asparagus Fertilization Techniques and Methods Tutorial

Asparagus, also known as shidiao bai, is a premium nutritious and health-promoting vegetable with extremely high edible and nutritional value. In planting and production, reasonable fertilization can increase asparagus yield and quality and boost returns. So how should asparagus be fertilized? Let's take a look together.

1. Nutrient requirements

The growth and development of asparagus require the absorption of nitrogen, phosphorus and potassium from the soil in relatively large amounts, and the element sodium is also extremely important to it. According to research, for every 4000 [units] of asparagus produced, 6.8 kg of nitrogen, 1.75 kg of phosphorus and 5.94 kg of potassium are consumed. The period of greatest fertilizer demand for asparagus is the rapid growth stage, that is, the stem and leaf growth period. In the same year or the second year after planting, the fertilizer requirement is only one third or one half of the normal fertilizer requirement.

2. Fertilization at the seedling stage

When raising seedlings, the growing medium is the foundation for cultivating strong seedlings. The growing medium must be rich in nutrients and can be prepared by mixing fertile soil with decomposed pen manure and livestock and poultry manure in certain proportions. After mixing, add 15-20 kg of dried chicken manure, 0.5-1 kg of superphosphate, 5-10 kg of plant ash or 1-1.5 kg of compound fertilizer No. 3 per cubic meter, so that the nutrient needs for seedling growth can be fully met.

3. Fertilization during the growing period

Asparagus prefers a loose, fertile soil environment, so before planting the soil should be deep-plowed once. During plowing, apply 2000-3000 kg of decomposed organic fertilizer per mu, then harrow finely and level. Then, in the planting furrow or hole, apply 3000-4000 kg of decomposed organic fertilizer, 40 kg of nitrogen-phosphorus-potassium compound fertilizer and 20-50 kg of cake fertilizer in layers. After planting, when the seedlings begin to sprout new branches, in order to promote their growth, sufficient water and nutrients must be supplied, and 8-10 kg of urea or 10-20 kg of nitrogen-phosphorus-potassium compound fertilizer can be applied per mu as a top dressing.

4. Fertilization at the mature stage

Fertilization of mature asparagus can be carried out in 3-4 applications. Before harvesting in spring, in combination with plowing or earthing up, open furrows between the rows and apply 20 kg each of compound fertilizer and urea per mu, or apply 1000-1500 kg of decomposed organic fertilizer. After harvesting stops, the nutrients stored in the roots are consumed heavily, and nutrients for stems and leaves must also be supplied, so fertilization during this period should account for about 70% of the annual fertilizer application, with 3000-4000 kg of organic fertilizer and 20 kg of compound fertilizer applied per mu. In the peak growing season in autumn, to ensure normal growth and accumulate more nutrients, around the beginning of autumn, apply 1000-2000 kg of organic fertilizer and 20 kg of compound fertilizer per mu.

The above is an introduction to asparagus fertilization techniques. We hope it can help you. To learn more related knowledge, please stay tuned to us.