1. Fertilization at seedling stage (1) Breeding of seedling cultivation soil. Cultivation of soil is the basis for the cultivation of asparagus seedlings, and the cultivation soil must be rich in nutrition and good physical and chemical conditions. With cultivation soil available fertile loam, decomposed circle fertilizer and livestock manure, large manure, grass and wood ash. The proportions are: 6 parts of fertile soil after sieving, 4 parts of decomposed cattle and horse manure, and 4 ring fertilizers. After mixing evenly, mix 15-20 kg of dry manure or dry chicken manure per cubic meter, and 0.5-1 kg of superphosphate. , 5-10 kg of plant ash or 1-1.5 kg of three compound fertilizers. After mixing, fill in Yangshuo or arch shed, the thickness of 14 cm. (2) Preparation of nutritious earthworm nursery nutritious soil: generally consists of 5 pieces of clean garden soil, 2-3 pieces of cooked piles of manure, 1 part of river mud, 1 part of plant ash, and 2%-3% of superphosphate, fully mixed, and Add water and mix it to the extent that it is "hands in a group and landing is scattered." 2. Fertilization in childhood (1) Fertilization before planting. Asparagus likes to loose and fertile soil environment. Before the planting, the soil should be deeply ploughed again. Before the ploughing, 2000-3000 kg of organic fertilizer should be applied every 666.7 square meters. In a planting trench with a depth and width of 40 cm each, 3,000-4,000 kg of decomposed organic fertilizer, 40 kg of nitrogen, phosphorus and ternary compound fertilizer (or 25 kg of ammonium bicarbonate, 50 kg of superphosphate, chlorine 15 kg of potassium), 25-50 kg of cooked cake fat. (2) Fertilization after planting. One month after colonization, all the young plants have survived and emerged new shoots. In order to promote their growth and development, sufficient water and nutrients must be given. Then, quick-acting fertilizers can be applied, and 8-10 kg or ternary urea per 667 square meters. 10-20 kg of compound fertilizer. Before the plants enter the fall, they will ditch the livestock manure or other organic fertilizer 3000-4000 kg, phosphorus and potassium fertilizer respectively 10 kg, to promote autumn hair, expand plant assimilation area, and accumulate more assimilate for the next year. Harvest laid the foundation. 3. Fertilization in adulthood Fertilization of adult asparagus can be carried out in 3-4 times a year. Before the spring harvest, the land can be combined with cultivating land and cultivating ridges, and 20 kg of compound fertilizer and urea can be applied to every 667 square meters of trenches. It is also possible to apply 1000-1500 kg of rotten and fine organic fertilizer. After harvesting, the storage of root nutrients consumes a lot, and the stems and leaves of the aboveground are also formed. Therefore, about one month after stopping the harvest, it is the period with the largest amount of fertilizer in the year, accounting for 70% of the annual fertilization amount. During this period, 3000-4000 kg of organic fertilizer is applied per 667 square meters, and 20-30 kg of compound fertilizer and urea are respectively mixed. The amount of organic fertilizer is less or the quality is not good. 50-100 kg of cake fertilizer can be mixed and opened between rows. Apply the ditch, then sprinkle the soil. After asparagus Qimiao watering 1, promote the absorption of asparagus fertilizer. After more than one month of growth, before and after the beginning of autumn, there will be a peak of stem extraction, and then enter the autumn vigorously for a long time. In order to ensure the normal growth during the autumn period, promote plant production and accumulate more photosynthetic products, before and after the fall, appropriation of 1000-2000 kg of organic fertilizer and 20 kg of compound fertilizer can be applied between the rows. If the amount of organic fertilizer is insufficient, the amount of fertilizer may be appropriately increased, but nitrogen, phosphorus, and potassium must be used in combination, and nitrogen fertilizer must not be applied without applying phosphorus, potassium, or nitrogen fertilizer. In the late autumn and early winter, after asparagus ceases to grow, 1000-2000 kg of organic fertilizer and 15-20 kg of compound fertilizer are applied every 667 square meters to ensure safe asparagus overwintering and promote early onset of the following year. Do not ditch the top dressing too close to the asparagus, nor too far away, generally leave the bamboo shoots 20-40 cm, not to hurt the root is appropriate. During the harvest period, applying a small amount of chemical fertilizers in phases will have a significant effect on increasing the amount of bamboo shoots harvested. In particular, 10-15 kg of compound fertilizer and urea will be chased every 667 square meters for 10-15 days before stoppage. Immediately absorbed by asparagus. Asparagus fertilization, people around the country also explored some successful experiences. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone 2004-2021 New Laser Distance Sensor
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