Asparag fertilizer is good for a long period of growth. To obtain high yields and stable production, base fertilizer must be applied. At the time of site preparation, 25,000 to 3,000 kilograms of manure, turf ash, compost, etc. were applied per 667 square meters, and the applicator was turned into a tillage layer and it was 20 cm high. Open the hole according to the line spacing, apply 2 kg to 3 kg of basal fertilizer per hole, mix the fertilizer and the soil inside the hole.
Use the ramets to reproduce and plant densely. Not only can the propagation of the trifoliate shorten the production period, but also it can grow into new plants with luxuriant foliage, and the roots can be formed quickly and in large quantity with high yield. In the digging of the asparagine in winter and spring, the plants that grow lushly, have no pests and diseases, and have many roots and thick plants are cut. The stems on the ground are cut off, and roots with diameters of more than 1.3 cm are removed and used for medicinal purposes. The roots of one-year-old long shoots are divided into several plants with a knife. The incision should not be too large, so that each plant has 2 or more and 4 to 5 small tuberous roots as propagation material.
Reasonable top dressing. Asparagus can only be harvested after 3 to 4 years of planting. In addition to applying base fertilizer during planting, reasonable fertilizer should be applied. The first top-dressing plant is 40-40 days after planting. The height of the seedlings is 30-40 cm, and 1,000 kg of manure and livestock waste water per 667 square meters of plantation. Afterwards, when new seedlings are withdrawn from March to May each year, a new high-fat membrane combined with medicinal herbs, root alkaloids, will be used to promote strong seedling stems. From June to August, topdressing was applied once a month. Every 667 square meters of compound fertilizer (urea: potassium dihydrogen phosphate: potassium chloride 27:29:10) was applied for 5 kg. In October, 1 winter fertilizer was applied, applying 2,000 kg of manure and turf mixed fertilizer per 667 square meters, and 30 kg to 50 kg of superphosphate to promote the growth of root fertilizer in the coming year.
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