Cultivation measures 1. Nursery In the spring season in my area should be nursed, generally in the middle of April, the base bed fertilizer applied to the seedbed. The asparagus seeds are made of leather with poor water permeability and slow water absorption. They are soaked in water at 25 to 30°C for 2 to 3 days before sowing and sowed after germination. After finishing sowing the soil, cover grass moisturizing. 10 to 15 days from the start of seedlings, seedlings with 0.5 ~ 1 kg / 667 square meters, breeding seedlings can be planted in the field of 0.6 to 1 hectare. 2. Selection Asparagus is a perennial perennial crop, generally suitable for sandy soil or loam with fertile soil, good air permeability, deep soil layer, good drainage, and water and fertility retention; it avoids heavy clay with poor air permeability, shallow plowing layer, and hard subsoil. For lands with strong acidic or alkaline soils and gravel, the plots of tomatoes, beets and alfalfa are not suitable for planting asparagus. 3. Colonization My district should be planted in the spring. Green asparagus planting spacing 135 ~ 150 cm, white asparagus to facilitate the soil, expand the row spacing is 180 cm, plant spacing are 30 cm, planting groove width 40 cm, ditch depth 25 ~ 30 cm, ditch spread basal fertilizer and compound fertilizer 667 square meters of soil-fertilizer 3000-4000 kg, compound fertilizer 30 kg, and cover soil 4 cm. The seedlings were planted into the trenches by plant spacing, covered with soil 3 to 5 cm, and irrigated with water until the second time after a week of easing. 4. Field management Asparagus grows for a long period of time. In the first to second years, it is necessary to diligently cultivate, weed, and strengthen fertilizer and water, and cultivate robust plants so that they can enter the rich period as soon as possible. 1 Fertilization Asparagus requires the most nitrogen fertilizer, followed by potassium, phosphorus and calcium fertilizer. In the fall or early spring, the quality of farmyard manure is 1500-2000 kg/667 m2. When the stems are 4 to 5 cm high, sufficient water and nutrients will be given to chase the bud fertilizer urea 7-10 kg/667 m2; Fertilizer 2 to 3 times, first light and heavy, increase application of phosphorus and potassium fertilizer, with irrigation; after shooting bamboo shoots, apply organic fertilizer 1000 kg and urea 15 kg per 667 square meters, rejuvenation; August human urine; last time Top dressing finishes 2 months before frost to prevent new shoots in autumn. 2 Irrigation with timely irrigation can increase the yield and quality of asparagus. During the harvesting period, the water holding capacity of the soil is maintained at 60% to 70%. During drought, irrigation is conducted 10 to 15 days, and the frozen water is filled before the winter. 3 Diseases and pests control diseases include stem blight disease, brown spot disease, rust disease, and root rot disease. The main insect pests include Spodoptera litura, earthworm, golden needle, aphid, and red spider. Control methods: strengthen the clear garden, prevent flooding in the winter, prevent over-tight clusters, etc.; chemical control can spray 1:1:300 Bordeaux mixture, thiophanate-methyl, carbendazim, diuretic sodium, agricultural resistance, etc., 7-10 Once a day, 2 or 3 times in a row; pest control is mainly for trapping and killing adults, and trichlorfon, chlorothalonil, deltamethrin, chlorfenadone, and extermination can be used for prevention and control. 5. Harvest Asparagus generally begins harvesting in the 3rd to 4th year of planting, with a harvest period of 60-80 days. Young stems of green asparagus can be harvested at about 25 cm and young stems of white asparagus are harvested at about 18 cm. Harvested once a day, every morning and evening when the temperature is high. Small Cable Reel,Self Retracting Cable Reel,Auto Rewind Water Hose Reel,Wall Mount Water Hose Reel NINGBO QIKAI ENVIRONMENTAL TECHNOLOGY CO.,LTD , https://www.water-hose-reel.com