Cultivation of asparagus requires a large row spacing. In the newly planted asparagus exposed field, some dwarf vegetables can be interspersed between their rows, so that more than one year can be collected and the purpose of high-yield commercial efficiency can be achieved. The pomegranate town of Donghai County, Jiangsu Province has been cultivated in this model since 1995, with an output value of over 10,000 yuan per mu.
First, cultivation and management of asparagus
1, species selection. High-quality, high-yield asparagus varieties include Mary Washington 500, Mary Washington 500W, California 72, California 873, Lu Asparagus 1 and Asparagus King. According to local conditions.
2, sowing nursery. When the ground temperature is 5 cm below the ground temperature, it can be planted at a temperature of 10°C or more, and planting from May to June is appropriate. According to the ratio of seedbeds to Daejeon 1:10-12, prepare seedbeds. Before sowing, fresh water can be used to remove seeds floating on the surface of the water and soaking with Uspron 1000 times for 12-24 hours. Seeding bed width 1.2 meters -1.5 meters. Open transverse grooves every 40 cm, 2 cm deep. 1 seed every 7-10 cm in the trench, covered with fine soil 2 cm thick, and covered with straw 3-5 cm thick. For each acre of field, 400-500 grams of seeds are used. When 60% of the seed emerges, remove the wheat straw. When the height of seedlings is 10-15 cm, 41 kg of urea and 3 kg of potassium chloride are forcibly applied per acre. Each month, top dressing is performed once, and the last one in mid-September is top dressing.
3, site preparation. Each mu of rot 4000 kg of organic fertilizer, deep turn 25-30 cm. For harvesting white asparagus, 1 trench is opened every 1.8 meters to 2 meters; for harvesting green asparagus, 1 trench is opened every 1.5 meters. Ditch depth 30-40 cm, width 50--60 cm. Per acre ditch planted maturity of the circle fertilizer 2000 kg to 3000 kg, stevia over 30 kg -5O kg of calcium, potassium chloride 10 kg, 15 kg of ammonium sulfate, and mix well with the soil, stepping real. Another layer of 8 cm thick soil can be planted. Colonization is carried out from October to November or from the end of February to the beginning of March. When planting, cut the stalks of the shoots short, leaving 20 cm. Plant spacing 40 cm, cover soil 5-6 cm thick. Combined with forced fate, the root plate was buried 10 cm deep underground.
4, the field in reason. Asparagus cultivation requires more organic fertilizer. After harvesting each year, the application of 1500 kg-2000 kg of urea per mus, urea 5 kg to 8 kg, superphosphate 30 kg-40 kg, potassium chloride 15 kg. The fertilizer is buried in the soil. In mid-August, 1,000 kilos of manure (or 10 kilos of urea), 30 kg of superphosphate, and 15 kg of potassium chloride were applied to the first batch of fertilizer per acre. During the harvest, the soil should have a certain amount of moisture. The rainy season should be promptly drained. Watering or raining should be done in time. White asparagus was harvested, and soil was cultivated before spring stems were pumped. In mid-March, the earth is cultivated when the soil temperature reaches 10°C or more in the next 10 cm. Soil depth is 15 cm. Harvesting begins 10-15 days after soil cultivation. After the harvest was completed, the soil was immediately opened and the roots were exposed for 2-3 days. After the first application of fertilizer, the ground was restored to the state before earth-cultivation. In order to prevent flooding and aeration, the soil around the plant may be slightly higher than the soil surface between the rows.
5. Pest control. The diseases of asparagus mainly include stem blight, brown spot, root rot and blight. In the winter, when the stems on the ground are withered, they should be pulled out, cleaned of litter and burned away from the plot. Timely tillage and weeding. The rainy season drains the soil in a timely manner, so that the soil is always wet and dry alternately. When the young shoots are unearthed at a height of 10 cm, spray 0.5%-0.7% Bordeaux mixture, or 50% carbendazim wettable powder 800-1000 times, or 75% chlorothalonil wettable powder 800-1000 times. Spray once every 10 days. Mainly prevention. Once the disease occurs, it can be sprayed with 64% antivirus 1000 times liquid. "
The underground pests of asparagus are mainly tigers, golden needles and cockroaches. The pests that damage the ground include tawny moths and thrips. For underground pests, bait traps can be used for killing; for pests on the ground, Chrysanthemum pesticides can be controlled.
Second, intercropping vegetables management
1, winter spinach. Sowing from mid-September to late November. To broadcast 4 rows between the rows of asparagus, the line is 10 cm x 15 cm. Harvested in mid-March.
2, spring and summer flower coconut Lai. In mid-March, a small shed is used to raise mu. In late April, asparagus was harvested and planted in asparagus rows of 2 rows with a spacing of 40 cm x 40 cm and harvested from late June to early July. If it is harvesting green asparagus, broccoli sowing and planting time can be 20-25 æå‰ in advance. Green broccoli can also be grown into dwarf kidney beans, or dwarf vegetables such as spring and summer Chinese cabbage, risotto, and dwarf tomato and cumin. The next step, you can cultivate dwarf autumn vegetables, such as purple cabbage, black Wutian carrots, raw radishes and barrels and other vegetables. In particular, the cultivation of green leafy vegetables can be adjusted according to the market in order to obtain higher economic benefits.
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