Asparagus high yield cultivation technology
Asparagus is one of the important varieties of exported vegetables, second only to mushrooms. Asparagus is known as the king of vegetables. It is also rich in nutrients and is also known as delicious medicine. It can inhibit tumor cell growth and treat cancer; it can prevent and treat diseases such as hypertension, heart disease, cystitis, nephritis and edema; it can resist fatigue and increase appetite. Can remove the toxic substances produced by the metabolic process in the human body and improve human immune function. From the perspective of domestic and foreign markets, supply exceeds demand for many years, especially in the foreign market. The price is high and stable. The initial product purchase price is maintained at 4 to 6 yuan per kilogram, and perennial output per mu is above 800 kg. It is a rural planting. Industrial restructuring, the most effective way for farmers to get rich. Asparagus is a perennial perennial plant. It is different from ordinary vegetables and crops. After a seeding, seedling raising and planting in Daejeon, bamboo shoots can be harvested continuously for 10 to 15 years. Except for the first year's capital and labor input, from the following year, only fertilizer, Labor input for pesticides and field management. Asparagus is put into production faster, and it can reach 400kg in the second year of planting, and it can enter into a period of high yield in the third year, and the yield per acre can reach more than 800kg. The main cultivation points are as follows. 1. Lot selection. Should avoid the land where the former was a mulberry orchard, orchard or woodland. Because of the rot inside the soil, it is easy to produce purple-blue pleura, which is easily transmitted to asparagus and causes root rot and causes serious losses. Asparagus is resistant to drought and drought and should avoid low-lying terrain. 2. Select good varieties. Should choose high yield, high quality, high efficiency and adaptability Apollo P1 hybrids, purple passion varieties. 3. Nursery. The nursery time is appropriate to begin in early May or begin in mid-July. If field seedlings are grown, the asparagus seeds are thick and difficult to germinate, and germination must be done. The specific method is to soak the seeds in hot water of 55 degrees Celsius for 15 minutes, then soak in seeds in warm water at 25 degrees Celsius for 24 hours, and then germinate for 48 hours. When the 5% seeds are “exposedâ€, they can be sowed. 4. Colonization. To colonize the north and south, the plant spacing was the best 0.3mx1.3m, and the planting density was 1700 per mu. Before the planting, first divide the ditch by 1.3m row spacing, apply 1,000kg chicken manure per mu, and compound fertilizer 40kg per mu. After backfilling the soil to 15cm above the ground, plant the plant. 5. Field management after planting. The goal of field management after planting is to allow seedlings to be produced quickly so that they can enter the harvesting period early. The specific measures include cultivating loose soil, filling seedlings, and weeding; reasonably interplanting, suitable for dwarf peanuts, can increase land use efficiency, increase economic income, timely prevent and treat pests and diseases, and do a good job of trench drainage to prevent water accumulation after rain When there is not enough land, fertilizers will be timely. 6. Harvest. After the height of stems in the local area exceeds 1.5m, or if most of the newly unearthed stem bases exceed 0.7cm, shoots can be put into production. Observe during harvesting bamboo shoots. When the diameter of the bamboo shoots becomes thin, stop the stem and leave it. In order to increase the yield, bamboo shoots from the mother stalk can be harvested. Shooting period can not be top-dressing, when the stems are topped with potassium-based compound fertilizer. During the shoot-up period, the water should be diligently watered, once a day for 10 days. 7. Dormancy period. The north part of the asparagus turns yellow in winter, and it is necessary to seal frozen water before freezing. 8. Pest control 1 Insect pest. Insect pests are divided into two major categories: pests and underground pests. The above-ground pests that are harmful to asparagus are negative mudworms, aphids, and moth pests. The control of negative slime can be used for biological control of bent-tailed urchins. Chemical control can spray dipterex or deltamethrin. Locust control can be used yellow trapping or silver film repellent. There are four species of earthworms that are harmful to asparagus. They are earthworms, cockroaches, wireworms, and ground tigers. It is one of the most effective ways to seduce and kill 4 adults of pests. The use of pesticides during the shoot period is forbidden. During the production period, phoxim should be fed with roots and 400 ml per mu. 2 disease. Diseases of asparagus are also divided into above-ground diseases and underground diseases. The above-ground diseases are mainly stem blight disease brown spot. Control measures must adopt comprehensive measures. Before bamboo shoots are harvested, shoots are thoroughly cleared, burned stubble shoots are destroyed, and 2 to 3 kg of acetonitrile is used per acre. Reasonably harvested bamboo shoots are used to prevent plants from becoming susceptible to disease; formula fertilization, avoiding more nitrogenous fertilizer, and applying more manure; intercropping The membrane prevents rain splashing; when stems are stopped, 600 times of carbendazim and tortoise are alternately sprayed 4 to 5 times. Underground diseases are mainly root rot. The disease is mainly prevention. When planting, avoid forest land, orchards, mulberry fields, etc., strengthen fertilizer and water management, increase organic fertilizer, promote root growth, strengthen disease resistance, and shoot well to prevent waterlogging. After the strain was excavated in time, the soil was disinfected with 20% lime water or diammonium pine.
With PSA principles, ETR medical PSA Oxygen Generator can produce 93%±3% purity oxygen gas directly from compressed air. Compared with traditional Bulk liquid oxygen and cylinders oxygen, ETR on-site PSA oxygen generator can reduce cost down to 50 percentages. They can produce oxygen by your will, overcoming the limits of distance, location and transportation.
Compressed air is purified through the air dryer and filters to a certain level for main generator to work with. Air buffer is incorporated for smooth supply of compressed air thus to reduce fluctuation of compressed air source. The generator produces oxygen with PSA (pressure swing adsorption) technology, which is a time proven oxygen generation method. Oxygen of desired purity at 93%±3% is delivered to oxygen buffer tank for smooth supply of product gas. Oxygen in buffer tank is maintained at 4bar pressure.
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