Soilless cultivation techniques of Rabdosia angustifolia

Asparagus is a kind of vegetable that we often eat, its nutritional value is very high, not only supplement a lot of vitamins, but also often eat anti-cancer, anti-cancer, beauty, detoxification and so on. So do you know how to grow asparagus? How to cultivate asparagus without soil?

Soilless cultivation techniques of Rabdosia angustifolia

1. Build cultivation trough: the cultivation trough is 25-30 cm high and 50 cm wide, with a distance of 70 cm from north to south, high in north and low in south. The brick seams can be bonded with cement mortar or filled with soil (a layer of old film at the bottom of the trough).

2, cultivation substrate: mushroom dregs and slag were mixed at the ratio of 1:1 to 1.5. disinfection expanded chicken manure 10kg and ternary compound fertilizer 2kg were added to 1 cubic meter of mixed medium. Where there were conditions, fine sand, peat, vermiculite and organic fertilizer could also be mixed into a compound substrate according to the proportion of 2RU 1 / 1 / 2. Chicken manure and sheep manure were the best organic fertilizers.

3. Install the groove: lay sand in the groove, about 5 cm thick. Put the mixed matrix into the prepared trough, flatten it, and pour the matrix thoroughly with heavy water. After the water is completely infiltrated, cover the film for 10-15 days to facilitate the full decomposition of the fertilizer.

Growth environment of asparagus

Rabdosia angustifolia is a kind of amphibious plant which can live in both dry land and paddy field, but it still grows vigorously when there is more water, so it is most suitable to be planted in the field where manure water is often excreted near the fertile paddy field or livestock house. More fertile dry land can also be planted, and planting in dry land can promote it to bear more seeds, so it can be cultivated in dry land when keeping seeds.

Puccinellia oleifera has strong adaptability to soil, both fertilizer and waterlogging tolerance, but also has a certain tolerance to barren, but under artificial cultivation conditions, in order to achieve high yield, clay soil or loam rich in organic matter is the most suitable. Asparagus is not tolerant to drought.

The seeds of Rabdosia angustifolia began to germinate at about 15 ℃, and the optimum temperature for growth was 20-35 ℃. When the initial temperature of axillary bud germination was above 30 ℃, the seeds germinated quickly. The light should be sufficient, but it has strong adaptability to close planting, and it belongs to the type of short day, especially the rattan hollow is more stringent to the short day than the hollow, and it is difficult to blossom and bear fruit when the sunshine is a little longer, so asexual reproduction is commonly used.

There are two cultivation methods of asparagus: dry planting and water planting. Dry planting is dominant in the north, while dry planting and water planting coexist in the south. The early-maturing cultivation is mainly dry planting, and the middle-late ripening cultivation is mostly water-planting.

Sowing and planting

1. Soaking seeds to accelerate germination: before sowing, soak the seeds in 50-60 ℃ hot water for 30 minutes, then soak the seeds in clean water for 24 hours, remove and wash the seeds after soaking, and accelerate germination under the condition of 30 ℃. During the budding period, rinse once a day with warm water, about 5-7 days later, the seeds can be sown.

2. Hole plate and substrate preparation: the hole plate specification for raising seedlings of asparagus is generally 72-hole or 128-hole. The matrix should use light matrix such as peat, vermiculite or perlite, which has a small proportion and good water retention and air permeability. The seedlings were raised with light medium, and the proportion of substrate was generally peat ∶ vermiculite ∶ mature organic fertilizer = 2 ∶ 1 ∶ 1. The substrate must be used to kill insects and diseases in order to cultivate disease-free and strong seedlings. Generally, the amount of 1 cubic meter matrix is 50% carbendazim water powder and 150 grams of phoxim EC.

3. Substrate loading and sowing: when sowing, the seedling substrate should first be installed in the hole plate, scrape off the excess matrix, pour through the substrate, and after water infiltration, stack it with 2-3 hole trays of the same specification to press out the sowing hole. Cover 1 layer of vermiculite after sowing and moisturize with thin film. After emergence, remove the mulch in time to breathe through the air and light.

4. Nursery bed management: the temperature is about 25 ℃ in daytime and more than 10 ℃ at night. Water management is the key to the success or failure of seedling raising. During the whole seedling raising period, the seedling substrate should be kept in a wet state all the time. When the seedling height is 5-7 cm, the foliar fertilizer is sprayed once, and the commonly used concentration is 0.2% urea or potassium dihydrogen phosphate. When the seedling grows to 10-15 cm, it can be planted.

Field management

1. Fertilizer and water management

After planting, asparagus can be harvested many times in a row. In cultivation, sufficient base fertilizer should be applied, and after each harvest, topdressing should be applied in time in order to achieve high yield. Topdressing urea 2~4kg. Asparagus likes to be wet and needs a lot of water, so it should be watered frequently to keep it moist all the time. In general, during the harvest period, it is watered once every 4 to 5 days, and the water is thoroughly watered.

2. Pest control

In organic ecotype soilless cultivation, the diseases and insect pests of asparagus are relatively light. There are mainly quenching disease, stem rot, white rust, whitefly, snail, cabbage worm, red spider, locust, aphid, bean moth and so on. In our city and its surrounding areas, snails and cabbage insects are the most serious damage. Insect control nets are generally used to prevent the spread of pests and reduce the use of drugs.

Through the above content, I believe everyone has a certain understanding of the cultivation of asparagus. Most of our common asparagus are grown in the soil, but in fact, they can also be grown in paddy fields. In fact, in life, eating too much fish and meat, often eating some green vegetables is also very good for the stomach and the body!