Iceberg is an annual herb, scientific name "ice leaf on the flower", also known as crystal ice, ice grass, is the new characteristics of the introduction of vegetables to China. In recent years, some special vegetable gardens in Miyun and Daxing have been planted. Its crystal clear appearance, both food and health care value, combined with strong growth adaptability, can be harvested many times, pests and diseases rarely occur, making potted ice dishes popular with some people.

Iceberg is a health-care vegetable

The ice dish originates from southern Africa, western Asia and Europe. Its plant type is similar to Artemisia selengensis. Its leaf quality is hypertrophic, and a large number of ice-crystal-like granules grow throughout. It is rich in amino acids, natural folic acid, pantothenic acid, vitamin A, D-pinitol, beta-carotene, vitamin C, and sodium, potassium, and calcium minerals, and has the efficacy of preventing diabetes, anti-aging, etc. Nutritional value of health-care vegetables. Iced vegetables generally use their tender stems and young leaves as edible parts, and have a unique taste of fresh, smooth, slightly salty and sour. Common ways to eat are salad, dipping sauce, fried food and soup.

Potted iced vegetables without pests

Seedlings can be transplanted and broadcast directly on the ice, and it is recommended that the potted iced vegetables be seeded before the seedlings are live and the seedlings can be set again.

Should choose full, healthy insects without pests and diseases. The seeds of ice vegetables are subtle and hard, and germination should be done before sowing. There are two commonly used methods: one is soaked in water at 20°C-30°C for half an hour, drained and wrapped in wet gauze, placed under 25°C for germination for 24 hours. Maintain about 70% relative humidity and wash with water 1-2 times; the other is soaking in water at 20°C-30°C for 2-4 hours, then sowing.

Before sowing, it is necessary to water the soil to make it fully moist. After it is dried, press the hole to sow it. The distance is about 40 centimeters. Each seed has 3-4 seeds. Each seed should be 2 centimeters apart. When seedlings grow 2-3 leaves, they can grow seedlings and retain 2-3 seedlings. When the seedlings grow out of 4 leaves, the seedlings are kept, and the best growth is retained. When thinning and fixing seedlings, pay attention to avoid the injury to retain the seedlings, timely press and retain the seedling roots of the soil, make it compact; dredged seedlings can be eaten.

Potted ice vegetables green prevention and control technology

â—†Temperature management

Icebergs are more adaptable and have relatively less stringent temperature requirements. In the adult plant, the daytime temperature is 15°C-30°C and nighttime is 10°C-15°C. Plant growth at night is lower than 5°C or during daytime is higher than 35°C. The plant growth stops basically and will continue to grow once it is restored to the proper temperature. The daytime temperature after the new planting is preferably about 20°C. When the temperature is too low, the transparent plastic film can be covered on the pot, which can increase the temperature and humidity at the same time, which is conducive to emergence.

Iced vegetables prefer light, and when the sun is cool, it can promote leaf thickening and enhance plant growth. Under normal ambient temperature, full light cultivation should be carried out. High temperature and strong light season cultivation, shade net can be used to cool, while paying attention to timely ventilation and cooling dehumidification.

â—†Water and fertilizer management

Iced vegetables are fibrous roots, loose and fertile, and rich in humus soil. Peat soil with peat: pastoral soil: organic fertilizer in accordance with the ratio of 5:4:1 can be mixed; rapid growth phase should be followed by a large number of elements of water-soluble fertilizer.

Iceberg is more resistant to drought and less tolerant. During the cultivation process, it is necessary to pay attention to the control of water, and it is advisable to water it to see dryness and wetness, which is usually once a week. Excessive moisture during cultivation will reduce the formation of crystal particles. Proper water control is beneficial to the formation of ice crystals on the surface of the plant and can maintain a unique taste. Regular irrigation with 0.5%-1% light salt water can promote ice crystal formation. Keeping the soil surface dry is conducive to the healthy growth of ice vegetables. When watering, sprinkle water around the plants as much as possible to avoid mud splashing on the leaves.

â—†Pest and disease control

Potted iced vegetables rarely occur in insects and occasionally suffer from aphids. Should first clean up the planting area and reduce the source of insects; then cover a 40-mesh insect screen over the basin, and use yellow sticky board to trap and kill. When the amount of insects is large, brush can be used to remove insects.

Related Links

The names of new pests found on ice dishes are called purple worms.

In the field investigation of field diseases and pests in Lixian Town, Daxing District, the author discovered that a small pest was responsible for the damage of iced vegetables. It was identified as a species of purple spring worm. This is the first time that the purple worm has been found in Beijing to injure iced vegetables. The insects often gather in damp and dark areas. At present, there is no registered pharmaceutical agent for prevention and treatment. It is recommended that chemical pesticides be controlled under the guidance of professional plant protection technicians.

As the Chinese common name, the purple insect is widely used by domestic scholars for vegetable collembola, which is commonly referred to as multiple species of the genus Galliscus and Colligiella.

● Morphological characteristics

The size of the species is different on the back of the purple insect. The insect body is small, the body length is 1.2-1.5 mm, the body is flat and wide, and the back plate is blue-black or purple-black, which is good for jumping and easy to escape after being disturbed. In the morning, a large number of wet and dark areas such as leaves and shades of plants, sheltered leaves or shading areas, cracked wound sites, and leaf back surfaces accumulated.

●Injury symptoms

Field surveys have found that this species of purple plague mainly damages the leaf of the iceberg, and it can also damage the petiole. Seedlings and adults can be affected. Mainly in the way of biting the mesophyll tissue damage. At present, there are two kinds of damage: one is that a small amount of insects drilled on the front or back of the leaves to eat leaf tissue, leaving only the epidermis, forming a transparent cloud of irregular cloud-like chlorosis spots, and some spots around the spots will appear cracks; The species is a group of collembola insects that accumulate and bite the leaf. The "potholes" are formed on the front, back or sides of the leaves. The edge of the cut is irregular, leaving a small amount of transparent leaf epidermis. About 40% of the affected plant strains are affected, and more than 600 insects are estimated to be single-leaf insects in plants with large insect populations.

● Control measures

There are currently no pharmaceuticals registered for the damage of purple insects on vegetables. It is generally reported in the existing literature that pyrethroid pesticides (cypermethrin, deltamethrin, fenpropathrin, cyfluthrin, fenvalerate, etc.) are effective in preventing and controlling the purple hopper; and there are also reports that symplectic can be used. Sulphur-phosphorus spray or mixed soil to prevent the purple insects. According to the above report, a chemical agent can be used to control the insect under the guidance of a professional plant protection technician.

Organic Isomalto-Oligosaccharide Syrup

Fructo Oligosaccharide FOS Powder,Isomalto-Oligosaccharide Prebiotic Powder,Probiotic Food Isomaltooligosaccharide

Qingdao Bailong Huichuang Bio-tech Co., Ltd. , https://www.qdblcycn.com