Artemisia selengensis is one of the common vegetables on the table of people. It is widely planted in all parts of China, with rich nutrition and high food value. Now that spring is a good season for vegetable cultivation, the following small series will introduce the high-efficiency cultivation techniques of Artemisia selengensis.
First, land preparation and land preparation
The cultivation of Artemisia selengensis is suitable for sandy loam soil. It is required to have convenient irrigation conditions. After selecting the ground, it will turn over the ground and apply good farmyard manure. Apply 1000 kg per 0.1 hectare and 25 kg of diammonium phosphate as base fertilizer. It is made into a flat file with a width of 1.2-1.4 meters and a length of 10-20 meters.
Second, sowing and seedling
1. Seed treatment: Soak the seeds in 50-55 hot water for 3-5 days before sowing for 15 minutes, soak for 12-24 hours, place them in a warm place around 25 °C to germination, and wash them once a day with water. If the new seed is to be placed in the low temperature treatment at 0-5 °C in advance, the dormancy is broken in about 7 days.
The price of Artemisia argyi seeds is about 15-20 yuan, but the price varies greatly depending on the quality, variety, market and purchase quantity of the seeds. According to the leaves, the cultivars of Artemisia selengensis are divided into two types: Artemisia scoparia and Artemisia scoparia. The texture of Artemisia scoparia is soft, the fiber is small, the quality is good, and it is heat-resistant. However, the cold tolerance is poor, the growth is slow, and the ripeness is slightly late. It is suitable for cultivation in the southern region. The leaf of Artemisia scoparia is thin, rich in flavor, thin in stems and branches, fast in growth and strong in cold resistance, but it is not heat-resistant and matures earlier, and is suitable for cultivation in northern areas.
2, seeding selection: spring protected field cultivation is generally carried out in late March or April with hot bed sowing: spring open field cultivation in the middle of April hot seed sowing seedling; spring open field live cultivation in early May buckle small arch shed or plastic film sowing, summer, Autumn cultivation, cold bed or open field can be planted in batches, 7-10 days a sowing date.
3. Seeding method: Visual cultivation method (live seeding or seedling transplanting) is carried out by spreading or seeding. The seeding amount is usually 3 to 4 kg per mu, and the seeding amount is 1.5 to 2 kg per mu. 1 cm of soil is watered after leveling.
Third, planting and field management
1. Appropriate time seedlings: The seedlings can be emerged after sowing for about one week. When the seedlings grow to 2 to 3 true leaves, the seedlings are planted. When the seedlings are directly seedlings, the seedlings with high density are pulled up, and the row spacing is 4-6 cm. Too thin or so will affect production.
2, transplanting method: When transplanting Artemisia scoparia, use a sickle to start the seedling, put it into the prepared pot and transplant it into the whole good ground. The row spacing is about 4-6 cm, then water once, after transplanting. Apply nitrogen fertilizer once every 20 days.
3, water management: the cultivation of Artemisia selengensis should pay attention to water management, watering should be properly controlled after emergence to prevent the occurrence of squatting and downy mildew, and watering according to the condition of the seedlings, usually watering once every 7-8 days.
4. Reasonable topdressing: When the seedlings of Artemisia scoparia grow to 10~12 cm, they will be topdressed once. After each harvest, the fertilizer will be chased once. During the growth period, 1~2 times of available nitrogen fertilizer will be chased with water, and urea is about 15-20 kg per mu.
Fourth, harvest
Artemisia selengensis usually grows for 40-50 days. When the plant is as high as 20 cm, it can be harvested with 12-13 true leaves. In order to keep the product fresh and harvest, it should be carried out in the morning.
If the harvest is not timely, the temperature will be high, which will lead to aging of stems and leaves, poor quality or internode elongation, and bolting.
If you want to harvest multiple times, you can use the knife to cut 2-3 cm at the base of the main stem, and cut the tender stems and leaves into 0.5 kg. It can be harvested again after watering for one month after cutting.
Five, pest control
1, blight
Symptoms: It harms the base of the stem of the seedling or the root of the underground. It is initially oval or irregular dark brown lesions. The diseased seedlings are wilting in the early days, and the nighttime recovery, the diseased parts gradually sag, overflow, and some gradually become dark brown, and finally die dry. But don't fall down.
Prevention: At the beginning of the disease, it can spray 38% of the pyrethroid 800 times solution, or 41% polypyridinium 600 times solution, or 20% methyl chlorophosphate 1200 times solution, or 72.2% Plex water. 800 times the solution, spray once every 7 to 10 days.
2, black spot
Symptoms: Dark brown spots on the leaves, enlarged or plaques with irregular large plaques, slightly raised edges, and small black spots on both sides of the leaves.
Prevention: In the early stage of the disease, spray 4% pyrimidine nucleoside antibiotic 20 ml + 41% polypyrimidine 20 ml, 15 kg water, 5 to 7 days, once every 2 to 3 times.
3, sclerotinia
Symptoms: The base of the stem is infected, the primary water stains are spotted, and then spread to light brown, causing soft rot or longitudinal cracking of the stem. The leaves are infected, and the leaves are gray to grayish brown and wet and rotted. When the humidity is high, the white fungus is spotted on the surface, and the leaves are rotted.
Prevention and treatment: 20% of the early stage of the disease, 30 ml of silazolamide, 25 ml of carbamide, 25 ml of water, 15 times of water for 5 to 7 days, and 2 to 3 times.
4, dishes
Symptoms: The young larvae feed on the seedlings and heart leaves, which affects the growth of the seedlings. In severe cases, the seedlings are dead, resulting in the lack of seedlings. In addition to biting the heart leaf, the older larvae can also eat the stem and roots of the stem and transmit bacterial soft rot.
Control: When the larva hatching period or when the heart is damaged and there is a screen, apply 5% inhibition of Taibao EC 4000 times liquid spray 2 to 3 times, pay attention to spray the medicine onto the cabbage.
5, locusts
Symptoms: often clustered in leaves, tender stems, flower buds, buds and other parts, sucking juice, causing the leaves to shrink, curl, deformed, causing the leaves to wither and even the whole plant to die.
Control: 50 ml of 25% eucalyptus emulsifiable concentrate per acre, or 1500-2000 times of imidacloprid series products, or 25% solution of imidacloprid 2500 times, or 25% anti-Polycarb 3000 times solution.
The above is the high-efficiency cultivation technology of Artemisia selengensis, I hope to help you. If you want to know more about agricultural technology, please pay attention to Hui Nong School!
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