Artemisia selengensis, alias Basil, Chrysanthemum, Artemisia stalk, belongs to the genus Asteraceae. It is a vegetable species that is served with tender stems and leaves. The growth period is shorter, generally 40 to 50 days after sowing can be harvested. This vegetable has strong adaptability, strong cold resistance and simple field management. It is an ideal variety for greenhouse production of leafy vegetables in deep winter season. Below, introduce the high-yield cultivation points of Artemisia halodendron in the greenhouse.
First, choose the best species
In the northern region, lobular wormwood is commonly selected, also known as mosaic wormwood and wormwood. The leaves are deeply feathered, leaf-shaped, and the leaves are thin and hard in texture. Both stems and leaves can be eaten, with strong cold resistance, short growth period and strong aroma. They are very popular among vegetable farmers and are very suitable for cultivation in protected areas in the northern regions.
Second, fertilization site preparation
Mushi before the broadcast of rotten farmyard fertilizer 3000 to 5000 kilograms, superphosphate 50 to 70 kilograms, ammonium bicarbonate 50 kilograms. Evenly spread on the ground. After deep plowing and deep plowing, plough and flatten for 1 to 1.5 meters in width, and use your feet to step on it again to avoid falling down after watering.
Third, timely sowing
The use of greenhouse production, generally planted in mid-December, so that the listing period ahead of the Spring Festival is easy to obtain higher economic benefits. Regardless of whether the seed sowing or the germination sowing, can be divided into sowing and drilling, drill, according to 15 cm in the eel ditch, ditch depth of 1 cm. Water the pot in the ditch. When the water seeps, sow the seeds and spread the soil evenly in the ditch. After covering the soil, remove the topsoil from the adjacent pods and prepare for the next round of sowing.
IV. Post-broadcast management
1. Water and fertilizer management. After sowing, we must keep the surface moist to facilitate emergence. When the seedling height is 3 cm, the toppings are filled with water and watered 2 or 3 times during the whole growth period. When the seedling height is 9 to 12 cm, the first time the fertilizer is recovered, 10 to 15 kg of quick-acting nitrogen fertilizer is flushed into the water with a total of 2 fertilizers.
2. Temperature management. After sowing, the temperature may be slightly higher, during sunny daytime at 20°C～25°C, nighttime at 10°C, 4~5 days after emergence, 15°C～20°C during the day after emergence, 8°C～10°C at night, but it must be prevented from high temperature hurt. When the plant has 1 to 2 true leaves, thinning begins. It is advisable to keep the seedlings sown at a distance of 4 cm square. If drilled seedlings are used, it is necessary to loosen the seedlings.
V. Disease Prevention
The main diseases of Artemisia selengensis include leaf blight and downy mildew. In the initial stage of disease, spray 40% polysulfide suspension 500 times or 70% thiophanate-methyl WP 500 times or 50% acetaminophen wettable powder 1500 times. Every 5 to 7 days, spray 2 or 3 times continuously.
Sixth, picking and listing
Artemisia halodendron harvest is divided into one-time harvesting and staged harvesting. One-time harvesting is 40 to 50 days after sowing. The seedling height is about 20 cm, and it is cut on the ground. There are two methods for harvesting in stages: first, sparse harvesting, and second, keeping 1 to 2 side branches harvested. After each harvest, the topdressing fertilizer was watered once to promote the germination and growth of lateral branches. Every 20-30 days, one more harvest was conducted. The harvest yield per mu was 1000-1500 kg. It is better to harvest before the Spring Festival when the demand peaks.
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