Artemisia annua is a nutrient-rich green vegetable, whether it is hot pot or stir-fried vegetables are very delicious, so now many farmers will start to grow Artemisia annua. But the quality of the plantation is not the same, because the good method is not used. The following is to introduce the planting method and time of Artemisia annua from the six points of planting time, planting method, water and fertilizer management, precautions, pest control and harvesting.
Artemisia annua is usually planted in the spring and autumn of each year, but due to the delicious taste of Artemisia annua, some areas also grow in greenhouses in winter. It is usually planted in February to May in the spring and in July to September in the autumn. Because Artemisia annua has a special taste that insects don't like, Artemisia annua is also a relatively healthy insect-free green vegetable.
The most common way to grow Artemisia annua is directly in the soil according to a certain density, generally every 20 square centimeters will be planted 3-4 Artemisia annua. The second is to use seeds directly for planting, before planting the seeds need to be soaked in warm water for 7-12 hours, fished out in a cool and ventilated place to dry and then evenly sprinkled in the field, and then cover the seeds with a thin layer of soil, watered through.
Water and fertilizer management is the most important part of the growth process of Artemisia annua, as proper fertilization and watering will promote the growth of Artemisia annua. When the seeds germinate, they need to be watered in time, and a small number of watering methods are generally selected to ensure that the soil is moist. Generally in the first 7-14 days of harvesting need to be timely topdressing, topdressing is mainly based on fast-available nitrogen fertilizer, but it is necessary to pay attention to the amount of nitrogen fertilizer, can not be used more, because the excess nitrogen fertilizer will cause artemisia annua. Subsequent watering is necessary about every 3-8 days to keep the soil moist.
In the growth process of Artemisia annua, it is necessary to pay attention to the situation of weeds in the field, and if weeds appear, they need to be removed in time to avoid weeds and Artemisia annua competing for nutrients.
The land can be turned deep before planting Artemisia annua, which avoids overwintering of pests and diseases, so that the pests and diseases of Artemisia annua can be avoided from the root cause. However, it is still necessary to strengthen management when planting, and an appropriate amount of phosphorus and potassium fertilizer can be applied during fertilization, which can improve the disease resistance of Artemisia annua.
Artemisia annua is harvested in one-time harvest and harvested in stages. Generally, the one-time harvest is 40-50 days after sowing, and when the artemisia grows to about 20 cm, it can be harvested against the ground. Staged harvesting can retain 1-2 side branches for harvesting, generally every 20-30 days can be harvested.