The latest fertilization method of Artemisia annua L.

Artemisia annua is a very popular wild vegetable in China, but with people picking wildly, the number of wild vegetables is also declining sharply. Now basically are artificial planting varieties, artificial planting requires us to do a lot of management work, of which fertilization is a very important point. So what is the fertilizer requirement rule of Artemisia annua? How to fertilize chrysanthemum? What are the points for attention? Let's take a look at it with the editor.

1. Law of fertilizer requirement

The growth of Artemisia annua needs a lot of nutrients, among which the demand proportion of nitrogen, phosphorus and potassium is the highest. The main edible part of Artemisia annua is the tender stem, and there is a great demand for nitrogen in the planting process, so we should use nitrogen fertilizer as the main fertilizer, combined with appropriate amount of phosphorus and potassium fertilizer. Artemisia annua has little demand for nutrition in its seedling stage, but when it grows to about 9 true leaves, the amount of fertilizer required will gradually increase. Therefore, we should adjust the water and fertilizer management according to the growth situation of Artemisia annua, to ensure that the growth of Artemisia annua has adequate nutrition, and when the plant grows to about 19 cm, it can be harvested.

2. Apply sufficient base fertilizer

As I just said, the growth period of Artemisia annua is relatively short, the root capacity is strong, but the distribution is not deep, has a strong fertilizer tolerance. Therefore, it is necessary to apply sufficient base fertilizer before planting, and control the amount of base fertilizer according to the planting area, which is mainly based on fully mature farm fertilizer, and then add an appropriate amount of compound fertilizer. Sprinkle it evenly on the surface of the soil, and then prepare the soil. If it is planted in an arch shed, then the bottom fertilizer should be applied in the autumn of the first year to ensure that the soil can fully absorb fertilizer nutrients and improve soil fertility.

3. topdressing at the right time

The growth cycle of Artemisia annua is about 40 days, so our work of topdressing is very important. Although the growth cycle is short, chrysanthemum should be fertilized about three times in the whole growth period. For the first time, when the chrysanthemum seedlings grow to about 9 cm, the fertilizer is mainly ammonium sulfate to improve the growth of the seedlings and enhance the resistance. Then fertilize again when the seedlings grow 3-5 true leaves, and the fertilizer is mainly available nitrogen fertilizer. Finally, when the seedlings grow to about 11 cm, topdressing is carried out together with watering, and the fertilizer is mainly compound fertilizer. Because chrysanthemum chrysanthemum can be harvested many times, we have to apply fertilizer every time we harvest, and the frequency of topdressing should be kept at about 1 week to avoid reducing the quality of chrysanthemum.

4. Points for attention

Artemisia annua is a kind of leafy vegetables, due to the short growth period, many vegetable farmers will ignore the rational application of fertilizer when fertilizing. When applying fertilizer, we should not apply a certain kind of fertilizer, especially nitrogen fertilizer. Excessive nitrogen fertilizer will not only reduce the quality of chrysanthemum, but also increase the nitrate content of chrysanthemum, which is harmful to human health. Therefore, when applying fertilizer, we must pay attention to the reasonable proportion of nutrition, pay attention to the application of phosphorus and potassium fertilizer, ensure the normal growth of chrysanthemum, and avoid the phenomenon of malnutrition.

The above is a brief introduction to the fertilization methods of Artemisia annua. The growth ability of Artemisia annua is very strong, so the demand for nutrition in the growth is very large. Therefore, when we plant, we must meet the nutritional needs of chrysanthemum, strengthen fertilization to ensure the growth of chrysanthemum, and pay attention to watering when fertilizing to prevent chrysanthemum from drying and dying due to lack of water. That's all for today's introduction. This article is for reference only. Thank you for your reading and support.