Planting method and time of Radix Astragali

Seed treatment: after drying the seeds for 4 hours, the seeds were mixed with calcium magnesium phosphate fertilizer. Sowing at the right time: sowing every year in the early autumn season. Protect seedlings and promote seedlings: weeding should be done well in the process of growth, which is helpful to promote the robust growth of seedlings. Field management: timely control of water management, during the growth period can be applied farm fertilizer, calcium superphosphate, available nitrogen fertilizer and so on.

I. seed treatment

1. Originally, Artemisia mandshurica has a relatively wide range of wild quantity, so there is no great requirement for soil, so we generally choose to plant it in a cool and fertile soil with sufficient water sources.

2. Before sowing, the seeds should be dried for about 4 hours, and then dry the wax on the surface of the seeds, which is helpful to promote the seeds to absorb water and germinate. after treatment, the seeds are put into salt water to pick out the inferior seeds floating on the water surface, such as dry and diseased seeds.

3. Then soak the healthy seeds in human urine for about 7 hours, air-dry after soaking, and then use calcium magnesium phosphate fertilizer to mix seeds and wait for sowing.

Second, sowing seeds at the right time

The main results are as follows: 1. generally choose to sow in the early autumn season every year, when the temperature and humidity are more suitable for seed germination and emergence, and the sowing time has a great influence on the growth of Artemisia mandshurica.

2. If sowing too early, the symbiosis period with fertilizer will be long, and the growth of seedlings after emergence will be relatively weak, while if sowing too late, the temperature will gradually drop, and the seeds will enter the dormant period, which will lead to a decrease in germination rate.

3. After emergence, it is easy to suffer frost injury, and the survival rate of overwintering is not high. When sowing, we should pay attention to the sowing density and evenly sow to ensure that the seedlings are uniform.

Third, protect seedlings and promote seedlings

The main results are as follows: 1. If sowing in the paddy field, it is generally necessary to avoid rotten fields when harvesting rice, sow the seeds in time after harvest, and then cover the rice straw on Ziyunying, which is helpful to increase the temperature and strengthen the water retention of the soil. promote the healthy growth of seedlings.

2. weeding should be done well during the growth period. if weeds are not weeded in time, weeds will compete for the growth nutrition of the seedlings, resulting in malnourished growth of the seedlings, and if serious, the seedlings may die. Therefore, in order to ensure the healthy growth of Artemisia mandshurica, measures must be taken to protect and promote seedlings.

IV. Field management

1. Ziyunying is afraid of both drought and waterlogging in the growth process, especially in the seedling stage, we need to pay attention to the drainage work, if there is too much water, it is easy to produce rotten buds and rotten seedlings.

2. If the water management is improper, it will affect the growth of the plant rhizome and cause the phenomenon of yellow leaves and fallen leaves, so it is necessary to control the water management in time according to the growth stage and climate of Ziyunying.

3. Ziyunying has a very high demand for nutrition. Generally speaking, it is necessary to apply farm manure in time after emergence, which is beneficial to improve the resistance of seedlings, and fertilizers such as farm manure and calcium superphosphate in December are beneficial to improve the cold resistance of seedlings. The Beginning of Spring can apply appropriate amount of available nitrogen fertilizer and set up the frame according to the growth of the seedlings.