Breeding methods and cultivation techniques of Fangfeng

Method of reproduction: reproduce with seeds.

1. Soil selection and soil preparation are deep-rooted plants. It is better to choose sandy loam with good drainage, loose and dry. Apply topdressing 3000kg every 667m2, plough 20~30cm deeply, fine and level, and make a border 1.2m wide.

two。 After the seeds were harvested and sown, they did not blossom and bear fruit in the same year. When ploughing and harvesting medicinal materials in autumn, disease-free and sturdy roots can be selected for planting seedlings. Or select more than 2-year-old plants with strong growth and no diseases and insect pests as seed plants in autumn. From August to September of the following year, when the seeds changed from green to yellowish brown, they were cut off and dried in the sun, and the seeds were laid down and stored. Immature seeds have a low or no germination rate. The germination rate of fresh seeds is 50%-70%; if the seeds are stored for more than one year, the germination rate is low and even cannot be planted.

3. Sowing methods can be sowed in spring or autumn.

The main results are as follows: (1) soak the seeds in warm water for 1 day before sowing, keep a certain humidity after being removed, and sow when the seeds begin to sprout.

(2) sowing in autumn from September to October, according to the row spacing of 30cm, the shallow ditch of 1~1.5cm was opened along the border, and the seeds were evenly sown in the ditch, covered with soil, slightly suppressed and watered. When the temperature is 25-28 ℃, keep the soil moist and the seedlings can emerge in about 20 days. Spring sowing from late March to mid-April, the method is the same as above. Autumn sowing is better than spring sowing. Autumn sowing produces strong, powdery and non-trenching. The seed dosage is 2.5kg per 667m2.

Cultivation management:

1. When the seedling height is 6cm, the seedling height is 5cm, and when the seedling height is 10cm, the seedling is fixed according to the plant distance 15cm.

2. After weeding and emergence, the weeding of intertillage should not be too deep. With the growth and height of seedlings, intertillage can be deepened, and the root growth is mainly thickened after August. At this time, the plant should be closed and weeding should be stopped.

3. Topdressing applied light human and animal manure water once in the middle of May, slightly thicker human and animal manure water 2000kg per 667m2 at the beginning of August, or compost mixed with calcium superphosphate.

4. Drainage and irrigation has strong wind and drought resistance, and generally does not water. But before emergence, it is necessary to keep the soil moist and promote the emergence of seedlings neatly. Pay attention to timely drainage in the rainy season to prevent rotting roots.

5. Bolting plants for more than two years, in addition to leaving seeds, it is found that bolting should be removed in time to facilitate root development, prevent root Lignification and reduce the quality.