What are the key points of Dictamnus dasycarpus planting technology?

Dictamnus dasycarpus bark, also known as mountain peony and bagu niu, is a relatively common medicinal herb for clearing heat and detoxifying, and the cultivation value of Dictamnus dasycarpus bark is relatively high, so many people are planting it. So what are the planting techniques for Dictamnus dasycarpus bark?

1. Site selection and land preparation

Dictamnus dasycarpus is generally propagated by seed, first with centralized seedling raising, and then divided and replanted after growing for one to two years. For seedling raising, choose flat ground or gentle slopes with sandy loam that has sufficient sunlight, fertile and loose soil, and good drainage. Saline-alkali land and continuous cropping land must not be chosen, and irrigation and drainage conditions are also required. Generally, deep plowing is done to 25 to 30 cm, and then fully decomposed farmyard manure is applied according to the fertility conditions. When transplanting, choose gently sloping land with good drainage, and it can be cultivated on hillside wasteland, in orchards, and in artificial young forests.

2. Sowing and transplanting

Dictamnus dasycarpus is generally sown from mid-April to early May. When sowing, rake the bed surface level, open furrows at a row spacing of 12 to 15 cm, with the furrows 4 to 5 cm deep. After pressing the bottom of the furrow firmly, sow the seeds together with fine sand, then cover with 4 to 5 cm of soil. If conditions permit, add rice straw to retain moisture. After the seedlings of Dictamnus dasycarpus have grown for 1 to 2 years, they can be transplanted after the aboveground parts wither in autumn or before they turn green again in spring. When transplanting, dig out all the seedlings and transplant them by size categories, with the terminal buds facing upward and the seedling roots spread out. The soil should cover the bud tips by 4 to 5 cm, and water thoroughly during drought.

3. Daily management

1. Light and water: Dictamnus dasycarpus generally grows on sunny hillsides in gravelly soil among low shrubs. It has relatively strong adaptability, likes warm and humid places, and likes light. It is cold-resistant and drought-resistant, but not waterlogging-resistant.

2. Weeding: In the first two years after transplanting Dictamnus dasycarpus, remove weeds whenever they are seen. Weeding is needed 3 to 4 times each year. After 3 years, when the plants have grown taller, the impact of weeds on the seedlings is relatively small, so weeding can be reduced.

3. Fertilization: Dictamnus dasycarpus should be topdressed 2 times from late May to early June, each time with farmyard manure or urea. After the Beginning of Autumn, spray 0.3% to 0.5% potassium dihydrogen phosphate foliar fertilizer 1 time.

4. Pest and disease control: Common pests and diseases of Dictamnus dasycarpus include downy mildew, sclerotinia disease, rust disease, and yellow swallowtail butterfly, etc. Corresponding pesticides need to be sprayed according to the actual situation.

4. Harvesting

After transplanting, Dictamnus dasycarpus grows for 2 to 3 years. Harvest the roots after the aboveground parts of the plant wither in autumn or before the plant turns green again the next spring. First cut off the aboveground stems and leaves, then starting from one end of the seedling bed, dig out all the roots, remove soil and residual stems. Dry them in sunlight until half-dry, then remove the fibrous roots, extract the central xylem, and store them after drying completely. Generally, one mu can produce 300 to 350 kg of Dictamnus dasycarpus bark.

The planting and daily management of Dictamnus dasycarpus bark are relatively simple, and the harvest from planting is also relatively considerable, so it can be planted in large quantities.