Detailed Explanation of Key Technical Points for Eucommia ulmoides Cutting Propagation

Eucommia ulmoides generally uses seed propagation, but propagation by cuttings has the advantages of good quality and high economic benefit.

1. Cutting time. Generally, cutting in May to June is suitable, carried out in the early morning or evening or on cloudy and rainy days, with a plant and row spacing of 8-10 cm, and the branches inserted into the soil 3-4 cm. After cutting, a frame should be built for shade, keeping moisture and preventing the cuttings from wilting.

2. Preparation of cuttings. Strong, tender, non-lignified shoots from healthy young trees should be selected as cuttings. Remove the terminal buds 10 days before collection; when cutting, keep 3 leaves, and cut half of each leaf off with scissors to reduce water evaporation from the leaf surface; soak the cuttings in clean water for one day so they absorb enough water, which helps them resist drought and survive the summer. Using rooting powder gives better results.

3. Selection of nursery land. Choose loose, fertile, well-drained, wind-sheltered and sunny slightly acidic sandy soil as the nursery land. Prepare the land finely, apply 300 kg of decomposed farmyard manure per mu as base fertilizer, mix the soil and fertilizer evenly, then make seedbeds 2 m wide and 30 cm high, and spray water regularly to keep the soil moisture content at about 15%.

4. Strengthen management. One month after the cuttings are inserted into the soil, they can gradually take root. Check the seedling condition regularly, remove weeds, and at the same time apply a thin application of decomposed human urine and manure to promote seedling growth.

5. Pest and disease control. Focus on prevention, with comprehensive and timely control.

Generally, the cuttings in the same year can grow to 80-100 cm high, and the seedlings are thick and strong, and can be planted in early spring of the next year.