Key Points of Summer Cutting Propagation Techniques for Pomegranate
1. Site selection: Choose a place with flat terrain, convenient transportation, irrigation access, and shelter from the wind with good sun exposure. When establishing the orchard, avoid areas and orientations where the minimum winter temperature drops below 16°C, especially trough-shaped valleys and basins where cold air tends to accumulate. 2. Planting density: Pomegranate trees are generally 2-4 m tall, depending on different...
1. Cutting time: In summer, use lignified or semi-lignified green branches for cutting propagation of pomegranate seedlings, mostly carried out in June to July.2. Selection of green branches
Generally in the early morning or on windless cloudy days, from superior mother plants that bear many fruits, have good quality, and are robust in tree vigor, cut sturdy green branches with no pests or diseases that are newly lignified from the current year's growth, with a thickness of 0.8-1.5 cm being appropriate.
3. Cutting and chemical soaking
In a cool shaded place, cut the branches into 15-20 cm cuttings. To prevent water evaporation, keep two leaves on the upper part. Bundle every one hundred together, and immediately place the lower end of the cuttings in a 500 mg/L naphthalene acetic acid (NAA) solution or soak in a 5% sucrose solution for 3 minutes.
4. Timely cutting
Take the cuttings that have been soaked in the chemical agent and promptly insert them into a seedbed with river sand as the substrate, 120 cm wide. At a plant-row spacing of 10 cm × 30 cm, insert the cuttings obliquely into the soil, with the upper end exposed by 1/3.
5. Watering and shading
After cutting, water and provide shade 50-80 cm above the seedbed. Thereafter, spray water once each morning and evening every day to maintain soil moisture. After the cuttings have rooted and begun to grow new leaves, gradually remove the shade structure.
6. Seedling stage management
When the seedlings are 2 cm tall, apply 5-7.5 kg of urea per mu of seedbed. Promptly remove excessive sprouts, leaving 1-2 new shoots. Loosen the soil and weed to accelerate seedling growth. In September, control nitrogen fertilizer and increase phosphorus and potassium fertilizer to promote the maturation of seedling branch tissues and prevent excessive vegetative growth.