Detailed Explanation of Nine Measures for High-Yield Pomegranate Cultivation
1. Site selection: choose a warm, sunny, wind-sheltered site with good drainage and neutral or slightly acidic soil; slightly clayey soil is best. Heavy clay soil leads to thick, coarse rind, black spots, and fruit cracking; insufficient light leads to poor growth, small fruit, bland taste, and low yield; when the temperature drops to -18°C, it is prone to freezing injury.
2. Superior varieties: choose Dahongtian, Jingpitian, Tianhongdan, Shuijingjiang, Manaozi, Wangshizi, Yanzhihong, Fenhong, Ruanzidazi, and Damayatian; use vigorous 1-2 year old seedlings with a trunk diameter of more than 1 cm and roots more than 15 cm long.
3. Spring planting: plant just as buds begin to sprout for good survival and fast growth; autumn planting is prone to freezing injury and shoot dieback.
4. Density: where site conditions are good, for mid-season varieties, 3 m x 5 m or 5 m x 5 m; where site conditions are poor, for late-maturing varieties, 3 m x 4 m or 4 m x 4 m.
5. Tree form: train an open-center shape with a trunk height of 0.8-1.0 m; distribute 3-5 main branches on the trunk, each main branch bearing 2-3 lateral branches, with fruiting branches evenly distributed on the main and lateral branches.
6. Bud pruning: before budbreak, remove overly dense, overlapping, water-sprout, pest-damaged, and dead branches, as well as basal sprouting shoots. Shorten extension branches (cut back to leave 25-40 cm) and 2-3 year old fruiting branches.
7. Flower management: the key to high yield lies in flower-stage management.
Pinching: when new shoots are 30-40 cm long, pinch off 1/3; for small flower branches, remove the shoot tip 2-3 pairs of leaves above the flower, generally removing 5 cm from the tip of flowering branches.