T/QHNX 045-2024 The technical specifications for rootstock cutting propagation of strawberries on the Qinghai plateau
T/QHNX 045-2024 The technical specifications for rootstock cutting propagation of strawberries on the Qinghai plateau
Basic Information
Scope
Scope: This document specifies the terms and definitions, mother plant cultivation, seedling propagation, and packaging and transportation for the matrix seedling cuttings of strawberries on the Qinghai Plateau. This document is applicable to the matrix seedling cuttings of strawberries grown in facilities at an altitude of 2,100 m to 2,800 m in Qinghai Province. Main technical content: 5. Seedling propagation 5.1 Seedling collection 5.1.1 Collection timing: Start collecting seedlings when there are 3–4 seedlings per creeping stem. Select healthy seedlings free from diseases or mechanical damage, with 2–3 unfolded leaves and several small roots less than 1 cm in length at the base. During production, utilize second- and third-generation seedlings, and grade them by size before planting. See Appendix B for the grading standards of strawberry creeping stem seedlings. 5.1.2 Cutting and refrigeration: Cut the creeping stem (creeping stem axis) near the mother plant end at 2–3 cm and immediately plant the collected seedlings. If not able to plant them in time, store the cut seedlings at 0–0.5 °C and 90–95% relative humidity and finish planting within 10 days. 5.2 Seedling planting and cultivation 5.2.1 Tray selection: Use 24-, 32-, or 50-cell high-legged trays with a depth of 9–13 cm according to actual needs. 5.2.2 Seedling treatment: After seedling collection and grading, first soak the seedlings in a mixture of Amisid (25% Spiroxamine Suspension) at 2000–3000 times dilution and 3% Aliette at 1500–2000 times dilution for 3–5 minutes, then soak them in a mixture of 20% Damexon Emulsion at 2000–3000 times dilution and 2.5% Multisporin Suspension at 1500–2000 times dilution for 3–5 minutes before planting. 5.2.3 Planting method: Insert the seedling roots into the tray substrate and fix them so that they are not buried too deeply or exposed too much. Then thoroughly water the substrate and water the seedlings as needed during planting. 5.2.4 Planting