T/YNRZ 022-2024 Rubber Forest Underplanting Turbaned Bladder Yam Ecological Planting Procedures

Scope

Scope: This document specifies the ecological cultivation techniques of bulbous yellow atractylodes under rubber plantations, including rubber plantation selection, planting techniques, field management, and harvest management. This document is applicable to the ecological cultivation of bulbous yellow atractylodes under rubber plantations in Yunnan. Main technical contents: 1. Terminology and definitions: There are no terms or definitions that need to be defined in this document. 2. Rubber plantation selection: - Young rubber plantations (1–6 years): - Mature rubber plantations (row spacing ≥ 2 m × 16 m); - Soil should be fertile, with a slope of <15°, and avoid low-lying areas. 3. Planting techniques: - Adjusting shading: Properly prune rubber trees before land preparation to adjust shading to 40%–70%. - Land preparation: Sprinkle 50 kg of quicklime per mu to disinfect the soil before planting, then use tractors for deep plowing, fine tillage, and ridge formation. The ridge base should be 1.2 m wide, with a ridge face width of 90–100 cm and a ridge height of 30 cm, and a trench width of 30 cm. - Base fertilization: Apply 1,000–1,500 kg of organic fertilizer, 15–25 kg of compound fertilizer (N:P2O5:K2O = 15:15:15 or N:P2O5:K2O = 15:5:15), and 20–30 kg of calcium-magnesium phosphate fertilizer per 667 m2 as a mixed base fertilizer. - Planting giant grass: In November, plant 1 ridge of giant grass along the rows of rubber trees, with a planting interval of 2–3 ridges per ridge. Select whole or truncated giant grass stems and bury them at the ridge face, then compact the soil. If there is water, irrigate to help root establishment. - Planting bulbous yellow atractylodes: Follow the specifications in Chapters 6 and 7 of T/YNRZ 021-2024 for selecting and processing seed tubers. Plant directly on the prepared ridges in April–May of the following year. In water-deficient environments, use porous mulch film for planting. A

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