T/YNRZ 011-2025 Active Group standards

T/YNRZ 011-2025 Mango Orchard Rehabilitation Technical Regulations for Old Orchards

Publish Date: 2025-07-18 Implement Date: 2025-08-02 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/YNRZ 011-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Technical management

ICS Name: Plant cultivation

Publish Date: 2025-07-18

Implement Date: 2025-08-02

Scope

Scope: This document specifies the technical requirements for the transformation of old mango orchards, including the transformation objects, goals, techniques, soil management, water and fertilizer management, flower and fruit management, pest and disease control, mechanical application, and harvesting. This document applies to the transformation of old mango orchards. Main technical content: 1. Transformation objects: Trees aged over 10 years with low fruit set rates, severe pests and diseases, low yields, and poor quality; planting density > 33 trees/acre, spacing < 3 m, row spacing < 4 m, tree height > 3 m, terminal branches > 300, inter-tree overlapping branches ≥ 40%, and inter-row crossing branches ≥ 30%; varieties unsuitable for market demand and irrational variety structure, with a high-quality fruit rate of ≤ 60%. 2. Transformation goals: Planting density 27–33 trees/acre, crown with a rounded shape, trunk height 0.8–1.2 m, spacing 4.0–5.0 m, row spacing 5.0–6.0 m, tree height ≈ 3.0 m, terminal branches 200–300, inter-tree overlapping branches ≤ 30%, and inter-row crossing branches ≤ 10%; rational variety structure and a high-quality fruit rate of > 80%. 3. Transformation techniques: 3.1 Thinning: 3.1.1 Time: Thinning can be carried out throughout the year. Except for winter, transplantation can be done under water-sufficient conditions. Non-viable plants can be removed throughout the year. 3.1.2 Scheme: Determine the target density based on the orchard's variety, tree age, and site conditions, and adopt "skipping and digging out trees," plum-blossom-style thinning, or selective thinning. 3.1.3 Methods: Specific operation methods are as follows: 1) For transplantable plants: In the month before spring, cut off all roots 20–100 cm outside the main trunk and 30–80 cm below the trunk, according to the plant's size. After root pruning in January–February, carefully transplant the pruned plants to areas requiring replanting or new planting. 2) For thinned pla