T/NAASS 107-2024 Technical Specifications for Mechanical Weeding in Winemaking Grape Vineyards in Ningxia

Scope

Scope: This document specifies the terminology and definitions, operating conditions, weed removal, and safety requirements for mechanical weed control in wine-grape vineyards in Ningxia. This document applies to mechanical weed control operations in Ningxia under the trellis cultivation model. Main technical content: 3. Terminology and definitions: The following terms and definitions apply to this document. - Grape weeding machine: A machine that cuts, crushes, and places weeds in the inter-row and inter-plant spaces of grapevines at or above the root level. It can be divided into suspended, self-propelled, and gantry types based on its structure. - Weed removal rate: After inter-plant weed removal, the percentage of weeds in the sampled area divided by the total number of weeds is measured. After inter-row weed removal, the percentage of weed mass or quantity in the sampled area divided by the total mass or quantity of weeds is measured. - Injury rate: After weeding, select 10–15 main grapevine stems and investigate the percentage of grapevine stems with damaged or broken bark due to weeding operations. 4. Operating conditions: - Grape main stems: The diameter of main stems should be ≥25 mm. - Grape main stems and ground angle: ≥25°, inter-plant spacing ≥60 cm, inter-row spacing ≥3 m, and first trellis wire height ≥20 cm (trellis cultivation model). - Plot inter-row height difference ≤20 cm, and inter-plant trench bottom to ground distance ≤25 cm. - Good machine traversability. - Inter-row weeding: Use cutting methods above the root level, selecting suspended or self-propelled weeders. - Inter-plant weeding: Use root-cutting methods, selecting weeders with obstacle avoidance functions (gantry or suspended types). - For sandy loam soil, use weeders with fixed (straight) blades. For other soils, select weeders based on actual conditions. 5. Weeding preparation: - Before entering the working area, remove obstacles that hinder machine

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