果樹修剪英文版ppt課件(參考版)
2025-01-16 14:48本頁面
【正文】 Training and Pruning Basics Objectives and Tools Strong Tree Framework Balanced Renewal Facilitate Management Harvest Sunlight Efficiently Maintain Productivity What happens if you do not prune? ? Faster growth ? Earlier fruiting ? Less light peration ? Poor spray coverage ? More difficult to manage Objectives of training ? A. Establish a strong tree framework ? B. Facilitate management of tree and crop ? C. Harvest sunlight efficiently ? D. Maintain productivity ? by renewing fruiting wood Balanced Renewal A. Establish a Strong Tree Framework ? Upright vertical trunk ? Well distributed scaffolds ? Wide crotch angles Structural Wood Establish a Strong Tree Framework Vertical trunk Well Distributed Scaffolds Establish a Strong Tree Framework ? Wide branch angles are stronger ? Narrow angles are weak and increase shading inside canopy A Strong Tree Framework: ? Major objective of the first three years ? Must last the lifetime of the tree ? Structural support for fruit crop ? Should not be crowded B. Facilitate Management of the Tree and Crop ?Height of primary scaffolds ?Distribute scaffolds well ?Tree uniformity ?Tree size Facilitate Management: 1. Height of Primary Scaffolds ? Access to tree base ? Irrigation, herbicides, fertilizers ? Allow air movement
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