T/HNSGJXH 0022-2023 Nang mountain navel orange cultivation technical regulations

Scope

Scope: This document specifies the cultivation of Langshan navel oranges, including site selection, seedling planting, tree shape management, fertilization, water management, weed control, pest and disease prevention, flower and fruit management, fruit processing, waste disposal, and file management. This document applies to the cultivation of Langshan navel oranges. Main Technical Content: 3. Terms and Definitions The following terms and definitions apply to this document. 3.1 Langshan Navel Orange Langshan navel oranges refer to early- and medium-maturity navel oranges grown in Ningning County, with a longitude of 110°18’ to 110°28’ and a latitude of 26°15’ to 26°50’. The main varieties include Langfeng navel oranges, Newhall navel oranges, Calabacita red-flesh navel oranges, and Fuben navel oranges. The soluble solids content should be ≥11.5%, and the oranges should exhibit unique quality characteristics such as "orange-red color, smooth surface, rich flavor, fragrance, and good storage". 3.2 Virus-Free Grafted Seedlings Virus-free grafted seedlings refer to citrus grafted seedlings cultivated from virus-free scions and virus-free rootstocks. 4. Site Selection For flat land and slopes with a slope of less than 6°, plant in a north-south direction using a rectangular planting pattern. For hills and mountains with a slope of 6° to 30°, use terrace planting, and for horizontal slopes, apply a gradient of 3‰ to 5‰. Build necessary facilities such as roads, irrigation systems, and sedimentation basins. In areas prone to wind damage, establish windbreaks. 5. Seedling Planting 5.1 Soil Improvement One to two months before seedling planting, improve the soil in the planting pit to a size of 0.8m×0.8m×0.8m. Excavated soil is placed on both sides of the pit, and the topsoil and subsoil are separated and piled separately. Organic matter such as straw, weeds, and husks is added to the bottom layer of the pit. After planting, backfill the pit with

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