T/NAASS 139-2025 Active Group standards

T/NAASS 139-2025 Code of practice for east-west ridge cultivation of strawberry in greenhouses

Publish Date: 2025-11-06 Implement Date: 2025-12-05 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/NAASS 139-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Technical management

ICS Name: Plant cultivation

Publish Date: 2025-11-06

Implement Date: 2025-12-05

Scope

This document specifies the terms and definitions for the east-west ridge cultivation of strawberries in solar greenhouses, the requirements for solar greenhouses, varieties and seedlings, soil treatment, ridge formation, field management, pest and disease control, and harvesting techniques. This document is applicable to the soil-based cultivation of strawberries in solar greenhouses in Ningxia. 3 Terms and Definitions The following terms and definitions apply to this document. 3.1 East-West Ridge Cultivation A production model in which strawberries are grown in east-west ridges in solar greenhouses. 4 Requirements for Solar Greenhouses The length of the solar greenhouse is determined by the size of the terrain and plot. The net span is ≥9 m, and the ridge height is ≥4 m. The height of the frame from the front base angle 0.5 m should be ≥1.5 m. Provide entrances and exits for agricultural machinery, with a door height of ≥2.5 m and a width of ≥2.2 m. Water storage tanks and ventilation and shading facilities should be well-equipped. The irrigation water meets the requirements of GB 5084, with an EC value ≤0.8 mS/cm. 5 Varieties and Seedlings Select varieties with short dormancy periods, disease resistance, high yield, and good marketability. Seedlings should have a stem height of 15–20 cm, four to six leaves, a root neck diameter of 1.3–1.6 cm, and white or slightly yellow roots, free from diseases and pests. 6 Soil Treatment 6.1 Application of Base Fertilizer Apply 10 tons of raw sheep manure and 60 kg of calcium nitrogen per 667 m2. Apply 10 m3 of corn straw (5–10 cm in length) per 667 m2. Till the soil to a depth of 15–25 cm and mix the base fertilizer, straw, and soil. The quality of the fertilizer meets the requirements of GB 20287, NY/T 496, and NY 884. 6.2 Steaming the Greenhouse After tilling, irrigate with water until it reaches a depth of 5–8 cm above the soil surface. Cover with plastic film and close the greenhouse for