T/HVIA 004-2022 Active Group standards

T/HVIA 004-2022 Precision irrigation technical regulations for vegetable peppers in facilities

Publish Date: 2022-11-29 Implement Date: 2022-11-29 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/HVIA 004-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Plant cultivation

Publish Date: 2022-11-29

Implement Date: 2022-11-29

Pages: 5 pages

Scope

Scope: This document specifies the terms and definitions, irrigation systems, irrigation principles, irrigation timing, and irrigation amounts for precision irrigation of greenhouse solanaceous vegetables in Hebei Province. Main technical content: 3. Terminology and definitions: The following terms and definitions apply to this document. - Surface irrigation diameter: The diameter of the surface water diffusion range in the soil during drip irrigation. - Irrigation system: Install an IoT-controlled drip irrigation system in the greenhouse. - Irrigation principles: Based on the principle of "water follows the root", i.e., the irrigation water coverage range should correspond to the root growth range. Under drip irrigation conditions, the surface irrigation diameter should meet the root depth requirements, and the irrigation water quality should comply with GB 5084. - Irrigation timing: - From early October to mid-March of the following year, irrigate on sunny mornings. - From late March to early June, when the nighttime temperature outside the greenhouse stabilizes between 12°C and 16°C, irrigate throughout the day on sunny days. - From mid-June to the end of September during the high-temperature season, irrigate after 16:00. - Do not irrigate 3 days before or after pruning; do not irrigate during rainy days; and do not irrigate during high-temperature scorching conditions. - Irrigation amounts: - Irrigation depth for solanaceous vegetables: - Eggplant: 15cm to 30cm in the cultivation layer; - Tomato: 10cm to 25cm in the cultivation layer; - Chili: 15cm to 25cm in the cultivation layer. - Surface irrigation diameter during seedling stage: 15cm to 20cm, with appropriate increases as the plants grow. - Start irrigation when the soil moisture reaches 60-65% as measured by soil sensors, and stop irrigation when the soil moisture within the irrigation diameter range reaches