T/NAASS 093-2024 Active Group standards

T/NAASS 093-2024 Ningxia Dry-Seeded Rice Full-Process Mechanized Technology Specification

T/NAASS 093-2024

Publish Date: 2024-11-09 Implement Date: 2024-12-01 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 093-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Terminology (principles and coordination and cooperation)

Publish Date: 2024-11-09

Implement Date: 2024-12-01

Scope

Scope: This document specifies the standard requirements for the full-mechanized production of dry-sowing rice, including pre-sowing land preparation, mechanical sowing, fertilization, pest and weed control, harvest and drying, and straw processing. This document applies to the full-mechanized production of dry-sowing rice in the Yonghe irrigation area of Ningxia. Main technical content: 3 Terms and Definitions: There are no terms or definitions requiring definition in this document. 4 Pre-sowing land preparation and deep plowing to eliminate stubble: Deep plowing to eliminate stubble should be carried out before the harvest of the previous crop in the autumn. The plowing depth should be ≥30 cm. In early to mid-April, level the land with a grader, ensuring a surface height difference of ≤3 cm. Apply base fertilizer in late April using a strip-sowing machine. After sowing and fertilizing, either rotary tillage or grading should be performed (depth ≥8 cm) to level and break up the soil, achieving a flat surface with loose topsoil and compacted bottom soil. 5 Mechanical sowing: Select suitable dry-sowing rice machinery based on the size of the field. Before operation, adjust the working condition of the sowing machine to meet the indicators specified in Table 1. Table 1: Field operation quality indicators Item Indicator Sowing amount, kg/667m2 11–14 Sowing depth, cm ≤1 Row spacing, cm ±1 Hole spacing, cm ±3 Table 1 (continued) Item Indicator Number of seeds per hole, n ±3 Pass rate of seeds per hole, % ≥87 Pass rate of hole spacing, % ≥75 Seed spacing, cm 5 (under seeding), 3 (side seeding) Note 1: a is the agronomically set row spacing. Note 2: b is the agronomically set planting spacing. Note 3: n is the agronomically set number of seeds per hole. 6 Sowing: Sow from late April to early May when the average temperature stabilizes above 12°C. 7 Top-dressing: Apply urea at 8–10 kg/666.7m2 by drone from late