GB/T 14551-1993
Replaced
T/HQDM 007-2023
Active
Group standards
T/HQDM 007-2023 Rice Seedling Substrate
T/HQDM 007-2023
Price:
$ 30
Basic Information
Standard Code:
T/HQDM 007-2023
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
-
ICS Name:
Integrated agriculture and forestry
Publish Date:
2023-09-18
Implement Date:
2023-09-28
Scope
Main technical content: Table 1: Technical requirements for rice seedling substrates Item Standard Bulk density (g/cm3) 0.2–0.8 Electrical conductivity (mS/cm) ≤3.5 pH value 5.5–8.5 Organic matter (dry basis), (%) ≥30.0 Total nutrient content (N + P2O5 + K2O) ≥1.5 Moisture (%) ≤55 Table 2: Limit requirements for rice seedling substrates Item Standard Total arsenic (As, dry basis) (mg/kg) ≤25 Total mercury (Hg, dry basis) (mg/kg) ≤0.5 Total lead (Pb, dry basis) (mg/kg) ≤160 Total cadmium (Cd, dry basis) (mg/kg) ≤0.3 Total chromium (Cr, dry basis) (mg/kg) ≤300 Fecal coliform count (CFU/g) ≤100 Roundworm egg mortality rate (%) ≥95
Development Information
Related Standards
GB/T 15549-1995
Replaced
GB/T 15549-1995 Sensory analysis—Methodology—Initiation and training of assessors in the detection and recognition of odours
GB/T 15790-1995
Replaced
GB/T 15790-1995 Rules for investigation and forecast of the rice blast [Pyricularia oryzae (Cavara)]
GB/T 15792-1995
Replaced
GB/T 15792-1995 Rules for investigation and forecast of the rice stem borer [Chilo suppressalis (Walker)]
GB/T 15794-1995
Replaced
GB/T 15794-1995 Rules for investigation and forecast of the brown planthopper(Nilaparvata lugens Stal) and the white-backed planthopper(Sogatalla furcifera Horvath)
GB/T 16453.1-1996
Replaced