Home / Standards / GB/T 34967-2017 GB/T 34967-2017 Active Grade of rice cold damage in northern China 北方水稻低温冷害等级 Standard Type GBT ICS 07.060 CCS B18 Status 现行 Issue Date 2017-11-01 Implementation 2017-11-01 Responsible Dept 中国气象局 Drafting Unit N/A