Home / Standards / GB/T 29371.4-2012 GB/T 29371.4-2012 Active Technical rules for seed producing system of two-line hybrid rice - Part 4: Technical rules for F1 seed production 两系杂交水稻种子生产体系技术规范 第4部分：杂交制种技术规范 Standard Type GBT ICS 65.020.20 CCS B21 Status 现行 Issue Date 2012-12-31 Implementation 2013-07-01 Responsible Dept 农业农村部 Drafting Unit N/A