Home / Standards / GB/T 23391.1-2009 GB/T 23391.1-2009 Active Technical specification for control of northern corn leaf blight，southern corn leaf blight and asian corn borer - Part 1: Northern corn leaf blight 玉米大、小斑病和玉米螟防治技术规范 第1部分：玉米大斑病 Standard Type GBT ICS 65.020 CCS B16 Status 现行 Issue Date 2009-03-27 Implementation 2009-10-01 Responsible Dept 农业农村部 Drafting Unit N/A