广抗13A是三明市农科所选育成的广谱抗稻瘟病籼型水稻三系不育系,于2003年10月通过福建省科技厅科技成果鉴定。具有不育度高,育性稳定,广谱抗性较好的特点,且耐肥性强,主穗与分蘖穗差异较大,稻穗的颈部对“九二○”反应较钝感。根据对其不同的喷施时期与不同用量进行效果试验表明:广抗13A对“九二○”喷施时期以田间抽穗率10%～15﹪,喷施用量以20～30g/667m2为宜。 Guang-an 13A is a broad-spectrum Blast resistant indica rice CMS line selected and bred by Sanming Agricultural Science Bureau. It was appraised through scientific and technological achievements of Science and Technology Department of Fujian Province in October 2003. With high sterility, stable fertility, broad-spectrum resistance is better, and the resistance to fertility, the main spike and tiller spike larger, the neck of rice on the sense. According to its different spraying period and different amount of effect experiments showed that: Guangzhou anti-13A on the “nine two ○” spraying period of field heading rate of 10% to 15%, spraying the amount of 20 ~ 30g / 667m2 should.