“植20-5”是广东省农科院植保所水稻白叶枯病研究组用“桂朝2号”与“IR29(籼糯)”杂交选育成的早稻中迟熟新品种(籼稻)。1985年早造中试面积达6000亩左右。7月19—20日根据省农业厅、农科院、华南农业大学、梅县、惠阳地区、东莞、番禺县农业部门的有关专家、教授和科技人员共20余人,先后到番禺县大石、石楼区和东莞县虎门区现场 “Plant 20-5” is a late-maturing late-maturing variety (indica rice) of early rice cultivars bred by “Guichao No.2” and “IR29 (Indica)” hybrid rice plants of the plant protection research institute of Guangdong Academy of Agricultural Sciences. Early 1985 pilot area of ​​6,000 acres or so. July 19-20 According to the provincial agricultural department, Academy of Agricultural Sciences, South China Agricultural University, Meixian, Huiyang, Dongguan, Panyu agricultural sector experts, professors and scientific and technological personnel a total of more than 20 people, went to Panyu County, stone, stone floor District and Dongguan Humen District scene