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青铁矮是广东省汕头地区农科所,用“窄叶青8号”与“铁骨矮1号”杂交育成的早籼迟熟新品种。一九七八年云霄县从该所引进试种,表现产质兼优,抗性较好。一九七九年早季在沿海、平原扩大示范200亩,曾获丰收。一九八○和一九八一年陆续扩大到4.2万亩,占全县早稻面积的30％,成为当家品种。一九八二年预计全县种植面积可扩大到5万亩。在龙溪地区其它县的沿海平原地区,该品种也已成为当地的当家种。
Qingtizhai is a new indica late maturing variety developed by the Agricultural Science Institute of Shantou in Guangdong Province. It is a hybrid of “Zayyeqing 8” and “Tiegutai 1”. In 1978, Yunxiao County introduced trial planting from this institute, showing good quality and good resistance. In the early part of 1979, a demonstration area of 200 mu was expanded on the coastal and plains and a bumper harvest was received. 1980 and 1981 gradually expanded to 4.2 million mu, accounting for 30% of the area of early rice in the county, become the mastermind varieties. In 1982, the area planted in the county is expected to be expanded to 50,000 mu. In the coastal plains of other counties in Longxi Prefecture, the breed has also become a local species.