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中籼新品种扬稻4号(原系号665)是我所采用扬稻2号与7101(杰雅辐射后代)杂交育成的高产、多抗、优质新品种,于1990年春正式定名。据统计,1989年种植面积达10余万亩,1990年已突破100万亩。现将该品种特点及主要栽培技术介绍如下:
The new indica rice variety Yangdao No.4 (formerly No. 665) is a new high - yield, multi - resistant and high quality new variety which was developed by a hybrid between Yangdao 2 and 7101 (a. According to statistics, the planting area in 1989 reached more than 10 million mu and in 1990 it exceeded 1 million mu. Now the characteristics of the varieties and the main cultivation techniques are as follows: