论文部分内容阅读
1.品种五十～六十年代的日本的北部地区气温条件较好,没出现较大的冷害减产,年年丰收。但是1976年及1980～1983年连续4年出现冷害,就东北地区来讲,为了有效的克服水稻冷害问题,1976～1978年间大规模的进行了延迟型冷害危险度的地域划分测定工作。接着,1980年的冷害年与转机,又进行了障碍型冷害危险度的地区划分测定工作,共划分出五大地带。
1. Varieties Fifty to sixty years in northern Japan, the temperature is better, there is no greater chilling output, annual harvest. However, in 1976 and 1980 to 1983, chilling injury occurred for four consecutive years. In northeast China, in order to effectively overcome the chilling injury problem of rice, the determination of geographical division of delayed chilling injury risk was carried out on a large scale from 1976 to 1978. Then, in 1980, the Year of the Chilling and the turning-point, but also carried out the determination of the danger of chilling hazard regional division, a total of five major areas.