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近几年来,人们发现以往栽培面积甚广的若干地方良种,发生不同程度的混杂、退化,有的几乎断种失传。这些良种一般都具有抗逆性较强、适应性较广、稳产保收的特点,在短时期内不可能为推广种所代替,而且其栽培技术和经济性能,又为广大农民群众所熟知。因此,积极整理、提纯现有地方良种,使之尽快应用于生产,是当前水稻品种工作的重要一环。1968、1964两年,我们对此项工作做了初步尝试。现将一些体会整理如下,供各地参考。
In recent years, people have found that several local cultivars that used to be widely cultivated in the past have been mixed and degraded in varying degrees and some have been almost lost in breed. These improved breeds generally have the characteristics of strong resistance, wide adaptability and stable yield. They can not be replaced by popularized species in a short period of time, and their cultivation techniques and economic performance are well known to peasant masses. Therefore, it is an important part of the current rice variety to actively organize and purify the existing good varieties and make them be applied to production as soon as possible. In 1968,1964 years, we made a preliminary attempt to this work. Now some experience finishing as follows for reference.