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在耕作制度的改革中,随着水田复种指数的提高,晚稻品种的改良是一个重要环节。我所于1964年开始晚稻育种工作,十多年来选出了早熟、高产、抗病、好脱粒的宜粳1号、“105”、“5108”、“5025”等晚粳品种,适应了晚稻生产的不断发展的需要。现就我们的工作体会,对晚稻育种目标和途径提出以下几点粗浅看法。 一、根据生产需要,确定育种目标 五十年代末期到六十年代初,水稻生产处于重大的技术改革时期。在晚稻生产方面,由晚粳品种取代了晚秈农家品种,从而使产量有突破性的提高,双季稻面积飞跃发展。但来源于江苏太湖流域的典型晚粳如“10509”等生长期嫌太长。这个时期,红
In the reform of farming system, the improvement of late rice varieties is an important link with the improvement of multiple cropping index in paddy fields. I started late rice breeding in 1964 and selected early maturity, high yield, disease-resistant and threshing varieties of late japonica rice varieties such as Yijing 1, “105”, “5108” and “5025” for more than ten years. The continuous development of late rice production needs. Now on our work experience, late rice breeding objectives and ways to make the following superficial view. First, according to the production needs, to determine breeding goals The late fifties and early sixties, rice production is in a period of major technological reform. In terms of late rice production, the late indica rice variety replaces the late indica rice variety, which leads to a breakthrough in yield improvement and a double-cropping paddy area. However, the typical late japonica rice from the Taihu Lake basin in Jiangsu Province, such as “10509” and other growing too long. This period, red