论文部分内容阅读
1984年全区种植秋岭A×C_(57)杂交稻56564亩,又获丰收。据统计平均亩产1354.3斤,其中灵武县种植9384亩,亩产1481.5斤,比京引39号增产41.8％;其它县、市亩产也多在1300斤以上。根据1984年各县的实践,提出以下几个问题供商榷。一、制种和繁殖技术 (一)不育系纯度问题 1983年我区引进的秋岭A经精心去杂,但纯度仍不够高。1984年永宁县繁种田的秋岭A有17.9％、关马湖农场有27.6％为结实完全正常的植株。也就是说1983年精选后的
In 1984, a total of 56564 mu of hybrid rice QiuLing A × C_ (57) was planted in the area, which was bumper harvest. According to the statistics, the average yield per mu is 1354.3 kg, among which 9384 mu is planted in Lingwu County, 1,481.5 kg per mu and 41.8% higher than that of No. 39 in Beijing. Other counties and cities have an output of more than 1300 kg per mu. According to the practice of all counties in 1984, the following questions are put forward for discussion. First, the seed and breeding techniques (A) the purity of sterile lines Qiu Ling in our district in 1983 introduced a carefully mixed, but the purity is still not high enough. In 1984, there was 17.9% of Qiu Ling A in Fanning County, and 27.6% in Guanma Lake Farm, which was a completely normal plant. That is, after the 1983 selection