论文部分内容阅读
通过对铁丰系列大豆的育种及品种推广历程的对比,揭示了铁岭大豆所在不同历史阶段育成品种的推广面积、产量、品质以及亲本选配方面的发展趋势。我们发现不同阶段代表品种推广面积水平相当,基本保持在50万hm2左右;大豆单产上有了明显提高,第一阶段代表品种平均产量为1785 kg/hm2,第二阶段代表品种平均产量为2550 kg/hm2,第三阶段代表品种平均产量为2956 kg/hm2;品质方面有了明显改善,特别是脂肪含量显著提高,目前高油品种数量占育成品种的75%;亲本选配最初以农家品种为主,现在注重选择集丰产、优质、抗逆为一体的中间材料,同时含有国外大豆血缘的材料为亲本。
Through the comparison of Tiefeng series soybean breeding and variety promotion, the popularization area, yield, quality and the development trend of parental selection of Tiereong soybean in different historical stages were revealed. We found that the promotion area of representative cultivars at different stages was quite high, basically keeping at about 500,000 hm 2; the yield of soybean was significantly increased, the average yield of the representative varieties in the first stage was 1785 kg / hm 2, and the average output of representative varieties in the second stage was 2550 kg / hm2, the average yield of representative varieties in the third stage is 2956 kg / hm2; the quality has been significantly improved, especially the fat content increased significantly, the current number of high oil varieties accounted for 75% of cultivars; Lord, now focus on the selection of high yield, high quality, resistance as one of the middle material, at the same time with the material of foreign soybean as the parent.