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1品种选育上海杂交粳稻自20世纪90年代起,二十余年来每年的种植面积一直稳定在2.0万~3.3万hm2,其杂交粳稻种植面积占水稻总面积比例一直处于全国最高水平。杂交粳稻应用于生产不但要有高产、优质、多抗的新组合,还依赖于种子生产、现代栽培技术的不断完善,杂交稻制种是杂交水稻推广过程中最为重要的环节,杂交种子的质量和产量,直接影响着杂交水稻增产效果和发
1 Breeding Shanghai Hybrid Japonica Rice Since the 90s of the 20th century, the annual acreage has been stable at 20,000 ~ 33,000 hm2 for more than 20 years. The proportion of its hybrid rice planted in Japonica rice has always been the highest in China. Hybrid japonica rice is not only used in the production of new combinations of high yield, high quality and multi-resistance, but also depends on the seed production and the continuous improvement of modern cultivation techniques. Hybrid rice seed production is the most important link in the promotion of hybrid rice. The quality of hybrid seeds And yield, a direct impact on yield and yield of hybrid rice