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与杂交籼稻相比,杂交粳稻的研究和发展速度较慢,困扰杂交粳稻发展的主要问题有以下几个方面:一是投入不足,研究力量分散。目前杂交粳稻研究存在的主要问题是科研投入不足、研究力量分散、资源不能共享;育种家之间缺乏沟通、交流与合作;育种单位各自独立、封闭。二是将优质、高产、抗逆等性状有机结合在一起的精品杂交粳稻组合少。与常规粳稻相比,目前生产中应用的大多数杂交粳稻品种综合竞争优势不强,表现为米质较常规粳稻差、产量优势不明显,从而影响了种植者的积极性。
Compared with hybrid indica rice, hybrid japonica rice research and development is slow, the main problems that confound the development of japonica hybrid rice in the following areas: First, inadequate investment, research power is scattered. At present, the main problems in hybrid japonica rice research are the lack of input in scientific research, the diversification of research capacity and the inability to share resources; lack of communication, exchange and cooperation among breeders; and the breeding units being independent and closed. The second is the high quality, high yield, resistance and other traits combined organic fine hybrid japonica rice less. Compared with the conventional japonica rice, most of the japonica hybrid rice varieties used in the present production are less competitive than the conventional japonica rice, showing poor rice quality compared with the conventional japonica rice, and the yield advantage is not obvious, thus affecting the enthusiasm of the growers.