关键词: 籼粳杂交晚稻, 品种, 发展历程, 展望

Abstract:

Yongyou 6, the first strong heterosis of indica-japonica hybrid rice variety, was registered and released for commercial production in Zhejiang Province in 2005. Since then, the new concepts and technologies have been innovating to solve the problems of indica-japonica hybrid rice varieties, such as longer growth period, higher plant height and serious rice false smut. Meanwhile, the demonstration and test were conducted to strengthen the breeding, register and extension for the indica-japonica hybrid rice in Zhejiang Province. By 2015, the twenty-one indica-japonica hybrid rice varieties were registered and 1 101.7 thousands hm2 paddy field was planted. In 2015, the whole area of indica-japonica hybrid rice was up to 211.2 thousands hm2 and occupied sixty percent of total hybrid rice of Zhejiang Province. And now, Zhejiang Province already has fourteen institutes and companies being bred the indica-japonica hybrid rice varieties which adapt different kinds of paddy field, crop rotation, fertilizer application and plant protection.

Key words: indica-japonica hybrid late rice, cultivar, developing, prospect