稳步推进“种三产四”丰产工程 促进粮食持续稳定增长

To Enhance Sustainable Increase of Food Production by Steadily Implementing the ″Planting Three to Produce Four″ High-yielding Project of Super Hybrid Rice

超级杂交稻"种三产四"丰产工程已在湖南实施5 a(2007—2011),示范县(市、区)从20个扩大到47个,累计示范推广面积达83.78万hm2,增产稻谷16.54亿kg。总结了"种三产四"丰产工程实施的种植模式、示范组合、主推技术及保障措施,提出了存在的主要问题和对策,并展望了未来的发展计划和前景。

The ＂Planting Three to Produce Four＂ High-yielding Project of Super Hybrid Rice has been successfully carried out for five years （2007 - 2011 ） in Hunan Province. The number of counties （ cities or districts） under demonstration of the project has risen from 20 in 2007 to 47 in 2011, and the cumulative acreage under demonstra- tion of the project has reached 837 800 hm2, on which 1. 654 million tons of rice has been increased, in Hunan Province. The planting patterns, hybrid rice varieties, key applying techniques and supporting measures were all summarized in the implementation of the project. The main existing problems of the project were discussed and the ways to address them were put forward.