水稻旱育稀植高产机理和调控技术Ⅰ.水稻旱育稀植高产机理研究进展与展望

The mechanism of high-yielding in rice under dry-raising and thin-planting and its regulating technique Ⅰ.Advances in the mechanism of high-yielding in rice under dry-raising and thin-planting and its prospects

简要概述了水稻旱育稀植技术理论依据和研究必要性，着重评述了水稻旱育稀植高产机理的研究进展，并结合生产上存在的问题，指出今后水稻旱育稀植高产机理研究的方向，即：（1）对肥床旱育所形成的苗床微生态环境与秧苗素质的关系；（2）对旱育秧根系生长优势与地上部器官及产量形成的关系；（3）对旱育稀植的群体质量发育特性与其产量形成的关系．

The general developping situation of rice cultivation by dry-raising seedling and thin-planting in China and its theorical base are briefly introduced. The advances in the mechanism of high-yielding in rice under dryraising and thin-planting were mainly reviewed. Besides that, the problems were analysed and the directions for further studies were also suggested, which were: (1) the relation between microecological environment in dryraising bed with fertilizing and seedling quality; (2) the relation between root advantages of dry-raising seedling and formation of organs and yield; (3) and the relation between high-yielded populational quality under dry-raising and thin-planting and its formation of yield.