水稻新品种特优679的穗粒结构与物质生产特点及其高产栽培技术

Characteristics of Yield Component and Dry Matter Production of Three-line Rice Teyou 679 and Its High Yield Cultivation Technology

以桂两优二号、特优63为对照,研究了水稻新品种特优679的穗粒结构特点和物质生产特性。结果表明,与桂两优二号、特优63相比,特优679的有效穗较多、每穗总粒数较少,穗粒结构协调;其总干物质积累能力较弱,但其干物质运转能力较强、经济系数高;其产量与桂两优二号持平,比特优63增产12.7%,品种间的产量差异不显著。根据特优679的穗粒结构特点和物质生产特性,提出了特优679的高产栽培技术要点。

Field experiment was conducted to explore the characteristics of yield component and dry matter production of three-line rice Teyou 679 with Guiliangyou 2 and Teyou 63 as the control in 2011. Results indicated that compared with Guiliangyou 2 and Teyou 63, Teyou 679 revealed more effective panicles, less grains per panicle and harmony yield component, and showed less dry matter accumulation, greater dry matter transportation after heading and greater harvest index. Teyou 679 had equal yield with Guiliangou 2 and 12.7% more yield than Teyou 63. However, the differences of grain yield among varieties were not significant. Finally, high yield cultivation technology of Teyou 679 was proposed according to its characteristics of yield component and dry matter production.