特优559产量构成因素及丰产稳产性分析

应用数理统计方法对特优５５９产量构成因素及丰产稳产性进行了分析，结果表明：特优５５９丰产性、稳产性好，适应性强。产量构成因素中以穗数与产量的关系最为密切，对产量的作用最大，其次是每穗总粒数，再次是结实率，千粒重对产量的作用不大。揭示其高产途径和主攻目标是“攻足穗，争大穗，提高结实率，稳定粒重”，使穗、粒、重协调发展，夺取高产。

Analysis of Yield Components, Ability and Stability of Indica Hybrid Rice Teyou 559

The method of mathematical statistics was used to analyst yield components, ability and stability of indica hybrid rice Teyou 559. The results indicated that Teyou 559 showed high yield ability and good stability and adaptability. Among yield components, the number of panicles was closely related with and played the most important role on yield, followed by spikelets per panicle, seed setting rate and grain weight. The way to obtain high yield was to get sufficient panicles, strive for large panicle, improve seed setting rate, stablize grain weight and make panicle, spikelet and grain weight well coordinate.