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不同密肥条件对超级稻珞优8号的影响
作者: 叶万余  陈勤平  何永祥  董丽兰  余永国  韦汉文  黎耀军  
单位: (贺州市农业科学研究所  广西贺州 542813)  
关键词: 超级稻  抛栽密度  氮肥水平  生育特性  群体结构  
分类号:
出版年,卷(期):页码:2011 ,42 ( 2 ): 页码:173-176
摘要:

【Objective】The influence of different planting densities and nitrogen fertilizer application on growth and yield characteristics of super rice variety Luoyou 8 has been studied in order to provide a high-yield cultivation technique. 【Method】The treatments have been designed with the combinations of four planting densities @ 4.8×105 (A1), 6.0×105 (A2), 7.2×105 (A3) and 8.4×105 plants/ha (A4), and two nitrogen application levels @ 150 (B1) and 225 kg/ha (B2) to investigate the tillering characters at growing stage, and dry matter production and partitioning and panicle characters and yield components at maturity stage during early season of 2010. 【Result】Significant differences have been observed in yield components in plants treated with different nitrogen fertilizer rates and planting densities. The combination of 4.8×105 plants/ha and 150 kg/ha nitrogen showed the best results. 【Conclusion】The high yields of super rice variety can be achieved by practicing its cultivation with suitable planting density and reasonable nitrogen applications.

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