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不同施氮量对百优838生理特性及生长发育的影响
作者: 何永祥1  陈勤平1  叶万余1  黄世旅1  赵金卫1  林志豪1  余永国1  韦汉文1  唐茂艳2  
单位: (1 贺州市农业科学研究所  广西 贺州 542813;2广西农业科学院水稻研究所  南宁 530007)  
关键词: 百优838  氮肥  生育特性  产量  
分类号:S511.062
出版年,卷(期):页码:2012 ,43 ( 6 ): 页码:788-791
摘要:

【Objective】Effects of different rates of nitrogen fertilizer on growth and physiological characteristics of rice variety Baiyou 838 were investigated in order to provide best cultivation regulation and population control in Baiyou 838 and similar superior rice cultivars. 【Method】A randomized block experiment was conducted using six different nitrogen fertilizer dosage(0, 90, 150, 210, 270 and 330 kg/ha N) to investigate the growth dynamics of stem, tillering and panicle and yield during growing season. 【Results】The good population with high net dry matter content and yield was found in Baiyou 838 under low nitrogen fertilizer treatment. N application 90 kg/ha gave the highest yield (8390.4 kg/ha), and this treatment was also beneficial for controlling tillering and stem dynamic as well as net dry matter content. The yield was the lowest in treatment applied with 330 kg/ha. 【Conclusion】The rice variety Baiyou 838 was found sensitive to different nitrogen application rates, however, N application 90 kg/ha was found to be the best dose for rice cultivation.

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