中国稻米

中国稻米 ›› 2015, Vol. 21 ›› Issue (4): 88-90.DOI: 10.3969/j.issn.1006-8082.2015.04.019

• 专论与研究 • 上一篇    下一篇

控释肥用量对水稻干物质积累和产量的影响

  1. 1云南省农业科学院粮食作物研究所，昆明 650205；2 陆良县农业技术推广中心，云南 陆良 655600；3陆良县三岔河镇农业综合服务中心，云南 陆良 655603；4文山市农业技术推广中心，云南 文山 663099；5麻栗坡县种子管理站，云南 麻栗坡 663699；6孟连县农业技术推广中心，云南 孟连 665800；7勐腊县农业技术推广中心，云南 勐腊 666300
  • 出版日期:2015-07-20 发布日期:2015-07-20
  • 通讯作者: 杨从党
  • 基金资助:

    农业部公益性行业（农业）科研专项（201303102，20130129）；国家科技支撑计划（2012BAD40B00）；云南省院省校科技合作专项（2013IB011）；云南省现代农业水稻产业技术体系；云南省创新人才培养计划（2011CI058）

Effects of Different Controlled-release Fertilizer Amount on Dry Matter Production and Grain Yield of Rice

  • Online:2015-07-20 Published:2015-07-20

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摘要： 本文研究了不同控释肥用量对水稻干物质积累及产量的影响。试验结果表明，随着控释肥用量的增加，水稻抽穗后干物质积累量和产量先增加后降低；参试籼稻在控释肥用量为600 kg/hm2时获得最高产，为12.20 t/hm2，比不施肥处理增产5.89 t/hm2，差异显著，其抽穗后干物质最大积累量为595.36 g/m2，肥料最大贡献率为48.23%；参试粳稻在控释肥施用量为750 kg/hm2时获得最高产，为9.33 t/hm2，比不施肥处理增产2.33 t/hm2，差异显著，其抽穗后干物质最大积累量为566.62 g/m2，肥料最大贡献率为25.00%；籼稻控释肥用量超过600 kg/hm2，粳稻控释肥用量超过750 kg/hm2，均不利于其后期干物质的积累和产量的提高。

关键词: 控释肥, 施肥量, 干物质, 产量, 水稻

Abstract: Effects of different amount of controlled-release fertilizer（N-P-K=28-5-8） on the dry matter accumulation and grain yield of rice were studied in this paper. The results showed that the dry matter accumulation and yield increased first and then decreased after heading with increasing amounts of controlled-release fertilization. The yield of indica rice was highest（12.20 t/hm2） when the application of controlled-release fertilizer is 600 kg/hm2, with yield increasement of 5.89 t/hm2, the maximum dry matter accumulation after heading was 595.36 g/m2, and fertilizer contribution rate was 48.23% compared to no fertilizer treatment. The yield of japonica rice was highest（9.33 t/hm2） when the application of controlled-release fertilization is 750 kg/hm2, with yield increasement of 2.33 t/hm2, the maximum dry matter accumulation after heading was 566.62 g/m2, and fertilizer contribution rate was 25.00%, compared to no fertilizer treatment. The controlled-release fertilization amount more than 600 kg/hm2, the dry matter accumulation and grain yield of indica rice decreased. The controlled-release fertilization amount more than 750 kg/hm2, the dry matter accumulation and grain yield of japonica rice decreased.

Key words: controlled-release fertilizer, fertilizer amount, dry matter production, grain yield, rice

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