中国稻米

中国稻米 ›› 2014, Vol. 20 ›› Issue (1): 92-93,96.DOI: 10.3969/j.issn.1006-8082.2014.01.024

• 品种与技术 • 上一篇    下一篇

氮肥运筹对机插水稻产量、效益及肥料利用率的影响

  1. 江苏省海安县土壤肥料技术指导站，江苏 海安 226600
  • 出版日期:2014-01-20 发布日期:2014-01-20

Effects of Nitrogen Management on Yield, Benefit and Fertilizer Use Efficiency of Machine-transplanted Rice

  • Online:2014-01-20 Published:2014-01-20

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被引次数

8

摘要： 对不同氮肥运筹方式对机插稻产量及肥料利用率的影响进行了试验。结果表明，氮肥总量控制在300 kg/hm2时，机插水稻氮肥运筹方案以基肥30%、第1次分蘖肥10%、第2次分蘖肥10%和20%、穗肥50%和40%最为适宜，分别比对照增产7.21%和4.62%，提高效益7.97%和5.12%，提高N 肥吸收利用率、N 肥农学利用率、N 肥偏生产力41.7%和22.4%、7.3%和4.6%、21.1%和13.5%，且水稻土和潮土趋势一致。

关键词: 氮肥运筹, 氮肥利用率, 产量, 效益, 机插稻

Abstract: An experiment was carried on the effects of nitrogen management on yield and fertilizer use efficiency of machine-transplanted rice. The results showed that the most suitable nitrogen application in basal fertilizer：first tillering fertilizer：second tillering fertilizer：panicle fertilizer is 30∶10∶（10 or 20）∶（50 or 40）at nitrogen level of 300 kg/hm2. Compared to the control, it can make the yield increase of 7.21% and 4.62%, benefit increase of 7.97% and 5.12%, nitrogen use efficiency increase of 41.7% and 22.4%, agronomic nitrogen efficiency increase of 7.3% and 4.6%, partial nitrogen productivity increase of 21.1% and 13.5%. The trends in paddy soil and fluvio-aquic soil were similar.

Key words: nitrogen management, nitrogen use efficiency, yield, benefit, machine-transplanted rice

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