| 官利兰1，代啟贵2，谭卫娜1，李水源1，陈健章1，张新明2.前茬冬作马铃薯的早稻氮肥合理调控初步试验[J].广东农业科学,2018,45(8):81-85 |
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前茬冬作马铃薯的早稻氮肥合理调控初步试验 |
| Preliminary experiment on the rational regulation of early rice nitrogen fertilizer under preceding winter potato planting |
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| DOI：10.16768/j.issn.1004-874X.2018.08.012 |
| 中文关键词: 冬作马铃薯 早稻 氮肥减量 氮素农学利用率 偏生产力 经济效益 |
| 英文关键词: preceding winter potato planting early rice nitrogen reduction agronomic nitrogen use efficiency partial productivity economic efficiency |
| 基金项目:广东省农作物良种良法示范基地建设项目（粤财综［2016］20 号） |
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| 摘要点击次数: 1749 |
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| 中文摘要: |
| 为进一步探讨前茬冬作马铃薯的早稻氮肥合理调控，进行了不同施氮量对早稻产量的影响试验。
结果表明，早稻施氮量为60 kg/hm2 时产量显著高于施氮量为90、120 kg/hm2 的处理，抗倒伏能力强，同时
氮素农学利用效率和偏生产力均具有显著优势。此外，施用有机肥的增产效果显著。建议前茬冬作马铃薯
的早稻氮肥减施70%~80%，合理施用有机肥，有利于提高产量、提高利用率、增加经济收益。 |
| 英文摘要: |
| This experiment was carried out to study the rational regulation of early rice nitrogen fertilizer under
preceding winter potato planting. Field experiments were conducted to compare the effects of different application
levels of nitrogen fertilizer on early rice yield when the winter potato was proper preceding crop. The yield of early
rice when nitrogen fertilizer was 60 kg/hm2 was significantly higher than 90 kg/hm2 and 120 kg/hm2, and has stronger
lodging resistance. The nitrogen agronomic efficiency and nitrogen partial factor productivity were highest with
the pure nitrogen of 60 kg/hm2. The yield of early rice was increased significantly by organic fertilizer application.
Therefore, it is suggested that the proper application of organic fertilizers and reducing the amount of using nitrogen
fertilizer by 70%-80% in early race growth when winter potato were proper preceding crop, were beneficial to increase
the yield, utilization rate and economic benefits. |
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