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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (14): 218-221.

所属专题： 水稻

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

中稻氮磷钾肥的施肥效果及推荐用量

鲁剑巍 卜容燕 李小坤 李 彬 邹家龙 王伟妮 李云春   

  • 收稿日期:2010-01-22 修回日期:2010-03-25 出版日期:2010-07-20 发布日期:2010-07-20

Effect of “combinations of NPK fertilizer” Fertilization Experiment and Fertilizer Recommendation on Mid-season Rice

  • Received:2010-01-22 Revised:2010-03-25 Online:2010-07-20 Published:2010-07-20

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摘要： 在湖北省荆州市布置了中稻的氮、磷、钾肥料效应试验，研究了不同的氮、磷、钾施肥组合对中稻产量及经济效益的影响。结果表明，中稻施用氮肥的效果最好，稻谷增产量最高达1 291 kg/hm2，相应增产率为20.0%，纯增收入1 073元/hm2；施用钾肥的增产量为676 kg/hm2，增产率为10.6%，纯增收入190元/hm2；施用磷肥的增产量为391 kg/hm2，增产率为5.9%，纯增收入283元/hm2。通过拟合一元二次肥效模型，确定中稻最高产量N、P2O5和K2O的施用量分别为123、64、和126 kg/hm2，最佳经济N、P2O5和K2O的施用量分别为110、60和70 kg/hm2。

关键词: 淮北地区小麦, 淮北地区小麦, 氮肥, 密度, 效应

Abstract: This paper studied the effects of nitrogen, phosphorus and potassium fertilization on mid-season rice by the different combinations of NPK fertilizer fertilization experiment, which was conducted in Jingzhou city, Hubei Province. The result showed that the effect of N fertilization on mid-season rice yield and economic benefit was largest among the three nutrients, The highest increment of N, P2O5 and K2O were 1 291, 391and 676 kg/hm2, and which were 20%, 5.9% and 10.6% higher than that of control, respectively. The net income of N, P and K were 1 073, 283and 190yuan/hm2 respectively. According to the model of fertilizer effect, the highest yield will be reached when N, P2O5and K2O application rate are 123, 64and126 kg/hm2 and the highest profit will be reached when N, P2O5 and K2O application rate are 110, 60and 70 kg/hm2, respectively.