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中国农学通报

中国农学通报 ›› 2005, Vol. 21 ›› Issue (5): 269-269.

所属专题： 玉米

• 目次 • 上一篇    下一篇

江淮丘陵地区玉米钾肥效应研究

王允青,刘 英,况 晶,郭熙盛   

  • 出版日期:2005-05-05 发布日期:2005-05-05

Preliminary Report on the Effect of the Potassium on Hybrid Maize in Jianghuai Region

Wang Yunqing, Liu Ying, Kuang Jing, Guo Xisheng   

  • Online:2005-05-05 Published:2005-05-05

摘要： 试验结果表明，杂交玉米每公顷施用K 150.0 kg时产量最高，达7065kg/hm2，比对照(NPKO)增产9.9%。钾肥经济效益也以每公顷施K 150.0kg最高，比对照增收892元/hm2，产投比为2.2:1。钾肥施用量在K 150.0kg/hm2以下时，土壤中的钾素亏损，不能保持土壤中钾素平衡。

Abstract: The results of the experiment indicated that Hybrid Maize could obtain the highest yields and the best economic performances as K application was 150.0 kg/hm2. The highest yield of Hybrid Maize reached 7065 kg/hm2 and increased by 9.9% than CK. The income was raised about 892 yuan/hm2 and the value cost ratio reached 2.2. The results also showed that potassium content in the soil decreased and cannot keep balance when the K was applicated under 150.0kg/hm2.