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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (24): 197-200.

所属专题： 马铃薯

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

氮磷钾分期施用对马铃薯产量和品质的影响

吕慧峰 王小晶 陈 怡 卢祥言 毛国庆 沈云树 朱 斌 许良兵 王正银   

  • 收稿日期:2010-05-19 修回日期:2010-06-23 出版日期:2010-12-20 发布日期:2010-12-20
  • 基金资助:

    国家科技支撑计划

Effects of Top-dressing at Different Stages on Yield and Quality of Potato

  • Received:2010-05-19 Revised:2010-06-23 Online:2010-12-20 Published:2010-12-20

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摘要：

摘要：采用大田试验研究了分期施肥对重庆市巫溪和城口马铃薯产量及品质的影响。结果表明，与常规施肥相比，分期施氮钾、分期施氮磷钾各处理均提高马铃薯块茎的产量,巫溪试验点提高幅度为2.5～5.6%，以分期施氮磷钾3效果最好；城口试验点提高范围为1.4%～19.7%，以分期施氮钾2作用最大。分期施肥各处理都提高了马铃薯维生素C含量；降低了块茎淀粉、粗蛋白和磷含量；各处理对马铃薯可溶性糖和块茎中钾含量的影响，两个试验点表现不一致。

关键词: 桃, 桃, 钙, 钾, NAA, 果实品质

Abstract:

Abstract：Field experiments were conducted to study the effects of top-dressing nitrogen, phosphorus and potassium at different stages on yield and quality of potato in Wuxi and Chengkou county of Chongqing. The results showed that compared with conventional fertilization, stage N and K, split application of NPK treatments were effective to improve the yield of potato tubers. Among them, potato yield were increased range from 2.5% to 5.6 % in Wuxi and increased range from 1.4 % to 19.7% in Chengkou. Vc content of potato were increased in all fertilization treatments. The contents of starch，crude protein and phosphorus in potatos were decreased in all fertilization treatments. Changes of soluble sugar and potassium in potatos were inconsistent in two experiments.