湖北农业科学 ›› 2018, Vol. 57 ›› Issue (6): 31-34.doi: 10.14088/j.cnki.issn0439-8114.2018.06.007

• 资源·环境 • 上一篇    下一篇

不同氮肥水平增施钾肥对马铃薯产量和品质的影响

郭志平   

  1. 丽水学院,浙江 丽水 323000
  • 收稿日期:2017-10-30 出版日期:2018-03-25 发布日期:2020-01-06
  • 作者简介:郭志平(1965-),男,黑龙江齐齐哈尔人,教授,硕士,主要从事马铃薯种质资源评价与生理生化研究,(电话)13666568993 (电子信箱)gzp2230311@sina.com。
  • 基金资助:
    浙江省公益技术项目(2013C32030); 丽水市科技计划项目(2011JYB07)

Effect on the Potato Production and Quality by Increasing of Potassium Fertilizer Based on Different Levels of Nitrogen Fertilizer

GUO Zhi-ping   

  1. Lishui University,Lishui 323000,Zhejiang,China
  • Received:2017-10-30 Online:2018-03-25 Published:2020-01-06

摘要: 以克新18号脱毒马铃薯为材料,分别研究高氮水平(110 kg/hm2尿素)和低氮水平(65 kg/hm2尿素)增施钾肥对马铃薯产量和品质的影响。结果表明,增施钾肥,高氮水平产量为25 779.15~30 868.65 kg/hm2,大中薯率为68.70%~83.50%,均明显高于低氮水平;低氮水平的块茎淀粉含量为13.92%~14.63%、干物质含量为19.50~20.54 g/kg、维生素C含量为10.92~11.36 mg/100 g,均明显高于高氮水平。此外,增施钾肥还可提高马铃薯的净同化率、叶绿素含量和根系活力,且高氮水平各处理显著高于低氮水平。

关键词: 马铃薯, 氮肥, 钾肥, 产量, 品质

Abstract: Taking virus-free potato Kexin No.18 as the material,the effect of increasing potassium application on high nitrogen levels(110 kg/hm2) and low nitrogen levels(65 kg/hm2) to the potato production and quality were conducted,respectively. The results demonstrated that increasing potassium application on high nitrogen levels,potato production was 25 779.15~30 868.65 kg/hm2 and commercial potato tuber rate was 68.70%~83.50%,which were both obvious high than low nitrogen condition;While increasing potassium application on low nitrogen levels,content of tuber starch was 13.92%~14.63%,and tuber dry matter was 19.50~20.54 g/kg2,and vitamin C content in tuber was 10.92~11.36 mg/100 g,which all significantly higher than high nitrogen condition. Besides,the net assimilation rate,chlorophyll content, root activity of potato were improved by increasing of potassium fertilizer,and the treatment of high nitrogen level was significantly higher than that of low nitrogen.

Key words: potato, nitrogen fertilizer, potassium fertilizer, production, quality

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