北方农业学报 ›› 2023, Vol. 51 ›› Issue (4): 20-27.doi: 10.12190/j.issn.2096-1197.2023.04.03

• 种质资源 · 生理生化 • 上一篇    下一篇

青海东部马铃薯-土壤系统中营养元素特征研究

代璐1, 张亚峰1, 贺连珍1, 董永雯1, 秦永强2   

  1. 1.青海省第五地质勘查院 生态环境与农业资源研究分院,青海 西宁 810099
    2.海东市平安区高原富硒现代农业示范园区管理委员会,青海 海东 810600
  • 收稿日期:2023-06-12 修回日期:2023-07-24 出版日期:2023-08-20 发布日期:2023-11-07
  • 通讯作者: 张亚峰(1986—),女,高级工程师,学士,主要从事生态农业与功能农业的研究工作。
  • 作者简介:代璐(1988—),女,工程师,学士,主要从事土地质量地球化学调查评价的研究工作。
  • 基金资助:
    青海省2021年昆仑英才高端创新创业人才计划(青人才字〔2021〕13号)

Research on nutrient elements characteristics in potato-soil system in eastern Qinghai

DAI Lu1, ZHANG Yafeng1, HE Lianzhen1, DONG Yongwen1, QIN Yongqiang2   

  1. 1. Research Branch of Ecological Environment and Agricultural Resources,The Fifth Geological Exploration Institute of Qinghai Province,Xining 810099,China
    2. Management Committee of Plateau Selenium-rich Modern Agriculture Demonstration Zone of Ping′an District,Haidong City,Haidong 810600,China
  • Received:2023-06-12 Revised:2023-07-24 Online:2023-08-20 Published:2023-11-07

摘要:

【目的】研究马铃薯-土壤系统中营养元素的含量水平,筛选高原地区马铃薯特色产品,优化马铃薯品质。【方法】对青海省东部地区马铃薯及其根系土中Se、Cu、Zn、Fe、Mg、Sr、Mn、I和Cr等营养元素进行调查分析,并利用特征参数、富集系数、相关性分析等方法,对马铃薯及其土壤环境中的营养元素水平和吸收规律进行评价。【结果】青海省东部土壤Se含量平均值为421.3 μg/kg、Cu为27 mg/kg、Zn为78 mg/kg、Fe为45 900 mg/kg、Mg为28.41 g/kg、Mn为651 mg/kg、I为2.6 mg/kg、Sr为280 mg/kg、Cr为81 mg/kg。Se、Sr、Mg、Cr显著富集,判定研究区属富硒-高锶-高镁-适铬型土壤;产出的马铃薯中Se含量平均值为10.6 μg/kg、Cu为1.3 mg/kg、Zn为2.8 mg/kg、Fe为7.65 mg/kg、Mg为0.24 g/kg、Mn为1.1 mg/kg、I为0.03 mg/kg、Sr为1.0 mg/kg、Cr为0.05 mg/kg。马铃薯富硒率为18.8%。根据马铃薯对各营养元素的富集系数强弱可判定其存在喜Cu和Zn、厌Cr和Fe的特性。根据“土壤-马铃薯”系统中元素间的相关性评价推断,马铃薯在元素吸收机理中可能存在Mg-Mn-Zn和Se-I的协同序列。【结论】青海东部具有天然特色资源优势,属富硒-高锶-高镁-适铬型土壤,可根据马铃薯的吸收机理建立富硒高镁的特色马铃薯产品。

关键词: 青海东部, 富硒土壤, 马铃薯, 富集系数, 营养元素

Abstract:

【Objective】Study the content level of nutrient elements in the potato-soil system,to screen featured potato products in plateau areas,and optimize potato quality.【Methods】The nutrient elements such as Se、Cu、Zn、Fe、Mg、Sr、Mn、I and Cr in potatoes and the rhizosphere soil in the eastern part of Qinghai Province were investigated and analyzed. And the nutrient element level and the absorption pattern in potatoes and the soil environment were evaluated using characteristic parameters,enrichment coefficients and correlation analysis.【Results】In eastern Qinghai Province,the average soil Se content was 421.3 μg/kg,Cu was 27 mg/kg,Zn was 78 mg/kg,Fe was 45 900 mg/kg,Mg was 28.41 g/kg,Mn was 651 mg/kg,I was 2.6 mg/kg,Sr was 280 mg/kg and Cr was 81 mg/kg. Se,Sr,Mg and Cr were significantly enriched,and the study area was predicated to be selenium-rich,high-strontium,high-magnesium,and moderate-chromium soil. The average content of Se in potatoes was 10.6 μg/kg,Cu was 1.3 mg/kg,Zn was 2.8 mg/kg,Fe was 7.65 mg/kg,Mg was 0.24 g/kg,Mn was 1.1 mg/kg,I was 0.03 mg/kg,Sr was 1.0 mg/kg,and Cr was 0.05 mg/kg. The selenium-enrichment rate of potatoes was 18.8%. According to the enrichment coefficient strength of nutrient elements in potatoes,potatoes had the characteristics of favoring Cu and Zn,and repelling Cr and Fe. According to the correlation evaluation of elements in the soil-potato system,it was inferred that the sequence combination of Mg-Mn-Zn and Se-I existed in the elements uptake mechanisms of potatoes.【Conclusion】The eastern of Qinghai Province had unique natural resource advantages,had selenium-rich,high-strontium,high-magnesium,and moderate-chromium soil. Based on the elements uptake mechanisms of potatoes,selenium-rich and high-magnesium featured potatoes could be cultivated.

Key words: Eastern Qinghai, Selenium-rich soil, Potato, Enrichment coefficient, Nutrient elements

中图分类号: 

  • S532