Welcome to Journal of Agriculture,

Journal of Agriculture ›› 2021, Vol. 11 ›› Issue (7): 28-31.doi: 10.11923/j.issn.2095-4050.cjas20190900203

Special Issue: 园艺

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Effects of Fertilization on the Composition of δ15N in Soil, Vegetables and Runoff of Vegetable Field

Zhang Lijun1(), Hu Yanfang2, Wang Jingwen3, Zhang Mingkui4()   

  1. 1Pingyang County Agricultural and Rural Bureau, Pingyang 325400, Zhejiang, China
    2Kecheng District Soil-fertilizer and Rural Energy Technology Extension Station of Quzhou City, Quzhou 324000, Zhejiang, China
    3Hangzhou Plant Protection and Soil-fertilizer Station, Hangzhou 310020, Zhejiang, China
    4College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, China
  • Received:2019-09-23 Revised:2020-01-23 Online:2021-07-20 Published:2021-08-04
  • Contact: Zhang Mingkui E-mail:523534589@qq.com;mkzhang@zju.edu.cn

Abstract:

To understand the effect of fertilization on the abundance of δ15N in soil, vegetables and surface water, 28 plots of vegetable field applied with different fertilizers during 2012 to 2018, including 13 plots with chemical fertilizer, 8 plots with livestock manure and 7 plots with commercial organic fertilizer and chemical fertilizer, were selected. The surface soil, both aboveground and groundwater parts of vegetables, and surface runoff samples in the fields were collected and their abundance of δ15N was measured. The results showed that fertilizer types had significant effects on the abundance of δ15N in soil, vegetables and surface runoff, and the abundance decreased in the order of livestock and poultry fertilizer > commercial organic fertilizer + chemical fertilizer > chemical fertilizer. There was a positive correlation between the abundance of δ15N in vegetables and surface water and soil. It is concluded that the nitrogen isotope composition of vegetable products could be used as an auxiliary basis for the identification of organic vegetables, and the abundance of δ15N in surface water could be used as an indicator of nitrogen pollution sources in water body.

Key words: Vegetable Field, δ15N Abundance, Organic Vegetables, Organic Fertilizer, Chemical Fertilizer, Pollution Source Identification

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