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Variations in the Natural N-15 Abundance of Brassica chinensis Grown in Uncultivated Soil Affected by Different Nitrogen Fertilizers

文献类型： 外文期刊

作者： Yuan, Yuwei 1 ; Hu, Guixian 1 ; Zhao, Ming; Chen, Tianjin 3 ; Zhang, Yongzhi 1 ; Zhu, Jiahong 1 ; Wang, Qiang 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Qual & Stand Agr Prod, Hangzhou 310021, Zhejiang, Peoples R China

2.Minist Agr, Key Lab Pesticide Residue Detect, Hangzhou 310021, Zhejiang, Peoples R China

3.Chinese Acad Agr Sci, Inst Qual Stand & Testing Technol Agroprod, Beijing 100081, Peoples R China

关键词： delta N-15;stable nitrogen isotope;chicken manure;chemical fertilizer

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）

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收录情况： SCI

摘要： To further investigate the method of using delta N-15 as a marker for organic vegetable discrimination, the effects of different fertilizers on the delta N-15 in different growing stages of Brassica chinensis (B. chinensis) grown in uncultivated soil were investigated with a pot experiment. B. chinensis was planted with uncultivated soil and different fertilizer treatments and then harvested three times in three seasons consecutively. For the spring experiments in the years of 2011 and 2012, the delta N-15 value of B. chinensis, which increased due to organic manure application and decreased due to chemical fertilizer application, was significantly different (p < 0.05) with manure treatment and chemical treatment. The delta N-15 value of vegetables varied among three growing stages and ranged from +8.6% to +11.5% for the control, from +8.6% to +12.8% for the compost chicken manure treatment, from +2.8% to +7.7% for the chemical fertilizer urea treatment, and from +7.7% to +10.9% for the compostchemical fertilizer treatment. However, the delta N-15 values observed in the autumn experiment of 2011 without any fertilizer application increased ranging from +13.4% to +15.4%, + 11.2% to +17.7%, +10.7% to +17.1%, and +10.6% to +19.1%, respectively, for the same treatments mentioned above. This result was not significantly different between manure treatment and chemical treatment. The delta N-15 values of soil obtained in the spring of 2011 during three growing stages were slightly affected by fertilizers and varied in the range of +1.6% to +2.5% for CK, +4.7% to +6.5% for compost treatment, +2.1% to +2.4% for chemical treatment, and +2.7% to +4.6% for chemicalcompost treatment, respectively. High delta N-15 values of B. chinensis were observed in these experiments, which would be useful to supplement a delta N-15 database for discriminating organic vegetables. Although there was a significant difference between manure treatment and chemical treatment, it was still difficult to discriminate whether a labeled organic vegetable was really grown without chemical fertilizer just with a fixed high delta N-15 value, especially for the vegetables planted simultaneously with chemical and compost fertilizer.

  • 相关文献

[1]Effect of Different Fertilizers on Nitrogen Isotope Composition and Nitrate Content of Brassica campestris. Yuan, Yuwei,Zhang, Zhiheng,Yang, Guiling,Wang, Qiang,Zhao, Ming,Chen, Tianjin.

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