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Nitrogen Use Efficiency of Two Successive-Planted Vegetables Growing in Culture Matrix Fertilized with Compost and Chemical Fertilizer, Determined by Mirror 15N Labeling Method

文献类型： 外文期刊

作者： Wang, Chenyu 1 ; Ding, Xinyu 2 ; Ma, Zemeng 3 ; Peng, Zijuan 1 ; Zhao, Xiaorong 1 ; Li, Guitong 1 ;

作者机构： 1.China Agr Univ, Coll Land Sci & Technol, Dept Soil & Water Sci, 2 Yuanmingyuan West Rd, Beijing 100193, Peoples R China

2.Chinese Acad Agr Sci, Natl Engn Lab Improving Qual Arable Land, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

3.Shaanxi Prov Land Engn Construct Grp Co Ltd, Xian 710000, Peoples R China

4.Shaanxi Prov Land Engn Construct Grp Co Ltd, Inst Land Engn & Technol, Xian 710000, Peoples R China

5.Minist Nat Resources, Key Lab Degraded & Unused Land Consolidat Engn, Xian 710000, Peoples R China

关键词： Continuous cropping; Compost and chemical fertilizer; N-15 isotopic labeling; Nitrogen use efficiency

期刊名称：JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION （ 影响因子：3.1； 五年影响因子：3.6 ）

ISSN： 0718-9508

年卷期： 2025 年

页码：

收录情况： SCI

摘要： PurposeTo differentiate between compost-derived nitrogen (N) and chemical-N, and to measure the chemical-N use efficiency in leaf vegetables under continuous cropping systems.MethodsWe employed 15N-labeled chemical fertilizer to distinguish compost-N from chemical-N. Additionally, a 15N mirror-labeling method was designed to differentiate the first and second chemical-N applications in a continuous cropping system. This involved setting up two replicated treatments per experimental condition: one with 15N-labeled fertilizer and the other unlabeled. By calculating the difference between these replications, the NUE of the first and second fertilizer applications was determined.ResultsThe study examined the impact of organic fertilizer type on vegetable N uptake and N conversion by applying compost and chemical fertilizer consecutively in two crop cycles on an inorganic matrix.ConclusionsThe 15N mirror labeling method, in which the core concept is the combined calculation of 15N labeling and the difference between the replications, could be used for measuring NUE in the continue cropping system with the repeated application of the same fertilizer.

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