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Updated: Aug 23, 2026

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis
Published on: May 10, 2020
[Effect of incorporating corn residues into soil on nitrogen transformation in soil-plant ecosystem]
Shuping Wang1, Guangsheng Zhou, Yan Jiang
1Laboratory of Quantitative Vegetation Ecology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China. wshuping@163.com
Abstract:
Appropriate field management of crop residues can help to enhance soil productivity and nutrient recycling, and to minimize greenhouse gas emission. In this paper, a 15N tracer pot experiment was installed to study the effect of incorporating corn stalk and stubble into black soil on the nitrogen transformation in soil-plant ecosystem. The results indicated that compared with single application of N fertilizer, incorporation of corn stalk and stubble could increase soil nitrogen content and enhance its availability, and increase soil microbial nitrogen content. It also promoted the transfer of nitrogen in corn into its kernel, so as to increase the nitrogen use efficiency. Simultaneously, it reduced the content of soil NO3(-)-N, and decreased the fertilizer nitrogen loss by 4.7-5.6%.
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