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摘要
We investigated N-15 abundance (delta N-15) of winter wheat (Triticum aestivum cv. Jinmai 1) plants and soil at different growth stages in a field with a 13-year fertilization history of urea and compost, to determine whether or not the delta N-15 of plant parts can be used as an indicator of organic amendment with compost. Plant parts (roots, leaves, stems and grains) and soil were sampled at re-greening, jointing, grain filling and mature growth stages of winter wheat. There were significant differences between the urea and compost treatments in delta N-15 of whole plants, plant parts and soil over the whole growing season. Determination of the delta N-15 of plant parts was more convenient than that of whole plant to distinguish between the application of organic amendment and synthetic N fertilizer.
- 出版日期2013-12
- 单位中国农业大学; 中国科学院大学; 中国科学院遗传与发育生物学研究所农业资源研究中心; 中国科学院遗传与发育生物学研究所
