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Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis
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[Effects of nitrogen forms on roots and N fertilizer efficiency of different wheat cultivars with specialized

Xinming Ma1, Zhiqiang Wang, Xiaochun Wang

  • 1College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China. xinmingma@371.net

Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology
|September 1, 2004
PubMed

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