By the method of field plot experiment and laboratory determination,dynamic change and release of fixed ammonium in upland soils during crops growth period were studied.
英
美
释义
通过田间小区试验和室内分析,研究了湖南省的代表性旱耕地土壤固定态铵在作物不同生育期的动态变化规律及其释放情况。
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