限水条件下氮肥用量及施氮时期对冬小麦产量、土壤硝态氮含量的影响
张霞, 罗延庆, 张胜全, 郑强, 冯汉宇, 王敏, 王志敏
Effect of N Application Rate and Time on Grain Yield of Winter Wheat and Soil NO3--N Content
ZHANG Xia, LUO Yan-qing, ZHANG Sheng-quan, ZHENG Qiang, FENG Han-yu, WANG Min, WANG Zhi-min
华北农学报
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2007, (3): 163
-167
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DOI: 10.3321/j.issn:1000-7091.2007.03.038
