【序号】: 1 【作者】:M. Kelm, H. Brück, M. Hermann and B. Sattelmacher 【题名】: The effect of low nitrogen supply on yield and water-use efficiency of sweet potato (Ipomoea batatas L.) 【期刊】: Plant Nutrition 【年、卷、期、起止页码】: 2002,92 【全文链接】:http://www.springerlink.com/content/q6l064501747464u/