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Agronomic and Economic Efficiency of Manure and Urea Fertilizers Use on Vertisols in Ethiopian Highl
[期刊论文] 作者：Teklu Erkoss,Hailemariam Tekle,
来源：中国农业科学：英文版 年份：2009
Soil fertility depletion is among the major impediments to sustained agricultural productivity especially in the less developed countries because of limited app...
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