海量图书期刊资源,随时随地畅享阅读乐趣
Fate and efficiency of nitrogen fertilizers applied to wetland rice. I. The PhilippinesET Craswell; SK De Datta; CS Weeraratne; PLG Vlek · 1985
Initial and residual effects of nitrogen fertilizers on grain yield of a maize/bean intercrop grown on a Humic Nitosol and the fate and efficiency of the applied nitrogenH. Ssali · 1990