Soil nutrient audits for China to estimate nutrient balances and output/input relationships
作者： William F Sheldrick , J.Keith Syers , John Lingard
DOI: 10.1016/S0167-8809(02)00038-5
关键词: Environmental science 、 Population 、 Crop yield 、 Population growth 、 Soil retrogression and degradation 、 Agricultural productivity 、 Annual growth rate 、 Fertilizer 、 Agronomy 、 Nutrient
摘要: … that in China, a balanced situation has been reached for N and that the efficiency is 50%. … To obtain a balanced situation by 2020 will require an increase in K fertilizer use of more than 8…
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sci-hub.se 参考文章(15)
W. Wichmann, IFA world fertilizer use manual. International Fertilizer Association. ,(1992)
William Sheldrick, Contribution of livestock excreta to nutrient balances Nutrient Cycling in Agroecosystems. ,vol. 66, pp. 119- 131 ,(2003) , 10.1023/A:1023944131188
John K. Syers, A. E. Johnston, Nutrient management for sustainable crop production in Asia CAB International. ,(1998)
O. Oenema, M. van Noordwijk, L. O. Fresco, E. M. A. Smaling, Nutrient cycling in ecosystems versus nutrient budgets of agricultural systems. CABI Publishing. pp. 1- 26 ,(1999)
J. J. Stoorvogel, E. M. A. Smaling, Assessment of soil nutrient depletion in sub-Saharan Africa: 1983-2000. Report Winand Staring Centre (Netherlands).. ,(1990)
Mark W Rosegrant, Mercedita Castro Agcaoili-Sombilla, Nicostrato D Perez, Global Food Projections to 2020: Implications for Investment ,(1995)
H. Steinfeld, H. Blackburn, C. de Haan, Livestock and the environment : finding a balance Livestock & the environment: finding a balance.. ,(1997)
Mark B. Peoples, Eric T. Craswell, Biological nitrogen fixation: investments, expectations and actual contributions to agriculture Plant and Soil. ,vol. 141, pp. 13- 39 ,(1992) , 10.1007/978-94-017-0910-1_2
Benedict Stavis, China's green revolution ,(1974)
N. Alexandratos, World agriculture: Towards 2010 : an FAO study ,(1995)