Pedosphere 8(3): 281--288, 1998
ISSN 1002-0160/CN 32-1315/P
©1998 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Influence of long-term fertilization with different mineral fertilizers and farmyard manure on some soil chemical properties and crop yields |
| LIU De-Hui1, J. LABETOWICZ2 and L. KUSZELEWSKI2 |
1 Nanjing Agricultural University, Nanjing 210095 (China);
2 Department of Agricultural Chemistry, Warsaw Agricultural University, Warsaw 02 528 (Poland) |
| ABSTRACT |
| A long-term fertilization experiment was carried out in an experimental field in Lyczyn near Warsaw, Poland. Application ofmineral fertilizers, especially N fertilizers with and without farmyard manure accelerated the acidification process of the soil. Application of 1.6 t CaO ha-1 every four years was essential to maintenance of the soil pHKCl at 5.5~6.6 and base saturation degree above 60%. Application of 50 t farmyard manure ha-1 every 4 years, which contained 46 kg P and 240 kg K, was sufficient to maintain both the K and P fertility of the soil. Besides, it was beneficial to alleviating soil acidification. As a result of long-term unbalanced fertilization, yield responses to N, P and K fertilizers increased significantly with time. The efficiency of N from farmyard manure was found to be comparable to that of N fertilizer during 1988~1991. |
| Key Words: crop yield, farmyard manure, mineral fertilizers, soil chemical properties |
| Citation: Liu, D. H., Labetowicz, J. and Kuszelewski, L. 1998. Influence of long-term fertilization with different mineral fertilizers and farmyard manure on some soil chemical properties and crop yields. Pedosphere. 8(3): 281-288. |
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