Effect of tillage and temperature on nitrogen mineralization and microbial activity and microbial numbers of lupine amended soil

被引：1
作者：
Carranca, C. [1 ]
Rocha, I. [1 ]
De Varennes, A. [2 ]
Oliveira, A. [2 ]
Pampulha, M. E. [2 ]
Torres, M. O. [2 ]
机构：
[1] L Inst Nacl Invest Agr, P-2784505 Oeiras, Portugal
[2] Univ Tecn Lisboa, Inst Super Agron, P-1349017 Lisbon, Portugal
来源：
AGROCHIMICA | 2009年 / 53卷 / 03期
关键词：
aerobic incubation; dehydrogenase activity; fungi; sandy soil; temperature; CROP RESIDUES; MANAGEMENT-PRACTICES; WASTE COMPOST; SEWAGE-SLUDGE; DYNAMICS; QUALITY; SANDY; ROTATION; CARBON;
D O I：
暂无
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Soils in Southern Europe are often shallow and Susceptible to erosion. Proper soil management with conservation of crop residue is crucial to preserve nutrients in Mediterranean agro-ecosystems. We studied the short-term effects of contrasting tillage on potential N availability and microbial activity and microbial counts in a sandy soil amended with white lupine residue. Tillage favoured N release at highest temperature, but microbial activity was lowered at this temperature. Immobilization was more pronounced at 7 degrees C and in disturbed topsoil. Dehydrogenase activity was significantly correlated (p<0.05) to culturable microbial numbers. Bacteria were more abundant than fungi and responded positively to soil disturbance.
引用
收藏
页码：183 / 195
页数：13
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