Journal of Food, Agriculture and Environment
Vol 12,
Issue 3&4,2014
Online ISSN: 1459-0263
Print ISSN: 1459-0255
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The relocation of undisturbed soil in long-term experiment impacts organo-mineral complex degree and combined humus of black soil
Author(s):
Fengqin Chi *,
Enjun Kuang, Baoku Zhou, Jiiuming Zhang, Qingrui Su, Shanshan CaiRecieved Date: 2014-05-28, Accepted Date: 2014-09-20
Abstract:The effect of soil relocation on organo-mineral complex status and combined humus was considered to be based on the relocation of undisturbed soil in a long-term experiment in Agricultural Soil Ecological Environment Key Field Scientific Observation and Experiment Station (Harbin) of the Ministry in Northeast China. Four fertilizer treatments were selected in this study including CK (control, no fertilizer), M (organic fertilizer, horse manure), NPK (chemical fertilizer), MNPK (horse manure plus chemical fertilizer). Tested soils were relocated at December 18, 2010 to March 15, 2011 by the relocation of undisturbed soil columns under freezing conditions. There were no effect of soil relocation on soil organo-mineral complex degree, quantity of combined humus and the ratio of loosely and tightly combined humus. The youngest humus, the highest complex degree of organo-mineral complex and the highest soil fertility were observed in the combination of chemical plus organic matter (NPKM) in all tested soils. Soil organic carbon, heavy fraction of organic carbon and organo-mineral complexes contents did not change much in all tested soils. However, the soil relocation impacted significantly the content of additional organo-mineral complexes and the degree of additional organo-mineral complexes which showed the trend of increase-decrease order after two years of soil relocation. Soil relocation did not impact significantly the quantity of combined humus and the ratio of loosely and tightly combined humus in 0 - 20 cm soil layer in all tested soils.
Keywords:Long-term experiment,
black soil, combined humus, organo-mineral complex degreeJournal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 3&4
Category: Environment
Pages: 434-438
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