Experiments on a dynamic model for the transformation of crop residue in soil
2001
Lin, C. | Liu, T.S. | Chen, C. | Hu, T.L. | Chang, C.M.
The purpose of this paper was to verify and validate a model, which simulates the transformation of crop residues in soils. The experiments were carried out using different treatments of a soil mixed with corn stalk residues, which were incubated under controlled conditions. The treatments consisted of combinations of two temperatures of 15 degrees C and 30 degrees C, three soil moisture tensions of 0.1, 0.3, and 0.7 bars, three ratios of 1%, 5%, and 10% of residue, and a number of different times of incorporation. Most of the experiments were designed to calibrate the parameters of the theoretical model, while other treatments with different initial conditions and times were used to validate the performance of the model. The results showed that the model could accurately predict variations in soil organic content under a variety of control conditions, and has the potential of analyzing the complicated transformation of organic matter in soils.
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