Transformation of organic N newly added to red soil treated with different cultural practices

Zhang Qin-Zheng，

Ye Qing-Fu，

Xi Hai-Fu，

Wu Gang，

He Zhen-Li

Nuclear Science and Techniques

Vol.9, No.1

pp.59-61

Published in print 01 Feb 1998

31300

By using ¹⁵N tracer method, transformation of organic N, which was newly added to red soil treated with different cultural practices, was studied under the laboratory incubation condition. The experimental results showed that the transformation of N from newly added organic matter and soil native pool during incubation was influenced by cultural practice treatment before incubation. Fallow was favorable to the mineralization of newly added organic N and soil N compared with the planting wheat treatment. Planting wheat greatly increased the loss of soil N. Application of fertilizers stimulated the mineralization of newly added organic N and application of organic matter reduced the mineralization, but stimulated microbial transformation of newly added organic N.

Organic matterRed soilTransformationCultural practice

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