Agricultural and Biological Sciences
4 years ago

High nitrogen fertilizer rates lead to serious soil nitrate leaching.

PubMed
[Characteristics of soil nitrate accumulation and leaching under different long-term nitrogen application rates in winter wheat and summer maize rotation system.]
Ling Yun Weng, Xiao Qia Yang, Min Lyu, Si Ying Xin, Shuai Chen, Wen Qi, Jing Wei

Paper Summary

The study looked at how different amounts of nitrogen fertilizer affected soil nitrate levels in a wheat and maize rotation system. They found that higher nitrogen levels led to more nitrate accumulation in the soil, especially at deeper levels. This can cause nitrate leaching, which can contaminate groundwater. The optimal nitrogen application rate for balancing crop yield and soil nitrate accumulation was found to be 180 kg·hm-2.

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