Using urine as fertiliser. A man is using urine collected from a local school to water apple trees. Urine contains nutrients such as nitrogen,potassium and phosphorus,which are the main ingredients of industrial fertilisers. Photographed near Shanghai,China | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Berrod, Thierry / Mona Lisa Production |
Bildgröße: | 5125 px × 3417 px |
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