Table 6.
Content of trace elements in different types of fertilizers.
| Fertilizer | Cd | Cu | Ni | Pb | Zn | NO3− |
|---|---|---|---|---|---|---|
| (mg kg−1) | (%) | |||||
| Urea | 0.21 | 1.5 | 2.6 | 0.5 | 3.1 | 46 |
| Slow release | 0.01 | 2.1 | 3.8 | 0.06 | 5.4 | 32 |
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