Research Article
An Intelligent Hydroponic Device for Astragalus membranaceus Bge. var. mongolicus (Bge.) Hsiao
Table 1
Hoagland nutrient formula.
| | Macroelements | Final concentration (mM) | Stock solution concentration (mM) | | KNO3 | 5 | 1000 | | Ca(NO3)2·4H2O | 5 | 1000 | | MgSO4·7H2O | 2 | 400 | | KH2PO4 | 1 | 200 |
| | Microelement | Final concentration (μM) | Stock solution concentration (mM) | | H3BO3 | 46.1 | 46.1 | | MnCl2·4H2O | 9.1 | 9.1 | | ZnSO4·7H2O | 0.76 | 0.76 | | CuSO4·5H2O | 0.32 | 0.32 | | Na2MoO4·2H2O | 0.24 | 0.24 |
| | Fe2+ | Final concentration (μM) | | | EDTA-Fe-Na | 50 | |
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