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The soil and luminous conditions for growing of four species: Ophrys insectifera, Orchis mascula ssp. signifera, O. purpurea and Platanthera chlorantha were determined. The experiments showed that the orchids grow on the soil of 7.4-7.7 pH, at low salinity and 62 to 117 g·kg⁻¹ organic matter content. The luminous conditions of plants growth are differentiated. At 3.7% of full light grew the Ophrys...
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