The present invention relates to a method for cultivating functional crops using nano organic germanium and nano organic selenium, in which nanosized organic germanium and nanosized organic selenium, which are prepared in nanoscale sizes by performing one or more selected from a method for applying physical energy (heat or pressure) to organic germanium and organic selenium, a method for applying electrical explosive energy, and a chemical bonding process, are irrigated or foliar-applied at least twice at the time when the growth and development of crops are most vigorous and at the time of maturation to bear fruit, wherein the prepared nanosized organic germanium and nanosized organic selenium are one-component materials which are dispersed in water as a solvent in a nanoscale state.
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