▎ 摘　　要

NOVELTY - Graphene modified indoor hydroponic plant culture liquid comprises a basic culture solution and an ammonium polyphosphate-organic bentonite-graphene compolex nanomaterial additive, The ammonium polyphosphate-organic bentonite-graphene complex nano material is obtained by adding 70-85% phosphoric acid into a reactor, heating and stirring, heating to 75-80 degrees C, adding urea and organic bentonite, heating to 110-120 degrees C, adding nano graphene, heating to 120-130 degrees C, reacting and stirring for 10-20 minutes, treating the product at 160-180 degrees C for 3-5 hours and cooled to room temperature. USE - Used as graphene modified indoor hydroponic plant culture liquid. ADVANTAGE - The culture liquid ensures plants do not rot, no odor, no odor, and have normal growth when cultured indoors and has good dispersivity and homogeneity. DETAILED DESCRIPTION - Graphene modified indoor hydroponic plant culture liquid comprises a basic culture solution and an ammonium polyphosphate-organic bentonite-graphene complex nanomaterial additive, where each 8-12 pts. wt. of an ammonium polyphosphate-organic bentonite-graphene complex nanomaterial additive per 100 pts. wt. of the basic culture solution. The ammonium polyphosphate-organic bentonite-graphene complex nano material is obtained by adding 70-85% phosphoric acid into a reactor, heating and stirring, heating to 75-80 degrees C, adding urea and organic bentonite, heating to 110-120 degrees C, adding nano graphene, heating to 120-130 degrees C, reacting and stirring for 10-20 minutes, treating the product at 160-180 degrees C for 3-5 hours and cooled to room temperature. An INDEPENDENT CLAIM is also included for preparing the graphene modified indoor hydroponic plant culture liquid, comprising (i) adding 70-85% phosphoric acid into a reactor, heating and stirring, heating to 75-80 degrees C, adding urea and organic bentonite, heating to 110-120 degrees C, adding nano graphene, heating to 120-130 degrees C, reacting and stirring for 10-20 minutes, treating the product at 160-180 degrees C for 3-5 hours and cooled to room temperature to obtain ammonium polyphosphate nano-organic bentonite/graphene complex nano material, (ii) heating the basic culture solution to 30-35 degrees C, pre-stirred for 20-30 minutes, adding ammonium polyphosphate-organic bentonite/graphene complex nanomaterial, stirred at a speed of not less than 1000 revolutions/minute for 30 minutes to obtain a semi-finished product of a culture medium for hydroponics in a modified graphene interior and (iii) ultrasonically strengthening the semifinished product of the hydroponics plant culture medium in the graphene modified room for 10-20 minutes and removing the impurities by filtration.