The invention discloses a water culture method for tomatoes. The method includes the following steps of placement of plates for loading soil, wherein the porous plates are arrayed orderly, the
seedling culture soil is loaded into the porous plates, and the
soil surface is flattened through scraping to obtain to-be-sown plates; dibbling and covering with soil, wherein tomato seeds are placed on theto-be-sown plates, then the
seedling culture soil is poured into the to-be-sown plates, and the
soil surface is flattened through scraping to obtain
sowing plates; watering and
germination, wherein watering is conducted on the
sowing plates several times, and a
greenhouse is sealed for
germination to obtain tomato
seedling pots; planting, wherein planting boards are prepared before planting, andthen tomato seedlings are planted onto the planting boards; management, wherein sufficient supply of
nutrient liquid in a
nutrient liquid circulating
system is maintained, and the EC value and pH of the
nutrient liquid are kept stable. In this way,
moisture and nutrients are saved, various nutrient elements during water culture are prepared scientifically according to different growth periods, aremore reasonable and scientific and cannot be lost, the environment is protected, management is easily carried out, manpower consumption is reduced, successive
cropping obstacles of soil are avoided,regional limitation is avoided, and the space is fully utilized.