Flower planting soil with water-retaining and nutrient-preserving effects

The invention provides flower planting soil with water-retaining and nutrient-preserving effects. The flower planting soil is prepared by mixing the following components: 22 to 26 parts of humus soil,4 to 6 parts of perlite particles, 8 to 10 parts of diatomite, 5 to 7 parts of sepiolite fabric powder and 14 to 20 parts of turfy soil, wherein the perlite particles have a particle size in a rangeof 5 to 10 mm; the diatomite has a particle size in a range of 0.2 to 1 mm; the sepiolite fabric powder has a particle size in a range of 2 to 4 mm; and the humus soil and the turfy soil have particlesizes of no more than 200 microns. According to the invention, the diatomite, the sepiolite fabric powder and the perlite particles with microporous structures are selected to mix with the humus soiland the turfy soil in certain proportions and certain sizes; and due to reasonable combination of particle size grades, and particularly due to a large number of microporous structures, the flower planting soil can exert the ef