Fecha de publicación: 17/04/2020 Fuente: Wipo tomato The invention relates to a light source distribution method and light source parameters for promoting growth of tomato seedlings in winter or lack of light. An application of the method for promotingthe growth of the tomato seedlings in a plant factory includes the aspect of providing artificial light sources for the tomato seedlings during growth to promote the growth of the tomato seedlings. The method has the following beneficial effects: according to the application of the method for promoting the growth of the tomato seedlings in the plant factory, corresponding spectrums suitable for the growth stage are supplemented in the growth process of the tomato seedlings to provide the plant with the most suitable light supplement solution, the method covers the vegetative growth period of solanum lycopersicum from seeding to flower bud appearance, improves the absorption rate and utilization rate of the solanum lycopersicum to light energy, promotes the conversion of electrical energy into biochemical energy of the solanum lycopersicum, ensures the strong seedling rate of the tomato seedlings in winter or lack of light, promotes precocious flowering and improves quality of the seedlings.