It should be noted that the use method and effect of chlorophyll control may vary according to crop types. For solanaceous and melon crops, the use of chlorophyll can make the plants stout and dwarf, the leaves turn dark green, the leaves are small and thick, and the flowering amount increases. At the same time, it can also protect flowers and fruits and prevent the occurrence of deformed fruits. For leafy vegetables, the use of chlorophyll can control the vigorous growth of crops, improve the commercial value of products and prolong the harvest time. Adjust the balance between vegetative growth and reproductive growth of plants. When the vegetative growth of crops is too vigorous (such as the rapid elongation of stems and vines), regulating the transformation of crops to reproductive growth (more flowers, large and excellent flowers, easy fruit setting, large fruit shape and fast growth) also has a good control effect on leaf diseases.