Nutrient solution for improving photosynthesis of oil peony

The invention discloses a nutrient solution for improving photosynthesis of oil peony. The nutrient solution is prepared from the following raw materials in parts by weight: 3-5 parts of salicylic acid, 120-140 parts of rice bran, 4-6 parts of humic acid, 1.1-1.3 parts of trypsase, 37-43 parts of peanut cake powder, 40-45 parts of vinegar residues, 0.8-1.0 part of alpha amylase, 12-15 parts of water glass, 5-6 parts of sodium borate, 150-170 parts of bred maggots and an appropriate amount of water. The nutrient solution disclosed by the invention is used for performing treatments of irrigating, spraying or soaking plant and oil peony tissues and seeds, and can effectively promote the growth and morphogenesis of the oil peony and accelerate germination of the seeds, and meanwhile, the added salicylic acid, humic acid and water glass act together to change ultra microstructures of leaves of the oil peony, increase the content of chlorophyll and enhance the activity of Rubisco carboxylase, thereby improving the