Identification of raw herbs Character identification Cane cylindrical, multi-branched, diameter 0.2-1cm; surface red-brown, with punctate lenticels and adventitious roots; qualitative hard, fracture section fibrous, yellow-white, sometimes hollow. Leaves opposite, shortly stipitate, full blade elliptic or ovate-elliptic, 2-10 cm long, 0.8-3.5 cm wide, apex acuminate or obtuse, sometimes dimpled, margin slightly recurved, upper surface Yellowish green, lighter under surface, veins pinnate, clearer under surface, slightly raised; leathery, visible white cotton-like filaments when broken. Gas slightly, bitter taste. It is better to have more leaves and green color. Microscopic identification of stem cross sections The plug layer is a series of tangentially elongated cells containing brown matter. Cortical striatal cells are arranged in rings, some contain calcium oxalate crystals, and there are scattered stone cell clusters and fiber bundles on the inner side of the cortex. Staple fiber bundle ring, accompanied by stone cells. Vascular bundles are tough, with a small number of secretory cells scattered in the phloem, forming a layer of loops, well-developed xylem, up to 130 μm in diameter of the catheter, 1-3 rows of wood ray cells, and lignin, with fiber bundles and stone cells inside the endogenous phloem. Scattered, and some surrounding parenchyma cells contain calcium oxalate crystals, often ruptured in the pith. This product has parenchyma distribution in the parenchyma. Leaf cross section The upper and lower epidermis have one column and the lower epidermis has stomata and non-glandular hairs. Two to three columns of palisade cells pass through the main vein. The main vascular bundle is of a tough type, a shallow trough, and there are fiber groups on the outside of the phloem. The following are more. There are milk tubes in parenchyma. Parenchyma cells contain calcium oxalate crystals and clusters of crystals. Physical and chemical identification Thin layer chromatography to take this product powder 2g, add ethyl acetate 20ml, water bath reflux 30min, filtered. The filtrate was concentrated to 3 ml as a test solution. Another luteolin, take ethyl acetate dissolved into a solution containing 1mg per 1ml as a reference solution. The above two solutions were respectively spotted on a silica gel G plate, developed with toluene-ethyl acetate-formic acid (5:4:1), taken out and allowed to air dry, and then sprayed with a 1% aluminum trichloride ethanol solution over the ultraviolet. The fluorescence was observed under a light lamp (254 nm), and the yellow fluorescent spot was observed at the same position in the chromatogram of the test sample as that of the reference substance. Hydroponics is a subset of hydroculture, the method of growing plants without soil, using mineral nutrient solutions in a water solvent. Terrestrial plants may be grown with only their roots exposed to the mineral solution, or the roots may be supported by an inert medium, such as perlite or gravel. The nutrients in hydroponics can come from an array of different sources; these can include but are not limited to waste from fish waste, duck manure, or normal nutrients. Greenhouse Hydroponic System,Greenhouse A Hydroponics,Greenhouse Flat Hydroponics,Greenhouse Vertical Hydroponics JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.engreenhouse.com