Generally smooth foliage plants absorb poorly. Foliar spraying can be used when the 10%-20%; glucose can be directly watered flowers. Just because of the high cost so rarely used, so if through the foliar spraying its effect will be better can be, stir well can be; 3-4 days once. I spray my orchids with 20% concentration, mix it with some compound fertilizer and take some milk powder everyday. In addition you want to make a dry fertilizer can also be, with warm water soaked into milk cooled water can be poured, it is the direct energy of the plant, so the concentration needs to be properly reduced. Mix the milk powder with grass ash, usually you can 1-2%. The effect is very good.

Gluconolactone, abbreviated as GDL or endolactone, is produced by oxidizing glucose to gluconic acid or its salts, through purification and desalting, decolorization, concentration and crystallization. It is used as an acidifier, preservative and antiseptic in the food industry, and is a multifunctional food additive.