| 摘要 |
PURPOSE: Provided is a composition of nutrient solution which is conveniently and effectively used in fertigation culturing a shallot. The composition is diluted with water according to the conditions of cultivated land, to be optimum concentration. thereby high quality of shallots is mass harvested. CONSTITUTION: The composition of nutrient solution consists of 15-25wt.% of water soluble nitrogen, 3-7wt% of water soluble phosphoric acid, 23-33wt.% of water soluble of kali, 18-22wt.% of water soluble calcium, 2-6wt.% of water soluble magnesium, 1-2wt.% of microelement and 0.5-1.5wt.% of water soluble pigment, based on the total weight. Wherein, the microelement is one selected from boron, zinc, copper, molybdenum. The composition is separately packed into agent 'A' consisting of 10.5wt.% of nitrogen, 0.5wt.% of water soluble phosphoric acid, 33.5wt.% of water soluble kali, 3.0wt.% of water soluble magnesium, 0.09wt.% of water soluble boron, 0.02wt.% of water soluble zinc, 0.007wt.% of water soluble copper, 0.005wt.% of water soluble molybdenum and 1wt.% of water soluble pigment; and agent 'B' consisting of 11wt.% of water soluble nitrogen and 22.0wt.% of water soluble calcium. |
