| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fertilizer for hydroponics for growing a low potassium vegetable in which the content of potassium is reduced without raising the content of sodium, and that can be eaten even by a renal patient being relieved, and to provide a hydroponics method of the low potassium vegetable. <P>SOLUTION: A period L from sowing to harvesting is set beforehand according to a vegetable to be grown, a given period that goes back from the harvesting is assumed to be a final growing period L2, a period ahead of the final growing period is assumed to be an initial growing period L1. In the final growing period, the fertilizer for the hydroponics including neither potassium nor sodium substantially, and including calcium, magnesium, phosphorus, nitrate nitrogen, and ammonia nitrogen as principal ingredients, wherein the pH value of the aqueous solution of them becomes 5-9 is used, and in the initial growing period L1, the fertilizer including potassium, calcium, magnesium, phosphorus, and nitrogen as principal ingredients is used. <P>COPYRIGHT: (C)2012,JPO&INPIT |
