FERTILIZER COMPOSITION FOR HYDROPONIC CULTIVATION OF TOMATO

摘要

PURPOSE: To reduce generation of physiological trouble in hydroponic cultivation of a tomato and to reduce the number of times for replacing a nutrient medium while enabling the yield to be increased. ;CONSTITUTION: In the fertilizer component for hydroponic cultivation of a tomato which contains nitric acid, ammonia, phosphorus, potassium, calcium and magnesium, nitric acid is regulated to ≤460ppm (mg/l) and ammonia is regulated to ≤40ppm (mg/l). Further, nitrogen contained in nitric acid and ammonia is regulated to ≤140ppm (mg/l) and, furthermore, phosphorus is regulated to about 70-85ppm (mg/l).;COPYRIGHT: (C)1993,JPO&Japio