APPLICATION OF VINEGAR RESIDUE SUBSTRATE IN NURSERY AND CULTIVATION OF TOMATO

The fermented vinegar residue substrate with different compositions of grass peat and vermiculite were used as nursery and cultivation substrates of tomato. We studied the effects of different nutrient solution concentrations and amount on tomato plant growth and fruit quality and chemical properties. Results showed that As for tomato seedlings of T4 (vinegar residue substrate: peat : vermiculite=54 : 36 : 10), the plant height, stem diameter, dry and fresh weight and other indicators of growth were significantly higher than control and other treatments. After transplanting ,with the increasing of nutrient solution concentration and dosage, the pH of cultural medium decreased and the range of these changes were between 6.79 to 6.29, but the EC values of the substrate increased and these changes were between 1.5 to 2.77. 1/4 Hoagland treatment was the most favorable for the growth of tomato, but it demanded more nutrient solution at flowering stage. The contents of soluble solids, soluble sugar and soluble protein were highest in tomato fruit under treatment 1/2 Hoagland by adding 900 mL solution every time. At fruiting period adding 1/2 Hoagland 900~1,200 mL nutrient solution can improve fruit quality and yield.