Abstract: Taking blueberry（Vaccinium uliginosum L.） as test material, the effects of different concentration of wood vinegar on the growth were studied. In the test process, with clear water as a control, 50, 100, 150, 200, 250, and 300 times diluted wood vinegar was used to water blueberry plants. The physical and chemical properties were measured to screen the most suitable concentration of wood vinegar. The results showed that the use of wood vinegar can effectively reduce the pH of the substrate, and could meet the requirements of blueberry for acidic conditions when diluted for suitable times. There was no obvious difference in growth indicators of the 6 wood vinegar treatments with different concentration. On quality indicators, the blueberries of 50 times wood vinegar are superior to other treatments in pigment content, soluble sugar content, which was not different to 100 times wood vinegar.

Key words: blueberry （Vaccinium uliginosum L.）, wood vinegar, pH, growth and development, fruit quality