A pot experiment was conducted to study the effects of different biogas slurry irrigation amount and different slurry concentrations on the growth of Eucalyptus seedlings. The results showed that the difference of increment in seedling height and ground diameter were not significant when the biogas slurry irrigation quantity was 14. 0-24. 5 L. Eucalyptus seedlings could tolerate certain level of irrigation biogas slurry. When the amount of the biogas slurry irrigation was 21. 0 L,the seedling height increme...