30 2 王 20 6 10 0 0-15 15-30 Depth from soil surface(cm) Average colonization across all fields was approximately 22% with higher colonization generally occurring in the upper 15 cm of the soil. 越橘浅层根系的侵染率较高 果树专业须士生深醒y@0⊙2 果树专业硕士生课程-yao2 Average colonization across all fields was approximately 22% with higher colonization generally occurring in the upper 15 cm of the soil. 越橘浅层根系的侵染率较高