poplar bacterial canker杨树细菌溃疡
poplar cytospora canker杨树烂皮病
poplar ina bacterial canker杨树冰核细菌溃疡病
poplar canker pathogen杨树溃疡病菌
poplar canker disease杨树溃疡病
paulownia canker poplar canker泡桐溃疡病
poplar ice nucleation bacteria canker杨树冰核细菌溃疡病
poplar ice nucleation bacterial canker杨树冰核细菌溃疡病
canker in poplar杨树烂皮病