Studies on the incidence and chemical control of apple black spot disease in Hebei Province
YANG Rui, ZHANG Qi, SHI Chao-yang, WANG Shu-tong, WANG Ya-nan, CAO Ke-qiang, MENG Xiang-long, HU Tong-le
Acta Phytopathologica Sinica . 2021, (6): 943 -950 .  DOI: 10.13926/j.cnki.apps.000560