ObjectiveAiming at the problems of low accuracy and incomplete coverage of image recognition of phenological period of apple in natural environment by traditional methods. an improved ResNet50 model was proposed for phenological period recognition of apple. MethodsWith 8 kinds of phenological period images of Red Fuji apple in Sichuan plateau area as the research objects and 3 sets of... https://safeersappliancers.shop/product-category/bosch-serie-2-kgn34nw3ag-frost-free-fridge-freezer/