Bigen fruit seedling breeding base in Suqian

graft fruit seeding breeding base worker farmer Suqian China August 17 2024 skilled worker grafting fruit seedlings Bigen fruit seedling breeding base Jiangsu province Costfoto NurPhoto horticulture agriculture breeding nursery cultivation propagation grafting techniques fruit trees seedling production plant breeding agricultural practices plant nursery horticulturist fruit cultivation seedling grafting plant propagation Jiangsu agricultural base fruit production horticultural skills nursery management plant science.