苹果根部病害防治技术苹果根部病害按其发病原因可分为两大类，一类是由于不良环境条件引起的生理性病害，一类是由病原菌寄生引起的侵染性病害。常见的侵染性病害主要有圆斑根腐病、根朽病、白绢病、紫纹羽病、白纹羽病等，统称烂根病。此类病引起根颈或根系坏死腐烂，地... Apple root disease prevention and control technology Apple root disease according to its causes can be divided into two categories, one is due to adverse environmental conditions caused by physiological diseases, one is caused by the pathogen parasitic diseases. Common infectious diseases are mainly round root rot, root rot disease, Sclerotium, purple line feather disease, white feather disease, collectively referred to as rotten root disease. Such diseases caused by necrosis of the root neck or root rot, to ...