果树再植病及防治老果园更新重栽果树时，会发生成活率极低．大致仅能达到５０％左右，成活的果树也生长不良，表现为植株矮小．生长衰弱，生长量极小，重茬苹果树的生长量可减少３０．２９％。重茬桃减少３７．８％，枝条细短，叶片小．失绿，早落叶。根系发育不正常，多... Regeneration of fruit trees and the prevention and treatment of old orchards Renewal of replanting trees, there will be very low survival rate. Generally only about 50%, the survival of fruit trees are poor growth, manifested as short plants. Growth weakness, growth is minimal, crop growth of apple crop can be reduced by 30.29%. Re-peach reduced 37.8%, thin branches, leaves small. Lost green, early leaves. Root growth is not normal, more ...