近年来我场对多余的低劣果树品种大力推行“倒干更新”换种新技术,提高了果园的经济效益。 春季果树萌芽前后(3月下旬至4月中旬),在改接树的根颈(15厘米以内)用锯横截1/2～2/3,再在横锯口上部约为根颈横锯2～2.5倍处,自上而下锯一“弓”形纵口直至下部锯口,将这一木块剔除,削平锯口,在植株上部向横锯口的对面用力,下部纵锯 In recent years, I strongly promoted the replacement and replacement of new and poor fruit trees with a variety of new fruit trees and improved the economic benefits of orchards. Before and after the sprouting of spring fruit trees (late March to mid-April), the root of neck (within 15 cm) of the tree is cross-cut 1/2 to 2/3, 2 ~ 2.5 times, from top to bottom Saw a “bow” shaped longitudinal mouth until the lower kerf, remove the piece of wood, flattened kerf, the plant in the cross to the opposite side of the cross-cutting force, the lower part of the vertical saw