1)春剪时期。3月上旬至4月下旬,最迟不得超过5月上旬。 2)春剪原则。幼树及初结果树以促树旺长,发枝扩冠为核心,整形结果两不误。大树因树定产,以花定果,避免大小年,防止树体早衰。 3)春剪方法。①拉枝变向。从春季树液流动至萌芽前,采用撑、拉、别、垂、缚引等办法,将主棱角度(特别 1) Spring shear period. From early March to late April, no later than early May. 2) Spring shear principle. Young trees and early-fruiting trees to promote the tree Wang Chang, hair extension crown as the core, shaping the correct results. Trees due to yield, to spend the fruit, to avoid the size of the year, to prevent the premature decline of the tree. 3) Spring cut method. Pull branches to change. Flow from the spring to the sprout before the tree, the use of support, pull, do not, vertical, tied lead and other methods, the main edge angle (especially