果树环割现状及研究意义1.果树环割国内研究现状果树环割是指果农用刀具将果树的直立旺枝皮层环状割断,即根据枝条旺势相距1cm环割1-3圈,这种方法切断了果树韧皮部筛管的通路,阻碍叶片制造的有机养分向根系输送,而积累在环割圈的上部,并使生长素浓度下降,抑制环割上部枝条的营养生长,从而达到令果树促 Fruit ring circumcision status quo and research significance 1. Fruit ring circumcision domestic research status Tree ring cutting refers to the use of agricultural tools to fruit trees upright cortex cortex ring cut, that is, according to the branches of the potential 1cm ring cut 1-3 laps, this method Cut off the path of the phloem sieve of fruit tree, hinder the production of organic nutrients leaves to the root transport, and accumulated in the upper part of the ring circle, and reduce the concentration of auxin to inhibit ring cutting upper vegetative growth of branches to achieve