不同修剪量对不同树势甜樱桃生长的影响

Effect of Different Pruning Amount on the Growth of Sweet Cherry of Different Growth Potential

以3年生的“美早”为试验材料,研究了不同修剪量(A1修剪量为1/2,A2修剪量为1/4,CK为对照不修剪)对壮树、中庸树、弱势树3种“美早”甜樱桃枝条长度、枝条粗度、发枝数及花芽分化的影响。结果表明,幼龄期的“美早”甜樱桃枝条的生长量、花芽分化率在不同树势间有不同的反应,壮树和中庸树对中剪的反应好于弱势树和对照;弱势树对轻度修剪的反应好于中度修剪。从树体生长来看,枝条长度和粗度的生长对中度修剪的反应好于轻度修剪;从花芽分化来看,轻度修剪好于中度修剪。

The 3-year-old“Meizao”was used as experimental material,the effects of different pruning(A1 pruning amount is 1/2,A2 pruning amount is 1/4,CK is not pruning)on branch length,branch thickness,branch number and flower bud differentiation of three kinds of“Meizao”sweet cherry were studied.The results showed that the growth rate of the branches and the differentiation rate of the flower buds of the young“Meizao”sweet cherry had different responses among different growth potential.The response of strong and medium trees to medium pruning was better than that of weak and contrast trees;the response of weak trees to mild pruning was better than medium pruning.From the perspective of tree body growth,the response of branch length and roughness to medium pruning was better than mild pruning;from flower bud differentiation,mild pruning was better than medium pruning.