【作者】 王丽琴； 魏钦平； 杨学奎； 魏绍冲；

【Author】 Wang Liqin,Wei Qinping,Yang Xuekui, and Wei shaochong (Shandong Agriculture University,Taian 271018)

【机构】 山东农业大学园艺系；

【摘要】 本试验以盆栽5年生苹果衰弱树为试材,研究了不同根系更新措施对树势复壮的效果。结果表明,秋剪根显著增加了新生吸收根数量、吸收面积、叶片质量和壮短梢数量,可维持中庸树的树势;春剪根则使迅速生长根和中长梢数量显著增加,对树势有较强的更新复壮能力;换大盆后根系与枝叶状况均有改善,因根系生长空间受限而导致的树势衰退,扩穴是有效的解决措施。更多还原

【Abstract】 Effects of pruning roots of apple tree cultured in pot was studied (4 years old). Pruning in autumn apparently increased the quality of absorbing roots, absorbent area and the short shoot proportion, The long and middle shoot percentage, shoot growth and the leaf condition were quite improved. Pruning in spring increased the quality of absorbing roots. The long and middle shoot proportion and shoot length rose, the shoot width and the leaf quality fell. Transfering to larger pot (no pruning) increased the quality and absorbing ability of new roots in the border area of pot. With regard to shoot width and short shoot percentage, it is the largest one of all the treatments.更多还原