修剪时期对早实核桃枝条中淀粉含量的影响

Effect of Pruning Period on Branch Starch Contents of Precocious Walnut(Juglans regia L.)

为探明早实核桃适宜的修剪时期和修剪方法,以6年生早实核桃"绿岭"为试材,采用秋季修剪和春季修剪处理5个不同粗度的修剪枝,分析了不同修剪时期对枝条不同部位淀粉含量的影响。结果表明:T3处理呈现出春季修剪皮层淀粉含量显著高于秋季修剪;除T2处理外,其它处理均表现为春季修剪枝条木质部淀粉含量显著高于秋季修剪;1年生T4、T5处理和多年生T3处理春季修剪的枝条髓淀粉含量显著高于秋季修剪。因此,春季修剪比秋季修剪有利于枝条中淀粉的积累。

In order to determine the best pruning period and method, six-year-old ＇Lyuling~ walnut（Juglans regia L. ） were used as test materials,spring and autumn were selected as pruning periods,5 pruning branch diameter,the effect of different pruning periods on starch content in branch of different position were studied. The results showed that the starch content of branch T3 pruning in autumn was significantly higher than that of pruning in spring. The contents of xylem starch of all pruning branches in the autumn were significantly higher than that of pruning branches in spring except for T2 diameter branch. The pith starch contents of T4,T5 in one-year-old branches and T3 in perennial pruning branches in spring were significantly higher than that of pruning branches in autumru The pith starch contents accumulation of pruning branches in spring were significantly higher than that of pruning branches in autumn.