盛果期的大核桃树,树冠大部分接近郁闭或已郁闭,外围枝量逐渐增多,且大部分成为结果枝。同时,由于光照不足,部分小枝干枯,主枝后部出现光秃带。结果部位外移,易出现隔年结果现象。因此,这个时期修剪的主要任务是:调整营养生长和生殖生长的关系,不断改善树冠内的通风透光条件,不断更新结果枝,以达到高产稳产的目的。其修剪要点是:疏病枝,透阳光;缩外 Most of the large walnut trees in the fruit-bearing period, most of the canopy close to the canopy or have been closed, the amount of peripheral branches gradually increased, and most of the results become branches. At the same time, due to lack of light, part of the branchlets withered, the back of the main branches appeared bald band. The results of site relocation, prone to the phenomenon of the second year results. Therefore, the main tasks during this period of pruning are: to adjust the relationship between vegetative and reproductive growth, to continuously improve the ventilation and light conditions inside the canopy, and to constantly update the results of the branches so as to achieve the purpose of high and stable yield. The pruning points are: sparse branches, through the sun; shrink outside