核桃放任树的改造修剪核桃的修剪时间如掌握不当，极易由伤口产生伤流。伤流过多，会导致养分、水分的大量流失，有碍正常发育。核桃的伤流时间能长达６个月，即从１１月中旬落叶起到翌年春季萌芽展叶为止。因此，核桃修剪的适宜时期应定在采收果实后到叶片变黄之前，或于... Walnut tree tree pruning trim pruning time improper grasp, such as wounds easily produce wounds. Injury too much, will lead to nutrient, water loss in large quantities, hinder normal development. Walnut injury time can be as long as 6 months, that is, from mid-November deciduous leaf sprouting leaf until the following spring up. Therefore, the appropriate period of walnut pruning should be set after harvesting the fruit leaves to yellow, or in ...