核桃树的冬春管理核桃树为多年生高大乔木，根系发达，有十多种病虫害越冬。冬春治虫和管理是最好的时机．１、整形修枝。整形修剪病虫枝，枯枝，衰老枝，提．高抗病力，增强树势．２、刨除树干考裂皮和杂菌。涂刷药液或包扎等．３、拾毁落果。捡拾落果、落叶、枯枝杂草，... Management of walnut trees in winter and spring Walnut tree is tall perennial tree, developed root system, there are more than 10 kinds of pests and diseases overwintering. Spring pest control and management is the best time. 1, plastic pruning. Trimming pest branches, dead branches, aging branches, mention. High disease resistance, enhance the tree potential. 2, remove the trunk cracked skin and miscellaneous bacteria. Brushing liquid or dressing. 3, pick up the fallen fruit. Pick up and drop fruit, leaves, litter weeds, ...