金冠苹果盛果期大树在落叶前4～3周叶面喷施高浓度(4%～5%)尿素。喷施1次的处理增加短枝成花率;喷施1次、2次和3次均提高百短果枝2果座果率,对短枝新梢枝叶面积有增加作用;叶施尿素显著提高当年短果枝含氮量及翌年发育枝叶的氮素水平。各处理对百花序花朵数、短果枝果台副梢叶面积及果实大小没有显著的影响。 Golden Delicious Apple fruit trees in full bloom period 4 to 3 weeks before deciduous foliar spraying high concentrations (4% to 5%) of urea. Spraying once increased the rate of spruce shoots. Spraying once, twice and three times both increased the fruit rate of the short fruit branches, which increased the branch and leaf area of ​​short shoots. In the same year, the nitrogen content of short fruit branches and the nitrogen level of branches and leaves developing in the following year. Each treatment had no significant effect on the number of flowering flowers, the leaf area of ​​short shoots and branches and the size of fruits.