Took the Yanyuan early-bearing walnut trees as the experimental subjects, an in-field experiment on foliar fertilizers was conducted in Yanyuan County. Six treatments were set up to explore the effects of foliar fertilizers on the yield and quality of Yanyuan. The results showed that compared with the control with clean water, spraying foliar fertilizers could significantly increase the yield per tree, the quality of individual fruits, and the kernel extraction rate of walnuts. Among them, the treatment of 0.5% urea+0.3% phosphoric acid potassium+800 times humic acid foliar fertilizer had the best effect, with a 28.38% increase in yield per tree and an 8.38% increase in kernel extraction rate. In terms of quality, the amino acid and humic acid foliar fertilizer compound treatment increased the protein content by 18.46%, the fat content by 14.65%, and the content of mineral elements also significantly increased.

Juglans regia  /  foliar fertilizer  /  high altitude  /  yield  /  quality  /  Yanyuan County