Pear tree frost damage can cause damage to flower buds, branches, branches, root necks, stems and fruits. It is easy to induce rot to cause the whole plant to die. Control methods: (1) selection of cold-resistant varieties. In the northern high-cold areas should be mainly Qiuli plow, sand pear system. (2) Pay attention to the selection of orchard garden sites and strengthen the construction of shelterbelts with vertical main wind direction. Make full use of the superiority of the microclimate and reduce the degree of frost damage to the tree. (3) Strengthen fertilizer and water management. Reasonably apply fertilizer and water. The tree nutrients accumulate, and the cold resistance is strong. (4) Use high contact technology to improve the cold resistance of the tree. (5) Overwintering protection, removing snow from the trees and reducing frost damage. (6) Use 72% of streptomycin soluble powder for 4000 times, to reduce ice nucleation bacteria and prevent freezing damage.
