How to prevent late frost

First of all, choose the late frost resistant varieties suitable for cultivation in this area.

The second is to delay the flowering period, so that the flowering period is after the late frost. Such as pear orchard irrigation or sprinkler irrigation, B9 spraying before flowering, trunk coloring, etc.

The third is the smoking method. According to the weather forecast, a number of smoke piles will be set up in the orchard the night before the frost. When the temperature in the canopy drops to 65438 0℃, smoke will be released, which will cover the pear orchard, reduce the ground heat dissipation and warm the air in the orchard.