The invention discloses a
pear pest and
disease prevention and control method. The
pear pest and
disease prevention and control method is characterized by comprising the steps that cultivation management is strengthened, an applied
organic fertilizer is increased to improve the
disease-resistant ability of tree bodies, intertillage and
weed removal are performed in time, accumulated water in an
orchard is discharged, the temperature is reduced, the ventilating and light-transmitting capacities are enhanced, a
phosphorus potassium fertilizer accounting for no less than 60% of the total
fertilizer percentage is applied, and
tree trunk whitening is suitable for implementation after leaf falling but before freezing up, wherein the whitened positions are mainly tree trunks;
overwintering microbial sources are wiped out, the
orchard is thoroughly swept before
disease occurrence to remove fallen leaves and fruits in the
orchard, the fallen leaves and fruits are destroyed in a centralized mode, and 4 Beaume degrees of
lime sulfur is sprayed to eradicate the
overwintering microbial sources; after blossom fall of
pear trees, one-time foliar spraying is performed every 5-10 days, spraying continues for 3-5 times, and 600-800 times of liquid of 50% Tuzet
wettable powder is sprayed for one time before fruit bagging, wherein a foliar spraying agent is prepared by mixing 15%
triadimefon and 50%
carbendazim according to the ratio of 3:1 and then using 1000-1500 times of water to perform
dilution.