The invention belongs to the technical field of tree cultivation, and discloses a 
greenhouse cultivation method of apple pears, the apple pears and a tea for reducing three highs. From fruits in the myrtle family and 
psidium guajava, an apple 
pear species is selected through experimenting in a northern 
greenhouse to culture 
grafting and planting seedlings, and field planting is conducted; soil improvement, 
seedling recovering and 
seedling accelerating are conducted; after 
seedling recovering, fruit setting is conducted in florescence, and 
topping is conducted on the portion, between two opposite leaves, above each 
branch flower 
bud to generate branches and buds. 
Pear trees cultivated through the method bear fruits three months earlier, the equality is good, the fruits are big, the taste isgood, and the trees can be planted nationwide, while traditional apple 
pear trees can only be planted in the south; by means of the method, the problems are solved that the apple 
pear trees cannot beplanted in the north or be planted or cultivated in areas with the temperature lower than 5 DEG C in winter, the yield is low, lignification happens to fruits, the surfaces of the fruits are not smooth, and the 
sugar content is low.