Too high or too low temperature will reduce the quality of pears. Generally speaking, the suitable temperature for pear fruit development is 25-30℃. Pears also need dormancy, and the dormancy period of pears needs a low temperature below 7℃ for more than 60 days. Germination and growth need a temperature above 65438 00℃. Above 20℃, pear branches grow vigorously. Moreover, fruit setting at flowering stage needs to consume a lot of nutrients, so erasing these buds can also save nutrients and promote fruit setting. These buds usually grow on stumps, near incisions, and at branches, so fruit farmers should observe them carefully.

There is also the temperature in spring, so we should pay attention to the occurrence of late spring cold and pay close attention to the weather changes. If the temperature drops too low, the straw must be burned in the pear orchard to release smoke (also called smoking) to ensure the normal flowering and germination of pear trees. Tomb-Sweeping Day is the best choice for flower thinning. Be sure to control the number of fruits in the tree (pears reaching 4.5 are not commercial fruits). According to the age and crown size of fruit trees, control the appropriate estimated yield. When the fruit is combed, the bad fruit shape or fruit surface is combed out to ensure the commodity rate and yield of the fruit.

Falling diseased branches, leaves, fruits, weeds, rotten fruits, etc. , and clean up the debris to long-distance incineration or deep burial, because the diseased branches and fruits must be carefully handled. The purpose is to keep the pear orchard clean and conducive to the healthy growth of pear trees. Pruning time: from the beginning of June 165438+ 10 to the end of June of the following year, 65438+ 10. Pruning methods vary with varieties and cultivation methods. Pruning pear trees is a cultivation measure to adjust the growth and fruit of each part of the crown.

Spraying pesticides on trunks and branches. Spray pear trees with Bordeaux solution or sodium rosin once. This will kill insects and prevent freezing! Pear trees are resistant to cold, drought, waterlogging and salinity. In winter, most areas and most varieties can safely spend the winter. But winter management is very important. About 5,000 ~ 7,000 kilograms of fully decomposed organic fertilizer, compost, manure and soil miscellaneous fertilizer can be used per mu. Compound fertilizer or compound fertilizer is 50-70kg per mu, and quick-acting nitrogen fertilizer such as urea is mixed with 5 5- 10/0kg. Dig a right ditch or a circular fertilization ditch.