Pear planting: which methods can not be used for pear tree pruning in summer?

What methods can not be used for pear tree pruning in summer? Please introduce the following three methods to guide pear tree pruning in summer: picking the heart, that is, pinching off the tender tip at the top of the new shoot that has not stopped growing; pruning, the new shoot that has not stopped growing has exceeded the length that should be left and has been Lignified, cut off the upper end, this method is still in use Twisting is in late May to early July, the length of more than 40 cm semi-lignified new shoots, 8 cm from the base, gently knead and twist 120 °~ 150 °, so that the inner wood is torn but not broken, the outer skin is bent but not broken, and then the upper part is bent to change the growth direction of the branch. But none of the above three methods can be applied to pear trees. Because most pear varieties have strong sprouting ability, weak branching ability, and new shoots stop growing early. Except that some varieties of sand pear line can shoot in autumn in fertile orchards in the south and places with more Rain Water, the new shoots of other strains grow only once a year, without autumn shoots and secondary branches. Therefore, these three methods can not be used for summer pruning, whether it is nursery nursery, or young trees and first-bearing trees. Because after the use of coring or pruning, shoots no longer germinate on medium seedlings and moderate trees, which shortens the original shoots and reduces leaves, affecting the nutrition production and accumulation of plants, which is not conducive to accelerating seedling formation, mature trees and early fruit and high yield; strong seedlings and strong trees can sprout shoots quickly after using coring and pruning, but they can only germinate two branches at most, and a lot of nutrients will be consumed when tapping. The most important thing is the branch tip, the base 0-12 cm section is the leaf scar that can not send the leaf tip, the development of the middle and upper part is not full and mature, and it has to be cut off when it is cut in winter, which completely causes the ineffective consumption of nutrients and the useless growth of the shoot. So pear tree summer pruning can not use coring and pruning. And because the pear branch is thick and brittle, the wood is not meticulous, if you use twist, it is often split or broken, so this method can not be used either. The long, thick, strong and upright shoots of pear trees can only be treated by pulling branches, other branches, ring peeling and ring cutting in summer cutting. Click for more pear tree planting techniques click to get more fruit planting techniques