以花定果要慎重盲目使用遭霜冻以花定果技术近年兴起，这方面试验研究也较多。其要点是苹果、梨于花序分离期按一定距离留足花序后，苹果对所留花序进一步疏去边花留一个中心花，梨则疏留一个边花。由于疏花早，养分损失少，能够起到壮树促叶、提高坐果和增大果个等诸方面... In order to spend the flowers to be blind blindly use frost to spend the fruit of the rise of technology in recent years, there are more experimental studies in this area. The main point is that apples and pears leave the inflorescences at a certain distance during the inflorescence separation period, and the apple leaves a center flower for further inflorescences while the pear retains a side flower. Due to early flowering, nutrient loss less able to play a strong tree to promote leaf, improve fruit set and increase the fruit and so on.