Fruit planting: technical measures to promote flower and protect fruit of pomelo

1. In order to promote the early flowering of fruit trees, we must control the vegetative growth of the tree potential, turn the growth center to reproductive growth, and promote flower bud differentiation in the year before fruiting: 1. Control the vigorous growth of vertical roots, cultivate a large number of lateral roots and parallel roots, and promote flower bud differentiation; 2. Support, pull and drop branches, increase the angle between branches and stems, weaken vegetative growth and promote flower bud differentiation. 3. The vigorous young trees cut the lateral branches in 1-2 circles from September to October. 4, pay attention to drainage, water control, and cut off part of the roots in autumn, resulting in physiological drought of the plant to promote flower bud differentiation. Second, fruit protection 1, increase tree nutrition, strengthen fertilizer and water management, retain leaves as far as possible to prevent abnormal fallen leaves; 2, control the number of flowers, remove those malformed flowers and over-dense flowers; 3, regulate spring shoots and erase summer shoots. Too many spring shoots and excessive consumption of nutrients will aggravate fruit drop, and spring shoots should be regulated after budding. Mainly wipe off the strong spring shoots (vegetative branches) in the upper part of the branch crown, flower branches with more than 5 leaves, and late spring shoots; when the summer shoots sprout new buds, remove the young shoots many times until the fruit is fixed in mid-July and begin to release them; 4, control diseases and insect pests: common diseases and insect pests include red yellow spider, leaf curl moth and resin disease; 5, spraying plant hormones, such as cytokinin, phytin, Jinyunda-120 and so on.