Detailed Explanation of Techniques for Promoting Flowering and Preserving Fruit in Pomelo
I. Promoting flowering: To make the fruit tree bloom early, in the year before fruiting, the tree's vegetative growth must be controlled, the growth center must be shifted toward reproductive growth, and flower bud differentiation must be promoted: 1. Control the excessive growth of vertical roots, cultivate a large amount of lateral roots and parallel roots to grow, and promote flower bud differentiation; 2. Support, pull, and bend branches to...
I. Promoting flowering: To make the fruit tree bloom early, in the year before fruiting, the tree's vegetative growth must be controlled, the growth center must be shifted toward reproductive growth, and flower bud differentiation must be promoted:
1. Control the excessive growth of vertical roots, cultivate a large amount of lateral roots and parallel roots to grow, and promote flower bud differentiation; 2. Support, pull, and bend branches to increase the angle between branches and trunk, weaken vegetative growth, and promote flower bud differentiation;
3. For vigorously growing young trees, carry out 1-2 rings of girdling on lateral branches in September-October;
4. In autumn, pay attention to drainage and water control, and cut off part of the root system to cause physiological drought in the plant, so as to promote flower bud differentiation.
II. Preserving fruit: 1. Increase the tree's nutrition, strengthen fertilizer and water management, retain leaves as much as possible, and prevent abnormal leaf drop; 2. Control the amount of flowers, and thin out those deformed flowers and excessively dense flowers;
3. Regulate spring shoots and remove summer shoots. If spring shoots grow too abundantly, excessive nutrient consumption will intensify fruit drop, so spring shoots should be regulated after flower buds become visible. Mainly remove the vigorous spring shoots (vegetative branches) on the upper part of the canopy, flower-bearing branches with more than 5 leaves, and late spring shoots; when summer shoots sprout new buds, remove the tender shoots multiple times until after fruit set in mid-July, then begin to let shoots grow;
4. Control pests and diseases well: common pests and diseases include red and yellow spider mites, leaf-rolling moths, and gummosis; 5. Spray plant hormones: such as kinetin, Zhibaosu, Jinyunda-120, etc.