Citrus management in January: fertilize big trees and grow young trees

Recover the tree vigor and clear the garden after harvest

In January, the citrus was already at or nearing mature stage. The physiological activities such as fruit expansion, coloring, and sugar increase in the early stage consume a large amount of tree nutrition, and fruit trees urgently need nutrition. It is necessary to apply fertilizer in time to supplement the previous nutrient consumption, maintain good tree vigor and avoid defertilization of fruit trees.

In addition, January is the end of the physiological differentiation of citrus flower buds. After December of the previous year and the early part of this month, the physiological differentiation of flower buds of fruit trees is basically completed. Some measures can be taken to maintain the process of flower bud differentiation: continue to control water, and continue to control water before fruit harvesting, which is beneficial to maintain the sugar content and flavor of the fruit, and at the same time, it is conducive to the continued progress of flower bud differentiation; fertilization promotes flowers, pay attention to fertilization before and after fruit harvesting, and can be timely Supplementing the citrus nutrients consumed during fruit-bearing and supplementing enough nutrients to citrus is beneficial to the restoration of citrus tree vigor and the formation and development of flower bud primordia.

It is worth noting that spraying potassium dihydrogen phosphate on the leaf surface during the physiological differentiation of citrus flower buds can effectively improve the quality of flower bud differentiation, especially for vigorous citrus trees.

After harvesting, weeds and nearby parasitic plants should be completely eradicated, lichens, moss, dead piles and rotten fruits should be thoroughly removed; dead trees or trunks caused by longhorn beetles and resin diseases should be excavated; overwintering butterflies and moths on trees should be removed Pupa and scale insects, etc. After the orchard has been cleaned, spray pesticides for diseases and insect pests in a timely manner.

While clearing the garden with medicine, combine with foliar fertilizer to immediately replenish nutrients, so that the tree's vigor can be restored fastest through the leaf surface absorption, and the ability to resist stress can be improved. Foliar fertilizers are mainly high-phosphorus fertilizers, medium-trace elements and other fertilizers, combined with pests and diseases, sprayed 1-2 times.

After the fruit is picked, a pruning is performed to remove the piles, dead branches, diseased branches, cross branches, and hanging branches after the fruit is picked. For fruit trees with large crowns and dense branches, "open skylights" are used to make the trees ventilate and light, save nutrients, and have the effect of protecting flowers and fruits.

Strong shoots control flowers to expand the crown

The core of the management of young tangerine trees is to create the best growth environment for the tree body, so that the crown can be expanded rapidly, forming a good tree shape, and laying a good foundation for high and stable yield. For young trees that have not been put into production, the main purpose at this stage is to enhance tree vigor, expand the crown of fruit trees, and cultivate strong branches. If the small trees bloom at this stage, it will damage the large amounts of nutrients in the fruit trees and affect the healthy growth of the small trees.

Therefore, if you want a good citrus tree vigor, you must not only add sufficient nutrients to the citrus, expand the citrus canopy, but also control the flowers in time to reduce the nutrient consumption of small trees. The specific methods are as follows: First, spray plant growth regulators to prevent small trees from blooming, spray 920 after the autumn shoots mature to inhibit the differentiation of flower buds; second, perform irrigation measures on citrus to prevent small trees from blooming, after the autumn shoots mature In order to avoid drought in the garden, water should be irrigated and moisturized in time to ensure sufficient water for citrus; the third is to prevent small trees from blooming through fertilization management. Before spring shoots germinate, apply compound fertilizer to increase nitrogen content, which is conducive to citrus buds. , Promote the growth of shoots.

January is also the key period for pruning young trees. The main task of pruning young trees is to promote the rapid expansion of the crown and gradually form the main skeleton of the tree body to make the plants more robust. The pruning method is as follows: the vigor of the whole fruit tree should be balanced, and the master and slave should be clearly distinguished; the sapling should be pruned lightly, and the main side branches can be pruned slightly to guide the growth of the crown; for the branches that are severely affected by diseases and insects, they should Those branches must be pruned and re-spotted. It is very important to cultivate the tree shape of citrus small trees. If they are allowed to grow and do not take scientific and reasonable pruning measures, they will definitely not meet the requirements of high-yield tree shape, and they will not even be able to bear fruit. .

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