Spring is an important season for citrus germination, germination, flowering and reproduction. It is particularly important to strengthen the management of citrus in spring. We should draw up the annual plan, formulate the annual management plan and implement the spring management measures as soon as possible. Let's take a look at the technical points of citrus spring management.

Key points of citrus soil management technology

1, shallow tillage and ditch drainage in orchard. In early spring, turn over the orchard15-20cm to promote low temperature recovery and water and fertilizer conservation. For citrus orchards rebuilt in low-lying areas or paddy fields, open the drainage ditch to introduce water into the pond.

2. Rational intercropping or planting green manure is the main measure to improve the organic matter content in orchard. It is forbidden to plant tall crops in the orchard, and white clover, red clover, peanuts and beans are planted as green manure, so as to increase the content of soil organic matter, improve the ecology of the orchard and promote healthy planting.

Key points of citrus fertilizer and water management

1, fertilization: follow the principle of organic fertilizer as the main and chemical fertilizer as the auxiliary. Organic matter: l500 kg clear water fertilizer is applied per mu every year for irrigation. Chemical fertilizer: the combination of phosphorus and potassium fertilizer is the main nitrogen fertilizer to ensure adequate nutrient supply and spring shoot germination during the recovery period of trees.

2. Irrigation in spring is often dry, so we should pay attention to drought resistance to ensure normal germination in spring, and late-maturing citrus will not lose fruit.

Management techniques of citrus top grafting trees

(a) check the survival rate and patch. If the survival rate of grafted plants last autumn was less than 80%, replanting should be done in time after the rain festival.

(2) anvil cutting and unbinding.

(3) plastic trimming. When the new shoot grows to 8- 10 leaves, attention should be paid to removing the core. For the trees grafted last spring, cut short the main branches, extend the branches, and appropriately delete the clustered branches or dense branches.

(4) Fertilizer and water management. The application amount of germination accelerating fertilizer is equivalent to that of young trees and big trees.

Integrated control techniques of citrus diseases and insect pests

Adhere to the plant protection policy of giving priority to prevention and comprehensive control, and fully implement the principle of economic, simple, safe and effective control. First, standardize prevention and control measures, effectively standardize production behavior, change the bad habits of unknown situation, indiscriminate use of drugs by unknown objects and random prevention and control, gradually change to agricultural prevention and biological control, and vigorously apply green physical comprehensive prevention and control technologies such as hanging lights in orchards, yellow stick insects, trapping bottles and biological mites. Second, rational drug use, constantly improve the quality of pesticide application and control effect, reduce the concentration and frequency of pesticides and acaricides restricted by the state, and guide orange farmers not to use pesticides with high toxicity and high residue prohibited by the state.