How to manage citrus spring

Soil management

1. Excavate the drainage ditch. In the park, dig trenches and side trenches with a depth of 40 cm and a width of 30 cm in order to facilitate drainage during the rainy season and daily irrigation.

2, planting green manure. In the park, dwarfing crops such as clover, ryegrass, milk vetch, and legumes and vegetables are planted around tree trays to conserve water, prevent evaporation of soil moisture, and increase soil organic matter and porosity.

Fertilizer management

Nitrogen and phosphorus fertilizers are mainly used during the spring harvesting period of oranges, combined with external application of 2 urea+3 potassium dihydrogen phosphate leaves for topdressing; for citrus groves that have not applied base fertilizer in winter, topdressing at the drip line of tree trays Once a basal fertilizer, 50 jin of livestock manure, 0.2 lb of urea, 0.3 pound of phosphate fertilizer or ternary compound fertilizer are applied to each plant. The main use is strip sulcus or acupuncture, and the depth of sulcus is appropriate for root dew-extraction. Achieve alternate orientation in the second fertilization. Fertilizer must be in harmony with the soil so as not to cause fertilizer damage. The amount of fertilization should be based on tree vigor to see the tree fertilization, weak trees and more facilities, Wang tree less or not.

At the same time, in the pre-flowering, young fruit, fruit infestation period, spraying strong fruit tingling liquid to increase the coarse fruit pedicle, improve the amount of nutrient delivery, prevent falling, fruit drop, cracked fruit, stale fruit, malformed fruit, so that the fruit color beautiful, fruit Type beauty, good taste. Buds exposed white and two-thirds of the time spent outside the roots of the boron spray, can be used to spray 3 borax fertilizer, while ensuring flower quality and increase the rate of fruit set.

Pest Control

On the basis of winter defense, after the spring, attention should be paid to the control of diseases such as brown spot and anthracnose. Chlorothalonil 1500 times liquid + new high fat film 600-800 times liquid can be used. In the prevention and control of insect pests, attention should be paid to the prevention and control of insect pests such as flower buds, flower thrips, scale insects, red-yellow spiders, and roundworms. The main drugs include: 1,000-1500-fold solution of Loxan and 3000-5000 times imidacloprid. Ling 1500? 2000 times liquid, dichlorvos 800? 1500 times liquid, Rotenone 2000 times liquid.

Note: The spray should be evenly sprayed on the leaves and leaves. Drugs should be used interchangeably to avoid drug resistance. It is forbidden to use highly toxic pesticides to avoid pesticide residues.

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