How to correctly transport and maintain citrus seedlings

Citrus has always been a popular fruit with rich nutritional value, but more efforts are needed to make citrus trees produce fruitful oranges.

Transportation and treatment of citrus seedlings

1. Different from deciduous fruit trees, citrus trees have no obvious dormancy period, so special attention should be paid to the protection of trees in seedling transportation. Usually transplant with soil. However, in international transportation, bare root seedlings are generally transported because of the quarantine requirements and transportation costs of various countries.

two。 The grafted seedlings are usually 55cm and are transported in drums with metal at the bottom and top. The barrel is 74cm high and 37cm in diameter. Each barrel contains 50 seedlings, the roots are wrapped in wet peat moss, and there is a layer of plastic outside the bucket for moisturizing. The packed barrel has about 22.5kg.

3. Pick fully mature branches and use scissors to cut off the leaves and the unfilled buds at the end of the branches. Soak the branches in disinfectant (10% sodium hypochlorite) for 3 to 5 minutes, then wash them with clean water for 1 or 2 times. The branches are spread evenly and dry until there is no floating water on the surface. Fifty branches are in a small bundle, sealed in a plastic bag and sealed with a layer of plastic bag on the outside. Many bundles of branches are packed into a carton. This method can be transported at room temperature for a month. It is best to be transported under the condition of 5-15 ℃.

Second, the correct method of raising citrus seedlings

1. Because citrus container seedlings are equipped with a certain formula of humus nutrient soil, the roots of the seedlings are well developed, and the survival rate can reach 100% after planting, and there is no phenomenon of returning seedlings after planting, which can hang fruit 2 or 3 years earlier, which is welcomed by fruit farmers.

two。 Materials. ⑴ equipment: nutrition bowl is 10 meters long, 10 meters wide and 33 meters high; nutrition bag is 17 meters wide and 28 meters high. ⑵ nutrient soil formula: humus peat 50%, river sand 25%, bran shell 25%.

3. The seedling land is leveled, the trench drainage is good, the width of the box is 50-60 meters, and the length depends on the topography. After leveling the side of the box, put 3-4 containers on it, pile around and surround it with wire to fix the container and prevent it from skewing or even tipping. The depth and width of the trench between the compartment and the compartment is about 20 meters each.

4. When the rootstock has 3-6 true leaves, the rootstock should be planted in a container, the main root must be erect, the fibrous root should be evenly distributed, and the fixed root should be watered thoroughly after planting. Rootstocks can be planted in spring, summer and autumn. The main kinds of rootstocks are orange rootstock and fragrant orange rootstock.

III. Control methods of red spider pests in citrus seedlings

Strengthen the management of water and fertilizer, plant cover plants, change the microclimate and biological composition, so that there is no interest but benefit.

Protect and utilize natural predators. Red spiders and yellow spiders have many natural enemies, such as six-point thrips, predatory insects such as wax, and pathogenic fungi such as budding molds. In the orchard, the selection of smelly grass, forage grass and other non-malignant weeds as biological cover of the orchard can adjust the orchard microclimate and provide sufficient food for the natural enemies of pests, which is beneficial to the activities of the natural enemies.

For chemical control in the period of damage. Spray control, such as 24% hidden danger 5000 times liquid, or 20% sweeping snail net 2000 times 3000 times, or 73% grams wax 2000 times 3000 times liquid and so on. When spraying, it is necessary to spray evenly, so that the back of the leaf, the leaf surface, the inner chamber and the branches are sprayed and killed together. In addition, you can also choose 10 times Uranus EC 6000 times, 73% grams wax special EC 2000 times, 30% Moxiling wettable powder 2000 times, 15% sweeping worm cleaning EC 3000 times. The citrus was sprayed with 1-2 Baumedo stone sulfur mixture or 45% crystal stone sulfur mixture 20 times in winter.

The famous function of citrus should be its edible value, but the dwarfed citrus seedlings can also be moved into the house for pot culture, so it is also a very popular flower and fruit plant.