Orange tree planting conditions, temperature, climate and regional geographical requirements
Planting orange trees requires sufficient sunlight, and the general temperature is above 8℃, preferably between 20-32℃. The air in the planting environment is humid, and it is best to keep the air humidity between 65-90. The best time to plant orange trees is March and April and September and October because the temperatures during these periods are the most suitable.
Introduction to the orange tree
Oranges are the fruit of the orange tree of the family Rutaceae, also known as yellow fruit, tangerine, golden ring, and willow ding. Orange trees are small trees. The fruit can be peeled and eaten fresh, and the pulp can be used as a seasoning or add-on to other foods. Oranges are mainly divided into several varieties: sweet oranges, navel oranges, blood oranges, rock sugar oranges, and red oranges.
What conditions are needed for orange tree planting?
Orange tree planting requires sufficient sunlight, and the general temperature is above 8℃, preferably between 20-32℃. The air in the planting environment is humid, and it is best to keep the air humidity between 65-90. In addition, it needs sufficient fertilizer and water, deep soil, and can be irrigated in droughts and drained in floods. With these conditions, it can grow well.
Orange tree planting climate and temperature
The biggest impact is temperature. Even a difference of 0.5°C in temperature can sometimes produce completely different results. The growth and development of orange fruit requires a temperature of 12.5-37°C. Flower bud differentiation in autumn requires day and night temperatures of about 20°C and 10°C respectively, and the soil temperature for root growth is roughly the same as that of the aboveground part.
Excessively low temperature will freeze the orange fruit. Sweet oranges will freeze at -4℃. Wenzhou satsuma mandarins will freeze branches and leaves at -5℃. Sweet oranges will freeze when -5℃ and below. Wenzhou satsuma mandarins will freeze when -6℃. Frostbite on large branches and trunks, below -6.5℃ for sweet oranges and below -9℃ for Wenzhou mandarins will cause the plants to freeze to death.
Geographical areas suitable for orange tree planting
Oranges are mainly distributed in the area south of 35 degrees north latitude. They like to be warm and humid. Areas with large water bodies for warming can be pushed north to northern latitudes. 45. There are 135 countries in the world that produce oranges, with an annual output of 102.822 million tons and an area of 107.3 million acres, ranking first among all fruits. Brazil ranks first in production with 24.2526 million tons, followed by the United States with 16.3352 million tons and China. Third, there are 10.78 million tons.
Orange tree planting time
The best time to plant orange trees is March and April and September and October, because the temperature during these periods is most suitable.
Orange tree planting benefits
Generally, navel oranges will bear fruit after 3 years of planting, but the yield is not very high. Generally, the yield of adult fruit trees over four years old can reach 2500-3000 per mu. Kilogram, the life span of navel orange fruit trees can reach 40-50 years, and the economic benefits are still very good.
The current market wholesale price of navel oranges is 2.5 yuan/jin. If the output is 2,500 kilograms/mu, 100 acres of navel oranges can earn 1.25 million yuan in income. However, planting navel oranges is not profitable in the first two years. Starting from about the fourth year, excluding the cost of manual picking, you can get good profits.
Orange tree planting methods and technical points
Garden management mainly involves fertilizer and water management. Orange trees need to be fertilized five or six times in the first few years, usually in spring, summer and Fertilize in the autumn, and the fertilizers are mainly urea and compound fertilizer. Fertilization in the spring is to promote the growth of branches and leaves, and in the summer to promote fruit growth. At the same time, the amount of water must be controlled during this period. If the orange trees in the garden grow too luxuriantly, the branches and leaves must be pruned to ensure sufficient light and permeability.
In the later stage, deep plowing and hole expansion and soil maturation should be carried out. It is forbidden to plant tall plants such as corn and wheat in the garden, and reasonable intercropping, cultivating and weeding in the orchard should be carried out. Around flowering (March-May) and autumn (September-November) are the key periods for preventing and controlling red spider mites: before flowering, insect population density reaches 1-2 heads/leaf, and after flowering and autumn when the density reaches 5-6 heads/leaf, it is necessary to control spider mites. Prevention and treatment.
The spring shoot sprouting stage, young fruit stage and fruit enlarging stage are the main periods for the prevention and control of rust flies: rust color appears on the back of the spring shoot leaves of the current year; the insect population density on the leaves or fruits reaches 2-3 per leaf. Immediate prevention and treatment of headaches.
Commonly used pharmaceuticals include fenacetate, fenacetate, acetifen, bromofenacet, fenacetate, etc. Pay attention to protect natural enemies such as long-bearded mites, blunt mites and lacewings.