Write a joke about the growth of oranges.

The orange tree does not shed leaves, and it is dark green all year round. The whole orange tree is beautiful.

Oranges bloom in spring with white flowers, usually five petals, yellow stamens, slightly slender petals and fragrant flowers. When the orange blossoms are in full bloom in spring, the dark green leaves are full of white flowers, and the air is filled with pleasant fragrance, accompanied by the gradually warming spring breeze ... I can only say that it is beautiful.

When all the orange blossoms are finished, small oranges begin to grow. In summer, the trees are covered with small green fruits (the same color as the leaves).

Needless to say, autumn is certainly a mature season. The dark green leaves are covered with golden fruits, which is very comfortable and rewarding. ...

Of course, there is no fruit in winter. When it snows, snow covers the leaves. Because the leaves don't fall off, if it snows heavily, the branches will often be crushed. However, it doesn't often snow heavily in winter in the south. I remember one winter, a big branch of the grapefruit tree in our yard was crushed.

The growth process of citrus goes through six stages: seedling stage, growth stage, flowering stage, fruit dropping stage, fruit expansion stage and maturity stage. Citrus grafted seedlings begin to bear fruit in 3-4 years after planting, reach the full fruit stage in 5 years, and the economic life is as long as 40-50 years. However, in recent years, dwarf and close planting technology has been adopted in various places, which can bear fruit early and enter the full fruit stage in advance, but its economic life is shortened accordingly. Citrus can sprout 3-4 times a year, including spring shoots, summer shoots, autumn shoots and winter shoots. Spring shoots germinate in March and April, with regular buds, moderate length, 10-20cm, short internodes, rich tissues, round branches, small and long leaves, sharp and dark green leaves. Full-grown spring seedlings can generally become the alma mater with excellent results in the following year. June-July is the sprouting stage of summer shoots, with irregular growth, generally 30-60 cm long, thick branches, long internodes, triangular cross-section, sometimes prickly, wide oval leaves, blunt apex and wavy serrations at the leaf edge. Young trees have more summer shoots, which can be cultivated into good backbone schools to expand the crown. There is a certain contradiction between the appearance of summer shoots of adult trees and the growth of fruits. Due to the inhibition of fruit growth on summer shoots, the number of summer shoots is generally small. If a large number of students are pumped, they will often compete with the fruits for fertilizer and water, which will aggravate the "fruit drop in June". If summer bamboo shoots can be picked, or in areas where the autumn temperature is low and autumn bamboo shoots are underdeveloped, summer bamboo shoots can also become the mother technology in the next year. Autumn bamboo shoots germinate in August-September, and the number is more, second only to spring bamboo shoots. Autumn shoots are generally about 20-40 cm long, slightly stout and triangular in cross section. The leaves are bigger than the buds in spring. Longer and narrower than the summer tip, in between. Generally, it can become the fruiting mother branch of the following year. The flower buds of citrus are all mixed buds except pure flower buds. Generally, mixed buds are differentiated from the fruit after harvest to the next spring before germination (mainly from June 5438 to February-March). Kumquat shoots and blooms many times a year, and it differentiates every time it stops growing. The mixed buds are planted on several nodes near the top of the fruiting mother branch. After germination, the fruiting branches are pulled out and blossom and bear fruit at the top of the fruiting branches. During the development of citrus fruit, there are two obvious peaks of falling flowers and fruits. For the first time, within a few days to two weeks after the flower withered, it fell off with the fruit stalk, commonly known as "falling flower" The main reason is poor fertilization and lack of growth hormone for pollen transmission. The second time was in June, a month after the flowers withered, also called "June fruit drop". The main reasons are insufficient nutrition and lack or imbalance of endogenous hormones; Too much water or drought can also lead to fruit drop in June. This fruit drop has a great influence on yield.