About the breeding technique of the fine leafhopper|Reproduction technology picture Daquan
It is one of the most popular local trees in Hong Kong. It can be used for shading and wind protection. It is planted along roadsides or near villages. The leafhopper has an amazing vitality and can grow in any environment and any soil, even attached to the stone or the retaining wall. The leafhopper is salt-tolerant, so it is not difficult to find it on the beach, but on sandy soil, its growth is limited because the loose soil cannot fully support the whole tree.
Discriminating feature
The leafhopper grows slowly, has a broad and dense canopy, and there are countless young cremated gas roots hanging from the branches; when the gas root touches the surface of the earth, a new trunk is formed to support the dense foliage of the whole tree. .
The flowers of the eucalyptus are hidden in the fig and require a unique bee to help spread the pollen. A small female bee that enters the fig from the fig surface, such as a pinhole-sized hole. Then, the drone will hatch in the fig and fertilize the female bee. The female bee that hatches later will stick to the pollen and leave the fig; when it flies to another fig to lay eggs, the pollen can be spread away.
Reproductive technology
Is a perennial evergreen tree of the genus Eucalyptus, which is the most ideal street tree for urban construction in the tropical and subtropical regions. It can not only green and beautify the environment, but also regulate the climate and shade. Due to the strong regenerative ability of the leafhopper, it is easy to cut and survive. At present, the cutting method is used for breeding. However, the shortcoming is that the cost is high, and the coefficient of reproduction is low. The wounds of the branches that have been cut off by the branches are dry, so that the mother trees of the earings form hollow trees and shorten the life. Therefore, in the production, seedling propagation is advocated to cultivate seedlings. The seed propagation techniques of the leafhopper are now described as follows:
1 Seed collection and in May of each year, when the cryptea of ​​the leafhopper turns from green to orange red and begins to fall off naturally, it is the best time for seed collection. After the fruit is recovered, it is kneaded, washed with water, and filtered with gauze. The oil is washed and filtered several times, and the milk and the peel contained in the fruit are washed, and the seeds filtered on the gauze are dried for storage or used for seedling propagation.
2 seedbed finishing
The seeds of the fine leafhopper are small, and it is required that the seedlings must be fine, fine and flat. Select the sandy loam block with flat terrain and deep soil layer, fully plow the clams, use 50% carbendazim to sprinkle it in the soil and sterilize it by 3g/m2, then excavate the 80cm wide ditch and level the bed surface. A layer of 1 to 2 cm thick mountain forest humus was placed on the bed.
3 seedlings
The best period for seedling cultivation is from the end of May to the beginning of June, that is, seeding is carried out after picking the seeds and drying them. It can also be used for sowing in the autumn or the next year from March to April when the temperature rises steadily. When sowing, mix 3 to 5 parts of fine sand with 1 part of seed, spread it evenly on the bed surface, and then gently pour water with a sprayer or a watering can to make the soil moist. Afterwards, water should be properly watered to keep the soil moist.
4 shades and rain
The seedlings that have just grown out are very delicate and delicate, and it is easy to die when exposed to the sun or continuous rain. In order to increase the survival rate of seedlings, the seedbed should be shaded or shaded by a sunshade net. Rainy days should be covered with agricultural film to cover the rain. The height of the canopy is convenient for management.
5 seedling transplant
When the seedlings grow 4 to 6 true leaves and the seedlings are as high as 10 cm, they are transplanted into the nursery according to the row spacing of 10 cm×30 cm. After the greening, the fertilizer and water management is strengthened, and the robust seedlings are cultivated. For bonsai cultivation, it can be planted in pots for cultivation.
6 transplanting and planting
When the seedlings in the nursery are as high as 30cm or more, they can be transplanted into the earthen pots or bamboo rafts containing the fat soil, and they are planted in the well-organized pots or pots according to the large, medium and small seedlings of the seedlings. In the future, the compound fertilizer will be added, and watering should be carried out in an appropriate amount to carry out sapling cultivation of 1 to 2 years. When the young tree grows into a small tree of 1 to 1.5 m in height, it can be planted. After that, it is necessary to shape and trim according to the needs, so that the tree is beautiful and meets the requirements of greening.
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