Acacia is a mimosa material, albizzia genus. In recent years, silver vines and green vines have attracted more attention. Silver Fairy also known as the Christmas tree, Australian white acacia. Evergreen trees, silver-green leaves, dark yellow flowers. Flowering January-April, fruiting period May-June. Green Trafalgar also known as Australia, Acacia leaves, evergreen trees, light green leaves, flowers yellowish white, flowering January-April, fruiting period in late May. All are fast-growing trees. Sowing and nursery cultivation techniques are as follows.
(1) sowing. Spring broadcast 3-4 months, autumn broadcast in late September to mid-October. Acacia seed is solid, and the seed coat has thick wax. Therefore, before sowing, it is soaked with hot water at 60-80°C. It is naturally cooled for a period of time. It is changed once a day. The third day is taken out and mixed with wet sand to accumulate warmth. , Covering the straw, sowing after 7 days of moisturizing, after 3-5 days to emerge.
(2) nursery. Nursery methods include nutritious nursery and nursery nursery. Nutritional nursery: There are two commonly used nutrient soils, one is 60-70% of coke ash, 20-30% of garden soil, 9.5% of garbage or bar fertilizer, 0.5% of calcium magnesium phosphate fertilizer, evenly mixed. The other is fertile topsoil 90%, ash 7%, bone powder 1%, decomposed animal fat 2%, chopped and mix well. Two to three seeds per cup were treated by germination. After the seeds were sown, they were covered with 1 cm of dust or fine soil, and some pine needles were sprinkled with conditions. Put the sown nutrition cups into a width of 1 meter, with an indefinite length and the height of the soil and cup around them in order to maintain moisture. About 12,000 rows per acre. One week after sowing, germination emerged. Nursery to raise seedlings: nursery to choose leeward sunny, deep sandy soil or loam soil, row irrigation convenient place. Loosen the soil, smash the clods, and make a one-meter-wide seedbed with a width of 1 meter. Before sowing, the manure was first used to compost human excrement and calcium magnesium phosphate fertilizer, and then covered with a layer of fine garden soil. Wide-spreading or sowing is used. After sowing, a layer of about 0.5 cm thick fine marly ash is covered. Then, the straw is covered and moistened with water to keep the soil moist. With the amount of seedlings to be transplanted, the transplanted seedlings are planted in 3-4 kg. Do not move seedlings of 2 - 2.5 kg. Within 7 days after sowing, it is necessary to spray 1 to 2 times of water on sunny days to keep the seedbed moist. After the seedlings were unearthed, the cover was gradually removed. After the first true leaf was widely removed, the cover was removed and the weeds were removed.
(3) Management. After the emergence of Acacia, the seedlings are 3-5cm high and sparsely cooked human excrement or chemical fertilizer once to promote seedling growth. Seedling height 15 cm
To transplant seedlings above, select cloudy or rainy days to transplant the seedlings, cut off some of the branches and leaves properly, and plant them in rows of 1030 cm in rows. After the transplant, in the event of a sunny day, watering and sun-shading are necessary to facilitate the survival of the seedlings. Acacia seedling transplant is suitable for spring, requiring digging, planting, and pouring. Since the main stem of Acacia seedlings is delicate, careful attention should be paid when transplanting and care should be taken to protect the root system. After the planting, it must be watered in a timely manner, and poured in a timely manner. At the end of the fall, apply basal fertilizer to facilitate growth and flourishing foliage in the coming year. The trunk of Acacia seedlings is often lopsided due to low branching. In order to increase the ornamental value, the trunk is straightened with appropriate branching points. The nursery can be planted closely and the side branches can be trimmed. For acacia seedlings with weak annual seedlings or slanting trunks, when sprouting in the spring of early spring, leave one strong bud and chop it dry to make it grow into a stout and straight trunk.
In order to prevent the damage of soil bacteria to seeds and seedlings and to ensure the healthy growth of seedlings, appropriate pesticides, fungicides and trace fertilizers and ferrous sulfate can be added to disinfect the soil, adjust the acid, etc. in the preparation of nutritious soil and nursery beds. deal with.
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