The ecological habits of Albizia: Born on hillside or cultivated. Albizia enjoys a warm, humid and sunny environment, and is highly adaptable to climate and soil. It is suitable to grow in well-drained and fertile soil, but it is also resistant to barren soil and arid climate, but not waterlogging.
Growth is rapid. Sex likes light, likes warmth, cold-tolerant, drought-tolerant, tolerant to poor soil and mild salt-alkali, and has strong resistance to harmful gases such as sulfur dioxide and hydrogen chloride.
The main producing areas of Albizia Julibrissin are native to southern America, and are also distributed throughout the Yellow River Basin to the Pearl River Basin in my country. Distributed in East China, South China, Southwest, Liaoning, Hebei, Henan, Shaanxi and other provinces. North Korea, Japan, Vietnam, Thailand, Myanmar, India, Iran and eastern Africa are also distributed. It is distributed in Africa, Central Asia and East Asia; it is also cultivated in America.
Albizia morphological characteristics: Albizia julibrissin, deciduous tree, up to 16m high. The trunk is gray-black; the tender branches, inflorescences and leaf shafts are downy or pubescent.
The stipules are linear-lanceolate, smaller leaves are small, early fall; two pinnately compound leaves, alternate; total petiole length 3-5cm, the total flower stalk is near the base and the top 1 pair of pinnaes each have one Gland; 4-12 pairs of pinna, sometimes up to 20 pairs cultivated; 10-30 pairs of leaflets, linear to oblong, 6-12mm long, 1-4mm wide, slanted upward, with small pointed tips at the apex, with margins Hair, sometimes pubescent below or only on the midrib; the midrib is close to the upper edge.
The flower heads are arranged in large conical inflorescences at the top of the branches; the flowers are pink; the calyx is tubular, 3mm long; the corolla is 8mm long, the lobes are triangular, and the length is 1.5mm. Slender; ovary upper, style almost as long as filament, stigma cylindrical.
The pods are band-shaped, 9-15cm long and 1.5-2.5cm wide, tender pods are pilose, and old pods are glabrous. Flowering period from June to July; fruiting period from August to October.
Albizia Garden Purpose: Albizia has an open crown, slender leaves like feathers, and bright red flowers. It is a beautiful shade tree and street tree. It is suitable for planting in front of houses, lawns and forest edges. It has strong resistance to toxic gases and can be used as garden trees, street trees, landscape trees, waterfront green trees, factory green trees and ecological protection trees.
Albizia Julibrissin management and maintenance: Albizia Julibrissin is often used for sowing and breeding. Seeds are collected from September to October. When collecting seeds, you should choose pods with full grains and no diseases and insect pests, and thresh them in the sun, and store them in a dry and ventilated place to prevent mold.
Seedlings are grown in spring, soak the seeds for 8-10h before sowing, and then take them out for sowing. Ditch and drill, ditch distance 60cm, cover soil 2-3cm, keep the border soil moist after sowing, and germinate about 10d. The seed amount for 1h㎡ is about 150kg. After the seedlings emerge, the management work such as weeding, soil loosening and top dressing should be strengthened. Transplant in spring or autumn in the second year, with a plant spacing of 3-5m. For 2-3 years after transplanting, weed the pine nests every spring and autumn to promote growth.
Seed treatment: From March to April of the following year, the seeds can be sown after treatment. Because the seed coat of Albizia julibrissin is hard, in order to make the seeds germinate neatly and unearth quickly, it needs to be soaked in 0.5% potassium permanganate cold aqueous solution for 2 hours 2 weeks before sowing, and rinse with clean water after removal and soak the seeds in hot water at about 80℃ 30s (the longest cannot exceed 1min, otherwise it will affect the germination rate), sowing can be carried out after 24h. Using this method, the germination rate can reach 80%-90%, and the growth after emergence is strong and not easy to get sick.