Ecological Habits of Albizia Julibrissin
Born on a hillside or cultivated. Albizia enjoys a warm, humid and sunny environment, and is highly adaptable to climate and soil. It is suitable for growth in well-drained and fertile soil, but it is also resistant to poor soil and arid climate, but not tolerant to waterlogging.
Growth is rapid. Sex likes light, likes warmth, cold-tolerant, drought-tolerant, soil barren and mild salt-alkali, and has strong resistance to harmful gases such as sulfur dioxide and hydrogen chloride.
Main producing area of Albizia Julibrissin
It is native to southern America, and is also distributed throughout the Yellow River Basin to the Pearl River Basin in my country. Distributed in East China, South China, Southwest and 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 the Americas.
Albizia morphological characteristics
Albizia julibrissin, a deciduous tree, can reach up to 16m in height. The trunk is gray-black; the tender branches, inflorescences and leaf rachis 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 lobules, linear to oblong, 6-12mm long, 1-4mm wide, slanted upward, with small pointed tips at the apex, with margins Hair, sometimes pubescent on the lower side or only on the midrib; the midrib is close to the upper edge.
The flower head is arranged in a large conical inflorescence at the top of the branch; the flower is 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 ribbon-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 Use
The albizia tree canopy is broad, the leaves are slender like feathers, and the flowers are bright red. They are beautiful shade trees and street trees. They are suitable for planting in front of houses, lawns and forest edges. Strong resistance to toxic gases, it can be used as landscape trees, street trees, landscape trees, waterfront green trees, factory green trees and ecological protection trees, etc.
Albizia management and maintenance
Sowing and breeding
Albizia julibrissin is often reproduced by sowing. Seeds are collected from September to October. When picking seeds, select pods with full grains and free of diseases and insect pests, dry them and thresh them, 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 10 days. 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
In March-April of the following year, the seeds can be planted 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 then rinse with clean water and soak the seeds in hot water at about 80℃. 30s (the longest can not 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.