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Bitter flower is the first flower, huddled up. Flowers are slender and curved, 0.7~25px long, yellow-brown to yellow-brown, with short stalks. Calyx tubular, with 5 small teeth at apex; Carola? The tube is about twice as long as the calyx tube, with 5 cracks at the top and lanceolate lobes; Stamens are numerous, filaments are slender, yellow-brown to yellow-brown, the lower part is United, the upper part is separated, and the corolla tube is extended. The smell is slightly fragrant and the taste is light. ? Neem flower, also known as velvet tree flower, acacia flower and cordate telosma flower, is named cordate telosma because it blooms during the day and closes at night. In July, a tree with green leaves and red flowers swaying in the green brings a little coolness. Approaching her, I feel dizzy with happiness, and my red lips are like a shy girl, but also like the blush of a shy girl. It is really pleasing to the eye and annoying. In ancient times, this acacia flower was called acacia flower, which did not bloom. Bitter love begins with a scholar. The scholar studied hard in loved one for ten years at a cold window, preparing for fame and fortune in Beijing. When he left, his wife pointed to the neem tree in front of the window and said to him, "Honey, you can go to high school here, but you are confused by the flowers in Beijing. Don't forget the way home! " The scholar promised and left. But I haven't heard from you since. Fans are looking forward to it at home, waiting and waiting, their hair is white, and they haven't waited for their husbands. When the end of life came, the pink fan dragged her weak body and struggled to the bitter tree that confirmed her and her husband's vows. She swore with her life: "If my husband changes his mind, from now on, let this bitterness blossom. My husband is a leaf, I am a flower, and the flowers are not old, and the leaves don't fall. Life is a union, and life is acacia!" Then he swallowed his last breath. The next year, all the bitter trees really blossomed, soft and pink, like handfuls of small fans hanging on the branches, with a faint fragrance, but the flowering period was very short, only one day. Moreover, since then, all the leaves have actually come together in the morning and evening with the flowers blooming. In order to commemorate the infatuation of fans, people renamed the bitter flower acacia flower. Seeds were collected in June 5438+ 10, and planted in the following spring. 1 ~ 2 years later, when the trunk of young trees is more than 2 meters high, it can be fixed for pruning (4 pieces). Choose three lateral branches scattered up and down as the main branches and use them to expand the crown. In winter, three main branches are cut short, and several lateral branches are cultivated on each main branch, which are scattered and occupy a certain space. When the crown extends too far and the lower part is bald, it should be retracted in time to change the head and cut off the dead branches. He likes light, is not tolerant of shade, has low requirements on soil, and is tolerant of drought, barren, cold and waterlogging. If conditions permit, it is appropriate to plant Albizia Albizia in slightly acidic loam with deep soil layer. It can also grow well in poor soil. Albizia Albizia has rhizobia, which can improve the soil. Albizia Albizia is a shallow-rooted plant, which has weak germination ability and is not resistant to pruning. Albizia Albizia has beautiful posture, elegant leaves, bright colors and fragrant smell, which can not only beautify the courtyard, but also carry out earthquake observation and research, killing two birds with one stone. Transplanting Albizia Albizia seedlings should be transplanted before germination in spring, requiring "digging, planting and watering". Be careful when transplanting, pay attention to protecting the root system, and pay attention to setting up brackets for large seedlings to prevent them from being blown down or tilted by the wind. Should choose open terrain, good drainage, sunny place to plant. Usually, the pit is dug according to the plant spacing of 3 meters and row spacing of 3 meters, with a diameter of 80 cm and a depth of 80 cm. Put a three-year-old seedling and a bitter flower (2 flowers) in each hole? Straighten it first, let the roots stretch, then fill it and step on it. Colonial action is best carried out at night. After planting, light organic fertilizer can be applied with water, or the mixed solution of 0.2%~0.3% urea and potassium dihydrogen phosphate can be sprayed on the leaves. If the soil quality is not good, it can be replaced by foreign soil, and the bottom fertilizer can be applied in the hole and mixed well with the bottom soil. Pay attention to watering after planting, keep the soil moist, and water it as appropriate after 3~5 days. After safe recovery, the watering amount can be gradually reduced. But pay attention to supplementary watering in dry season. Fertilization is generally twice a year, and topdressing is once after flowering to supplement the consumed nutrition; The other time is at the end of autumn, applying sufficient base fertilizer to facilitate the growth of roots and the flourishing of flowers in the coming year. Fertilizer and water management is happy with a slightly wet and dry soil environment. Not tolerant to waterlogging, but more tolerant to drought. Watering management should be done well for a period of time after plant planting. As a plant grows, its roots can absorb groundwater. At this time, natural rainfall is basically used. Can ensure the water demand of plants. There is no great demand for fertilizer, except that 5000 grams of manure is applied to each planting hole as the base fertilizer when planting, and other fertilizers are hardly used. Happy and bright, flowers rarely bloom in hidden places. It is best to keep enough sunshine, but avoid strong light, otherwise its bark will crack easily. Strong adaptability to climate, high temperature and cold resistance, and normal wintering at -27℃. Usually, Albizia Albizia doesn't need to take protective measures when it overwinters in the open field in northern China.