ã€Profile】 Jasmine, also known as jasmine, is a genus of rosaceae in the family Oleaceae. Jasmine green leaves, white flowers, rich aroma, is the most common aromatic potted plants. Jasmine is native to India and Arabia. The central production area is near the Persian Gulf and is now widely planted in subtropical areas. Mainly distributed in Iran, Egypt, Turkey, Morocco, Algeria, Tunisia, and Spain, France, Italy and other Mediterranean coastal countries, India and Southeast Asian countries have cultivated. The Greek capital Athens is called Jasmine City. The Philippines, Indonesia, Pakistan, Paraguay, Tunisia and Thailand included jasmine and their sisters Mao Jamei and Dahua Jasmine as national flowers. The state of South Carolina in the United States is state flower. During the flowering season, the white jasmine sea can be seen everywhere in the Philippines, and the entire Philippines is radiating a strong floral fragrance. The history of the introduction of jasmine into our country is relatively long. The Song Dynasty poet Wang Shipeng once wrote: “The Jasmine flower is also a good flower. It is far from the country of Buddhism to China.†In the Song Dynasty, “Yanguang Jasmine said,†it reads: Please be fragrant and jasmine as the crown of flowers." Explain the status of Jasmine in flowers. China's Rongli was first cultivated in the Yunnan area and later expanded to Guangdong and Fujian, becoming the birthplace of China's jasmine. So far, jasmine has spread all over the country, Guangdong, Fujian, Suzhou, Hangzhou, Nanjing and other places have become the main producing areas. In recent years, Shandong, Beijing, Tianjin, and Xi'an have also actively developed potted jasmine production. At present, the cultivated area of ​​jasmine in China accounts for 65% of the total cultivated area in the world, and the annual output of flowers ranks first in the world. Morphological characteristics and varieties Jasmine is an evergreen shrub. Leaves opposite, bright, oval. Cymes, several clusters born at the tip of branches, pedicels villous, white flowers with aroma, single, double and multiple types. The common genus of ornamental species is J.beesianum, which is purple or red and very fragrant. J. grandiflorum, flower white, with aroma. J. humile, bright yellow flowers. J.mesnyi, Yunnan, light yellow, half-heavy or double, with aroma. J. mulfiflorum, yellow flowers. J.nitidum, white flowers, lavender leaves, very fragrant. J.officinale, flower white, red dyed, aromatic. Dwarf jasmine (J.parkeri), small flowers, yellow. J. polyanthum is white and very fragrant. Biological characteristics Jasmine is native to India, Iran, Pakistan, and Arab countries. Warm, moist and sunny environment. Jasmine is more sensitive to temperature, can adapt to high temperatures, is not resistant to low temperatures, poor cold resistance. When the temperature is 0°C, the delicate part of the leaves and shoots wither, and most of the shoots wither and die. Jasmine growth temperature is 25 ~ 35 °C. The growth is very slow below 10°C and even stops growing. About 19 °C can sprout. Slow growth below 25°C and buds above 25°C. Flower buds developed well at 30-40 °C, and 32-37 °C was the optimum temperature for bud opening and opening. Although the flowers can be opened at more than 37°C, the phenomenon of boring yellow often occurs and the aroma is poor. Jasmine moisture requirements are: the growing season, lush foliage, large transpiration, to fully watering, air relative humidity of 75% to 85%. In the case of severe water shortage in the dry season, it will affect growth and sprouting, and flowers will not bloom, and flower shape will be small. However, too much soil moisture can lead to poor root development and rot and suffocation. Potted jasmine, especially if it is too wet in winter, can easily cause rot. Jasmine is a kind of long-day sunshine plant. Under the irradiation of direct light, it is most suitable for the growth and development of jasmine. If the light is insufficient or shaded, the jasmine leaves become large and thin, the leaves are light green, and the growth and development are poor. The stronger the light, the more developed the root system of jasmine, the more robust the plant growth and the stronger the resistance. The wind has a certain influence on the growth and development of jasmine, with more southeast wind in summer, with a lot of water vapor, so that the air humidity increases, and jasmine grows vigorously. The westerlies or the northwesterly winds cause the air humidity and temperature to drop, the development of flower buds is inhibited, the flowers are often insufficiently opened, and some flowers turn purple. During the hot summer months, the north wind blows jasmine and promotes white and fragrant flowers. When the southerly wind or easterly wind blows, large amounts of evaporation can cause water loss and defoliation and affect growth. For soil requirements, loose, fertile sandy loam, the most suitable for 6-6.5. Potted soil can be mixed with garden soil and alfalfa ash or garden soil and vermiculite, humus soil. [Propagation method] Commonly used cuttings, layering and breeding. Cutting propagation: From April to October, select mature 1-year-old branches, cut and grow 10 centimeters, remove the lower leaves, with a pair of complete leaves at the top, insert the same amount of mud, sand, plug the plastic film, keep the air high Humidity was healed after about 20 days of insertion, and then tender roots were produced. Apical buds sprouted at the top of the cuttings and internodes, and the cuttings grew into normal growth after about 50 days. The cuttings are rooted in the summer with the quickest rooting, and the survival rate is also high. The base of the cuttings is immersed for 3 to 5 seconds with a 0.05% indole butyric acid solution. The treated cuttings are generally rooted for 15 to 20 days. The survival rate is above 90%, and the shoots are started at about 25 days. After growing into new plants, it enters normal management. Batten propagation: Select a longer shoot at 15 cm, preferably in the lower part of the section, and bury it in a pot filled with sand and mud to keep it moist. After 2 to 3 weeks, start rooting. About 2 months later Cut off the seedlings from the mother plant. Breeding: Each spring, combined with the change basin, the twigs dense jasmine split open potted, respectively, when the ramets properly pruned the roots and shoots. [Cultivation and Management] potted jasmine commonly used 15 to 20 cm pots. Jasmine hi light, fertilizer, potted plants must be placed in a sunny place, Hua Yang often said "sunny jasmine" is the truth. Otherwise, the sun is not enough, and it is prone to leggy. The jasmine twigs have a strong germination force. After the spring douche, they often take care of the heart. After the flowering period, it is necessary to re-cut and renew, in order to facilitate the emergence of a new branch, and the flowering is large and prosperous. Hua Tuo said: "Jasmine is not pruned, the branch is weak and obvious", "pruning tips, flowers will be stable." During the growing season, fertilize one time every half month or use "Fengyou" 21-7-7 acid fertilizer. Jasmine is very fat-tolerant, such as nitrogen deficiency, easily causing yellow leaves. In the early stage of jasmine buds, spraying with 0.2% to 0.3% urea in the evening spray has a good effect on promoting bud development. [Pest and pest control] Common white peony disease, brown spot hazard, sprayed with 65% zein zinc WP 800 times. Insect pests are harmed by leaf roller moths, red spiders, and scale insects. They can be sprayed by using 50% of the 1,000 times of the killing of pine nut oil. ã€Post-harvest treatment】Jasmine has the charm of color, fragrance, posture and rhyme. Potted plants can be used to decorate gardens and living rooms. If they are planted, they are more poetic and picturesque. Jasmine also produces corsages, flower balls, and lanterns in the south of the city. Roller Hook Tomato Plant Support Roller Hook Tomato Plant Support,Tomato Trellis-trellising,Greenhouse Tomato Plant,Accessory Trellising Roller Hook JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , http://www.spgreenhouse.com