Planting Technology Lists
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Hydroponic culture of rhododendron
Soilless cultivation is characterized by replacing soil with man-made substrates. The soilless cultivation of rhododendron with solid substrate in Hunan Forestry Institute has achieved very satisfactory results. The variety is summer cuckoo, the crown structure of soilless cultivation is compact, the number of flowering is large, the flower diameter is large, and there are few diseases and insect pests. It not only improves the quality of flowers, but also greatly reduces the heavy physical work, so it is a cultivation method worth popularizing. 1. The root system of rhododendron is very slender, which requires loose matrix to facilitate air permeability and drainage. 1 part of vermiculite,
2019-01-16 -
Cutting Propagation of Rhododendron
Plant reproduction methods have always been divided into sexual and asexual two categories. At present, the mass production of rhododendron mostly uses the cutting method of vegetative reproduction, which is one of the ways to ensure that the offspring are exactly the same as their parents, and it is a commercial way to reproduce the so-called clones that are the same as each other. First, the breeding object: roughly speaking, the largest species of leaves should be added to the bottom temperature when cutting and the air humidity should be large. A closed cutter was used at the end of June, and the branches should be fully mature and about two-year-old branches would be suitable for use. The short alpine rhododendron creeping on the high mountain will be harvested in autumn when breeding.
2019-01-16 -
Pruning of azaleas
The best time to prune azaleas is after the flowers are withered. The reason is that azaleas blossom first and then grow leaves, it has consumed a lot of nutrients when it blossoms, and new branches grow new leaves after blooming, and it needs to consume a lot of nutrients. At this time, it is often due to insufficient nutrition supply, resulting in not many branches, weakening growth. Pruning after anthesis greatly reduces the consumption of plant nutrition, so that it can rest and recuperate for a period of time and accumulate nutrients to facilitate vigorous branching in the future. In addition, the growth of the plant has the apical advantage, and when the branch top is cut off, it loses the apical advantage.
2019-01-16 -
Processing and utilization technology of rhododendron
First, harvest and process flowers at the end of spring, leaves in summer, roots in autumn and winter, fresh or dried. Second, the use of landscaping: azaleas have high ornamental value, showing beautiful and dignified tree shape and poise throughout the year, not only beautiful flowers, but also display the leaf color of the whole plant for a long time, and the shape changes with the season. Xizang thin-leaf rhododendron and Yunnan scale rhododendron have a layer of ice-blue fruit cream on their leaves, which is very spectacular. Yunnan leathery rhododendron having new or shiny yellowish-brown leaves on its silver-gray tender stems in spring
2019-01-16 -
Brown spot of rhododendron
Brown spot is a common leaf spot disease of rhododendron. Occurrence is more common all over the country, especially in Guangzhou, Suzhou, Nanjing, Lianyungang, Wuhan, Hefei, Shenyang and other places. The disease not only harms rhododendron, but also harms other plants of rhododendron. Symptoms: Brown spot mainly occurs in leaves. At first the leaves produce reddish-brown dots. Then it gradually expanded into a nearly round or polygonal spot due to the limitation of leaf veins. The plaque is 2mm in diameter and dark brown. In the later stage, the center of the plaque changes from yellowish white to grayish white, and the edge is dark brown (varies from variety to variety).
2019-01-16 -
The crown net bug of rhododendron
Also known as pear net bug, pear net bug, flower belongs to Hemiptera, Pentatomidae. All over the country. With nymphs, adults harm rhododendron, rose, camellia, Michelia, jasmine, wax plum, wisteria and other potted flowers and trees. For the harmful adults and nymphs are clustered on the back of the leaves to suck juice, and the back of the injured leaves looks like a black sticky substance that has been splashed. This feature can be easily distinguished from other piercing pests. The whole injured leaf is yellowish yellow on the back, and many pale spots are formed on the front. When the damage is serious, the spots become patches, and even the whole leaf is chlorotic.
2019-01-16 -
Comprehensive control measures for common diseases of rhododendron
The main diseases of rhododendron are root rot, brown spot, black spot, leaf blight, iron deficiency chlorosis and so on. After the rhododendron suffered from root rot, the growth was weak, the leaves wilted and withered, the surface of the root system appeared water-stained brown fields, serious soft rot, gradually rotted and peeled, and the xylem blackened. The disease is most likely to occur in an environment with high temperature and high humidity. The prevention and cure method is to strictly disinfect the cultivated soil before turning the basin, and keep the soil loose and moist, make it have good permeability and avoid stagnant water. If the plant is found to be sick, the diseased plant and basin soil should be dealt with in time. Treatment
2019-01-16 -
Control measures of common diseases of rhododendron
The common diseases and control measures of rhododendron can be classified into the following categories: 1. Symptoms of Botrytis cinerea the disease occurs in the leaves and flowers of rhododendrons. Freezing injury is often the cause of leaf disease. In spring, cuckoos cultivated indoors and outdoors are often infected with Botrytis cinerea. In the early stage of the disease, necrotic spots appeared on the petals, expanded rapidly, and connected to each other to form large disease spots. Under the condition of high humidity, the disease produces a large number of gray conidium, hence the name Botrytis cinerea. Pathogenic Botrytis cinerea [Botrytisci]
2019-01-16 -
The difference between "five Treasure Pearl" and "five Treasure Green Pearl" of Rhododendron
Tongqing Comrade Wubaozhu is a valuable variety of western cuckoo, flowering in August, the flower is large double petal, outer wheel large petal is a micro-embryonic form, flower expansion shape, complex color, red, white, pink and other colors. Its main bud varieties are Fanwubao, Fantianhui, jubilant and so on. If the plant growth is robust, when the flower blooms to the later stage, the flower heart is prominent, also known as the drum head five treasures. The general growth law is that the flowers and leaves are paralleled, the leaves are ovate, the leaves are thick and shiny, the veins are obvious, the branches and leaves are sparse, and the branches are stout. Wubao Green Pearl belongs to the summer cuckoo variety, also known as Chinese rhododendron, is me.
2019-01-16 -
Cultivation and Management of Rhododendron in Belgium
Belgian rhododendron, also known as western rhododendron. It has a large number of flowers, long flowering period and fast growth. It is a kind of precious flower introduced from Holland and Belgium in recent years. Belongs to the rhododendron family, evergreen shrub. 1. Flower habits: Belgian rhododendron is an acidic flower with well-developed and small fibrous roots. when planting, it is appropriate to choose loose and permeable soil, and humus soil under the forest is the best. Like the environmental conditions of high temperature and humidity when growing. Second, cutting propagation: Belgian rhododendron has a long growing period and can be cut all the year round.
2019-01-16