Planting Technology Lists
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Management of rhododendron after flowering
After pruning and plastic rhododendron blooming, it is generally necessary to manually remove the residual flowers, and then carry out appropriate thinning, cut off the dense branches and let them re-branch. Fertilizer and water management in northern China, the water is alkaline and hard. Long-term watering of flowers is easy to cause soil Alkalization and affect the growth of flowers. Therefore, the water should be stored in a container for more than 24 hours before watering, and then used after chlorine volatilization. It can also be watered every 10 days or so with the right amount of ferrous sulfate or edible white vinegar. Cuckoos do not need much fertilizer, they usually apply fertilizer with water, so they can
2019-01-15 -
Causes of Defoliation and Death of Rhododendron after Organic Fertilizer Application
Azalea irrigation after the application of organic fertilizer system, there are abnormal deciduous death, there may be the following reasons: first, there may be a small amount of salt (sodium chloride) mixed in eggshells and bean dregs, and azalea fine fibrous roots are sensitive to sodium ions, resulting in the death of rotten roots and deciduous leaves. The second is the concentration of 5%, which may be thicker for the fine hair fiber roots of rhododendrons, or the final remaining fertilizer solution, which will have a higher concentration, making it difficult for plants to resist. Third, fertilization time is inappropriate, such as in the flower after wither, when the new root just out,
2019-01-15 -
Identification and Control of several Common fungal Diseases in Rhododendron
Among the common rhododendron diseases, the main fungal diseases are rhododendron powdery mildew, rust, gray spot, blight, cake leaf disease and so on. (1) the main differences of the following diseases are: 1. Rhododendron powdery mildew: it usually occurs in the middle and later stage of growth, which at first fades to green spot, then grows white mycelium layer, produces a large number of white powdery conidium layer, and later becomes grayish brown. Rhododendron rust: transparent gold or transparent gold on the back of the leaves at the initial stage
2019-01-15 -
Control of rhododendron crown net bug
Host and damage characteristics: damage to rhododendron and horse drunken flowers. The adult and nymph sucked leaf sap and excreted feces, resulting in needle-like white spots on the front of the leaves to all-white green, yellow on the back of the leaves, hindered plant photosynthesis, slow growth and early defoliation. Morphology and habits: the adult is small, flat, dark brown, nearly 4 mm long, and the membrane of the forewing is covered with reticulate patterns. The anterior chest dorsal plate extends forward to cover the head, and there is also a reticular pattern on it. In Guangzhou, about 10 generations occur every year, overwintering with adults and nymphs.
2019-01-15 -
Charcoal production and control of Rhododendron crenatum
Stephanitis scott. Hemiptera is a family of insects, distributed very widely, azalea flowers are the main pests. Its host plants are Rhododendron and Pieris, which seriously affect the growth, reproduction and ornamental value of the two genera of flowers. 1. Harm symptoms Rhododendron crown net bug mainly damages the leaves of host plants with nymph and adult, absorbs juice, excretes feces, makes the back of the leaves appear rusty yellow, needle white spots appear on the front of the leaves, and seriously makes the whole leaves lose green and pale, affecting the plant.
2019-01-15 -
The cuckoo turned the basin.
General potted rhododendron needs to turn the pot after 2 to 3 years. With the growth of the plant, the growth of the root is limited, and the nutrient elements in the cultivation medium are gradually exhausted, which needs to be turned over. Before potting, according to the size and growth of seedlings, choose a suitable flowerpot, do not transplant small seedlings into large pots, so that the moisture is not easy to control, easy to make seedlings grow poorly. When using the new basin, you need to soak in potassium permanganate solution for half an hour to remove sundries, eggs and alkaline substances. After cleaning
2019-01-15 -
Tissue Culture and cultivation Management techniques of Rhododendron
It is not easy for rhododendron to breed and breed as a kind of high-grade flower in North China. Mainly because most of the soils in North China are alkaline, and rhododendrons like typical acidic soils, so they have some difficulties in reproduction and planting, so they can only be used as greenhouse flowers. There are several kinds of rhododendron reproduction, such as sowing, cutting, striping and grafting, tissue culture and so on. Tissue culture does not need seeds, just use the stem tips of the current-year branches of rhododendron. A large number of small rhododendron seedlings can be cultured in test tube in a very short time, and it is not limited by the season.
2019-01-15 -
Cultivation and Garden Application of Rhododendron
China has a long history of rhododendron cultivation, and artificial cultivation was recorded as early as the Han Dynasty. In the Tang Dynasty, rhododendron began to be used in private gardens. Because of its beautiful plant shape and colorful flowers, it is deeply loved by people. Rhododendron generally refers to the genus Rhododendron of the rhododendron family. There are about 960 species in the world. China is the birthplace and distribution center of rhododendron, with about 542 species, mainly distributed in the Hengduan Mountains of southwest, Yunnan, Xizang and Sichuan provinces. Rhododendrons like cold and cool, but avoid the hot sun.
2019-01-15 -
Cut flowers harvested and kept fresh: black chrysanthemum
Chrysanthemum, Chrysanthemum morifolium, Chrysanthemum morifolium. The plant height is 30cm to 120cm. Inflorescences capitate, 3-5 cm in diam.; ligulate flowers bright yellow; tubular flowers purple-black, dense globose. The natural florescence is from June to September. [cut flower harvest] the harvest site is the pedunculated inflorescence of Chrysanthemum morifolium. When most of the ligulate flowers are unfolded, they can be harvested and operated.
2019-01-15 -
What if the banyan tree loses its leaves?
At present, there are mainly two kinds of banyan trees raised by flower friends,-ginseng banyan and money banyan, both of which can be called banyan trees. some flower friends find that their own banyan trees have lost their leaves and do not know what to do. In fact, banyan trees should distinguish the situation when they lose their leaves. You can't rescue them blindly according to the online method.
2019-01-15