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红叶石楠价格 单位:cm More Photinia frangipani Price Unit: cm
Red Heather Introduction
Family:
Rosacea

Latin name:
RED TIPLUOHU

Aliases:


Morphological characteristics:
Photinia x frasery is a collective name for hybrids of the genus Photinia of the family Rosaceae, an evergreen shrub. Leaves are leathery, smooth and shiny, oblong, with serrated edges. New leaves are bright red and old leaves are bright green. White cymose, pear fruit spherical. Hi-light and shade-resistant, strong budding, often trimmed leaves are always red. Among them, the horticultural varieties 'Red Robin' and 'Red Tip' are suitable for cultivation in the Yangtze River Basin.
In spring and autumn, the new shoots and tender leaves of Photinia flavescens are fiery red, colorful and long-lasting. During the high temperature in summer, the leaves turn bright green, bringing a fresh and cool feeling in the hot summer. In the winter when the snow is flowing, the foliage is more red, which is the best season to watch throughout the year. Photinia lobata has strong ecological adaptability, low temperature resistance, barren soil resistance, and also has a certain resistance to salt and alkali and drought. Sexuality likes strong light and strong shade resistance, but under direct light, the colors are more vivid. At present, this emerging color-leaf tree species is widely optimistic.

Distribution and habits:


Reproduction and cultivation:
One. Cultivation and Management Technology of Photinia fortunei
Purchase of 1 seedling
When buying seedlings, choose a supplier that has good reputation and can provide high-quality after-sales service to ensure the purity of the variety and reduce production risks. Especially high-quality container seedlings are better, because of the high consistency of the product and the developed root system, it can be transplanted with a substrate without harming the root. The survival rate is almost 100%, and it grows rapidly after transplanting.
.2 Selection and Arrangement of Nursery Sites
The soil of the planting site is preferably loose, fertile, slightly acidic to neutral, and convenient for irrigation and good drainage. Before planting, 3,000 kg of decomposed manure and 50 kg of superphosphate were applied per acre, and the ploughing depth of the soil was more than 25 cm. At the same time, pesticides were applied to control underground pests. After plowing, rake the soil finely and levelly, open a drainage ditch, and make a seedbed. The width of the bed surface is about 100cm.
3 kinds of seedlings transplanted
The time of transplanting seedlings is generally from March to April in spring and October to November in autumn. It can also be transplanted from June to September, but it should be supported by a branch net at a height of 50-100 cm from the seedlings to avoid direct sunlight. To influence the growth of the slow seedling stage, it must be determined in combination with local climatic conditions. The planting interval should be determined according to the length of stay in the nursery and the cultivation goal. If it is planned to cultivate annual small shrubs, the row spacing of the plants is preferably 35 × 35cm or 40 × 40cm, with about 3000 plants per acre.
When transplanting the seedlings, be careful of the humidity of the roots of the seedlings, remove the packaging and remove the nutrition bowl to ensure that the root system is intact. Dig the holes in the site, pile the roots with fine soil, and make the root system stretch and gently compact. Water the roots in time after planting.
4 cultivation management
During the slow seedling period after planting, special attention should be paid to water management. In the case of continuous sunny days, watering should be carried out 3 to 4 days after transplanting, and watering can be carried out every 10 days or so in the case of continuous rainy days. Drain in time. After about 15 days, the seedlings can be fertilized after passing through the slow seedling stage. Urea can be applied every half month in spring at a rate of about 5kg / mu, compound fertilizer can be applied every half month in summer and autumn at a rate of 5kg / mu, and rotten organic fertilizer can be applied at a rate of 1500kg / mu in winter. It is better to ditch and bury. Fertilization should be based on the principle of thin fertilizer and frequent application. Do not use too much at one time, so as not to hurt the roots. Usually weeding and weeding should be timely in order to prevent soil consolidation.
.5 Pest and Disease Control
Photinia fortunei is more resistant to pests and diseases, and no devastating pests have been found. However, if it is not managed properly or the nursery environment is poor, gray mold, leaf spot, or scale insects may be the cause. Gray mold can be prevented by spraying with 50% carbendazim 1000 times liquid spray, and can be controlled by spraying with 50% zeolite 800 times liquid spray during the onset period. Leaf spot can be controlled with 50% Carbendazim 300-400 solution or 50% Tobbutin 300-400 times solution. Scale insects can be sprayed with dimethoate emulsion 200 times or 800-1000 times.

application:
Market surveys show that there are very few evergreen or semi-evergreen red leaf trees in China's landscaping.
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