Introduction to the varieties of Impatiens
1. Head Fengxian alias block head Fengxian. It is a variant of balsam. Flowers terminal on main stem or branch tips. Flowers large, double petalous. Branches expand to form clusters.
2. The dwarf balsam is a variant of balsam. The plant is shorter, 20-30 cm high.
3. Impatiens longicornis is a variety of Impatiens balsamina. Lateral branches meander and extend horizontally.
4. He's also known as glass Cui. They are common species. Perennial herb cultivated mostly as a biennial. Plant height 20-30 cm. Stem translucent. fleshy, stout, much branched. Leaves ovate lanceolate, leaf tip, leaf margin has obvious serrations. Flowers solitary; apical branches or upper leaf axils. Flowers, there are obvious serrations, flowers from white to pink, rose red, until deep red, there are pale purple, orange red and other color varieties, color is very bright and beautiful. The flowering period is very long, reaching 45-60 days. Like wet soil and sparse shade environment, avoid low temperature, also avoid sun exposure, not resistant to high temperature. Suitable for greenhouse cultivation. It is one of the most potted plants and the highest ornamental value among the flowers.
5. New Guinea balsam is a common species. Perennial herb. Stems fleshy, stout, branched and dilated, stems dark red. Upper leaves are whorled, lower leaves are opposite, leaves ovate-lanceolate, dark green or copper green, midvein conspicuous, midvein and petiole red. Flowers deep red, many varieties, white, pink, rose red, orange red, deep red. Not high temperature, avoid sun exposure. Has attracted attention, is gradually being applied to green space and potted plants.
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Prevention and treatment of Impatiens Ring Disease
The disease occurs on the symptomatic lobe. Produce large round spots with dark brown periphery. There are obvious concentric wheel lines on the surface of the lesion. In the later stage, the middle part of the lesion turned grayish brown and scattered with small black spots. AscochytaphaseolorumSaccardo, a half-known pathogen. In the route of transmission, the pathogens overwintered and oversummer on the diseased remains by conidia and ascomycetes. Conidia can be transmitted by wind and rain. Later, conidia were produced on the disease spot and continued to spread, causing re-infection.
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Techniques for cultivating boxwood in Hokkaido
There are many breeding methods of Populus tomentosa in Hokkaido. Here are some common methods: 1. Cutting method: cutting method is divided into hardwood and tender wood cutting method. Hardwood cuttings take place between October of each year and the end of March of the following year. For units with sufficient provenances, cuttings can be cut slightly longer, units lacking in provenances, cuttings can be slightly shorter, cuttings are 8 to 15 cm long, cuttings are generally 3 to 5 cm deep, and roots can grow after 1 month. Rapid growth can be achieved as long as the cuttings are carried out according to the methods described below.
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