Rose care
Watering
Rose is like a moist and afraid of wet, so whether it is a species or potted plant must have a good drainage system.
Fertilization
Rose Xifei, according to the principle of "thin fertilizer and diligence", constantly supplies various nutrients.
illumination
Rose is a positive flower, it is warm, and it can be safely wintered outside in North China and south of it. Roses should be properly shaded in the summer, avoiding sun exposure; to loosen the soil and keep the ventilation smooth; to spray water on the foliage to increase the air humidity.
Prune
Pruning is an indispensable important process in the landscaping of roses. Generally, adult plants are trimmed before the spring germination. The amount of pruning should be moderate to ensure that the rose branches are moderately dense and beautiful in appearance.
Rose breeding method
Seeds can be used for seedlings, but in production, the young shoots are used to cut seedlings and they are easy to survive. Valuable varieties are more challenging to cut, can be propagated by beading or grafting, and the asexually propagated seedlings can bloom in the same year.
For the seedlings used for potted plants, the older shoots of the fine varieties should be selected, and the seedlings should be nursed by the bead method, and the main shoots should be trimmed for artificial dwarfing. For the seedlings used for cutting flowers, it is necessary to select seedlings that can form a flowering mother branch and a large flower color.
Rose disease prevention
There are few pests and diseases in wild rose. Artificially cultivated pests such as saw bee, rose bee, scale insect, aphid and coke disease, canker disease, black spot disease, etc., except for the use of liquid spray, should be Other flowers and trees are used in configuration, and it is not appropriate to plant too much at one place. Every winter, the old branches, and dense branches are often pruned with strength to maintain light and ventilation, which can reduce pests and diseases.
Black spot
Mainly invading the leaves, petiole and young shoots. When the leaves are initially attacked, there are purple-brown to brown spots on the front, and most of them are round or amorphous black-brown lesions. It can be sprayed with carbendazim.
Powdery mildew
Invasion of young leaves, white powder appeared on both sides, early disease is not obvious, after 3-5 days of white powder layer, the leaves are water-stained, gradually losing green to yellow, causing the leaves to fall off when severely injured. Spraying carbendazim in the onset period, but the best effect is in the national light.
Rust
Rust is a common disease of rose. Both leaves and new shoots may develop disease. Serious illness can cause large areas of the leaves to fall off, causing the flowers to lose their ornamental value and even die. If the disease is found, it should be treated in time.
Variety classification of roses
The main varieties of common cultivation are: pink dough, large flower shape, single petal, pink or rose red, multi-flowered clusters in the shape of a parachute; lotus rose, flower double petals, pink to pink, most clusters; seven sisters, Flower double petals, deep pink, often 7 to 10 clusters together, with aroma; white jade, white flowers, double petals, often 7 to 10 clusters; Japanese no thorns, flowers white, single petals, a village branch More flowers, open and fragrant; common rose, no characteristics.
Use of rose
Ornamental value
Rose is one of the world's most famous ornamental plants. It has a long history of cultivation in China. In 1630, Wang Xiangjin was the master of the group. In 1688, Chen Yizi made a "secret flower mirror". In 1708, Wang Wei made "Guangqun Fangpu", all of which had roses, rose flowers and roses. The record of flowers and woody flowers.
Before the 18th century, European rose had only a few species such as French rose, Venetian rose and tassel, but lacked the varieties of four seasons of flowering, and did not have the varieties of yellow flowers. After the introduction of rose in China in the 18th and 19th centuries, it crossed with the original varieties and repeated backcrossing, and cultivated varieties such as rose flowers, rose roses, wild roses, and roses. Rose flowers are pleasant and pleasant. Many kinds of petals can be used to extract precious aromatic oils. Commonly used types are rose, rose, mountain thorn, wild rose and so on.
Industrial role
Rose essential oil is extracted from roses, especially the flowers of R. Damascena, which can be used to make perfumes.
