Maintenance methods of green flowers and safe trees

-, name traceability

This green leafy plant, known as "Peace Tree", is the evergreen Xiao Qiao W. Its real name is lanyu cinnamon and its scientific name is cinnamomumkotoensekanehiraetsasaki. The addition of this word is the name "Hongtouyu", which is the name of Orchid Island in Taiwan. It was originally produced on Lanyu Island. Its aliases include red-headed fish cinnamon, red-headed mountain cinnamon, Fanglan mountain cinnamon, big-leaf cinnamon, Taiwan cinnamon and so on.

Morphological characteristics

Orchid cinnamon is evergreen Xiao Qiao W, the trees are dignified, the bark is yellowish brown, the plant height can reach 10 meters to 15 meters, and the branchlets are yellowish green, smooth and glabrous. Leaves opposite or subopposite, ovate or ovate-oblong, apex acute-lanceolate. Leaf blade larger, 10 cm to 22 cm long and 5 cm to 8 cm wide, the surface is bright green, abaxially metallic luster, grayish green, 3 veins from the base, concave and convex and lateral veins obviously about 1 cm from the leaf base. When extending, venules sometimes appear on the side of the lobe, and the veins on both sides are obvious and shallow in the shape of a honeycomb. Petiole ca. 1.5 cm, reddish brown to brown. The fruit is ovoid, about 1.4 cm long and 1 cm in diameter. Fruit bowl cup-shaped, margin short fan-shaped, glabrous. Fruiting stalk ca. 1 cm, glabrous. This is a beautiful potted plant, it is a very beautiful landscape tree.

Third, ecological habits

Orchid cinnamon is warm and humid, sunny, bright, cold-resistant, frost-free, foggy, high-temperature, drought-intolerant, stagnant water, cold and dry. It is recommended to use acidic and sandy soil, which is loose, fertile, well drained and rich in organic matter. In its native environment, it is rich in Phalaenopsis, so it is recommended to create a warm and humid environment under human cultivation conditions. The fruiting period is from August to September.

Fourth, reproductive technology

The propagation of Lanzhou cinnamon is usually carried out by sowing seeds. In southern China, ripe purple-black fruits can be sown from September to October. You need to store the seeds in wet sand and in a cool place. Pay attention to prevent the seeds from getting moldy. After the seeds are broken and exposed, they will be planted or bagged. Before sowing, soak seeds that have not germinated in the sand for 30 minutes in 0.3% formalin solution. Pour out excess liquid and seal for 2 hours. Rinse with water to remove liquid from the seed coat. Soaking seeds in water for 24 hours can increase the germination rate. If the seeds are not sterilized, the seeds can be directly soaked in warm water of about 40 degrees Celsius, and the germination rate can be increased. Keep the seedbed moist, remove grass from the soil after 1 stroke 3, and then cover with grass. When the seedlings grow 3 to 4 true leaves, they can be applied to secondary liquid fertilizer every month. After the fall, the application stops and works against the cold. The temperature in winter is not less than 5 degrees Celsius.

In addition, flower lovers can also try seedlings.

Fifth, the main points of management

1. Temperature is suitable for growth from 20 degrees Celsius to 30 degrees Celsius. Young trees can't stand low temperatures. Plants cultivated in the open field or cultivated in the open field can easily cause bark cracks and withered leaves or even the whole plant will freeze to death when the frost is more than 5 days. Whether it is small potted plants in the family garden or large-scale production and management cultivation, the temperature of the greenhouse in winter should be kept at no less than 5 degrees Celsius, so that the leaves can always remain green and beautiful. Larger plants can endure a low temperature of about 0 degrees Celsius in a short period of time when there is no cold wind in the shed. Potted plants from the Yangtze River valley should enter the hut before the frost comes. After Qingming Festival, the house will be driven out of the house after Qingming Festival. Be careful to prevent cold damage caused by night frost or cold. In the midsummer season, when the temperature exceeds 32 degrees Celsius, the awning and foliage should be humidified and cooled to maintain strong growth potential.

Light blue cinnamon needs better light, but it is more resistant to shade. The light requirements vary with age, young trees are resistant to negative, and plants aged 3 to 5 years old have higher plant growth under shaded conditions. It takes 6 to 10 years of plant life. More lighting. After potted plants enter the summer, they can be placed in the shade or shelter 40% to 50% of the awning. If the light is too strong, it can cause the leaves to turn yellow and lose their appearance, reducing their ornamental value, especially if potted plants are displayed indoors for a long time and move outside for restorative maintenance in summer. It should be protected in an environment with 40% to 50% shadows. Don't rush too quickly, otherwise it is easy to burn the blade. In addition, in late spring and early summer, after exposure to the sun on rainy days, shadow treatment should be done in time, otherwise it will lead to leaf burning and difficult to recover. The green spirit of leaves in a short time.

3. Moisture Lanyu cinnamon needs a wet potted soil environment. For this reason, potted plants should always keep the soil moist, but should not accumulate water, and the relative humidity of the environment should be kept above 80%. In hot summer or autumn air dry seasons, including winter, water should often be sprayed on leaves and their surroundings to create relatively humid local spaces and microenvironments to promote strong growth. . Watering should be controlled after autumn and less in winter. If there is water in the pot soil, it will cause the plant to turn yellow, and the lower leaves will fall off after yellowing. In serious cases, the roots of plants will die, and special attention should be paid to the rainy season.

4. Soil potted or bagged Peran cinnamon should be made of loose, breathable, well-drained fertile acid culture soil or humus soil rich in organic matter. If the soil plate or pH value is higher than 7.5, it will cause the leaves to turn yellow, grow and sprout seriously, affect the germination and regeneration, and even shorten the culture life. To this end, small plants should be replaced every year-large plants can be replaced with soil for two years, and the soil loosens every month during the growing season. Especially after the heavy rain, the basin should be checked in time and found that there is water in the basin. To replace loose potted soil. For potted plants, the annual turnover time is better arranged from spring emergence to pre-germination.

5. The fertilizer Lanyu cinnamon has full plants, large leaves, relatively strong growth and a large amount of fertilizer needed. In addition to the requirement of cultivating soil fertility, potted orchids can be used every month from spring to early autumn, and fertilizers or fertilizer pancakes can be used every month. Topdressing should be stopped in winter to prevent damage to the roots, resulting in leaf yellowing or atrophy, otherwise it is difficult to restore the original appearance of the plant.

Sixth, pest control

1. Diseases

1 anthracnose mainly affected the seedling stage and adult leaves. Infected leaves, mostly leaves, leaf tip, leaf margin, brown, irregular shape, often extend or merge into large gray-brown spots, brown and wavy edges, there are many small black spots on the disease spot, that is, its conidial disc. Conidia are transmitted by wind and rain. When humidity is high, spores invade leaves or seedlings, which is harmful to continuous rainy days, lack of sunlight, soil viscosity or moisture in the greenhouse. It is more popular within 24 months. Control methods: detect and remove a small number of diseased leaves in time; add phosphorus and potassium fertilizer in the growing season to improve plant resistance; at the beginning of the disease, 25% of the charcoal wettable powder 500 times, or 60% of the charcoal wettable powder 700 times, or 75% methyl thiophanate 600 times, alternately spraying wine to 15 days every 10 days, 3 to 4 times.

From April to May, brown spot occurred in the new leaves of plants, oval yellow-brown spots began to appear on the surface of the leaves, and then expanded continuously, and small black spots and lesions appeared in the forehead lesions. Leaves. The back is purple, so the whole leaf is yellow and withered, resulting in a large number of leaves. Control method: 1% Bordeaux solution can be used for prevention; a small number of diseased leaves should be burned in time; at the beginning of the disease, 50% carbendazim wettable powder or 50% carbendazim wettable powder 1000 times liquid, or 50% disinfection aqua regia solution 1000 times, alternately sprayed 3 to 4 times every 10 days.

(3) the roots of brown diseased trees gradually turn yellow and droop, when it is serious, the brown leaves are dry, the stems lose water, contract, the roots turn brown and rot, and the diseased plants die. For a short time. The root causes of the disease, diseased soil and remaining disease residual strains are the main sources of infection of diseases caused by wind and rain or contact, and usually occur as a single plant. Prevention and treatment: severely damaged plants and plants should be rooted and burned, and disinfected with 50% carbendazim wettable powder 600 times; in the early stage of the disease, 50% methyl thiophanate-sulfur suspension 800 times, or 50% root rot wettable powder 800 times for prevention and treatment.

two。 Insect pests

Leaf worms mostly occur in summer and autumn, it rolls several new leaves into nests, and the larvae lurk in them to feed leaves, which can be sprayed with 1000 times of 90% trichlorfon crystal solution or 40% dimethoate EC.

(2) the young leaves and buds of locust orchid are easy to cause aphid sucking harm, resulting in greasy leaves, and then cause coal pollution, affecting the growth and display of plants. Control methods: after planting grass W ash on plants, rinse with water; spray bitter juice of leaves to effectively kill insects; use 10% imidacloprid WP spray 2000 times.

Time: 2019-05-16 Click: