Afraid of strong light. Phyllostachys pubescens is a typical shade-tolerant plant. Large-scale production must be equipped with shading facilities, and 50% shading nets can be used, especially for sowing seedlings and newly cut seedlings. Avoid direct sunlight to avoid burning the leaves. Attention should also be paid to shading in midsummer, otherwise the leaves will age and lack natural luster, which will affect the ornamental value.
Afraid of air drying. Phyllostachys pubescens naturally grows in the tropical rain forest, and likes humidity. However, the accumulated water in potted soil will also make the roots rot, make the plants stop growing, and the leaves droop and lose luster, and the leaves are uneven. The principle of watering should be "rather wet than dry", and the soil in the basin should always be wet, but there should be no water accumulation. Water it every 2 ~ 3 days in spring and autumn 1 time. In midsummer, in addition to watering every day, water should be sprayed many times to keep the leaves fresh, and water should be sprayed frequently for hanging cultivation. In winter, the evaporation of leaves is weakened, so the amount of watering should be reduced.
Apply thin fertilizer frequently. Phyllostachys praecox is a fertilizer-tolerant foliage plant. In order to grow more new leaves with green color and natural luster, apply 1 time every half month during the growth period, and be careful not to let the fertilizer liquid pollute the leaves. At the same time, the roots of Phyllostachys pubescens are tender, so avoid applying raw fertilizer and thick fertilizer to avoid burning the roots. It is better to use Huiyou 20-8-20 four-season potassium nitrate and 20-20-20 general fertilizer, which is more conducive to the growth of Phyllostachys pubescens.
Need to be bound and shaped. Phyllostachys pubescens is a large foliage plant with thick stems and large leaves. Especially when it is divided into plants, a binding frame should be set to avoid lodging deformation. Remove the pending rear bracket. At the same time, when the leaves of the stem nodes grow too densely and the branches are too long after shaping, attention should be paid to pruning the whole plant to make it natural and beautiful.
Key points of protection of rattan.
Dazhu likes warm, humid and cool environmental conditions. When the temperature rises above 32℃, the growth stops.
It is beneficial to photosynthesis to spray water frequently in summer, maintain high air humidity and keep leaves clean. Potted soil requires fertile and loose slightly acidic loam with high water absorption and good water retention, and humus soil or peat soil is the best.
Small plants are moved to the outdoor semi-shade in summer. Large plants cultivated indoors for a long time should be placed in bright places, and bamboo growing indoors should be rotated regularly to make the whole plant receive light evenly and prevent the plant from polarizing. Fluid fertilizer/kloc-0 was applied every two weeks, mainly nitrogen fertilizer.
When plants grow to a certain height, they need to be supported and pruned to avoid growing too high.
In the growing period, plants grow rapidly, so the cultivation space should be spacious, otherwise it will affect the extension of stems and leaves and cannot show the beauty of leaf shape.
Eliminate pests and diseases
When it is dry indoors in winter, it is vulnerable to red spiders, and the damaged leaves will turn white until they turn yellow. Can increase the air humidity for prevention and control. The main disease is gray leaf spot of bamboo. The control method is to strengthen cultivation management and pay attention to controlling the room temperature not to be too low; Pesticide control can be sprayed with carbendazim or carbendazim solution, which can be cured after continuous application for a period of time.
Scale insects are the most common pests of Phyllostachys praecox, which can be cleaned with an old toothbrush and sprayed with 40% omethoate EC 1000 times. Common diseases include leaf spot, gray spot and stem blight, and 65% zineb wettable powder can be sprayed 600 times.
Postpartum treatment
Because of its peculiar leaves, bamboo-like stems and long aerial roots, bamboo has become a favorite indoor foliage plant. At the same time, Phyllostachys pubescens is particularly shade-resistant, decorative and evergreen, which creates the best conditions for configuration and placement. So it is suitable for interior decoration, exhibition hall and subway. In the southern gardens, it is very natural and generous to plant it scattered in the crevices and gullies beside the pool.