Before the bottle is put into the water, the leaves at the base of the cuttings should be cut off, and the base should be cut into an oblique mouth with a sharp knife to absorb nutrients and water. Before rooting, change the clean water every 3-4 days 1 time, and do not move or change the direction for 10 days. White fibrous roots can be produced in about 15 days.
The abundant bamboo in Phnom Penh can be potted or planted in water. Garden soil and a small amount of river sand can be used as culture soil for potted plants, and a small amount of baked and mashed eggshells can be used as base fertilizer.
Second, fertilization.
A small amount of compound flower fertilizer or nutrient solution should be applied in time for water conservation. However, fertilization should not be too much, so as not to cause "seedling burning" or ineffective growth. If fertilization is not applied for a long time, the plants will grow very thin, the leaves will turn yellow, and the ornamental effect will also be affected. Potted plants are applied with dilute liquid fertilizer or compound flower fertilizer 1 time every month.
Third, water.
It is not advisable to change water frequently after the root is cured, and it should be replenished in time after the water is reduced.
During the growth of potted Phyllostachys pubescens, the water should be sufficient and the soil should always be moist. In hot summer and dry season, spray water on the leaves 2-3 times a day, otherwise it will cause the tip of the leaf to dry up if it is too dry.
Four. Temperature and lighting
When potted, usually put it in a bright place indoors, avoid light in summer, and see more sunshine in winter and spring. Too dark is not conducive to the full expression of leaf color, which will affect the ornamental effect. Just keep the overwintering temperature above 10℃.
Verb (abbreviation for verb) reproduction
The propagation of Phragmites communis in Phnom Penh generally adopts cutting method, which can be inserted in sand or water. The most suitable cutting time is May-July, and it can be carried out all year round if heating equipment is available. Cuttings can cut stem segments without leaves, which are 8-9 cm long. After being inserted into the sand bed, as long as it is kept moist and shaded properly, it can take root after 2-3 weeks, and can be potted after 1 month.
When pruning, you can put the pruned branches into bottles and raise them with water. The following points should be paid attention to when raising rare bamboo with water in bottles:
(1) Before putting it into the bottle, the leaves at the base of the cuttings should be cut off, and the base should be cut at an oblique angle with a sharp knife, and the incision should be smooth to facilitate the absorption of water and nutrients. Change water every 3-4 days 1 time, do not move or change direction within 10 days, and white fibrous roots will grow around 15 days.
(2) It is not advisable to change water after rooting, and the water can be replenished in time after the water volume is reduced. Changing water frequently will easily lead to yellowing of leaves and wilting of branches.
(3) After rooting, a small amount of compound fertilizer should be applied in time to make the branches grow thicker and the leaves oily green. If fertilization is not applied for a long time, the plants will grow thin and yellow, which will affect the ornamental value. However, fertilization should not be too much, so as not to cause "root burning" or ineffective growth.
Six, pest control
Anthracnose of Fu Guizhu;
Symptomatic diseases often occur at the tips or edges of leaves and leaves. At the initial stage of the disease, the site of the disease is dark green irregular spots with water stains, which gradually spread to the upper leaves. Semi-circular to amorphous in the middle stage, with dark brown edges and obvious boundaries; There is a yellow halo at the outer edge of the diseased leaf spot in the later stage, and the middle of the spot is grayish brown or grayish white to yellowish brown. The ring pattern on the spot surface is obvious or not obvious, there are small black spots on the diseased spot, and the leaves begin to turn yellow and die. Once the disease spots spread to leaves, tender leaves and buds, main stems and the base of leaf stems, when the disease is serious, the stems and leaves will wither and die quickly. Under rainy and foggy weather conditions, diseased leaves spread and plants grew badly, which seriously affected the effect of leaf viewing.
Prevention and control methods should strengthen the conservation and management of Phyllostachys pubescens, and should not be planted too closely; Pay attention to avoid freezing and freezing injury; Moist irrigation, rational fertilization and increased application of phosphorus and potassium fertilizer can promote growth and improve disease resistance. In winter and spring, it is necessary to cut off diseased leaves and clean up dead leaves, focus on burning to reduce the incidence, sprinkle quicklime for sterilization and soil disinfection; Or spray 50% compound carbendazim 500 times solution once to prevent disease, and the disease prevention effect is better. Improve the permeability of the field or garden, pay attention to ditch drainage and waterlogging prevention after rain, reduce the humidity in the field, and it is not suitable to apply nitrogen fertilizer in the open field. Build a sunshade net to reduce the high temperature and strong light exposure during the growing period. Kill spiders, longicorn beetles, mites, scale insects, etc. Timely, reduce media.
When the diseased plant is found, it should be sprayed in time to control the disease. 75% chlorothalonil +70% thiophanate-methyl wettable powder (1: 1) 600 can be sprayed alternately at the initial stage of onset.
800-fold solution, or 800-fold solution of 50% compound thiophanate-methyl, or 600-800-fold solution of 50% lennon wettable powder, or 12.5% emulsifiable concentrate, 1000- 1500-fold solution, and 500-fold solution of 25% control wettable powder. The above drugs are used alternately, once every 7 days and sprayed continuously for 3-4 times. Generally, it is sprayed quickly before or after the rainstorm to control the spread and infection of spores and conidia produced by bacteria, and the control effect is good.
Phyllostachys pubescens leaf spot;
Symptoms appear on the leaves. The skin lesions are brown spots with yellow edges at the beginning; After dilation, the lesion is close to a circle,
The interior is gray, with dark brown edges, and the periphery is yellow. Black particles appear on the lesion under wet conditions.
The cause of this disease is fungal disease. Pathogens live on diseased plants and can be directly infected from the stomata of leaves with the help of airflow and insects. It is easy to get sick in the greenhouse environment all the year round; This disease is very serious in humid conditions.
Control methods During the maintenance period, control the planting density and keep ventilation and light transmission. Spraying bactericide such as Bacillus Bunker and phosphorus, aluminum, manganese and zinc at the early stage of the disease.
Tips:
If bamboo is not well managed, it is easy to cause physiological diseases such as leaf fading, loss of luster and root rot. Fuguizhu likes scattered light and is afraid of direct light. If it is placed in the hot sun during maintenance, the light leaves will fade, become dim and lack luster; In severe cases, they will be burned or charred. If it is cultivated indoors in the dark for a long time, it is easy to make the plants grow white, but also lack luster, the leaves will fade, the markings will disappear, and the ornamental effect will be greatly reduced. Don't put the bamboo near the TV, and don't put it on the ground where air conditioners and electric fans often blow, so as not to dry the tip and edge of the leaves. Therefore, the maintenance should be placed near the east window or the north window where there is bright scattered light, because the light there is bright and indirect, which is more conducive to its growth.
It is best to buy rich bamboo in the north in spring, and enter the suitable growth period after buying it back. Heating facilities in winter can also be purchased before the new year. Potted plants should be strong, with dark green leaves, bright Phnom Penh stripes, no dry tips, no feet, plant height less than 30 cm, and 3 to 6 branches. For hydroponics with various shapes, plants with uniform stem thickness, beautiful shape and no rot at the base and root system should be selected. In particular, Fu Guizhu does not grow well in alkaline soil and dry climate, and his leaves grow thin and dull.