Cultivation method of Phoebe bournei: loosen the soil and water it.
Water and loosen the soil in time after planting to reduce water evaporation. Water moderately at ordinary times, and water frequently during the growing period, 2 ~ 3 times a week, and the infiltration depth is 10 ~ 15 cm. With the growth of seedlings, the number of watering is reduced, and the soil and surrounding environment are often kept moist to prevent drought and flood. In the hot and dry season, we should often spray water or spray the leaves and the surrounding environment to increase the air humidity and keep the soil moist. Avoid too dry soil in summer and too much water in winter. Too dry or too wet can easily cause the lower leaves to droop. Avoid strong light in summer, put it in the shade of the shed, and sprinkle water frequently to keep the air high humidity.
Plastic surgery management
The beauty of Aralia elata lies in its tall and straight posture. In the second year of cutting seedlings, or when the seedlings grow to about 50 cm, they should be supported by vertical sticks to prevent the plants from distorting and affecting the ornamental effect. Young trees should turn pots 1 time every year or the next spring, and plants over five years old should turn pots 1 time every two or three years, and combined with spraying chlormequat chloride, the height of Phoebe bournei should be controlled. In the northern area, leave the room at the end of April or early May to avoid the wind and keep it in a sunny place. Proper shade should be provided in midsummer, and pots should be turned in time during the growing period to prevent trees from growing askew and affecting viewing. Phoebe bournei is cold-tolerant, and the northern area should be moved indoors at the end of September or the beginning of 10 (cold dew), with sufficient sunshine, ventilation, no fertilization and no water control, and the room temperature should not be lower than 8℃.
Diligent fertilization
Potted Phoebe bournei should be mixed with humus soil, peat soil, pure river sand and a small amount of decomposed organic fertilizer. Potted soil should be mixed with 3 parts loam, 1 humus, 1 coarse sand and a small amount of plant ash, and the depth of the soil layer depends on the bud point where the upper roots are just exposed on the soil surface. Because new buds germinate in spring, topdressing with decomposed rare organic liquid fertilizer and calcium fertilizer 1 ~ 2 times a month can keep plants fresh and leaves moist.
The propagation mode of Aralia elata in Liaodong: sowing and propagation.
Because the seed coat is solid and the germination rate is low, it is best to break the seed coat before planting to promote its germination. In addition, the planted seedlings are prone to pests and diseases, so the soil used should be strictly disinfected. It is best to use sand bed or the above-mentioned broken shell sowing method to accelerate seed germination and improve seed germination rate, which can germinate in about 30 days.
cutting
Cutting propagation is easy and widely used. Cuttings are usually carried out in spring and summer, but the main branches should be selected as cuttings, and the plants growing with side branches as cuttings are skewed and not straight. The cutting length is 10 ~ 15cm, and it can take root in about 4 months under the conditions of 18℃~ 25℃ and high air humidity. If the base of cuttings is soaked with 200 ppm indolebutyric acid (IBA) for 5 hours before cutting, its early rooting can be promoted.
In order to get more main branches as cuttings, young trees can be cut off, so that many upright new buds emerge from the top and are cut off as cuttings in spring. After cutting the top, the mother plant can continue to grow terminal buds, which can be used for the permanent reproduction of the mother plant. The soil for potted Phoebe bournei should be composed of 40% peat soil, 40% humus soil and 20% river sand. The basin soil should be kept moist during the growing period. If it is too dry, the lower leaves will droop, but it should be kept slightly dry in winter. The room temperature should be kept above 5% in winter, and the low temperature will freeze the growing point to death.
High pressure plant regeneration
If conditions permit in the shed, the whole plant can be planted underground after girdling at an appropriate height, and the depth of incision is more than 10 cm. 1 ~ 2 years or so, plants rejuvenate, new roots grow rapidly, and then the old roots rot and remove, and the new plants are shorter and more ornamental.
Disease control of Aralia elata in Liaodong
anthrax
Prevention and control methods:
1, clean the countryside, remove the sick and disabled in time, take them out of the fields and burn them or bury them deeply.
2. Spraying 50% carbendazim wettable powder 700 times or more at the initial stage of onset. Sulfur suspension for 600 times, every 7- 10 day 1 time, continuously controlled for 3-4 times.
leaf blight
Prevention and control methods:
Refer to the control of leaf blight of Podocarpus. You can also spray 600 times of 40% polysulfide colloidal suspension, 600 times of 30% copper oxychloride colloidal suspension, 8,000 times of 25% myclobutanil EC, 8,000 times of 40% flusilazole EC, 1500 times of 50% methylhydroxylamine aqueous solution, or 69% acesulfame +75% chlorothalonil. In the garden with frequent diseases, it is better to spray the medicine once on the ground and trees in combination with garden cleaning in winter and spring.
control of insect
scale insect
Prevention and control methods:
It can be controlled by 40% omethoate 1000 ~ 1500 times.
The leaves turn yellow.
The causes of yellowing of Aralia elata leaves can be summarized as follows:
1, the light is too weak. It will grow well if it is maintained in a well-lit place. If it is left in a well-lit place for a long time, its leaves will turn yellow and fall off, so it is best to move it to a well-lit place, otherwise the plant will further aggravate the disease.
2. Water too much. The watering principle of nanmu is that when it is dry, it will be wet. Don't water too much and too often, otherwise the soil in the basin will not be watered, otherwise the roots will rot due to lack of oxygen, and it is difficult to absorb water and nutrients, and the plants will have uncomfortable symptoms.
3, low temperature or high temperature hazards. When the temperature is lower than 5 degrees, the leaves of Aralia elata will turn yellow and fall off a little. If the air humidity is low during high temperature, a large number of yellow leaves will appear.
4. The air humidity is too low or the wind is too strong, which causes the leaves to dehydrate and turn yellow. This needs to be placed in a sheltered place, or sprayed with water frequently to improve the air humidity.
5. Infection of diseases. Generally, carbendazim, chlorothalonil and other drugs should be sprayed for prevention.
The ecological habit of Aralia elata likes light, and the seedlings like shade; Minnan likes warm and humid climate, but is not tolerant of drought and cold. I like fertile soil. Fast growth, strong germination ability and strong wind resistance.