Temperature and light
The optimum growth temperature is 20 ~ 28℃, dormancy temperature is 65438 03℃, and overwintering temperature is 5℃. If the temperature is too low, chloasma will appear at the tip and edge of the leaves, and in severe cases, the shoots or the whole plant will be frozen. Therefore, it is necessary to move into a greenhouse for maintenance in the northern winter. If it is placed indoors, it should be placed in a sunny place, and the room temperature should be kept above 6℃ to 8℃. When the temperature is low at night, you can put on a plastic bag to keep warm. When the sun comes out during the day and the room temperature rises, it is necessary to take down the plastic bag in time to cool down and prevent suffocation. If there is heating equipment indoors, put the basin far away to prevent drying or drying the branches and leaves. Also pay attention to the indoor air flow, but when opening the doors and windows, don't let the cold wind blow directly on the branches and leaves, and don't move outdoors to bask in the sun at will to prevent freezing.
Moisture and humidity
Brazilian wood needs less water, but requires high humidity. After the basin is lifted, water the foot root and place it in a bright room or a cool shed for maintenance. The basin soil should be kept moist, and the leaves should be sprayed with water frequently to improve the air humidity of the surrounding environment, but the basin soil should not accumulate water to avoid root rot caused by poor ventilation. Wood in northern Brazil should be maintained in spring, summer and autumn during its growth. Water 1 time every 2 ~ 3 days in sunny days, and water 1 ~ 2 times per day is appropriate for the leaves. After the end of autumn, it is advisable to control the amount of watering and keep the basin soil slightly wet. Water should be controlled in winter, and the basin soil should be kept half dry and half wet. If it is drenched too much, the roots and leaves will rot.
Soil and fertilizer
Brazilian wood is suitable for loose, well-drained and humus-rich fertile river sand loam. Potted Brazilian wood can be mixed with garden soil, humus soil, peat soil and river sand in the ratio of 3: 2: 2: 3, or the fertile pond mud can be dried in the sun and finely ground by 2/3, and the coarse river sand 1/3. If thick stems are selected for planting, the culture soil can be made of vermiculite, peat soil or garden soil mixed with river sand. Brazilian potted wood in the market is mostly fine sand, which is used by producers to make plants take root fully. Long-term use will be harmful to plant growth. In order for plants to thrive, peat soil must be replaced in stages. In addition, Brazilian wood should be changed once a year. When changing pots, replace the old soil with 1/3, and then replace it with new silt soil, and trim the aged scorched leaves on the leaf stems and the lower parts of the stems. Brazil wood needs to consume some of its own nutrients during its growth. If it is not fertilized in time, it will cause insufficient stamina and gradually degenerate. During the growth period, organic fertilizer should be buried at the base or edge first, and then liquid fertilizer or compound fertilizer should be applied12 times every 15 ~ 20 days to ensure the flourishing growth of branches and leaves. Thin fertilizer should be applied instead of thick fertilizer, and the fertilization period is from May to 10 every year. Stop fertilizing in winter and move indoors for the winter. For striped varieties, attention should be paid to reducing the proportion of nitrogen fertilizer when fertilizing, so as not to cause the white leaves to grow, leading to the darkening or even disappearance of stripes.
Eliminate pests and diseases
Brazilian wood sometimes has dead leaves and dead shoots, which are mostly physiological diseases caused by drought, low temperature and improper watering and fertilization. The control methods are: strengthening cultivation management, controlling temperature and humidity, rational fertilization and proper ventilation.
Brazilian wood should always keep its leaves clean, and remove the insect body in time when it encounters pests. The sugarcane borer is very harmful to Brazilian wood. The damaged Brazilian wood can be moved to the outdoor shade and sprayed with 40% omethoate EC 1000 times or 90% trichlorfon/800 times, once a week 1 time, three times in a row.