Cedar is one of the elegant ornamental tree species with its flattened lateral branches, pagoda-like crown, magnificent posture and evergreen seasons. Cedar is usually transplanted with young seedlings. In order to expand the provenance and meet the market demand, this paper introduces a new technology of transplanting seedlings - bud seedling transplanting.
1. Hotbeds for Buildings
Choose the sandy loam hotbed with high dry terrain and sunshine. The width of the hotbed is 1 metre and the length depends on the number of seeds. The hotbed is 30-40 centimeters above the ground. It is slightly higher in the middle of the bed. Bricks or mud piles can be used around it and pure fine sand can be laid inside. The hotbed is covered with bamboo bows. Agricultural plastic film.
2. Seed treatment
Cedar seeds have more empty grains, so it is necessary to select seeds, remove the empty grains, soak them in cold water for 1-2 days before sowing, and then soak them in 0.3-0.5% potassium permanganate solution for half an hour to one hour.
3. Timely sowing
Hotbed sowing date is slightly earlier than direct sowing. Generally sown from late February to early March. Before sowing, the hotbed is watered through with water, and then the seeds are evenly sown on the sand. Make sure that the big head of the seeds is up and the sand is 1.5-2 cm thick after sowing. One or two seeds per square meter. Hot beds are often kept moist, the temperature is controlled within 30 degrees Celsius, when the weather warms up too high, it is necessary to timely uncover the plastic film and spray water to keep warm.
4. Transplantation of Buds and Seedlings
The seeds were unearthed from late March to late April. The cotyledons of the seedlings are all unfolded in the middle and late April. At this time, the seedlings are 4-7 cm high, the main roots are 4-8 cm long, and the lateral roots have not yet emerged or just begun to grow. Therefore, the seedlings should be transplanted into the field or containers in time. When transplanting, the buds and seedlings are gently digged out from the sand bed and placed in a seedling container pre-equipped with clear water.
Move into the field, insert a 2 cm wide sword-shaped bamboo stick into the soil, open a slightly deeper hole than the root of the bud seedling, and then put the root of the bud seedling into the soil.
If transplanted in containers, plastic bags with a height of 20-25 centimeters and a diameter of 7-10 centimeters can be used to fill nutrient soil and arrange them neatly on a seedbed 1 meter wide. When transplanting buds and seedlings, it is necessary to master that the soil should not be too dry and wet, and that the buds and seedlings should be small rather than large. In general, 10-15 days after transplanting, the seedlings grow new roots one after another. The row spacing of transplanted plants in the field was 30 *30 cm.
5. Seedling management
The following points should be mastered in seedling management:
(1) The transplanting bed should be covered with a 1-meter-high shade shed. Early cover and late uncovering in sunny days, demolished in mid-and late August.
(2) Soil moisture in the seedbed should not be excessive. Water accumulation should not be avoided. Water should be drained in time during rainy season.
(3) Prevent the harm of underground pests such as grubs and ground tigers and standing blight.
(4) Soil is often loosened and weeded in the seedbed.