; To establish a dwarf dense planting garden of Toona sinensis, we should consider the long-term nature. Suitable for areas with flat terrain, deep and fertile soil layer, good ventilation and sufficient water resources; That's enough. Toona sinensis is afraid of waterlogging, so the garden cannot be low-lying, sticky and stagnant; The ground and underground water levels shall not be higher than 2m to avoid root dysplasia. 1.2 design density

; When the garden was built, the design was changed, and it was densely planted, with a spacing of 4 cm ×; 80 cm, 2084 plants per mu. Five years later, the number of branches increased significantly; When the crown tends to be closed and the trees are handed over, it is cut again and the row spacing is sparse; Cut to 80 cm× 160 cm, and basically achieve permanent density. 1.3 Fine soil preparation, flying ditch point

And do a good job in irrigation and drainage ditches and other auxiliary facilities; Check carefully before planting,

; Construction, to ensure that drought and flood can be drained. According to the design density, north-south direction; Dig planting ditch in the direction, with a depth of 60; 80 cm, 40 cm wide? ; After backfilling, fill it with enough water to make it settle, and then dig a small hole at a fixed point for planting. Backfill.

; When applying high-quality organic fertilizer 5O00; Per mu; 7,000 kilograms. And with; two

; Short crop straw, topsoil, etc. Mix and filling into that ditch; Moderate and fertile gullies and caves can increase the content of soil organic matter. 1.4 Small hole planting

; 1.4. 1 The criteria for selecting strong seedlings are: the root system is fully developed; Da, with thick taproot and lateral root 3; 4, the root width is not less than 3o; ;

; 4o cm stems are thick, full and symmetrical, with obvious lenticels and springs; Bamboo shoots are long and autumn bamboo shoots are short; Buds are large and full, without damage; Root neck thickness is not low; At 1.5cm, the height of seedling trunk is about1m.

; 1.4.2 planting. In order to prevent seedlings from freezing injury, before germination in spring; Planting. In the original dug planting ditch, press 40 cm; Digging small holes between plants, and applying human superphosphate or diammonium phosphate to each hole; 0.5; 1 kg. The depth of planting soil should be the original soil mark at the root neck. After planting, water the roots.

; 1.5 Post-planting management

; 1.5. 1 seedlings that are not dwarfed and shaped in the nursery, after planting; The stubble should be leveled, that is, the seedlings should be cut and left15; The weight of 20 cm is short; Cutting, promoting the germination of lower part 2; Three primary collateral branches. Cutting and sealing; Prevent the loss of lard and the like,

; L_5.2 is covered with plastic film, watered after planting, and dried after water seeps out; Cover the surrounding soil into a shallow dish and cover it with a piece of 40 cm size; Plastic film, in order to increase the temperature and preserve water, promote the early germination of branches. 2 plastic pruning technology

; 2. 1 shoot growth characteristics and its relationship with yield and pruning; The growth of Toona sinensis has a strong apical advantage, usually; The terminal bud is developed, germinates first, and can be sustained and vigorous under natural conditions; Growth, forming an obvious central trunk. The terminal bud germinates and grows to 3; ; 5 cm, lateral buds began to germinate. After the lateral buds grow to a certain length; It is capped and no longer grows, and the buds below it are difficult to germinate. Therefore, in the natural state, branches are often distributed in layers with few branches. The phenomenon of bare pole is serious, and the branches of trees are few, so the buds sprouted in spring are just right; Without it, the yield of Toona sinensis buds is naturally not high. On the same branch, the top of Toona sinensis; Buds germinate early,