Toona sinensis planting technology, watering and topdressing, 15 to 20 cm can be harvested.

Seed selection and sprouting: soak the full-grained seeds in warm water for 5-8 minutes, soak them in clean water for one day, spread them evenly on the mat, cover them with towels, and put them into the environment of 20-25 ℃ to promote germination. Sowing and raising seedlings: fertilize deeply, spread the seeds evenly on the seedbed after opening the ditch, and cover with fine soil, which can germinate and emerge in a week. Colonization: the plant can be planted after dwarfing. Daily management: timely watering, topdressing, shading, drainage.

1. Seed selection and budding

Select the full-grained, red-yellow seeds, soak them in warm water of about 40 ℃ for 5-8 minutes, stir constantly, remove them and soak them in normal water for one day.

After fully absorbing water, the seeds will be planted and spread out on the mat with a thickness of about 3cm. After spreading, cover the towels above, then put them in the environment of 20-25 ℃ for germination, regularly turn the seeds, and rinse with the same water as the environment temperature for germination, continue to accelerate germination after water control, and sow seeds when the seeds begin to sprout.

2. Sowing and raising seedlings

Select sandy soil with sufficient light, flat terrain, convenient drainage and irrigation and fertile and loose soil as seedbed, rake and level the soil, apply appropriate amount of fertilizer, turn deeply, open ditches and sow seeds, the ditch width is controlled at 5-6cm, the ditch depth is controlled at about 5cm, and the row spacing between ditches is controlled at about 1m.

Spread the germinated seeds evenly on the seedbed, cover with a layer of fine soil, control the temperature at about 20-23 ℃, weed and water regularly to ensure that the soil is moist. Generally, seedlings can germinate within 7 days.

Do a good job of fertilizer and water management at seedling stage to promote seedling growth. When 4-6 true leaves are unearthed, the work of interseedling and seedling fixing should be carried out in time, and dwarfing work should be carried out when the plant grows to about 50cm.

3. Colonization

Plants can be planted after dwarfing. Greenhouse cultivation is generally selected. Greenhouse technology can be used to create greenhouse environment. Before planting, soil preparation and fertilization are applied, 5000kg organic fertilizer is applied per mu, and then seedlings are planted on the whole border after spreading evenly. The width of the border is controlled at about 1m.

When planting, the soil should be attached to the root to avoid root damage, the planting density should be 30, 000 plants / mu, and the plant spacing should be controlled at 15 × 15 cm.

4. Daily management

After planting, we should do a good job in daily management. 20-25 ℃ is the most suitable growth temperature for Toona sinensis. They like sunshine and are not resistant to shade, but they can not be exposed to strong light, so we should pay attention to the time of illumination in the process of planting, replenish light artificially in overcast and rainy days, and shade well when the light is strong.

Toona sinensis likes to be moist but afraid of waterlogging, it should be watered in time when it is dry, and drainage and waterlogging prevention measures should be taken in rainy season.

5. Timely harvest

The growth rate of Toona sinensis is fast, and it can be harvested in time when it reaches 15-20cm.