Toona sinensis is a perennial deciduous tree species that likes temperature, light and humidity. It is suitable for growing in temperate and subtropical regions with an average temperature of 8- 10 degrees Celsius, and it grows in mountains, hills and plains below 1600 meters above sea level. At present, China has many professional growers in Shandong, Hunan and other regions. The planting method has also changed from open-air planting to greenhouse planting, even soilless cultivation, and the development of planting technology is changing with each passing day. With the previous planting experience of Chinese Toona sinensis, I also learned to work hard. Now I will answer the planting technology of Chinese Toona sinensis in greenhouse.
1 1 month, which can be transplanted into the greenhouse. First of all, after the planted Toona sinensis seedlings are transplanted into the greenhouse, all the leaves should be removed. A transplanting pit with a width of 1- 1.5 m and a depth of 20-25 cm was dug in the greenhouse, and the Toona sinensis seedlings in heel in were cultivated and moved into the pit in the way of high in the north and low in the south, and watered. When transplanting, we should pay attention to straighten out the root system and make it fully extended. The transplanting density is: one-year-old seedlings per square meter 150 plants, and two-year-old seedlings per square meter 80- 100 plants. Management of temperature and humidity after transplanting in greenhouse: After transplanting Toona sinensis into greenhouse, the temperature should be gradually increased. After the topping of Toona sinensis in China began, the temperature was controlled at 18-24 degrees during the day and at 12- 16 degrees at night, and the relative humidity in the air was kept at about 60%-70%.
Fertilizer and water management: when the Chinese Toona sinensis seedlings in the greenhouse begin to grow terminal buds, topping should be carried out for the first time, and 5-6 kilograms of urea should be applied per mu. The second topdressing is in the first crop after the harvest of Toona sinensis, and the compound fertilizer is 8- 10 kg per mu. At the same time, pay attention to watering, spray branches with 5% urea solution to keep enough water, and harvest when the leaves are about 10-20 cm long and reddish brown in color. The top buds are harvested first, and then the side buds are harvested. Generally, it is the left and right sides for half a month, and it can be harvested again. It can harvest about 3-5 sides in one season. If you protect each plant of Toona sinensis, you can produce about 200-260 grams of Toona sinensis buds every season.