1. When the average outdoor temperature is higher than 18°C, it can be produced in open field, but it is necessary to properly shade, avoid direct light, and spray more water to maintain proper temperature; during the high temperature season in summer, shade and spray water cooling measures should be adopted to make the temperature Keep it within 35°C, otherwise the buds will stop growing; in winter, early spring and late autumn, greenhouses and greenhouses can be used for production. The optimum temperature for the seed buds of Toona sinensis is from 15°C to 28°C, and the temperature requirement should be met first.
2. From the perspective of saving land, three-dimensional cultivation can be adopted. The cultivation frame is made of angle iron, steel bars, bamboo rods, wooden rods and other materials. Cultivated erection of 3 to 5 layers, each layer spacing from 30 cm to 40 cm, depending on the seedling tray and set, in order to facilitate the operation, the height is generally not more than 1.65 meters is appropriate.
3. It is better to use light plastic products for seedling trays, which can reduce the weight of the cultivation rack. Seedlings are 60 cm long, 25 cm wide and 5 cm high for easy movement and harvesting.
4. Cultivated soil can be smashed and sifted by the slag, and the turfgrass soil, washed sand and the like after high temperature sterilization are mainly used.
5. Spray setting: The growth cycle of the toon bud is short. The water holding capacity in the substrate can basically meet the water requirement of the bud during the whole growth period. After the bud grows out of the substrate, spray it regularly, and do not spray water or splash water.
6. The site selection should be based on changes in the season.
Second, the method
1. Remove the seeds of citron seed and remove impurities. Soaking in warm water at 55°C, soak the seed for 12 hours, remove, rinse, and drain the moisture on the surface of the seeds, and place a germination at a constant temperature of 22°C～25°C. When the seed buds grow from 2 days to 3 days to 1cm～2cm sowing.
2. Scrub the seedling tray, lay a layer of white paper on the bottom layer, and lay a layer of 2.5 cm wet soil on the white paper. The ratio of culture soil to water mix is ​​2:1. Then the seeds of pods with good buds were spread evenly on the substrate. The seeding rate was 240 grams per square meter. The seed was then covered with a 1.5 cm thick culture soil and immediately sprayed after being covered.
3. After sowing 5 days, the seed buds will give birth to the soil layer. After 10 days, the hypocotyls of the seed buds of Toona sinensis grow to 8 cm to 10 cm in length, 1 mm in thickness and 5 cm to 7 cm in length. During this period, attention should be paid to spraying so that the air humidity is always maintained at about 80%, for 12 days. It can be harvested after 15 days. When harvesting, the buds are pulled out of the substrate and washed and packaged.
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