1、 Soil
The best place for seedling cultivation is sandy loam soil, which should have a slight slope to facilitate drainage, turn it about 33cm deep, and apply fully decomposed high-quality farmyard fertilizer, about 5000kg / 667m2. The height of the bed shall be determined according to the terrain and the height of the groundwater level. The width of the bed surface is 1.2m and the length is self-determined p>
2、 Moisture
Keep the bed moist. Water the seedlings in time after they are unearthed. When the seedlings grow to 15cm, there is no need to water them again. Pay attention to drainage in rainy season, and erect the scaffold in time when it is up to 30cm long p>
3、 Fertilization
When the seedling height is 3-7cm, dilute fecal water shall be applied once, with the dosage of about 1200kg at 667m2. In summer, apply manure water again, 667m2, with an amount of 1500-2000kg. No manure will be applied after Ridge closure p>
4、 Illumination
A sunshade shall be set up for the seedling with a height of 5cm, based on the light transmission of the bed surface. The best material for sunshade is black pine branches, and the sunshade shall be removed gradually for the seedling with a height of 10cm p>