[Crop]: Watermelon (Citrullus lanatus (Thunb.) Matsum. et Naka)
[Location]: Qingzhou City, Shandong Province, China
[Product]: Hei Wang
[Time]: 2019.3.13
[Result]:
1. Fast recovery of seedlings after planting.
2. Spout earlier.
3. Vigorous growth.