First, read the English article below.

The hole should be wide enough to prevent accidental damage to the roots as you plant them. By having a wide hole, you also ensure that the soil directly surrounding the roots is not as compacted, making it easier for the roots to spread. In addition to being twice as wide as the clump of roots, the hole should also be about 4 to 6 inches (10 to 15 cm) deep. The roots should be below ground level, and the crown should be around 1 to 2 inches (2.5 to 5 cm) below ground level, as well. Refill the hole with the soil you initially removed from the plot. The soil should be of the same loamy consistency as the surrounding soil. Make sure that the roots are completely covered and firmly pack the soil down in place to remove any gaps of air. If planting multiple Astilbe divisions at once, the holes should be spaced far enough apart to allow the roots room to spread. Immediately after planting the root clumps in the ground, you should thoroughly drench the soil with a garden hose or watering can. New plants absorb a great deal of water before they sprout and produce flowers, and if the roots are allowed to dry out during this time, the growing process may be disrupted. 

Now, please write a short abstract for it in Chinese. Abstract:
挖一个和根差不多大小的洞。 将分根插入洞里。 洞里填满土。 根与根之间间隔30厘米到1米。 给根系彻底地浇水。