How to prepare the nursery land before raising seedlings?

In order to cultivate high-quality and strong seedlings, the nursery land must be carefully prepared before seedlings are raised. First, the nursery land should be leveled, and the elevation should be removed to cover the low-lying areas. If there is a need to move too much earth, the earth-moving method of digging ditches and removing the elevation should be used to cover the low-lying areas. It can also be leveled in sections, as long as the partial leveling can be poured and drained. After the land is leveled, sufficient base fertilizer should be applied and spread evenly over the entire nursery land. For every 667 m2, 4000 to 5000 kilograms of fermented and harmless organic fertilizer (either ring fertilizer or stable manure is acceptable) should be applied. 20 to 30 kilograms of ammonium sulfate should be added, and then deep Plow, turn the fertilizer into the soil, plow the soil to a depth of about 30 cm, then rake the ground to make a border, and make irrigation and drainage ditches. After watering, seedlings will be raised.