Look at the soil color. The soil of the fat soil is darker; the soil of the lean soil is light.
Second, look at the depth of the soil layer. The soil layer of the fat soil is generally greater than 60 cm; and the lean soil is relatively shallow.
Third, look at the soil for tillage. The loam soil is loose and easy to cultivate; the lean soil layer is sticky plough, and the cultivation is laborious.
Fourth, look at soil pulping and cracking. Fertile soil is not easy to be pulped, soil cracks are many and small; lean soil is easy to be pulped, easy to form knots, and soil cracks are small and large.
Fifth, look at the soil water retention capacity. The water is slow to osmosis, and the water can be kept for 6-7 days as the fertilizer land; the soil is not infiltrated or quickly infiltrated along the crack.
Six look at the water quality. The water is slippery, sticky, and it is fat when the sun shines or the foot is big; the water quality is light and colorless, the paddy field does not foam, or the bubble is small and easy to disperse as lean soil.
Seven look at the phenomenon of the night tide. There is a night tide, dry and wet, not easy to dry and hard for the soil; no night tide phenomenon, soil compaction is hard soil.
Eight to see the ability to maintain fertilizer. The soil for fertility is strong, and the soil for long-term fertilization and long-term fertility is fat soil.
Nine look at plants. The soils for growing red head sauce, goose grass, and valerian are fertile soil; the soils for growing cow grass, ragweed, lentils, wild orchids, and wild onions are all lean soils.
Ten to see animals. There are snails, loach, dragonflies, big grasshoppers, etc. for the fat soil; small ants, big ants, etc. are mostly lean soil.
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