Look at the color of the soil. Fertilizer soil is darker, while lean soil is lighter.

Second, look at the depth of soil. Fertilizer soil layers are generally greater than 60 cm, while lean soil is relatively shallow.

Three to see the soil suitable for farming. Loose soil and loose soil, easy to cultivate; thin soil layer plow, farming effort.

Fourth, look at the soil slurry and cracks. Fertile soil is not easy to be soiled, soil cracks are numerous and small; lean soil is easy to slurry, easy to compact, soil cracks are small and large.

Fifth, look at soil water retention. Under the water, the water can permeate slowly, and the water can be kept for 6-7 days as a loam. The lean soil that does not infiltrate or infiltrates along the crack quickly.

Six to see the water quality. The water is creamy, sticky to the feet, and when the sun shines or when you step on the foot, it is a fat soil. The water is light and colorless, and the paddy fields can't afford bubbles, or the bubbles are small and loose.

Seven see night tide phenomenon. There is nocturnal tide, dry and wet, not easy to dry and hard for the fat soil; no night tide phenomenon, soil hardening hardening for lean soil.

Eight to see fertilizer retention ability. Strong fertility, long-term fertility, or potentially fertile soil are all fertile soil.

Nine to see plants. The soil that grows red-headed sauce, goosegrass, and valerian, etc. is a loam; the soil of long-grass hairy grass, bermudagrass, three-edge grass, wild orchids, wild onions and the like is all lean soil.

Ten to see animals. Soils such as snails, loach, cockroaches, and big grasshoppers are used as soil; soils such as small ants and large ants are often lean soils.

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Sharps waste is a form of biomedical waste composed of used "sharps", which includes any device or object used to puncture or lacerate the skin. Sharps waste is classified as biohazardous waste and must be carefully handled.

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