Look at the color of the soil. The soil is rich in soil, while the thin soil is light in color. Second, look at the depth of soil. Fertilizer soil layers are generally greater than 60 cm; 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. Fertilizer 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 capacity. Under the water, the water can percolate slowly, and the water can be kept for 6-7 days as the fertilizer land. The lean soil can be infiltrated or cracked quickly along the crack. Six to see the water quality. The water is creamy, sticky to the feet, and the sun is big enough to make big soil when used in the sun or on the foot; the water is light and colorless, the paddy fields are not blistering, or the bubbles are small and easily scattered as lean soil. Seven see night tide phenomenon. There is nocturnal tide, dry and wet, not easy to dry and sunburn hard soil; no night tide phenomenon, soil hardening hardening for lean soil. Eight to see fertilizer retention ability. Strong fertility, long enough for fertilizers, or potentially fertile soil are all fertile soil. Nine to see plants. The soil that grows red-headed sauce, goosegrass, and barnyardgrass is used as a loam; soils such as calfgrassgrass, duckweed, trifolium, wild orchid, wild onion and the like are all lean soils. Ten to see animals. There are fertile lands such as snails, muddy grasshoppers, earthworms, and large grasshoppers; there are mostly lean soils such as small ants and large ants.
Warning Tape
Safety warning tape plays a warning role in our life to ensure the safety of personal.
In our
life, it's a warning to prevent people from entering the place. To
prevent people from entering " Non internal personnel prohibited Non
internal personnel prohibition of entry ". Warning tape can ensure the
safety of internal equipment and personnel.
Another
warning tape is made of aluminum foil, which can be buried in the
ground as a marker, such as an underground pipe, which can be detected
by instruments without digging.
Warning Tape,Aluminum Warning Tape,Detectable Aluminum Tape,Detectable Caution Tape
Greateagle Safety Products Co., Ltd. , https://www.greateaglesafety.com