The soil is thin and ten
October 19 03:04:26, 2018
Look at the color of the soil. Fertilizer soil is darker, while lean soil is lighter. Second, look at the depth of soil, the soil layer of the soil is generally greater than 20 cm, and the lean soil is relatively shallow. Three to see the soil suitable for farming. Fertile soil is loose and easy to cultivate. Slough soil clay ploughs, 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 be soaked in the soil for 6-7 days. The soil that does not infiltrate or infiltrates quickly along the crack is lean soil. Six to see the water quality. The water is greasy, sticks to the feet, and when the sun shines on or when it is stomped, large air bubbles are used as the loam; the water is light and colorless, the paddy fields are not blistering, or the bubbles are small and easily scattered for the slender soil to watch the 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 valerian, etc. is a loam, and the soil of long calf hairy grass, bermudagrass, three-edge grass, ergata, wild orchids, wild shallots, etc. is lean soil. Ten to see animals. There are snails, muddy grasshoppers, earthworms, big grasshoppers, etc., as fat soil; small ants, big ants, etc. are mostly thin land.