Look at the soil color. The soil is rich in soil, while the thin soil is light in color. Look at the depth of soil. Fertilizer soil layers are generally greater than 60 cm; lean soil is relatively shallow. See the soil suitable for farming. Loose soil and loose soil, easy to cultivate; thin soil layer plow, farming effort. Look at soil cracks. There are many cracks in the soil. The lean soil is easy to compact and the soil cracks are small and large. Look at soil water retention. 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. 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. See the ability to conserve fertilizer. Fertilizers are strong, and soils that are fat enough for long-term or potential fertility are all fertile soils. Look at the 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. Gelatin Size 00 Empty Capsule,Hard Empty Gelatin Capsules Size 00,Halal Certificated Vegetable Empty Capsules,Empty Separated Halal Gelatin Capsule Ningbo Jiangnan Capsule Co., Ltd. , https://www.ningbocapsule.com