一看土壤颜色。肥土土色较深,而瘦土土色浅。二看土层深浅。肥土土层一般都大于60厘米,而瘦土相对较浅。三看土壤适耕性。肥土土层疏松,易于耕作;瘦土土层黏犁,耕作费力。四看土壤淀浆性及裂纹。肥土不易淀浆,土壤裂纹多而小;瘦土极易淀浆,易板结,土壤裂纹少而大。五看土壤保水能力。水分下渗慢,灌 A look at soil color. Soil color darker soil, while the soil is light earth color. Second, see the depth of soil. Soil and soil are generally greater than 60 cm, while the relatively shallow soil. Third, see soil adaptability. Loose soil loosening, easy to cultivate; lean soil plow, farming laborious. Fourth, see soil slurry and cracks. Soil is not easy to slurry soil, soil cracks more and more small; very easy to cast leatland soil, easy to knot, small and large soil cracks. Five to see soil water retention capacity. Moisture infiltration slow, irrigation