一看土壤颜色。肥土土色较深,瘦土土色较淡。二者熟土层深浅。肥土壤土层一般15～21厘米,瘦土较浅。三者适耕性。肥土土质酥,易耕作,干耕土块易碎,湿耕土不粘犁;瘦土土质粘犁,耕作费力。四看淀浆性。肥土不易淀浆,瘦土极易淀浆板结。五看田土裂缝。缝多而细小者为肥土、裂缝大的为瘦土。六看保水能力。水分下渗慢,灌一次水 A look at soil color. Soil color darker, lean soil color lighter. Both familiar soil depth. Fertile soil is generally 15 to 21 cm, thinner soil. Three suitable tillage. Soil crisp soil, easy farming, dry soil block fragile, wet plow soil non-stick plow; lean soil plow, farming laborious. Fourth look at the slurry. Soil is not easy to slurry, thin soil easily formed plate knot. Five see the cracks in the soil. Slender but small for the soil, a large crack for the lean soil. Six to see water retention capacity. Moisture infiltration slow, irrigation water