Loam is a soil with roughly equal proportions of clay, sand and silt.
壤土是由大约等份的黏土、沙和粉砂合成的。
Little interval of water dropper should be chosen for sand, but large interval of water dropper can be chosen for loam soil.
对于砂土，应选择小的滴头间距，而对于壤土则可以选择大的滴头间距。
Soil density and soil particle of the loam are decreased but those of the sand are increased.
壤土的土壤密度、比重降低，而砂土的土壤密度、比重增高。
Soil density and soil particle of the loam are decreased but those of the sand are increased.
壤土的土壤密度、比重降低，而砂土的土壤密度、比重增高。
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