土壤年龄 [土壤] soil age ; talaj kora ; idade do solo ; wiek gleby
土壤年龄系列 chronomorphric soil
土壤年代序列 soil chronosequence
国际土壤年 International Year of Soils
土壤绝对年龄 [土壤] absolute age of soil
土壤相对年龄 [土壤] relative age of soil
幼年土壤 [土壤] young soil
又称土壤真实年龄 soil true age
年土壤水分盈亏 annual soil water surplus and deficit
森林仅仅燃烧一次就能留下足够的黑碳，来保持数千年土壤肥沃。
Burning the forest just once can leave behind enough black carbon to keep the soil fertile for thousands of years.
它可以在下雨时被冲刷掉，也可以释放到大气中，而磷与钙和铁结合，可以在土壤中保存数千年。
It can be washed out when it rains or it can be released to the atmosphere, whereas phosphorus combines with calcium and iron, and can be preserved in the soil for thousands of years.
某种非常有效的除草剂对玉米来说是安全的，但即使是除草剂的残留物也会对大豆造成损害，该残留物在施用除草剂一年多后仍残留在土壤中。
One very effective herbicide is safe for corn, but soybeans are damaged even by the herbicide's residue, which remains in the soil more than a year after the herbicide is applied.
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