Chemical fertilizers do not work on the soil but are enforcedly imbibed by plants.化学肥料并不对土壤起作用，但被植物强行吸收。The use of chemical fertilizers has turned the farmer into a cross between an industrial chemist and a mechanic.化学肥料的使用把农民变成了工业化学家和机械工。Many fertilizers contain nitrogen compounds.许多化学肥料都含有氮化合物。