An experiment was conducted to study the effects of application of sludge compost in rape and lettuce soils. The experiments site was located in the Water- Saving Irrigation Experimental Station in the Northwest Agriculture and Forestry Technology University, the sewage sludge was obtained from the north stone bridge dirty water handles factory in Xi'an City, and rape and lettuce were planted. The sequential extraction proceeding was applied to measure the distribution of Cu and Zn in soil fractions. Relati...