A PRELIMINARY STUDY ON AGRICULTURAL UTILIZATION OF THE SLUDGE AND GARBAGE OF GUANGZHOU CITY
广州市污泥垃圾农用资源化的初步研究

In this study , mud and garbage are used to make organic composite fertilizer and growth medium. Fertilization experiments with lettuce and rice are conducted and heavy metals in the crops tested. The results show that with proper measures, mud and garbage can raise yield obviously while the heavy metals remain under the criteria. Affecting factors of heavy metals in the crops are discussed and suggestions for agricultural utilization of mud and garbage proposed.