Two composts prepared from agroindustrial wastes were assayed as substrates: C1 from brewing waste (yeast and malt) plus lemon tree prunings;
由工农业废料配制的两种堆肥作为试验用的基质：C1——酿造啤酒等废料（酵母和麦芽）加修剪下的柠檬树枝；
Seven composts and three biologic effective experiments had been done for this subject in excitation of Quzhou of Hebei Province and China Agriculture University in two years.
本课题在两年的时间里分别在河北曲周实验站和中国农业大学共进行了七次堆肥和三次生物肥效实验。
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