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1问题徐鹍[广东省深圳市育才中学(518067)]人教版高中《生物·必修3·稳态与环境》P.102“探究土壤微生物的分解作用”实验参考案例1中,落叶是否需要灭菌处理?如果实验组的树叶灭菌了,那么对照组的树叶是否需要灭菌?如果不灭菌,该实验是否符合单一变量原则?此实验的自变量是土壤中的微生物,但是落叶上的微生物是否会对实验结果造成
1 Problem Xu Xun [Shenzhen Yucai High School (518067)] PEP Senior High School “Biology · Compulsory 3 · Steady State and Environment” P.102 “Exploring the Decomposition Effect of Soil Microorganism” In Experiment 1, Is it necessary to sterilize the leaves? If the leaves of the experimental group are sterilized, is the control group leaves need to be sterilized? If not sterilized, is the experiment consistent with the principle of a single variable? The experimental variables are soil microorganisms, but Whether the deciduous microorganisms will cause the experimental results