目前,在土壤生态系统的研究中,实验生态学是主要的研究方面之一。其中模拟试验又已引起国内外研究者的广泛注意,是一种普遍采取的手段。在水稻土生态系统中,水分是影响系统中物质迁移的主要因子,同时引起土壤一系列物理化学和生物化学性质的变化,继而影响作物的生长。从1980年开始,我们进行了水稻土生态系统的模拟试验,研究水分状况对稻麦生长和土壤中物质移动的影响,为人工调 At present, experimental ecology is one of the main research aspects in soil ecosystem research. Among them, the simulation experiment has drawn widespread attention of researchers at home and abroad and is a commonly adopted method. In the paddy soil ecosystem, water is the main factor that affects the material migration in the system, causing a series of changes in the physicochemical and biochemical properties of the soil, which in turn affects the crop growth. Since 1980, we have conducted a simulation experiment on paddy soil ecosystem to study the effect of water status on the growth of rice and wheat and the material movement in soil,