The experiment assumed two kinds of the rice soil of different fertility level.
试验是采用肥力水平不同的两种水稻土进行。
In the mean time, we also analysed changing laws of Lou soil? S physical properties in heavy loam soil region under different fertility level.
同时，还着重分析了重壤带的土娄土在不同肥力水平下其物理性质的变化规律。
In the mean time, we also analysed changing laws of Lou soil? S physical properties in heavy loam soil region under different fertility level.
同时，还着重分析了重壤带的土娄土在不同肥力水平下其物理性质的变化规律。
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