To distinguish effects of soil factors and space factors, the experiment was conducted in black soil area, and soybean plants were cultivated with a model of different rages of sash.

• 摘要为了从理论上区分土壤因子和空间因子的作用，试验采用框栽的方法控制土壤面积，研究了增大空间因子对生长在不同土壤面积上的大豆植株的影响。