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引入幂指函数模型［ｙ＝ ｙＬＭｅｘｐ（－ ｂｄｒ）］模拟杂草密度与作物产量间的关系，通过１０组不同来源的杂草与作物竞争资料的模拟，证明幂指函数模型具有实际的生物学意义，能准确地描述多种杂草和多种作物间的竞争关系，预测杂草为害作物可能造成的产量损失。为杂草的经济防除提供了一种新的研究方法。
By introducing the exponential function model [y = yLMexp (- bdr)], the relationship between weed density and crop yield was simulated. Based on the simulation of competition data of 10 different weed and crop plants, the power-exponential function model was proved to have practical biology Meaning, can accurately describe the competition between a variety of weeds and a variety of crops, prediction of potential weeds crop damage caused by the loss of production. It provided a new research method for the economic control of weeds.