Abstract: Using impregnating specimen can preserve plants shape and color. In this research, with different CuSO₄ concentration of solution and four desert plants as variable factors,experiments were conducted by orthogonal design L₉(3⁴). The results showed that the optimal combination were：Haloxylon ammodendron(C.A.Mey. ) Bge. in 15%CuSO₄, Calligonum mongolicum Turcz. in 10%CuSO₄, Ephedra intermedia Schrenk in 5%CuSO₄, Tamarix ramosissima Ledeb. in 5%CuSO₄ impregnating solution, the optimal formvla had better simulation effect. Experimental results show that the method is effective for the kind of problems and instructive to experiment.

Key words: desert plants, impregnating, experiment