Study on the net photosynthetic rate and growth of Zoysia japonica on different soil matrixes

Stems of Zoysia japonica were separately planted on the four matrixes such as humus (A1), residual soil after construction (A2), soil with surface layer removed (A3) and sand (A4) in the experimental garden of Shenyang Normal University. The effect of soil matrixes on net photosynthetic rate and growth of Z. japonica were measured. The results showed that the sequence of net photosynthetic rate and most of the measured growth indexes was A1＞A4＞A2＞A3. The high level nutrient of humus promoted the growth of Z. japonica greatly, and the growth indexes showed significant difference compared to other treatments (P0.01). The differences among A2, A3 and A4 were not significant (P0.05). The growth indexes of A4 better than A2 and A3, so the destroyed structure of soil was an unfavorable factor to influence the growth of Z. japonica.