Abstract: The ecological features of matter conversion of mushroom cultured on sterilized and bagged wheat straw and cotton seed shells are studied in the paper. No significant difference of conversion rate (Rc) was found. but significant difference was existed in residue rate (Rr) and dissipation rate (Rd) when mushroom was grown on different media. Highly significant linear regressions were found between Rc, Rd and Rr. In different treatments, the regression coefficients (b) of Rd against Re are consistent, but the regression intercepts (a) have larger variation ; both b and a of Rd against Rr show a significant variation with very closed ratios of b/a. The results indicat that the dissipation of original materials for mushroom cultivation could be devided into two parts: the basic dissipation irrelative with mushroom yield and the direct production dissipation positivily correlated with output rate of mushroom production.

Key words: Mushroom cultivation, Ecological efficiency, Regrssion analysis, Agroecosystem engineering, Spinifex littoreus, succession period., psammophyte, water potential