Optimization of cultivation scheme for <i>Brachythecium procumbens</i> and <i>Haplocladium microphyllum</i>

<i>Brachythecium procumbens</i> and <i>Haplocladium microphyllum</i>,two moss species widely distributing in parks and green areas,are of ornamental value in cities. Four factors which are matrix composition,nutrient solution composition and concentration,light intensity and gametophyte length,were included in the optimization of cultivation scheme for these two moss species. The effects of the factors on the biomass and maximum quantum yield of <i>B. procumbens</i> and <i>H. microphyllum</i> were detected under experimental condition. <i>B. procumbens</i> is suggested to cultivate on a matrix with peat and vermiculite at 1:1 volume ratio,in full light,to spray Hoagland & Arnon nutrient solution diluted twice by using its gametophytes at a length of ca. 1.0 mm;the ideal matrix is characterized by 5.841 pH,a conductivity of 140.2 μS&#183;cm^-1,a total porosity at 74.30%,a ratio of large porosity and small porosity at 1:5.84. For <i>H. microphyllum</i>,the species is suggested to cultivate on a matrix with peat and vermiculite at 2:1 volume ratio,in full light,to spray Hoagland & Arnon nutrient solution diluted twice by using its gametophytes at a length of ca. 1.0 mm;the ideal matrix is characterized by 5.764 pH,a conductivity of 165.4 μS&#183;cm^-1,a total porosity at 76.82%,a ratio of large porosity and small porosity at 1:4.33