The changing regularity of germination rate, morphological characteristics, growth height and damage status of different vegetation species influenced by the internal pore pH value of ecological porous concrete were studied, including bermuda grass, festuca elata keng, bluegrass and ryegrass. The ecological porous concrete was treated by alkali lowering processing technology with different ferrous sulfate concentration solution. The test results show that when the internal pore pH value of eco-porous concrete is between 6.5 and 7.5, the growth and physiological indexes of four kinds of species reach the best. The critical conditions for the alkalinity of the chemical compatibility between the four kinds of species and the ecological porous concrete were investigated, and it can provide a reliable theoretical basis for the vegetation selection under different alkaline environments. The research results also provide reliable technical support for the application of green ecological concrete.%研究采用不同浓度硫酸亚铁溶液浸泡降碱技术处理后的生态多孔混凝土对狗牙根、高羊茅、黑麦草和早熟禾的发芽率、形态特性、生长量和受害状况的影响规律.研究结果表明:生态多孔混凝土内部孔隙pH值控制在6.5~7.5时,4种草种的生长及生理指标状况达到最佳;并探明狗牙根、高羊茅、黑麦草和早熟禾4种植被与生态多孔混凝土化学相容性的碱度临界条件,为不同碱性环境条件下优选不同植被品种提供可靠的理论依据.研究成果可为生态多孔混凝土在技术的推广应用方面提供可靠的技术支持.
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