粉煤灰与无土基质混合对高羊茅生长的影响

Influence of fly ash and soilless substrates on the growth of tall fescue

采用单形格子设计将粉煤灰、草炭、木屑和稻壳4种基质按照不同比例混合,研究其对高羊茅生长的影响。结果表明,不同处理之间,除出苗密度外,株高、分蘖数、盖度、地上与地下生物量均达到了显著性差异。其中,粉煤灰、草炭、木屑、稻壳的体积比2∶6∶1∶1的T2处理和粉煤灰、草炭、木屑、稻壳的体积比2∶4∶1∶3的T9处理为高羊茅生长的最佳基质配比,T2处理的株高、盖度、地下生物量较其他处理表现最好,T9处理在分蘖数、地上生物量较其他处理表现最好。

According to simplex-lattice design,fly ash,peat,sawdust and rice husk were mixed together in different substrate ratios to study their effects on the growth of tall fescue.The results showed that except seedling density,other parameters including seedling height,tillers number,ground coverage,shoot biomass and underground biomass were significant difference in different treatments(P<0.05).Among all the substrate mixtures,T2 with the volume ratio of fly ash,peat,sawdust and rice husk were 2∶6∶1∶1,and T9 with the volume ratio of fly ash,peat,sawdust and rice husk were 2∶4∶1∶3 were the best.T2 performed the best on shoot density,coverage and underground biomass while T9 performed the best on tillering and shoot biomass.