Molinia meadows are seminatural habitats of Natura 2000, and their continued existence is heavily dependent on human activities. The aim of the present study was to determine the effect of the harvest time of meadow biomass originating from Molinia meadows on the methane yield. After 35 days of conducting batch digestion tests, the average methane yield was found to be slightly different over the course of four biomass harvest dates: at the end of May, 221 ± 8 NL CH₄ kg⁻¹ VS; at the beginning of July, 211 ± 21 NL CH₄ kg⁻¹ VS; at the end of July, 200 ± 8 NL CH₄ kg⁻¹ VS and on September 1, 197 ± 2 NL CH₄ kg⁻¹ VS. During the initial stages of batch fermentation, a higher methane yield was obtained from the biomass harvested at the end of May. This biomass was characterised by higher contents of N, P and K, as well as a lower C:N ratio and reduced Ca and cellulose content. Relative to the content of elements and cellulose as well as the C:N ratio observed, significant correlations were found for methane yields from biomass obtained between the fourth and eighth days of batch digestion. It was determined that the average methane yield on a per hectare basis for the harvested biomass differed depending on the harvest date under investigation. The use of biomass from Molinia meadows for biogas production has the potential to become an important factor in the environmental protection of this type of habitat.

Molinia草甸是Natura 2000的半自然栖息地，它们的持续存在在很大程度上取决于人类的活动。本研究的目的是确定采自Molinia草甸的草地生物量的收获时间对甲烷产量的影响。经过35天的分批消化测试后，发现在四个生物量收获日期期间平均甲烷产量略有不同：5月底为221±8 NL CH ₄ kg ^-1 VS；5月底为221±8 NL CH ₄ kg -1VS。7月初，211±21 NL CH ₄ kg ^-1 VS；在7月底，200±8 NL CH ₄ kg ^-1 VS在9月1日，197±2 NL CH ₄ kg^-1 VS. 在分批发酵的初始阶段，从5月底收获的生物质获得了更高的甲烷产率。该生物质的特征在于较高的N，P和K含量，以及较低的C：N比和减少的Ca和纤维素含量。相对于元素含量和纤维素含量以及所观察到的C：N比，发现在批次消化的第四天和第八天之间，从生物质中获得的甲烷产量具有显着的相关性。已确定，所收获生物量的每公顷平均甲烷产量因所调查的收获日期而异。莫利尼亚生物质的利用 用于生产沼气的草甸有可能成为此类栖息地环境保护的重要因素。