不同用量沼肥对高羊茅草坪质量及生长的影响

摘要

采用地下渗滤系统,通过盆栽模拟试验研究了不同用量沼肥对高羊茅(Festuca arundinaces Schred.)草坪质量及生长的影响,探索沼肥在草坪上应用的可能性.结果显示:随着沼肥用量的增加,不同处理之间的草坪颜色质量、草屑带出总量、草屑中氮磷养分带出量均存在显著差异(P<0.05).在相同氮索用量200 kg N·hm-2下,化肥处理的表现优于沼肥处理,这可能与二者施用方式不同有关.当沼肥用量由200 kg N·hm-2增加为1400 kg N·hm-2时,草屑带出总量、草屑中氮、磷养分带出量分别增加了2.0,3.4和2.2倍,表明草坪在消纳利用沼肥方面具有较大的潜力.%Effects of different biogas fertilizer on turf quality and growth was investigated using simulation tests with a subsurface infiltration system. Results showed that the turf color quality, the total clipping amount and N, P values had significant differences between treatments biogas increased. Under the same amount of 200 kg N · hm-2, the quality of chemical fertilizer treatment was better than biogas fertilizer treatment. It may result from different application methods for two treatments. With biogas fertilizer application increasing from 200 kg N · hm-2 to 1400 kg N · hm-2 , the total clipping amount and N, P values increased 2.0, 3.4 and 2.2 times, respectively. These results indicated potential for biogas fertilizer application on turf growth.