摘要
采用2年的田间小区试验,研究猪粪、猪粪堆肥或沼渣沼液与化肥配施对春玉米-小白菜轮作地氮磷径流损失与肥料利用率的影响。结果表明,有机无机肥配施可明显减少旱地氮素流失,NH4+-N和NO3--N流失量占总氮流失的比例为49.08%～52.02%,且地表氮素径流损失量随着猪粪堆肥用量的增加而降低;与施纯化肥相比,以20%的猪粪堆肥N与80%化肥N配施可分别降低氮素径流损失28.95%,2年总氮肥利用率提高8.13%。以猪粪堆肥或沼渣沼液与化肥配施可明显降低磷素径流损失,并提高磷、钾肥利用率;与施纯化肥相比,以20%的猪粪堆肥氮或沼渣沼液氮与80%的化肥氮配施可分别减少磷素流失4.74%和2.76%,2年总磷肥利用率分别提高1.06%和2.75%,2年总钾肥利用率分别提高2.62%和11.48%。
Field plot experiment for two years was conducted to study the effects of pig manure,pig manure composting or biogas manure combined chemical fertilizer on nitrogen（N）,phosphorus（P） loss and nutrient utilization rate in spring maize-cabbage rotation field.Results showed that combination of organic and chemical fertilizer could decline N loss,and the loss proportion of NH＋4-N and NO-3-N accounted for 49.08%～52.02% of the total N loss.N loss amount decreased with increasing application amount of pig manure composting.Compared to chemical fertilizer applications,the combinations of pig manure composting N by 20% and chemical N by 80% could decline N loss from field by 28.95%,the N utilization rate for two years improved by 8.13%.On the other hand,the combinations of pig manure composting or biogas manure and chemical fertilizer could obviously decline N loss from field and improve utilization rates of P and potassium.Compared to chemical fertilizer applications,the combinations of pig manure composting N or biogas manure N by 20% and chemical N by 80% could decline P loss by 4.74% and 2.76%,the P utilization rate for two years improved by 1.06% and 2.75%,the utilization rate of potassium for two year improved by 2.62% and 11.48%,respectively.
出处
《水土保持学报》
CSCD
北大核心
2013年第3期44-48,54,共6页
Journal of Soil and Water Conservation
基金
国家科技支撑计划项目(2012BAD15B04)
湖南省教育厅平台专项(12K065
11K034)
关键词
有机无机肥配施
猪粪堆肥
养分利用率
氮磷流失
combination of organic and inorganic fertilizer
pig manure composting
nutrient utilization rate
nitrogen and phosphorus loss
