水土保持学报2017，Vol.31Issue(6)：33-38,45,7.DOI:10.13870/j.cnki.stbcxb.2017.06.006
不同施肥对双季稻田径流氮磷流失特征的影响
Effects of Fertilizer Applications on Runoff Nitrogen and Phosphorus Loss in Double Cropping Paddy Field
摘要
Abstract
In order to provide scientific basis for rational fertilization,a field experiment was conducted to evaluate the effects of different fertilization methods on runoff nitrogen (N) and phosphorus (P) loss in double cropping paddy field.Six treatments were designed:without N (WN),chemical fertilizer (HF),pig manure alternative 20％ N fertilizer (ZF),biogas slurry and biogas residue alternative 20％ N fertilizer (ZYF),compost alternative 20％ N fertilizer (DF),and green manure in early rice and straw in late rice alternative 20％ N fertilizer (LDF).The results showed that total N,NO3-,NH4+,total P and water soluble P in runoff water were decreased after base fertilizer and topdressing application.In double cropping rice field,total N,NH4 + and NO3 contents in runoff water under HF reached 5.91 mg/L,3.65 mg/L and 0.82 mg/L respectively,which were higher than other treatments.Compared with HF,total N,NH4+ and NO3 contents in runoff water were significantly decreased when chemical fertilizers were partially replaced with organic materials,and the reduction of DF reached up to 1.18 mg/L,0.71 mg/L and 0.14 mg/L respectively.Moreover,the treatments with organic materials alternative 20％ N fertilizer significantly increased total P and soluble P content in the runoff water with the exception of DF.Compared to HF,other organic-inorganic fertilizers treatments decreased runoff N loss.In addition,total N,NH4 + and NO3 loss of DF was 10.25 kg/hm2,6.17 kg/hm2and 1.71 kg/hm2 respectively,which were nearly equal to those of HF.In conclusion,DF could significantly decreased runoff N and P loss,and was of great importance in protecting environment and controlling non point pollution.关键词
不同施肥/双季稻/有机无机肥配施/氮磷含量/累积流失负荷Key words
fertilizer application/double cropping rice/organic-inorganic fertilizers application/N and P content/loss loading分类
农业科技引用本文复制引用
姜利红,谭力彰,田昌,刘强,张玉平,杨兰,谢桂先..不同施肥对双季稻田径流氮磷流失特征的影响[J].水土保持学报,2017,31(6):33-38,45,7.基金项目
国家“十三五”重点研发计划项目(2016YFD0201200) （2016YFD0201200）
国家“十二五”科技支撑计划项目(2012BAD15B04,2014BAC09B01) （2012BAD15B04,2014BAC09B01）
湖南省重点研发计划项目(2016JC2032) （2016JC2032）
