期刊论文

中文

水土保持学报

1009-2242

2017

31

6

33-38,45

10.13870/j.cnki.stbcxb.2017.06.006

国家“十三五”重点研发计划项目（2016YFD0201200） 国家“十二五”科技支撑计划项目（2012BAD15B04,2014BAC09B01） 湖南省重点研发计划项目（2016JC2032）

本校为第一机构

通过定位试验,研究了不施氮肥(WN)、单施化肥(HF)、猪粪替代20%氮肥(ZF)、沼渣沼液替代20%氮肥(ZYF)、堆肥替代20%氮肥(DF)、早稻绿肥、晚稻稻草代替20%氮肥(LDF)6种不同施肥处理下双季稻径流氮磷含量和累积流失负荷的影响。结果表明,水稻基肥和追肥后,径流水中全氮、硝态氮、铵态氮、全磷和水溶性磷含量逐渐下降。HF处理双季稻季径流水中全氮、铵态氮、硝态氮平均含量最高,分别为5.91,3.65,0.82 mg/L。相比HF处理,有机物料替代20%氮肥处理能够降低径流水中全氮、铵态氮、硝态氮的平均含量,其中以DF处理下降幅度最大,分别下降1.18,0.71,0.14 mg/L;除DF处理外,有机物料替代20%氮肥能够增加径流水...

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,NO_3~-,NH_4~+,total P and water...