期刊论文

Effects of different fertilization models on runoff loss of nitrogen and phosphorus in early rice paddy fields

中文

农业现代化研究

1000-0275

2021

42

04

776-784

10.13872/j.1000-0275.2021.0078

2016YFD0201200:国家重点研发计划 19A219:湖南省教育厅重点项目 SYL201802004:湖南农业大学双一流建设项目

本校为第一机构

为探究湖南双季稻区早稻季防控稻田氮、磷养分流失污染的施肥模式,通过田间试验,设置了不施氮磷肥处理(CK)和常规施肥(CF)、有机肥替代(OM)、控释肥减施(CRF)、绿肥还田(GM)4种施肥模式,研究了不同施肥模式对稻田氮、磷养分径流流失的影响.结果表明:相较于常规施肥模式,有机肥替代、绿肥还田和控释肥减施模式稻田总氮径流流失量分别减少了12.80％、16.62％、28.55％,各施肥处理早稻总氮素流失率大小表现为:常规施肥>有机肥替代>绿肥还田>控释肥减施,氮素流失形态主要以可溶性氮为主,占流失总氮的80.48％～91.96％,可溶性氮中以铵态氮为主.控释肥减施和绿肥还田模式均能减少稻田磷素径流损失量,与...

In order to explore the characteristics of nitrogen and phosphorus nutrient runoff loss in double-cropping paddy fields in Hunan Province, different fertilization models were conducted in the early rice season. Five modes, no nitrogen and phosphorus fertilizer treatment (CK), conventional fertilization(CF), replacement of organic manure(OM), reduced application of controlled-release fertilizer(CRF), and green manure return (GM) were applied, and the effects on loss of nitrogen and phosphorus nutrients were analyzed. The results showed that compared with the conventional fertilization mode, the...