期刊论文

Effects of one-time deep application of available nitrogen and slow and controlled-release nitrogen on rice yield,nitrogen use efficiency,and nitrogen loss

中文

农业环境科学学报

1672-2043

2021

40

09

1923-1934

10.11654/jaes.2021-0290

国家重点研发计划项目（2018YFD0800501）； 湖南省教育厅创新平台开放基金项目（19K046）； 湖南省自然科学基金青年项目（2019JJ50233）～～；

本校为第一机构

为探究在机插同步一次性侧深施肥作业方式下的速效氮与缓控释氮合理配比,保证水稻产量,提高肥料利用率,降低氮素流失,实现水稻的清洁化生产,采用田间小区试验,设置7个处理,分别为CK:不施肥,T1:农民习惯施肥(施N量早稻150 kg·hm-2,晚稻165 kg·hm-2),T2～T6:机插同步一次性侧深施肥(施N量早稻105 kg·hm-2,晚稻132 kg·hm-2),其中T2～T6处理的缓控释氮分别占总氮的0%、10%、20%、30%、40%。结果表明:在早稻季,各处理间产量差异不显著;晚稻季,T3～T5处理的产量间差异不显著,T6处理产量显著低于T4和T5处理;与T1处理相比,T2～T6处理的氮肥吸收利用率提高了8.08～14.10（早稻）个和6.68～26.61（晚稻...

The purpose of this study was to explore the reasonable ratio of available nitrogen to slow/controlled-release nitrogen under the one-time side deep fertilization mode of machine insertion synchronization to improve the fertilizer utilization rate,reduce nitrogen loss,and realize clean production of rice while obtaining a stable rice yield.A field plot experiment was conducted with the seven following treatments,CK:no fertilization;T1:conventional fertilization [N rate:150 kg·hm~(-2)(early rice),165 kg·hm~(-2)(late rice)];and T2~T6:simultaneo...