摘要
水稻是我国重要的粮食作物之一,在水稻生产过程中由于施肥导致的大量氮磷元素随着地表径流等方式流入排水渠道中,造成地下水污染和水体富营养化。本文通过对稻田的农田退水情况进行取样检测,对农田退水的氮磷污染情况进行监测研究。结果表明,排水沟渠在水稻泡田期和秧苗移栽期总氮(TN)浓度最高,在泡田期、分蘖期和抽穗开花期总磷(TP)略高。
Rice is one of the most important food crops in China.During the growth of rice,a large amount of nitrogen and phosphorus caused by fertilizer application flow into the drainage channels,resulting in groundwater pollution and water eutrophication.This paper conducted sampling and testing on the drainage conditions of paddy fields and monitored the nitrogen and phosphorus pollution conditions of farmland drainage.Results showed that the total nitrogen(TN)concentration in the drainage ditch was highest in the rice field and the seedling transplanting stage,and slightly higher in the rice field,tillering stage and heading and flowering stage.
作者
李蔚然
于小彭
郝鹏
王紫
贺双梅
展广军
王康健
于艳青
LI Wei-ran;YU Xiao-peng;HAO Peng;WANG Zi;HE Shuang-mei;ZHAN Guang-jun;WANG Kang-jian;YU Yan-qing(Institute of Saline-alkali Land Use in Liaoning Province,Panjin Liaoning 124000)
出处
《现代农业科技》
2020年第8期195-196,共2页
Modern Agricultural Science and Technology
关键词
水稻
农田退水
氮磷污染
监测
rice
water receded from farmland
nitrogen and phosphorus pollution
monitoring
