摘要
以崂山水库周边农用地为研究对象,在2019年7月至2020年8月期间收集了9块种植不同作物试验地的降雨后地表径流,对其中的氨态氮(NH_(4)^(+)-N)、硝态氮(NO_(3)^(-)-N)和溶解性磷(SP)输出浓度和流失量进行分析核算,同时考察了施用化肥和控释肥对氮磷流失的影响。结果表明:不同作物类型的降雨径流中氮磷流失差别较大;施用控释肥料较普通肥料可以减少17.9%的氨态氮、16.4%的硝态氮和18.0%的溶解性磷输出。
Surface runoff of 9 test sites for different crops were collected in the farmland around Lushan Reservoir from July 2019 to August 2020.The concentration and the output loss of the ammonia nitrogen(NH_(4)^(+)-N),nitrate ni⁃trogen(NO_(3)^(-)-N)and dissolved phosphorus(DP)were analyzed and calculated,respectively,and the different effect of chemical fertilizer and controlled release fertilizer on nitrogen and phosphorus loss was further carried out.Results showed that the nitrogen and phosphorus loss varied greatly in the rainfall runoff of different crop types,and con⁃trolled release fertilizer could reduce ammonia nitrogen,nitrate nitrogen and dissolved phosphorus output by 17.9%,16.4%and 18.0%,respectively,compared with chemical fertilizer.
作者
王帅
刁玲玲
WANG Shuai(Chengyang Substation of Qingdao Municipal Bureau of Ecology and Environment,Qingdao 266109,China)
出处
《安徽农学通报》
2021年第18期161-164,176,共5页
Anhui Agricultural Science Bulletin
关键词
降雨
地表径流
氮磷
控释肥
Rainfall
Surface runoff
Nitrogen and phosphorus
Controlled release fertilizer
