摘要
在保护地菜田条件下,以水果苤蓝为供试作物,研究优化施肥、C/N调控、种植填闲作物等3种不同措施对土壤硝态氮累积与淋溶的影响。结果表明,种植当季,优化施肥和C/N调控处理均可有效阻控硝态氮淋溶。综合考虑水果苤蓝生长期和填闲/休闲期,3种措施阻控硝态氮淋溶的强度,由强到弱依次为:种植填闲作物>优化施肥>C/N调控。建议控制施肥量的同时,采用合理的管理方式,多方面阻控硝态氮的累积与淋溶,保护环境安全。
In facility vegetable field,an experiment with kohlrabi for selected crops had been carried out,to research the effect of three different measures,which were fertilization optimization,C/N regulation and catch crops planting（sweet corn）,on the nitrate nitrogen accumulation and leaching in soil.The results indicated that fertilization optimization and C/N regulation were effective measures to reduce and control nitrate leaching in the kohlrabi planting season.The effects on the nitrate nitrogen leaching resistance were as follows： Catch crops plantingfertilization optimizationC/N regulation.It was suggested that the rate of fertilizer application and the rational management modes should be comprehensively adopted to reduce nitrate accumulation and leaching and protect the environment from pollution.
出处
《水土保持学报》
CSCD
北大核心
2011年第3期59-62,67,共5页
Journal of Soil and Water Conservation
基金
公益性行业(农业)科研专项(20100314)
农业部资助项目(WX-Z07-01)
关键词
硝酸盐
淋溶
保护地
氮肥
填闲
nitrate
leaching
facility vegetable field
nitrogen fertilizer
catch crop
