【作者】 马茂亭； 安志装； 邹国元； 杜连凤； 刘宝存； 赵丽平； 赵同科；

【Author】 Ma Maoting,An Zhizhuang,Zou Guoyuan,Du Lianfeng,Liu Baocun,Zhao Liping,Zhao Tongke (Institute of Plant Nutrition and Resources,Beijing Academy of Agricultural and Forestry Sciences,Beijing 100097)

【机构】 北京市农林科学院植物营养与资源研究所；

【摘要】 本文通过对北京市延庆地区农民常规施肥模式进行优化,研究其对土壤全氮、硝态氮和铵态氮含量影响;结果表明:优化施肥处理（化学氮肥用量为120 kg N/hm²,磷肥用量为90 kg P₂O₅/hm²,钾肥用量为135kgK₂O/hm²,有机肥用量为7500 kg/hm²）具有提高土壤全氮含量的趋势,优化施肥处理与常规施肥处理相比,能有效降低土壤硝态氮含量和阻控其往下淋溶,研究还发现土壤铵态氮含量与施氮量和时间变化具有一定的关系。更多还原

【Abstract】 s According to the analysis of conventional fertilization patterns of farmers in Beijing’s Yanqing,we studied contents of total N,nitrate and ammonium N in soil.The results showed that optimized fertilization（120 kg N/hm²,90 kg P₂O₅/hm² and 135 kg K₂O/hm² plus 7500 kg organic fertilizer/hm²） may improve soil total nitrogen content.Optimized fertilization can reduce the nitrate nitrogen content in soil and prevent from its downward leaching than conventional fertilization.In addition, there is a relationship among soil ammonium N in soil and different nitrogen applications and time.更多还原