吉林省不同肥力黑土玉米平衡施肥研究  

Study on the Balanced Fertilization for Maize on the Black Soil with Different Fertilities in Jilin Province

作　　者：石玉海[1] 许东恒[1] 王立春[1] 

机构地区：[1]吉林省农业科学院,长春130033

出　　处：《玉米科学》2010年第5期108-113,共6页Journal of Maize Sciences

基　　金：中加合作项目"平衡施肥示范计划"(IPNI);国家科技支撑计划"高效施肥关键技术研究与示范"(2008BADA4B06)

摘　　要：在吉林省黑土区3种不同肥力土壤上研究平衡施肥效果。结果表明,平衡施肥对玉米具有较好的增产增收效果,其增产顺序为低肥力黑土>中肥力黑土>高肥力黑土。高肥力黑土施肥适宜用量分别为N145kg/hm2、P2O546kg/hm2、K2O90kg/hm2;中肥力黑土施肥适宜用量分别为N90kg/hm2、P2O569kg/hm2、K2O60kg/hm2;低肥力黑土施肥适宜用量分别为N200kg/hm2、P2O592kg/hm2、K2O30kg/hm2。氮肥对玉米的增产增收效果最好,是玉米高产的主要限制因子。玉米子粒吸收的养分随施肥量的增加而增加,肥料利用率随施肥量的增加而降低。By the study on balanced fertilization for maize on the black soil of different fertility,the results showed that balanced fertilization had a good yield and income increasing effect whose yield and income increasing order was low fertility black soil>middle fertility black soil>high fertility black soil.The optimum application rates for N,P2O5 and K2O was 145,46,90 kg/ha,respectively on the high fertility black soil.The optimum application rates for N,P2O5 and K2O was 90,69,60 kg/ha,respectively on t...

关 键 词：玉米 黑土 平衡施肥 吉林省 

分 类 号：S51[农业科学—作物学]