不同施肥制度对肥料利用率的影响  

Effect of Different Fertilization System on Fertilizer Utilization Efficiency

作　　者：宇万太[1] 姜子绍[1] 赵鑫[1,2] 柳敏[1] 

机构地区：[1]中国科学院沈阳应用生态研究所,辽宁沈阳110016 [2]沈阳农业大学,辽宁沈阳110161

出　　处：《土壤通报》2009年第1期122-126,共5页Chinese Journal of Soil Science

基　　金：国家科技支撑计划课题“耕地地力提升与退化耕地修复关键技术研究”(2006BAD05B01);中国科学院知识创新项目(KZCX2-YW-407);中国科学院野外台站基金资助

摘　　要：通过17年的长期定位肥料试验,研究了不同施肥制度对肥料利用率的影响,以期为合理施肥提供理论依据。结果表明:N、P、K肥的当季利用率随施肥不同差异较大,施用有机肥的处理作物对N、P、K的利用率高于单施化肥的处理。P肥累积利用率在各个处理中均有明显的增加,表现出极好的残效;除单施N肥处理外,其他处理的N肥累计利用率均呈增加趋势;K肥的累计利用率在施用有机肥的处理上表现出明显的增加趋势,其他处理不明显。Based on a consecutive 17 years field trial, this paper was to explore the effects of different fertilization systems on the fertilizer utilization efficiency, in order to give guidance for application of fertilizers. The result indicated that there were differences in annual fertilizer utilization efficiency with different fertilization. Annual N,P and K fertilizer utilization efficiency were higher with manure than those without manure. There was a significant increase on accumulated P fertilizer utilization efficiency in each treatment, and there was a significant increasein accumulated N fertilizer utilization efficiency in each treatment, expect for treatment of N fertilizer application. There was a significant increase on accumulated K fertilizer utilization efficiency with manure application, and no difference in other treatments.

关 键 词：N肥 P肥 K肥 肥料利用率 

分 类 号：S147.5[农业科学—肥料学]