福建省土壤定位监测点养分变化规律及平衡分析  

Nutrient evolution tendency at some location monitored fields in Fujian Province

作　　者：周琼华[1] 

机构地区：[1]福建省农业厅土肥站,福建福州350003

出　　处：《福建农业学报》2006年第1期66-71,共6页Fujian Journal of Agricultural Sciences

摘　　要：通过对福建省4个国家级、12个省级耕地土壤长期定位监测点7 a(1998-2004)监测,福建省主要耕地土壤的养分动态变化趋势为:有机质、全氮含量略有上升,有效磷上升较明显,碱解氮均有下降,水田土壤速效钾下降,旱地速效钾微升,所有升降都未达显著程度。通过对监测点农户施肥情况调查及养分平衡分析,认为农田氮磷投入盈余、钾亏缺,并提出今后稳氮、控磷、增钾的施肥对策。The nutrient contents of the surface soils at 16 cropped fields, among which 12 were established by the province and 4 by the state, were monitored during 1998-2004 in order to reveal the nutrient evolution tendency of the cropped fields in Fujian Province. The content of total N and organic matter in these soils increased slightly, the content of available P increased evidently whereas that of the alkali-hydrolyzable N decreased. The content of available K in paddy rice fields decreased while that cant differences. The results indicated that N and P Province. in uplands increased slightly. All the evolution had no signififertilizers were generally applied in excessive amount in Fujian

关 键 词：耕地土壤 定位监测 土壤养分 

分 类 号：S151.93[农业科学—土壤学]