春小麦调亏灌溉对土壤氮磷钾的影响

Effects of Regulated Deficit Irrigation on Soil Nitrogen,Phosphorus and Potassium Nutrients in Spring Wheat Field

对河西绿洲灌区春小麦调亏灌溉2年后的土壤碱解氮和全氮、速效磷和全磷、速效钾和全钾进行了研究,并对土壤养分年际间的差异进行了分析,旨在为该区春小麦调亏灌溉对土壤氮磷钾养分的影响研究提供一些可靠的信息。

The soil alkai-hydrolyzable nitrogen （SAN） and total nitrogen（STN）, available phosphorus （SAP） and total phosphorus（STP）,available potassium （SAK） and total potassium（STK）in spring wheat field after two years of regulated deficit irrigation （RDI） were studied in Hexi oasis irrigation region, as well as the differences analysis in soil nutrients between 2003 and 2004 experimental years, aiming at providing some useful gist for the study on effects of RDI on soil nutrients in spring wheat field in this region.