2Liu X Y,HeP,Jin JYetal.Yieldgaps,soilindigenousnutrientsupply,and nutrient use efficiency of wheat in China[J].Agron.J.2011,103:1452-1463.
3He P,Li S T,Jin J Y et al.Performance of an optimized nutrientmanagement system for double-cropped wheat-maize rotations inNorth-Central China[J].Agron.J.,2009,101:1489-1496.
4Ju X T,Kou C L,Zhang F S et al.Nitrogen balance and ground-water nitrate contamination:Comparison among three intensivecropping systems on the North China Plain[J].Environ.Poll.2006,143:117-125.
5Sonawane S S,Sonar K R.Application of mitscherlic-brayequation for fertilizer use in peari millet on vertisol[J].J.Ind.Soc.Soil Sci.,1995,43(2):276-277.
6Wolf D W,Henderson D W,Hsiao T C et al.Interactive waterand nitrogen effects on senescence of maize.Ⅱ.Photosyntheticdecline and longevity of individual leaves[J].Agron.J.,1988,80:865-870.
7中国标准出版社第一编辑室.中国农业标准汇编(土壤肥料卷)[M].北京:中国标准出版社,1998.
8Witt C,Pasuquin J M,Pampolino M F et al.A manual for thedevelopment and participatory evaluation of site-specific nutrientmanagement for maize in tropical,favorable environments[J].Int.Plant Nutr.Inst.,2009.
9Janssen B H,Guiking F C T,Vander E D et al.A system forquantitative evaluation of the fertility of tropical soils(QUEFTS)[J].Geoderma,1990,46,299-318.
10Satyanarayana T,MajumdarM,BirdarDP.New approachesandtools for site-specific nutrient management with reference topotassium[J].Karnataka J.Agric.Sci.,2011,24(1):86-90.
