Hunter A H.Laboratory and greenhouse techniques for nutri-ent survey to determine the soil amendments required for op-timum plant growth[R].Agro service international,Florida,USA,1984.
Galantini J,Rosell R.Long-term fertilization effects on soil organic matter quality and dynamics under different produc-tion systems in semiarid Pampean soils[J].Soil and Tillage Research,2006,87:72-79.
Stevens W B,Hoeft R G,Mulvaney R L.Fate of nitrogen-15 in a long-term nitrogen rate study:Ⅰ.interactions with soil nitrogen[J].Agron J,2005,97:1037-1045.
Shaimukhametov M SH,Mamadaliev G H.The effect of long-tern fertilization on the potassium status and mineralogy of clay particles in typical Serozem[J].Eurasian Soft Seienes,2003,36:994-1002
Richard B F,John A N,Roger A E,et al.long-term effects of sustained beef feedlot manure application on soil nutrients,corn silage yield,and nutrient uptake[J].Environ Qual,2005,34:1672-1681.
[22]
Daniel de B R J,Michael H,Callaham M A,et al.Long-term soil experiments:keys to managing earth''s rapidly changing e-cosystems[J].Soil Sci Soc Am,2007,71:266-279.
Tinglu Fan,Stewart B A,William A P,et al.Long-term fertil-izer and water availability effects on cereal yield and soft chemical properties in Northwest China[J].Soil Sci Soc Am,2005,69:842-855.