The Dynamic Changes of NO3-_N,NH4+_N and P in Soil on Conditions of Water Situation,Different Amounts and Depths of Papplied
LIU Wen-ju, LI Mei-ru, ZHAO Quan-li, LI Ke-jiang, ZHANG Xi-ke, LIU Wei
ACTA AGRICULTURAE BOREALI-SINICA . 2006, (S2): 46 -50 .  DOI: 10.3321/j.issn:1000-7091.2006.z2.011