soil NO3--N 第1页

Effects of tillage practices on nitrogen accumulation and translocation in winter wheat and NO3--N content in soil Effects of combined application of organic manure and chemical fertilizers on soil nitrogen availability and movement under water and fertilizer saving management in cucumbertomato double cropping system Temporal and spatial variations of soil NO3--N in Orychophragmus violaceus/spring maize rotation system in North China. Effect of postponing N application on soil N supply, plant N uptake and utilization in winter wheat