Studies on the Grassland Management in Late-Autumn and Early-Spring VII. Effect of N application time and N fertilizer kind in early spring on grass growth, yield and nutritive value in orchardgrass meadow.
This field experiment was carried out to determine the effects of nitrogen(N) application time (March 30, April 9 and April 19) and N fertilizer kind (urea and ammonium sulfate) in early spring on the grass growth, dry matter (DM) yield, crude protein (CP