Abstract:

Experimental study and evaluation of the status of soil nutrients is proposed for this area of agricultural land to grow rice, wheat and corn rational fertilization. Experiment with nitrogen, phosphorus and potassium as the experimental factor, set up a no fertilizer (N0P0K0), nitrogen (N0P2K2), non-phosphorus (N2P0K2), potassium (N2P2K0), N, P and K (N2P2K2) five treatment, repeated three times, randomized block arrangement. The results showed that, the area of agricultural land to grow rice, the contribution rate of fertilizer on rice yield was 36.5%, of which the contribution rate of nitrogen fertilizer on rice yield was 11.9%, the contribution rate of phosphate fertilizer on rice yield was 10.5%, potash fertilizer on rice yield. The area of agricultural land planted wheat, the contribution rate of fertilizer on wheat yield was 56.3%, of which the contribution rate of nitrogen fertilizer on wheat yield was 28.0%, the contribution rate of phosphate fertilizer on wheat yield was 9.2%, potash fertilizer on wheat yield, the contribution rate was 1.2%. The area of agricultural land to grow corn (interplanting), the contribution rate of fertilizer on corn yield was 62.4%, of which the contribution rate of nitrogen fertilizer on corn yield was 53.2%, the contribution rate of phosphate fertilizer on maize yield was 15.5%, the contribution rate of potassium fertilizer on corn yield was 6.9%. In a word, the cultivation of crops of the region had a larger dependence on chemical fertilizer, chemical fertilizer significantly increased yield, which played a major role of nitrogen fertilizer on crop yield, the smaller the impact of phosphate fertilizer on crop yield. Little effect on the output of potash fertilizer on crops could be applied not less.