论文部分内容阅读
1.根据土壤条件施用磷肥。一般情况下熟化程度高,有机质含量多的土壤,有效磷含量也较高,施用磷肥效果不显著,利用率低;熟化程度低、有机质含量少的土壤,有效磷含量也较少,施用磷肥效果明显,利用率高。因此应根据土壤的缺磷程度合理施用磷肥,如在有机质不足的瘠薄瘦地施足磷肥,可显著提高利用率,获得明显的增产效果。不同的土壤应使用性质不
1. Apply phosphate fertilizer to soil conditions. Under normal circumstances, the soil with high degree of maturation and organic matter content has higher effective P content, less effective application of P fertilizer and lower utilization rate. Soil with low degree of maturation and less organic matter has less effective phosphorus content. Obviously, the utilization rate is high. Therefore, phosphate fertilizer should be rationally applied according to the degree of phosphorus deficiency in the soil. If sufficient phosphate fertilizer is applied on barren and thin land with insufficient organic matter, the utilization rate can be significantly increased and a marked increase in yield can be achieved. Different soil should not use the nature of