论文部分内容阅读
近几年来,遵化市农民普遍反映,化肥肥效有所下降,如何提高化肥肥效,实现增产增收,是当前急需解决的课题。据遵化市农业土肥站对市内化肥施用情况和土壤养分状态调查分析显示:化肥施用量呈逐年上升趋势,而有机肥施用量则呈逐年下降趋势。特别是氮素化肥施用量过大,由于没能做到氮、磷、钾合理搭配,致使土壤板结,有机质含量下降,化肥利用率降低,以致出现施肥多但不增产的现象。那么怎样才能做到科学合理施用化肥增效呢?一般情况下应注意以下三点:
In recent years, Zunhua farmers generally reflect the decline in fertilizer efficiency, how to improve fertilizer efficiency, increase production and income is the urgent problem to be solved. According to Zunhua Agricultural Fertilizer Station on the city of fertilizer application and soil nutrient status survey showed that: the amount of chemical fertilizer showed an upward trend year by year, while the application rate of organic fertilizer showed a downward trend year by year. In particular, excessive application of nitrogen fertilizers resulted in the compaction of nitrogen, phosphorus and potassium, resulting in the compaction of soil, the decrease of organic matter content and the decrease of fertilizer utilization rate, resulting in the phenomenon of more fertilization but no increase of yield. So how can we achieve scientific and rational use of fertilizer efficiency? Under normal circumstances should pay attention to the following three points: