新民市耕地土壤养分变化分析

利用现有测土配方施肥项目的成果数据,对新民市土壤有机质、有效磷、有效钾养分变化情况进行分析研究。结果表明,土壤有机质含量1%~2%是新民地区绝大多数土壤的基本特征,其比例下降,表明土壤有机质含量向降低方向发展,反映出土壤肥力有退化的趋势。低磷土壤比例减少,高磷土壤比例增加,都预示着土壤有效磷含量增加,高磷土壤面积扩大。总的趋势是土壤有效磷含量增高,土壤有效钾含量下降。

Analysis of Soil Nutrients Changes in Xinmin City

Using the current result data of soil testing and formula fertilization project,the change of soil organic matter,available phosphorus, available potassium in Xinmin city were analyzed. The results showed that the basic characteristic of most soil in Xinmin City was the content of soil organic matter counted for 1% to 2%,and the proportion declined,indicating the reducing development direction of soil organic matter content and the degradation trend of soil fertility. The proportion of low phosphorus soil decreased and the proportion of high phosphorus soil increased,both indicating the soil available phosphorus content increased. The general trend was the soil available phosphorus content increased and soil available potassium decreased.