摘要
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。
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.
出处
《现代农业科技》
2014年第7期244-245,共2页
Modern Agricultural Science and Technology
关键词
耕地
土壤养分
有机质
有效磷
有效钾
变化
辽宁新民
farmland
soil nutrient
organic matter
available phosphorus
available potassium
change
Xinmin Liaoning
