龙海市耕地土壤养分现状及变化趋势

Brief discussion on present status and variation trend of soil nutrient in farmland of Longhai City

对龙海市耕地土壤取样分析,以了解耕地土壤肥力状况,并与全国第2次土壤普查数据比较,分析龙海市耕地土壤养分变化趋势:土壤p H值下降了0.2个单位,整体呈酸化趋势;全氮含量增加47.8%,水解氮含量增加9.5%;有效磷含量增加11.3倍;速效钾含量增加82.5%;有机质含量增加39.1%,并提出科学施肥建议。

In order to investigate the soil fertility status of farmland in Longhai,soil samples were taken and the variation trend of soil nutrients was analyzed compared with the data of the second soil survey data. The results showed that the soil generally appeared to be acidification trend with the p H value dropped by 0. 2 units,the content of total nitrogen,hydrolyze nitrogen,available potassium and organic matter increased by 47. 8%,82. 5%,82. 5% and 39. 1% respectively,and the content of available phosphorus increased 11. 3 folds. According to these results,the scientific fertilization recommendations were also proposed.