福安市耕地土壤肥力状况及改良途径

Status of Soil Fertility of Arable Land in Fu'an City and Improved Approaches

通过对福安市耕地具有代表性的3205个土壤样品的分析测定,结果表明:福安市耕地有机质含量普遍较高,处于较丰富状态;碱解氮中等水平;有效磷总体属于中上水平,但分布十分不平衡,其含量高低差异较大;速效钾普遍缺乏,处于低水平状态;土壤有效硼、交换性镁处于缺乏状态;交换性钙、有效硫属于中等水平;有效锌较为丰富。土壤pH值偏低,呈酸化趋势。阳离子代换量均值7.8 mg/kg,土壤保肥供肥能力较弱。并根据调查结果,提出了福安耕地土壤改良及培肥的应对措施。

The representative 3205 soil samples of arable land in Fu＇an city were determined and analyzed. The results showed that the organic matter content was ordinarily high and rich ; the alkali - hydrolyzable nitrogen content was at medium level ; the available phosphorus content was at medium and high level as a whole, but its distribution was very uneven, its changeable range was large; the available potassium content was ordinarily lack and at low level; the available boron and exchangeable magnesium content was all in the status of absence; the exchangeable calcium and available sulfur content was at middle level; the available zinc content was rich. The soil pH-value was low. The average amount of cation substitution was 7.8 mg/kg, the soil had weak ability of protecting and supplying fertilizer. According to the survey results, the author proposed the corresponding measures for the improvement and enhancement of soil fertility of arable land in Fu＇ an city.