摘要
本文通过测定上海市浦东新区主要公路绿化带施肥前后的土壤性状,分析了施肥前后土壤理化性质变化特征。结果表明,施肥对土壤p H值、EC值影响不明显,有机质含量下降了9.5%;对有效磷、速效钾、全氮影响较大,其中,有效磷增加明显,速效钾平均提高了三分之一,全氮下降明显,最大幅度达到83.08%。因此,必须要基于土壤理化性质和养分含量分析,有针对性的施用有机肥和复合肥,以提升土壤改良效果,满足园林植物的生长需要,做好绿化科学养护工作。
In order to study the soil improvement of roadside greenbeltsof Pudong in Shanghai, the variation of soil nutrition and soil physical and chemical properties before and after fertilization was analyzed.The results showed that fertilization had little effect on soil p H and EC value, and the organic matter of soil was decreased 9.5% after 10 months. Meanwhile, available P, available K and total nitrogen was significantly effected, among this, available P was increased significantly and available K was increased one-third, but total nitrogen was significantly decreased and the largest reduction was about 83.08%.Therefore, organic or compound fertilizers application should be targeted on the basis of the analysis of soil properties to improve the quality of soil improvement.Only then can we ensure the need of garden plants growing and the scientific maintenance of roadside greenbelts.
关键词
公路绿化带
土壤改良
土壤理化性质
土壤养分
roadside greenbelts
soil improvement
soil physical and chemical properties
soil nutrition
