一、土壤酸碱度对花卉的影响:土壤酸碱度用pH值表示。根据中国科学院南京土壤研究所确定,把上壤分为五级:pH<5.0为强酸性;pH5.0～6.5为酸性;pH6.5～7.5为中性;pH7.5～8.5为碱性;pH>8.5为强碱性。土壤酸碱度对植物最主要的影响是矿质盐分的溶解度,从而影响养分的有效性。矿质养分中氮(N)、磷(P)、钾(K)、硫(S)、钙(Ca)、镁(Mg)、铁(Fe)、锰(Mn)、钼(Mo)、硼(B)、铜(Cu)、 First, the impact of soil pH on the flowers: pH value of soil pH. According to the Nanjing Institute of Soil Science, Chinese Academy of Sciences determined that the soil is divided into five levels: pH <5.0 is strongly acidic; pH5.0 ~ 6.5 is acidic; pH6.5 ~ 7.5 is neutral; pH7.5 ~ 8.5 is alkaline; pH> 8.5 is strongly alkaline. The most important effect of soil pH on plants is the solubility of mineral salts, thus affecting the effectiveness of nutrients. The contents of nitrogen, phosphorus, potassium, sulfur, calcium, magnesium, iron, manganese, molybdenum, boron, B), copper (Cu),