果园土壤中、微量元素含量及其与pH值、有机质含量的关系

Medium and Trace Elements Content and Its Relationship with pH Value,Organic Matter Content in Orchard Soil

为了解古田县果园土壤钙、镁、硼、锌含量状况,探讨了果园土壤钙、镁、硼、锌含量及其与土壤有机质含量、pH值之间的关系。结果表明,古田县果园土壤有机质含量为25.4 g/kg,交换性镁含量为422.1 mg/kg,总体均处于丰富水平;交换性钙含量为226.1 mg/kg,有效硼含量为0.15 mg/kg,均处于严重缺乏水平;有效锌含量为1.22 mg/kg,总体处于适宜及其以下水平;土壤pH值为5.1,处于酸性水平。土壤中交换性钙、镁含量及有效硼、锌含量均与土壤有机质含量、pH值呈显著或极显著正相关。因此,增施有机肥、改良土壤酸度是改善供试果园土壤钙、镁、硼、锌养分供应的主要措施。

In order to understand the soil Ca,Mg,B,Zn contents in orchard of Gutian county,the relation-ships between Ca, Mg, B, Zn contents and organic matter content, pH value were studied. The results showed that soil organic matter content was 25. 4 g/kg,exchangeable Mg content was 422. 1 mg/kg,which were all in rich level;exchangeable Ca content was 226. 1 mg/ kg,effective B content was 0. 15 mg/kg, which were all in a serious lack level;effective Zn content was 1. 22 mg/kg,which overall was in the ap-propriate level and below;soil pH value was 5. 1,which was in the acidic level. Soil exchangeable Ca,Mg and effective B,Zn contents were positively correlated with soil organic matter content,pH value. There-fore,the application of organic fertilizer and improvement of soil acidity were the main improvement mea-sures for supply of Ca,Mg,B,Zn.