丽水地区油茶林土壤养分含量变化研究

Study on Soil Nutrient Contents Variation of Camellia oleifera Stand in Lishui

对丽水地区的油茶林土壤养分变化状况进行研究,结果表明:丽水地区油茶林土壤pH值较为稳定,为弱变异性。有机质、碱解氮、有效磷、速效钾达到中等变异性程度;不同土壤层次的养分含量不同,表层养分含量最高,向下表现出逐渐降低的趋势;不同抚育措施对油茶林土壤养分含量有一定的影响,土壤有机质、碱解氮、有效磷和速效钾的含量,垦复林地>劈山林地>未抚育林地,但垦复和劈山对土壤pH值没有显著的影响。

Study was conducted on soil nulrient contents variation of Camellia oleifera stands in Lishui, Zhejiang province. The result showed that soil pH value was stable, week variability, but organic matter, alkali-hydrolyzable nitrogen, available phosphorus, available potassium were middle variability. The surface layer had the highest contents of nutrient, and decreased gradually to deeper layers. Different management measures had impact on soil nutrient contents. The contents of organic matter, alkali-hydrolyzable nitrogen, available phosphorus, available potassium were ordered by reclamation stands〉cleaning ones〉without management ones. Reclamation end cleaning had no effect on soil pH value.