基于污泥处置副产物制备新型肥料对桉树人工林生产的研究

Study on Eucalyptus Plantation Development Following Application of Fertilizer Based on Sludge Disposal By-products

本文基于污泥处置副产物,配合矿质营养元素氮、磷、钾、微量元素等,制备新型桉树有机无机肥料,重点研究新型桉树肥料对桉树林地生产及土壤养分的影响。研究结果表明:(1)利用污泥填料制备桉树有机无机专用肥可有效提高无机养分的利用率,对桉树树高、胸径影响显著。(2)当新型肥料的有机质含量增加至20%,可提高养分利用率,促进桉树的生长,实际生产可降低专用肥料的制作成本。(3)增加微量元素对冬后桉树恢复生长具有显著的效果。

A new type of organic-inorganic fertilizer for Eucalyptus plantations was prepared using by-products of sludge disposal,combined with inorganic nitrogen,phosphorus,potassium and trace elements.The effects of this new fertilizer on both the growth of Eucalyptus plantations and soil nutrients were studied and the results showed:(1)using a sludge filler to prepare fertilizer comprising a combination of organic and inorganic raw materials can effectively improve the utilization rate of inorganic nutrients with significant impacts on subsequent height and DBH growth of Eucalyptus.(2)When the organic matter in the compound fertilizer is increased to 20%,it can improve the nutrient utilization rate and promote the growth of Eucalyptus.(3)Higher levels of microelements have obvious effects on growth of Eucalyptus after winter.