摘要
对南亚热带巨尾桉-杉木、巨尾桉-牛肋巴、巨尾桉-厚荚相思等不同混交类型林分的生长量及林地土壤肥力的研究,结果表明:与优势树种纯林相比,混交林提高了林地生产力,同时具有良好的改良土壤作用。混交林的土壤容重均比巨尾桉纯林(对照)小,有机质、全氮、全磷、速效磷和速效钾等矿质养分含量均大于巨尾桉纯林,改土强度大小依次为巨尾桉-牛肋巴>巨尾桉-厚荚相思>巨尾桉-杉木,因此,适当营造桉树混交林是科学经营桉树的有效措施之一。
Growth gion, including E. amount and soil fertility of different mixed forest had been studied in south subtropical regrandis x E. urophylla mixed Cunninghamia lanceolata, Dalbergia obtusifolia and Acacia crassicarpa etc. The results showed that ： compared to superior tree species of pure forest, the mixed forest could increase woodland productivity and improve soil. The bulk density of soil in all mixed forest was less than the pure E. grandis x E. urophylla forest, but the content of mineral nutrient such as organic matter substance, total nitrogen, total phosphorus, rapidly available phosphorus and rapidly available potassium was more than the pure E. grandis x E. urophylla forest. The sequence on the ability of soil improvement was E. grandis x E. urophylla - Dalbergia obtusifolia mixed forest 〉 E. grandis x E. urophylla - Acacia crassicarpa mixed forest 〉 E. grandis x E. urophylla - Cunninghamia lanceolata mixed forest respectively. As a result, to build properly mixed forest was one of effective measures to manage eucalyptus plantation scientifically.
出处
《桉树科技》
2006年第1期1-5,共5页
Eucalypt Science & Technology
基金
福建省林业厅闽林(2002)科10号"桉树可持续经营技术研究"课题
关键词
桉树
混交林
生物量
土壤肥力
eucalyptus
mixed forest
biomass
soil fertility
