印度紫檀凋落物与人工施肥对林下金花茶生长及土壤理化性质的影响

Effects of Pterocarpus indicus Litter and Fertilization on Growth of Camellia nitidissima and Soil Physical and Chemical Properties

为探究印度紫檀(Pterocarpus indicus)凋落物对林下种植金花茶(Camellia nitidissima)生长以及土壤理化性质的影响,开展了印度紫檀凋落物与施肥的对比试验。结果表明,与对照组相比,施肥和凋落物对金花茶树高、地径、冠幅、花朵数量和活性成分均有显著影响。施用复合肥+复合微生物肥的效果最好,凋落物处理的金花茶单花质量最大。凋落物处理的土壤物理性质在0~20和20~40 cm土层最好。运用隶属函数法可得复合肥+复合微生物肥效果最好,其次是凋落物处理。印度紫檀凋落物分解产生的养分能显著促进林下金花茶生长和开花。本研究可为林下栽培金花茶免施肥复合经营方式提供一种新的理论参考。

A comparative experiment between Pterocarpus indicus litter and fertilization was carried out to explore effects of P.indicus litter on growth of Camellia nitidissima and soil physical and chemical properties.Results showed that compared with control group,fertilization and P.indicus litter had significant effect on tree height,ground diameter,crown width,number of flowers and active ingredients of C.nitidissima.Compound fertilizer+compound microbial fertilizer had the best effect,and quality of single flower in C.nitidissima litter treatment was the largest.Soil physical properties in 0-20 and 20-40 cm soil layer in litter treatment were the best.Membership function method showed that compound fertilizer+compound microbial fertilizer ranked the first,and followed by litter treatment.Nutrients which produced by P.indicus litter decomposition could significantly promoted growth and flowering of C.nitidissima.This study could provide a new reference for non-fertilization management model of planting C.nitidissima under forest.