追肥方位和追肥量对按树人工林生长的影响

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中图分类号 S792.39 文献标志码A 文章编号 1007-7731（2026）07-0058-05

DO1号 10.16377/j.cnki.issn1007-7731.2026.07.015

Effects of fertilizer application position and fertilizer application amount on the growth ofEucalyptusrobusta

Mo Kairen Huang Fulong Huang Yaoxiong Jiang Jiangang Zheng ChunniHuang Anbang Lin Chaosheng （Qinlian State-owned Forest Farm of Guangxi Zhuang Autonomous Region， Qinzhou 535ooo， China）

AbstractTooptimize thefertilization techniqueforEucalyptus robustaand enhance theeficiencyoffertilizer nutrientutilizationand growth performance，this studyconducted atwo-factor experimentto investigate the ffects of diffrent fertilizationpositions （3Ocmaboveand 3Ocm below theplant，namelyEandFtreatments）anddiferent application amounts offertilizer（K，A，B，and Ctreatments with aplicationamountsof O，0.50，O.75，and1.00 kg per plantrespectively）onthe growthofEucalyptus robusta.Thechestdiameter，tree height，single treevolume，andunitarea volumeof eucalyptus trees in each treatment were observed continuouslyfor 5 years.Theresults showed that the diameter atbreast height，tree height，and single-tree volume of 5- year-old Eucalyptusrobusta fertilizedbelowtheplant were 6.8% ， 6.4% ，and 12.7% higher than those fertilized above the plant， respectively.As the application amount of fertilizer increased，thegrowthofEucalyptus robustashowedan increasing trend.The5-year-old single-tree volume in theC treatment was the largest （0.107m3 ），whichwas 59.7% higher than thatof theK treatment.However，thedifference in tree growth between the B treatment and the C treatment was only 10.3% ，and the former had a higher nutrient utilizatio effciency.Insummary，itisrecommendedtousethecombinationofbotom-rowfertilizationundertheplant and O.75 kg/plant fertilizer.The 5-year-old single-tree volume reached 0.120m3 ，and the unit area volume was （2 153.5m3/hm2 . This study provides a reference for precise fertilization of Eucalyptus robusta.

KeywordsEucalyptus urophylla; fertilizer application position; fertilizer application amount; growth effect

桉树（Eucalyptusrobusta）作为南方地区重要的速生商品林树种之一，具有生长快、轮伐期短、木材用途广泛等特点，在保障木材供给、促进区域经济发展中发挥关键作用。（剩余5783字）