基质理化性质对黄檗幼苗生物量及生理指标的影响  

Effects of Substrate Physicochemical Properties on Biomass and Physiological Indexes of Phellodendron amurense Seedlings

作　　者：赵杰 赵秋玲 沙红 张晶 ZHAO Jie;ZHAO Qiuling;SHA Hong;ZHANG Jing(Wushan County Bureau of Forestry and Grassland,Wushan 741300,Gansu;Xiaolongshan Forestry Research Institute of Gansu Province,Tianshui 741022,Gansu)

机构地区：[1]武山县林业和草原局,甘肃武山741300 [2]甘肃省小陇山林业科学研究所,甘肃天水741022

出　　处：《温带林业研究》2024年第1期1-8,共8页Journal of Temperate Forestry Research

基　　金：2023年度省级财政补助林业草原科技创新与国际合作项目“秦岭西端退化林修复技术研究与示范”。

摘　　要：【目的】探讨不同基质配比理化性质对黄檗幼苗生物量及生理指标的影响,揭示黄檗幼苗对基质理化性质的适应性,旨在为黄檗优质容器苗的生产提供科学的理论依据与技术支撑。【方法】以黄檗1年生幼苗为试验材料,以田园土、泥炭土为基质原料,按照不同体积比例配置成9种基质,采用单因素随机区组试验设计,比较9种基质理化性质及不同配比基质容器苗生物量和生理指标的差异性,并对其进行相关性分析。【结果】9种配比基质的理化性质存在显著差异。其密度、电导率、持水量、pH值范围分别为0.303~2.1 g·cm^(-3)、0.15~0.47 mS·cm^(-1)、1.3%~2.95%、6.11~8.31,添加泥炭土各基质的有机质、碱解氮、有效磷、速效钾、全N、全P均显著高于田园土,密度则显著低于田园土,5个配比基质(M2、M3、M4、M5、M6)的理化性质较好。基质中随着添加泥炭体积分数的增加,苗木的生物量、质量指数及叶绿素含量整体呈增加的趋势,泥炭土添加体积分数≥50%基质的有机质、碱解氮、有效磷、速效钾、全N、全P均显著高于田园土,其中M4配比基质(泥炭土:田园土=3:1)中苗木的生物量、质量指数和叶绿素含量最高,表现出明显的优势。相关性分析显示,基质的pH值、全N、全P与黄檗幼苗的大部分生物量之间存在显著或极显著的负相关关系,叶绿素含量与有机质、碱解氮、有效磷、速效钾呈显著正相关。【结论】田园土中添加不同比例泥炭土显著改变基质的理化性质,泥炭土添加体积分数≥50%的基质配比其理化性质均较好。添加泥炭体积75%的基质其育苗效果最好,是黄檗容器育苗的理想基质。【Objective】To explore the effects of physicochemical properties of different substrate ratios on the biomass and physiological indexes of Phellodendron amurense seedlings,and reveal the adaptability of Phellodendron amurense seedlings to substrate physicochemical properties,in order to provide scientific theoretical basis and technical support for the production of high-quality Phellodendron amurense container seedlings.【Method】The 1-year-old seedlings of Phellodendron amurense seedlings were used as experimental materials,and 9 substrates were prepared according to different volume proportions.A single factor randomized block design was used to compare the physicochemical properties of 9 substrates and the differences of biomass and physiological indexes of container seedlings with different proportions of substrates,and the correlation analysis was conducted.【Result】There were significant differences in physicochemical properties among 9 formulated substrates.That the relative parameters of 9 formulated substrates were reported as follows:bulk density:0.303-2.1 g·cm^(-3);electrical conductivity:0.15-0.47 mS·cm^(-1);water holding capacity:1.3%-2.95%;pH:6.11-8.31.The organic matter,alkali-hydrolyzed nitrogen,available phosphorus,available potassium,total N and total P of each matrix added to peat soil were significantly higher than those of pastoral soil,while the bulk density was significantly lower.The physicochemical properties of the five proported substrates(M2,M3,M4,M5 and M6)were better.The biomass,mass index and chlorophyll content of seedlings in the matrix increased with the addition of peat volume fraction,and the organic matter,alkali-hydrolytic nitrogen,available phosphorus,available potassium,total N and total P in the matrix with the addition of peat content≥50%were significantly higher than those in the idyllic soil.Among them,the biomass,quality index and chlorophyll content of seedlings in M4 ratio matrix(peat soil:pastoral soil=3:1)were the highest,showing obvious advantages.Cor

关 键 词：理化性质 黄檗 生物量 生理性状 

分 类 号：S723.13[农业科学—林木遗传育种]