不同类型肥料对油茶人工林土壤生态化学计量特征的影响  

Effects of Different Types of Fertilizers on Ecological Stoichiometric Characteristics of Soils in Camellia oleiferaPlantations

作　　者：潘会彪 廖振辉 唐健[2] 彭健 柯琴 覃祚玉[2] 赵隽宇 胡荣辉 PAN Huibiao;LIAO Zhenhui;TANG Jian;PENG Jian;KE Qin;QIN Zuoyu;ZHAO Junyu;HU Ronghui(Guangxi Zhuang Autonomous Region State-owned Huangmian Forest Farm,Luzhai 545618,Guangxi,China;Guangxi Zhuang Autonomous Region Forestry Research Institute,Nanning 530002,Guangxi,China)

机构地区：[1]广西壮族自治区国有黄冕林场,广西鹿寨545618 [2]广西壮族自治区林业科学研究院,广西南宁530002

出　　处：《桉树科技》2024年第2期91-94,共4页Eucalypt Science & Technology

基　　金：广西林业科技推广示范项目([2024]GT23号)。

摘　　要：以不同类型肥料对油茶人工林土壤养分状况及碳氮磷化学计量学特征的影响,以期为广西油茶人工林科学管理提供基础数据参考。设置有机肥、纯化肥、有机-无机复合肥3种处理并以不施肥为对照,采集土壤样品进行化学性质测定,分析不同类型肥料处理油茶人工林土壤碳、氮、磷化学计量比的差异特征。结果表明:各处理的土壤pH值普遍呈酸性(3.86~4.06)但差异不显著。土壤有机碳含量范围为9.34~13.58 g·kg^(-1),以纯化肥处理最低。有机-无机复混肥处理土壤碱解氮(66.3 mg·kg^(-1))、有效磷(4.1 mg·kg^(-1))、速效钾(66.7 mg·kg^(-1))含量均处于较高水平。有机-无机复混肥处理能够显著降低土壤的C∶N和C∶P,提高磷素的有效性同时还能保持氮素和磷素的相对平衡,有利于油茶的生长。纯化肥处理对C∶P和N∶P的影响较小。The effects of different fertilizer types on soil nutrient status and stoichiometric characteristics of carbon,nitrogen and phosphorus in Camellia oleifolia plantations were studied in order to provide basic reference data for scientific management of such plantations in Guangxi.Treatments of organic fertilizer,pure fertilizer and organic-inorganic compound fertilizer were set up(with a no fertilizer treatment as a control),and the soil samples were collected for chemical property determination.Stoichiometric ratios of soil carbon,nitrogen and phosphorus treated by different types of fertilizers were then analyzed.The results showed that the soil pH of all treatments was generally acidic(3.86~4.06),but the differences were not significant.The content of soil organic carbon ranged from 9.34 to 13.58 g·kg^(-1),with the pure fertilizer treatment having the lowest content.The contents of alkali-hydrolyzed nitrogen(66.3 mg·kg^(-1)),available phosphorus(4.1 mg·kg^(-1))and available potassium(66.7 mg·kg^(-1))in soil treated with organic-inorganic compound fertilizer were all at high levels.The organic-inorganic compound fertilizer treatment significantly reduced the C:N and C:P ratios of soils,improved the availability of phosphorus,and maintained the relative balance of nitrogen and phosphorus,which are factors conducive to the growth of camelia tea.The effects of the pure fertilizer treatment on C:P and N:P soil ratios were small.

关 键 词：油茶 肥料类型 生态化学计量学特征 

分 类 号：S714.5[农业科学—林学]