长期施肥对杉木人工林土壤性质的影响及其土壤肥力评价  

Effects of Long-term Fertilization on Soil Properties and Soil Fertility Evaluation of Cunninghamia lanceolata Plantations

作　　者：韦昌鹏 黄辉 李书苹 涂华龙 杨瑞青 赵隽宇 WEI Changpeng;HUANG Hui;LI Shuping;TU Hualong;YANG Ruiqing;ZHAO Junyu(Guangxi Zhuang Autonomous Region State-owned Weidu Forest Farm,Laibin 546199,Guangxi,China;Guangxi Huawote Group Co.,Ltd.,Nanning 530034,Guangxi,China;Guangxi Research and Development Center of Forest New Fertilizer,Nanning 530002,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维都林场,广西来宾546199 [2]广西华沃特集团股份有限公司,广西南宁530034 [3]广西林用新型肥料研发中心,广西南宁530002 [4]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4期81-86,共6页Eucalypt Science & Technology

基　　金：广西重点研发计划(桂科AB24010338);广西科技基地和人才专项(桂科AD23049001);广西自筹经费林业科技项目(2023GXZCLK62);中央引导地方科技发展资金项目(桂科ZY22096012)。

摘　　要：探究长期施肥对桂西北杉木人工林土壤性质的影响并评价其土壤肥力质量,为制定科学合理的施肥方案提供理论依据。以2015年造林的桂西北典型杉木人工林为研究对象,设置不施肥(CK)和常规配方施肥处理(PF)的长期定位试验,于2015—2019年连续施肥,并于2018年和2020年采集土壤样品进行分析。结果表明:长期施肥显著提高了土壤有机质、全氮、全磷、全钾、有效铜、锌、铁和锰含量,但显著降低了土壤pH值;长期施肥后,土壤速效碱解氮、有效磷和速效钾的含量呈现先增加后减少的趋势,且在施肥3a后达到峰值;主成分分析和隶属度函数的综合评价表明,施肥显著提高了土壤肥力质量,但施肥5 a后其提升效果有所减弱。To explore the effects of long-term fertilization on the soil properties of Cunninghamia lanceolata plantations in northwest Guangxi and evaluate its soil fertility quality,and to provide theoretical basis for making scientific and reasonable fertilization scheme.Taking the typical C.lanceolata plantations planted in northwest Guangxi in 2015 as the research object,a long-term positioning experiment of no fertilization(CK)and conventional formula fertilization treatment(PF)was set up,continuous fertilization was conducted from 2015 to 2019,and soil samples were collected for analysis in 2018 and 2020.The results showed that long-term fertilization significantly increased the contents of soil organic matter,total nitrogen,total phosphorus,total potassium,available copper,zinc,iron and manganese,but significantly decreased soil pH;After long-term fertilization,the content of available phosphorus and available potassium in soil increased first and then decreased,and reached the peak after 3 years of fertilization.The comprehensive evaluation of principal component analysis and membership function showed that fertilization significantly improved soil fertility quality,but the improvement effect was weakened after 5 years of fertilization.

关 键 词：长期施肥 杉木人工林 土壤性质 土壤肥力 

分 类 号：S718[农业科学—林学]