文献类型：期刊文献

中文题名：施肥和凋落物添加对杉木人工林土壤养分和土壤微生物特性的影响

英文题名：Effects of fertilization and litter addition on soil nutrient and soil microbial properties of Chinese fir plantation

作者：靳云铎[1] 白彦锋[2] 沈杨阳[1] 厉月桥[3] 刘儒[3] 姜春前[2] 张卓文[1] 王永健[1]

第一作者：靳云铎

机构：[1]华中农业大学园艺林学学院/湖北省林业信息工程技术研究中心,武汉430070;[2]中国林业科学研究院林业研究所,北京100091;[3]中国林业科学研究院亚热带林业实验中心,分宜336600

年份：2021

卷号：40

期号：5

起止页码：72-80

中文期刊名：华中农业大学学报

外文期刊名：Journal of Huazhong Agricultural University

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：国家重点研发计划项目(2017YFC0505605)。

语种：中文

中文关键词：杉木;林地管理;混合凋落物;近自然化改造;微生物生物量;人工林;土壤养分;地力衰退

外文关键词：Chinese fir;woodland management;mixed litters;close-to-nature transformation;microbial biomass;plantation;soil nutrients;ground power decline

分类号：S756.4

摘要：为解决杉木人工林土壤质量下降、地力衰退问题,以赣中南杉木人工林为研究对象,采用分解袋法,设置不同施肥处理与树种凋落物组合添加处理,研究其对土壤养分与土壤微生物特性的影响。结果显示,与不施肥对照处理相比,施用氮磷混合肥后杉木林土壤碱解氮和速效磷含量分别增加了10.7%和36.7%,且显著高于施加单一肥料处理。与不添加凋落物对照处理相比,添加杉木+闽楠混合凋落物和单独添加闽楠凋落物后,土壤微生物生物量均显著提高。结果表明,在杉木林生产中,提倡营造杉×阔混交林以及对现有杉木中幼龄纯林进行近自然化改造以改变其凋落物的组成、质量和数量,能充分利用多树种混合凋落物分解的加合效应,并配合施用氮磷复合肥料来改善杉木林土壤养分状况。
Chinese fir(Cunninghamia lanceolata(Lamb.)Hook.)belongs to the light-tolerant coniferous species of Cunninghamia family,which is widely distributed in China and Vietnam.It has a series of characteristics including fast growth,high yield,beautiful wood grain,insect resistance(such as termites),corrosion resistance,and adaptability to arid and arid habitats.It is one of the important endemic fast-growing timber species in China.In order to solve the decline of soil quality in Chinese fir plantations and the problem of soil fertility decline,effects of fertilization and litter addition on soil nutrient and soil microbial properties of Chinese fir plantation in Central South Jiangxi Province were studied by using the bag method to set up different fertilization treatments and litters of multiple tree species combined treatments.The results showed that compared with the control(without fertilization)treatment,the content of soil alkline nitrogen and available phosphorus of mixed N+P fertilizers treatment in the Chinese fir plantation soil increased by 10.7%and 36.7%,respectively,which was significantly higher than that of the single fertilizer treatment.Compared with the control(without addition of litters)treatment,mixed addition of litters of C.lanceolata+P.bournei and single addition of P.bournei litter promoted soil microbial biomass significantly,indicating that the litter of P.bournei played a key role in decomposing the mixed litter of Chinese fir plantation.In practice,the mixed forest of C.lanceolata×broad-leaved is recommended,and the current young to mid age pure C.lanceolata stand should be reformed by means of close-to-nature transformation in order to change the composition,quality and quantity of litter.In this way,the additive effect of decomposing mixed litter of multiple tree species can be fully used and the soil nutrient status of the Chinese fir plantation can be improved by combining with the application of mixed N+P fertilizers.