干旱区生态环境知识资源中心(Arid): 根际促生菌对石漠化地区造林苗木的促生效应

Arid

	根际促生菌对石漠化地区造林苗木的促生效应
其他题名	Growth promoting effect of plant growth-promoting rhizobacteria on tree seedlings suitable for afforestation in rocky desertified region
	曹彦强; 张中峰; 蒋士宋; 唐金荣; 周龙武; 滕秋梅; 徐广平
来源期刊	广西植物
ISSN	1000-3142
出版年	2021
卷号	41 期号:5 页码:1000-3142
中文摘要	西南岩溶石漠化山区水土流失严重、养分贫瘠,导致植被恢复困难。为探究固氮菌对岩溶石漠化地区造林苗木的生长促进效应,该文以广西石漠化地区常见造林树种香樟、任豆、喜树和台湾相思苗木为材料,利用平板稀释法从石漠化乡土植物根际土壤筛选固氮菌,通过测定固氮酶活性及鉴定固氮菌菌种,选择固氮酶活性较高的菌种制成复合菌剂接种到试验苗木进行盆栽试验。结果表明:共筛选得到6株具有固氮能力的根际促生菌,分别属于根瘤菌属(Rhizobium)、中华根瘤菌属(Sinorhizobium)和黄杆菌属(Flavobacterium),其中归类为根瘤菌属的3株固氮菌酶活性较高。复合菌剂接种试验表明接种固氮菌对造林苗木的生长具有明显促进作用。与未接种处理相比,接种处理苗木的株高、叶面积、生物量以及叶绿素含量均显著增长;同时苗木的氮、磷、钾含量也有不同程度的增加。其中,香樟、任豆、喜树和台湾相思的氮含量分别提高了28.9%、53.1%、37.0%和31.6%;香樟、台湾相思的磷含量分别增加了25.6%和42.5%;任豆、台湾相思的钾含量分别增加了57.5%和49.7%。接种石漠化乡土固氮菌能够显著促进造林苗木生长和养分含量,在石漠化植被修复中具有较好的应用前景。
英文摘要	Extensive soil erosion and vegetation degradation are common in karst rocky desertified area,and presenting a serious challenge of restoration of degraded habitats.In order to explore the promoting effect of PGPR (plant growth promoting rhizobacteria) on the growth of afforestation seedlings,seedlings of Cinnamomum camphora,Zenia insignis,Camptotheca acuminata and Acacia confusa which are common in Guangxi rocky desertified region were used as experimental materials.The plate dilution method was used to screen nitrogen-fixing bacteria from rhizosphere soil of rocky desertification native plants.The strains with higher nitrogenase activities were selected and inoculated into experimental seedlings for pot experiment.The results were as follows:Six strains of nitrogen-fixing bacteria from rhizosphere soil were obtained,and the 16S rDNA sequence analysis showed that the tested strains belong to Rhizobium,Sinorhizobium and Flavobacterium.Among them,the nitrogenase activity of three strains of Rhizobium was the highest.Pot experiment showed that inoculating nitrogen fixing bacteria could promote the growth of afforestation seedlings.Plant height,leaf area,leaf dry weight and chlorophyll content increased significantly compared to control.Nitrogen content of Cinnamomum camphora,Zenia insignis,Camptotheca acuminate and Acacia confusa seedlings significantly increased by 28.9%,53.1%,37.0% and 31.6%,respectively.Phosphorus contents of Cinnamomum camphora and Acacia confusa was increased significantly by 25.6% and 42.5%,respectively,while the potassium contents of Zenia insignis and Acacia confusa was increased significantly by 57.5% and 49.7%,respectively.The nitrogen-fixing bacterial strains of karst rocky decertified areas in Guangxi have growth promoting effect on local tree seedings used for afforestation.They provide a strong potential for forest restoration through seedling inoculation.
中文关键词	石漠化 ; 固氮菌 ; 造林苗木 ; 促生效应 ; 植被修复
英文关键词	rocky desertification nitrogen-fixing bacteria afforestation seedlings growth promotion vegetation restoration
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Plant Sciences
CSCD记录号	CSCD:7010354
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365109
作者单位	曹彦强, 广西壮族自治区中国科学院广西植物研究所, 广西喀斯特植物保育与恢复生态学重点实验室, 桂林, 广西 541006, 中国.; 张中峰, 广西壮族自治区中国科学院广西植物研究所, 广西喀斯特植物保育与恢复生态学重点实验室, 桂林, 广西 541006, 中国.; 周龙武, 广西壮族自治区中国科学院广西植物研究所, 广西喀斯特植物保育与恢复生态学重点实验室, 桂林, 广西 541006, 中国.; 滕秋梅, 广西壮族自治区中国科学院广西植物研究所, 广西喀斯特植物保育与恢复生态学重点实验室, 桂林, 广西 541006, 中国.; 徐广平, 广西壮族自治区中国科学院广西植物研究所, 广西喀斯特植物保育与恢复生态学重点实验室, 桂林, 广西 541006, 中国.; 蒋士宋, 全州县科学技术情报研究所, 全州, 广西 541500, 中国.; 唐金荣, 全州县枧塘镇农业技术推广站, 全州, 广西 541518, 中国.
推荐引用方式 GB/T 7714	曹彦强,张中峰,蒋士宋,等. 根际促生菌对石漠化地区造林苗木的促生效应[J],2021,41(5):1000-3142.
APA	曹彦强.,张中峰.,蒋士宋.,唐金荣.,周龙武.,...&徐广平.(2021).根际促生菌对石漠化地区造林苗木的促生效应.广西植物,41(5),1000-3142.
MLA	曹彦强,et al."根际促生菌对石漠化地区造林苗木的促生效应".广西植物 41.5(2021):1000-3142.