干旱区生态环境知识资源中心(Arid): 干旱区盐碱地不同栽培草地土壤理化性质及微生物数量

Arid

	干旱区盐碱地不同栽培草地土壤理化性质及微生物数量
其他题名	Soil physico-chemical properties and microbial quantities in different pastures in arid area of saline-alkali soil
	贾倩民; 陈彦云; 刘秉儒; 陈科元; 韩润燕
来源期刊	草业科学
ISSN	1001-0629
出版年	2014
卷号	31 期号:7 页码:1218-1225
中文摘要	对宁夏干旱区盐碱地6种栽培草地0-20、20-40cm土层土壤理化性质、土壤养分含量及微生物数量进行比较,旨在筛选出改善干旱区盐碱地土壤品质的优良草地。结果表明,各栽培草地0-20cm土壤含水量、容重、pH值均低于20-40cm,土壤养分及全盐含量均高于20-40cm;豆科栽培草地改善两层土壤有机质、全氮、速效氮及降低20-40cm全盐的效果强于禾本科,禾本科栽培草地保水蓄水、降低土壤容重及增加20-40cm土层速效磷的效果强于豆科;豆科、禾本科栽培草地改善土壤品质的效果大小分别为紫花苜蓿(Medicago sativa)>沙打旺(Astragalus adsurgens)>黄花草木樨(Melilotus offcinalia)和圆柱披碱草(Elymus cylindricus)>扁穗冰草(Agropyron cristatum)>蒙杂冰草(A.cristatum*A.mongolicum);各栽培草地0-20cm土层细菌、放线菌及真菌数量远大于20-40cm土层,豆科、禾本科栽培草地两层土壤中3种微生物数量大小分别为紫花苜蓿>沙打旺>黄花草木樨和圆柱披碱草>扁穗冰草>蒙杂冰草;0-20cm土壤含水量与真菌数量呈显著正相关(P<0.05),20-40cm土壤pH值与放线菌、真菌数量呈显著负相关(P<0.05);两层土壤的全盐含量与细菌、放线菌及真菌数量均呈负相关,有机质、全氮、速效氮和速效钾与细菌、放线菌数量均呈极显著正相关(P<0.01),速效磷、速效钾与真菌数量呈极显著正相关(P<0.01)。
英文摘要	Soil of 0-20cm and 20-40cm soil layer were sampled from 6different cultivated grassland in arid and saline-alkali area of Ningxia to analysis their physico-chemical properties,nutrient content and soil microbial quantity and screen the best grassland to improve soil quality.The results showed that soil moisture content,bulk density,pH in 0-20cm layer were lower than that in 20-40cm layer in the cultivated grassland.Soil nutrient and soil total salt content in 0-20cm layer were higher than that in 20-40cm. Leguminous pasture grassland performed better in increasing soil organic matter,total nitrogen,available nitrogen in both sampled layers and reducing soil salinity in 20-40cm compared with other gramineae pastures.Gramineous pastures performed better in improving water conservation,reducing soil bulk density and increasing soil available phosphorus in 20-40cm soil compared with other leguminous pastures.The ability of legume to improve the soil quality decreased in the following order:Medicago sativa>Astragalus adsurgens>Melilotus offcinalia.The ability of gramineae to improve soil quality decreased in the following order:Elymus cylindricus>Agropyron cristatum>A.cristatumA.mongolicum.For all of the studied cultivated grassland,there were more soil bacteria,actinomycetes,fungi in 0-20than in 20-40cm.The numbers of these 3tested microorganism also varied with cultivated pasture.For leguminosae,the number of microorganism decreased in the following order:M.sativa>A.adsurgens>M.offcinalia.For gramineae, the number of microorganism decreased in the following order E.cylindricus>A.cristatum>A.cristatum A.mongolicum.Soil water content in 0-20cm was significantly positive correlated with numbers of fungi (P<0.05).Soil pH value and the number of actinomycetes and fungi in 20-40cm were significant negative correlated(P<0.05).Soil total salt contents in both layers were negatively correlated with the numbers of bacteria,actinomyces and fungi.Organic matter,total nitrogen,available nitrogen,phosphorus and potassium were significant positive correlated (P<0.01)with the numbers of bacteria,actinomyces. Available phosphorus and available potassium were significantly positively correlated with the number of fungi(P<0.01).
中文关键词	干旱区 ; 盐碱地 ; 栽培草地 ; 土壤养分 ; 微生物
英文关键词	arid area saline alkali land sowed grassland soil nutrient microbial
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:5216116
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230845
作者单位	宁夏大学/西部生态与生物资源开发联合研究中心, 西北土地退化与生态恢复国家重点实验室培育基地, 银川, 宁夏 750021, 中国
推荐引用方式 GB/T 7714	贾倩民,陈彦云,刘秉儒,等. 干旱区盐碱地不同栽培草地土壤理化性质及微生物数量[J]. 宁夏大学,2014,31(7):1218-1225.
APA	贾倩民,陈彦云,刘秉儒,陈科元,&韩润燕.(2014).干旱区盐碱地不同栽培草地土壤理化性质及微生物数量.草业科学,31(7),1218-1225.
MLA	贾倩民,et al."干旱区盐碱地不同栽培草地土壤理化性质及微生物数量".草业科学 31.7(2014):1218-1225.