干旱区生态环境知识资源中心(Arid): 不同耕作方式对土壤有机碳、微生物量及酶活性的影响

Arid

	不同耕作方式对土壤有机碳、微生物量及酶活性的影响
其他题名	Effect of tillage system on soil organic carbon,microbial biomass and enzyme activities
	陈娟 1; 马忠明 1; 刘莉莉 2; 吕晓东 3
来源期刊	植物营养与肥料学报
ISSN	1008-505X
出版年	2016
卷号	22 期号:3 页码:667-675
中文摘要	【目的】依托8年长期(2005~2012)固定道定位试验,研究不同耕作方式对土壤有机碳、土壤微生物量、土壤酶活性在090 cm土层的分布特征,为优化中国西北干旱区的耕作方式提供理论依据。【方法】试验包括固定道垄作(PRB)、固定道平作(PFT)与传统耕作(CT)三种耕作模式下的土壤有机碳土壤总有机碳(TOC)、颗粒有机碳(POC)、土壤微生物量碳(MBC)、土壤微生物量氮(MBN)、土壤微生物量磷(MBP)、蔗糖酶、过氧化氢酶、脲酶及小麦产量进行了测定和分析。【结果】在090 cm土层,不同耕作方式下的TOC、POC、MBC、MBN、MBP、蔗糖酶活性、脲酶活性均随着土层的增加呈下降趋势,过氧化氢酶活性呈先下降后增大的分布特征;在060 cm,固定道保护性耕作能够显著增加心土层作物生长带土壤有机碳储量,有机碳储量大小为PRB>PFT>CT;PRB、PFT较CT可以显著增加010 cm作物生长带TOC、POC、MBC、MBN、MBP含量、蔗糖酶、脲酶活性,其大小为PRB>PFT>CT;耕作方式对过氧化氢酶活性影响不显著;TOC、POC、MBC、MBN、MBP、蔗糖酶活性、脲酶活性、过氧化氢酶活性之间均达到了显著或极显著相关。【结论】PRB较PFT、CT能够提高耕作层(010 cm)土壤有机碳含量、土壤微生物量、土壤酶活性,增加作物产量,增大060 cm土层有机碳储量,耕作方式(PRB、PFT及CT)对10 cm以下土层土壤环境改善作用不明显。
英文摘要	【Objectives】An eight consecutive year (2005-2012) field experiment was conducted to evaluate tillage practices on soil organic carbon,microbial biomass and soil enzyme activity and their distributions in 0-90 cm depth of soils in arid northwestern China,to which would provide a theoretical basis for better choosing tillage practices. 【Methods】The treatments include permanent raised bed (PRB),zero tillage with control traffic on flat field (PFT) and conventional tillage (CT),and the total soil organic carbon(TOC),particulate organic carbon (POC),microbial biomass carbon (MBC),microbial biomass nitrogen (MBN),microbial biomass phosphorus (MBP),enzymatic activities (invertase,urease and catalase) and grain yield of spring wheat were measured. 【Results】The contents of TOC,POC,MBC,MBN and MBP and the activities of invertase and urease were declined with increasing depth (0-90 cm) in the PRB,PFT and CT treatments,and the catalase activity was decreased first and then increased. In the whole 0-60 cm soil depth,the SOC storage was the highest under PRB, followed by the PFT and CT treatments in crop growth areas. The activities of enzymes (invertase and urease) and the contents of TOC,POC,MBC,MBN and MBP in the upper layer (0-10 cm) in the plots tilled by PRB and PFT were higher than those in the plots tilled by CT. There were significant and extremely significant correlations among TOC,POC,MBC,MBN,MBP and enzyme activities (invertase,urease and catalase),while the catalase activity was not significantly affected by the three tillage modalities. 【Conclusions】The PRB and PFT treatments could improve the contents of soil organic carbon,microbial biomass,soil enzyme activities and the grain yield, and the sequestration of carbon in the whole profile of 60 cm under the PRB treatment was greater than that under the CT and PFT treatments. Beneath 10 cm,there was no significantly improvement in soil environment for the PRB and PFT treatments compare with the CT treatment.
中文关键词	固定道 ; 土壤有机碳 ; 土壤微生物量 ; 土壤酶活性
英文关键词	permanent raised bed soil organic carbon microbial biomass soil enzyme activity
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:5832459
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235313
作者单位	1.甘肃农业大学农学院, 兰州, 甘肃 730070, 中国; 2.甘肃省卓尼县气象局, 卓尼, 甘肃 747600, 中国; 3.甘肃省农业科学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	陈娟,马忠明,刘莉莉,等. 不同耕作方式对土壤有机碳、微生物量及酶活性的影响[J]. 甘肃农业大学,2016,22(3):667-675.
APA	陈娟,马忠明,刘莉莉,&吕晓东.(2016).不同耕作方式对土壤有机碳、微生物量及酶活性的影响.植物营养与肥料学报,22(3),667-675.
MLA	陈娟,et al."不同耕作方式对土壤有机碳、微生物量及酶活性的影响".植物营养与肥料学报 22.3(2016):667-675.