草业学报2017，Vol.26Issue(4)：80-88,9.DOI:10.11686/cyxb2016362
生草配合施用有机肥对省力高效梨园土壤的培肥效应研究
Effects of cover cropping and organic fertilizer on soil nutrients in a pear orchard
摘要
Abstract
To promote grass sward management in orchards in China,this paper discusses the effects of planting herbage species combined with the application of organic fertilizer on soil mineral composition in a high producing and efficient pear orchard.The ‘xueqing’ pear orchard with 4-year and 8-year old inter-row herbage ground cover located on the Jizhong Plain,Hebei,was compared with a neighbouring pear orchard using interrow tillage to control vegetation.Stratified sampling was carried out in each 10 cm layer of 0-80 cm soil layers in all pear orchards.Soil organic matter and mineral element content in each soil layer were measured.The results showed that the available nutrient content was highest in the 0-50 cm soil layers after planting herbage.Compared to tillage a herbage regime of 4 years combined with the application of organic fertilizer,soil alkaline hydrolytic nitrogen,available P and Zn content in 0-10 cm layer and the available K and Fe in 0-20 cm layer were clearly higher.Eight years of managed herbage combined with the application of organic fertilizer resulted in significantly improved soil organic matter and alkaline hydrolytic nitrogen content in the 0-10 cm layer,available Mn and Fe in the 0-20 cm layer,available P and Cu in the 0-30 cm layer,available Zn in the 0-40 cm layer and available K in the 0-50 cm layer.However soil pH was reduced.After 8 years of herbage management and application of organic fertilizer the available P,K and Zn in the 0-50 cm soil layer accounted for 92％,82％ and 88％ of the 0-80 cm soil layer,respectively;soil fertility was improved and negative environmental effects such as nutrient losses reduced,improving the overall sustainability of the production system.关键词
梨园/生草/土壤养分Key words
pear orchard/planting herbage/soil nutrients引用本文复制引用
孙计平,张玉星,吴照辉,李英丽,王国英,张江红..生草配合施用有机肥对省力高效梨园土壤的培肥效应研究[J].草业学报,2017,26(4):80-88,9.基金项目
国家梨产业技术体系项目(CARS-29-13)资助. （CARS-29-13）
