中国农业科学2011，Vol.44Issue(7)：1415-1424,10.DOI:10.3864/j.issn.0578-1752.2011.07.014
梨园行间种草对土壤有机质和矿质元素变化及相互关系的影响
Effects of Inter-Row Planting Grasses on Variations and Relationships of Soil Organic Matter and Soil Nutrients in Pear Orchard
摘要
Abstract
[Objective]The purpose of this paper is to discuss the effects of inter-row planting grass (grazing) on soil organic matter and mineral dements in pear orchard.[Method]In 20-year-old 'Golden Pear' [Pyrus pyrifolia (Burm.f.).Cv.Nakai]orchard, in Daxing District, Beijing, three treatments were set up: inter-row planting ryegrass (Lolium perenne), white clover (Trifolium repens) and control for the clean tillage (CK).At the third and forth year after successive planting, the difference of soil organic matter and mineral elements content between different soil layers were measured and the relationships between soil organic matter and soil nutrients content were analyzed.[Result]Inter-row planting with L.perenne and T.repens could increase organic matter and organic C content in soil and regulate the carbon-nitrogen ratio.The total N, P and K, available P, K and Zn content, also alkaline hydrolytic nitrogen were improved significantly both in surface layer (0-20 em) and the subsurface layer (20-40 cm) in the two patterns.Inter-row planting with L.perenne could benefit the ratio of C/N, and enhance the content of total N, available N, P,K and Mn, Mg.While inter-row planting T.repens could improve the content of total N and K, available Fe and Zn well.The content of most elements in plot of inter-row planting with the same grass for four years were enhanced compared with those of three years.Significant relationships were found between the soil organic matter and most of the soil mineral elements, and different inter-row planting plots had different correlation.In plot of inter-row planted with T.repens, the micro-elements had obvious role in regulating soil organic matter.While in plot of inter-row planting with L.perenne, the macro-elements had better role in enhancing soil organic matter.[Conclusion]When inter-row planting with L.perenne and T.repens in pear orchard with sandy soil, both soil organic matter and mineral elements content in both surface and subsurface layers were increased to different degrees, the nutrients supply ability also improved.Inter-row planting with L.perenne and T.repens for successive years had different roles in the relationship between soil organic mater and soil nutrients, the effects of inter-row planting with T.repens for successive years were much better.关键词
梨园/行间种草/土壤有机质/土壤养分Key words
pear orchard/ inter-row planting grass/ soil organic matter/ soil nutrients引用本文复制引用
霍颖,张杰,王美超,姚允聪..梨园行间种草对土壤有机质和矿质元素变化及相互关系的影响[J].中国农业科学,2011,44(7):1415-1424,10.基金项目
国家科技支撑计划重大项目 (2008BAD92B08)、北京市自然科学基金项目 (6102004) （2008BAD92B08）
