Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.still.2006.01.005 |
Amelioration of soil compaction can take 5 years on a Vertisol under no till in the semi-arid subtropics | |
Radford, B. J.1; Yule, D. F.2; McGarry, D.3; Playford, C.4 | |
通讯作者 | Radford, B. J. |
会议名称 | Triennial International Conference of the International-Soil-Tillage-Research-Organisation |
会议日期 | JUL 13-18, 2003 |
会议地点 | Brisbane, ENGLAND |
英文摘要 | Heavy wheel traffic causes soil compaction, which adversely affects crop production and may persist for several years. We applied known compaction forces to entire plots annually for 5 years, and then determined the duration of the adverse effects on the properties of a Vertisol and the performance of crops under no-till dryland cropping with residue retention. For up to 5 years after a final treatment with a 10 Mg axle load on wet soil, soil shear strength at 70-100 mm and cone index at 180-360 mm were significantly (P < 0.05) higher than in a control treatment, and soil water storage and grain yield were lower. We conclude that compaction effects persisted because (1) there were insufficient wet-dry cycles to swell and shrink the entire compacted layer, (2) soil loosening by tillage was absent and (3) there were fewer earthworms in the compacted soil. Compaction of dry soil with 6 Mg had little effect at any time, indicating that by using wheel traffic only when the soil is dry, problems can be avoided. Unfortunately such a restriction is not always possible because sowing, tillage and harvest operations often need to be done when the soil is wet. A more generally applicable solution, which also ensures timely operations, is the permanent separation of wheel zones and crop zones in the field-the practice known as controlled traffic farming. Where a compacted layer already exists, even on a clay soil, management options to hasten repair should be considered, e.g. tillage, deep ripping, sowing a ley pasture or sowing crop species more effective at repairing compacted soil. (C) 2006 Elsevier B.V. All rights reserved. |
英文关键词 | amelioration compaction cone index soil shear strength soil water storage grain yield |
来源出版物 | SOIL & TILLAGE RESEARCH |
ISSN | 0167-1987 |
出版年 | 2007 |
卷号 | 97 |
期号 | 2 |
页码 | 249-255 |
出版者 | ELSEVIER SCIENCE BV |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | Australia |
收录类别 | CPCI-S ; SCI-E |
WOS记录号 | WOS:000251975900013 |
WOS关键词 | HIGH AXLE-LOAD ; SUBSOIL COMPACTION ; PHYSICAL-PROPERTIES ; GRAIN-YIELD ; PERSISTENCE ; GROWTH ; POPULATIONS ; REPAIR ; CLAY |
WOS类目 | Soil Science |
WOS研究方向 | Agriculture |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/296858 |
作者单位 | 1.Queensland Dept Nat Resources & Mines, Biloela, Qld 4715, Australia; 2.CTF Solut, Taringa, Qld 4068, Australia; 3.Queensland Dept Nat Resources & Mines, Indooroopilly, Qld 4068, Australia; 4.Queensland Dept Primary Ind & Fisheries, Rockhampton, Qld 4702, Australia |
推荐引用方式 GB/T 7714 | Radford, B. J.,Yule, D. F.,McGarry, D.,et al. Amelioration of soil compaction can take 5 years on a Vertisol under no till in the semi-arid subtropics[C]:ELSEVIER SCIENCE BV,2007:249-255. |
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