Assessment of Micro-Basin Tillage as a Soil and Water Conservation Practice in the Black Soil Region of Northeast China

PLoS One. 2016 Mar 31;11(3):e0152313. doi: 10.1371/journal.pone.0152313. eCollection 2016.

Abstract

Micro-basin tillage is a soil and water conservation practice that requires building individual earth blocks along furrows. In this study, plot experiments were conducted to assess the efficiency of micro-basin tillage on sloping croplands between 2012 and 2013 (5°and 7°). The conceptual, optimal, block interval model was used to design micro-basins which are meant to capture the maximum amount of water per unit area. Results indicated that when compared to the up-down slope tillage, micro-basin tillage could increase soil water content and maize yield by about 45% and 17%, and reduce runoff, sediment and nutrients loads by about 63%, 96% and 86%, respectively. Meanwhile, micro-basin tillage could reduce the peak runoff rates and delay the initial runoff-yielding time. In addition, micro-basin tillage with the optimal block interval proved to be the best one among all treatments with different intervals. Compared with treatments of other block intervals, the optimal block interval treatments increased soil moisture by around 10% and reduced runoff rate by around 15%. In general, micro-basin tillage with optimal block interval represents an effective soil and water conservation practice for sloping farmland of the black soil region.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Agriculture / methods*
  • China
  • Conservation of Natural Resources / methods*
  • Rain
  • Seasons
  • Soil / chemistry*
  • Water / analysis*
  • Water Supply*
  • Zea mays / growth & development

Substances

  • Soil
  • Water

Grants and funding

This work was supported by the National Key Technology R & D Program of China (No.2011BAD31B01), http://www.most.gov.cn/eng/organization/mission/index.htm; Natural Science Foundation of China (No. 41201534, 41571480), http://www.nsfc.gov.cn/publish/portal1/; and Natural Science Foundation of Jilin Province (No. 20130522072JH, 20150224046SF), http://kjt.jl.gov.cn/kjt/4/tindex.shtml. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.