期刊首页 优先出版 当期阅读 过刊浏览 作者中心 关于期刊 English

《农业科学与工程前沿(英文)》 >> 2016年 第3卷 第2期 doi: 10.15302/J-FASE-2016104

Effect of mulching with maize straw on water infiltration and soil loss at different initial soil moistures in a rainfall simulation

. College of Engineering, China Agricultural University, Beijing 100083, China.. Department of Biosystems Engineering, University of Manitoba, Winnipeg R3T 5V6, Canada

录用日期: 2016-06-29 发布日期: 2016-07-05

下一篇 上一篇

摘要

Mulching and soil water content (SWC) have a significant impact on soil erosion, and this study investigated the effect of straw mulching on water infiltration and soil loss under different initial SWC treatments in a rainfall simulation experiment conducted in northern China. Increasing initial SWC can decrease soil infiltration and increase soil loss. During an 80 mm rainfall event (80 mm·h for 60 min), 8%, 12% and 16% initial SWC treatments decreased cumulative infiltration by 8.7%, 42.5% and 58.1%, and increased total sediment yield by 44, 146 and 315 g, respectively, compared to 4% initial SWC. However, in all the straw mulching treatments, there was no significant difference in stable infiltration rate between the different initial SWC treatments. For all initial SWC treatments, straw mulching of 30% or more significantly enhanced water infiltration by over 31% and reduced soil loss by over 49%, compared to the unmulched treatment. Taking into consideration the performance of no-till planters, a maize straw mulching rate of 30% to 60% (1400–3100 kg·hm ) is recommended for the conservation of water and soil in northern China.

相关研究