We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Controllability of Phosphorus Losses in Surface Runoff from Sloping Farmland Treated by Agricultural Practices.
- Authors
Zhang, Qingwen; Chen, Shanghong; Dong, Yuequn; Liu, Dinghui; Yang, Xiaojuan; Yang, Zhengli
- Abstract
Phosphorus (P) loss from arable sloping land due to water erosion causes off-site environment pollution in the Three Gorges area in China. This study aims to estimate the effects of agricultural practices on the reduction of P losses during water erosion processes under natural precipitation conditions: contour culturing with organic matter addition (CT + OM), contour culturing with wheat straw mulching (CT + SM), contour culturing with straw mulching and organic matter addition (CT + OM + SM) and conventional downslope culturing framework as a control (CK). Results demonstrated that CT + OM + SM could viably diminish runoff, sediment yields and P losses from arable sloping land. Compared with CK, CT + OM, CT + SM and CT + OM + SM lessened the surface runoff depths by 19%, 34% and 50%, respectively. A high curve number value induced a notable runoff potential from the plot. The surface-runoff-related total P (TP) loads for CK with yearly measures of 1·56 kg ha−1 were significantly higher than those for CT + OM, CT + SM and CT + OM + SM at 1·07, 0·77 and 0·51 kg ha−1 ( p < 0·05), respectively. With all things considered, the particulate P losses represented a significant division of TP losses, adding up to almost 80% in 2014 and 79% in 2015. The outcomes demonstrated that surface protection and organic matter addition are two of the greatest agricultural protection practices that lessen P losses in the surface runoff from sloping farmland by water erosion. Copyright © 2017 John Wiley & Sons, Ltd.
- Subjects
CHINA; PHOSPHORUS in water; ARABLE land; RUNOFF &; the environment; SOIL erosion; POLLUTION; AGRICULTURE; SLOPES (Physical geography)
- Publication
Land Degradation & Development, 2017, Vol 28, Issue 5, p1704
- ISSN
1085-3278
- Publication type
Article
- DOI
10.1002/ldr.2702