Influences of mulching durations on soil erosion and nutrient losses in a peanut (Arachis hypogaea)-cultivated land

H. Zhang, Qiujiang Liu, X. Yu and L. Wang

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2014, vol. 72, issue 2, 1175-1187

Abstract: Plastic film mulching is widely employed to improve crop yields. Mulching for the entire crop growth period is a widespread practice. However, a shorter plastic film mulching duration is suggested for obtaining larger grain yield recently. To quantify the effects of plastic film mulching durations on soil erosion and nutrient losses, a three-treatment experiment with three replicates was constructed in field. The designed treatments were control (M0, non-mulched treatment), mulching from sowing to the end of the peanut pod-setting stage (M1) and pod-filling stage (M2). Plastic film mulching significantly increased the mean runoff and sediment yield. With film mulching, the mean runoff and soil losses among M1 and M2 treatments had no significant difference, and significantly larger than that in M0 treatment. After mulching removing, there were no significant differences between the mean runoff and soil losses of M0 and M1 treatments. Compared with the M2 treatment, the M0 treatment had significantly reduced mean runoff and soil losses of all the events. Non-mulching increased the total nitrogen (TN) and total phosphorus (TP) losses. The M0 treatment had the highest TN (23.0 mg m −2 ) and TP (3.02 mg m −2 ) losses in the three treatments. The M2 treatment significantly reduced the TN and TP losses. In conclusion, mulching from sowing to the end of pod-setting stage was suggested as the appropriate choice for the largest yield and less soil erosion. But, some soil conservation measurements should be taken in furrow areas to effectively reduce soil erosion, under the condition of film mulching. Copyright Springer Science+Business Media Dordrecht 2014

Keywords: Soil erosion; Plastic film mulching; Mulching duration; Runoff; Nutrient losses (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1007/s11069-014-1063-1

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