Drip irrigation lateral spacing and mulching affects the wetting pattern, shoot-root regulation, and yield of maize in a sand-layered soil

Lifeng Zhou, Hao Feng, Ying Zhao, Zhijuan Qi, Tibin Zhang, Jianqiang He and Miles Dyck

Agricultural Water Management, 2017, vol. 184, issue C, 114-123

Abstract: Soil with a 20–60cm thick subsoil (60–90cm below the surface) sand layer has been recently reclaimed to exploit its grain production potential in an arid region in northwest China. A 2-year field study was conducted in the Hetao irrigation district to investigate the effects of lateral spacing and soil mulching methods under drip irrigation on the soil moisture, NO3−, shoot-root regulation, and water use efficiency (WUE) of spring maize. The Christiansen uniformity coefficient (Cus) was adopted to evaluate soil moisture and NO3− distribution, which was calculated with soil water content and NO3− concentration. The four studied treatments consisted of two irrigation lateral-spacings (A1: 1.0m, A2: 0.5m) and two film-covering modes (M1: fully mulched, M2: partially mulched) were arranged.

Keywords: Mulched drip irrigation; Lateral spacing; Wetting pattern; Shoot-root regulation; Sand-layered soil (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (12)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:184:y:2017:i:c:p:114-123

DOI: 10.1016/j.agwat.2017.01.008

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