Effects of Plastic Film Mulching and Ridge Planting on Yield and Water Use Efficiency of Potato in Loess Plateau

doi:10.3969/j.issn.1000-6362.2014.01.011

Abstract

Abstract: Different treatments of plastic film mulching and ridge-burrow cropping models were set, and bared ground planting was set as control.Our main results were: (1)compared to convention planting，the emergence rate and the height of potato were significantly improved by plastic film mulching(P<0.05).The highest values emerged in the treatment of plastic film mulching with ridge planting，in which the emergence rate and the height of potato were improved by 11.72%-14.94% and 10.65cm-12.35cm respectively.(2)Soil water moisture and WUE were also improved by plastic film mulching (P<0.05), and corresponding values in treatment of plastic film mulching with ridge planting were higher than without ridge planting (P<0.05).(3)Plastic film mulching improved the potato yield (P<0.05), and in treatment with ridge planting, the extent of improvement were higher.All treatments improved the commodity rate of potato (P<0.05), and value in treatment of plastic film mulching with ridge planting was also higher than without ridge planting.In conclusion, plastic film mulching and ridge planting could increase the yield and WUE of rainfed potato evidently, and whole mulching with single ridge has more economic benefit in Loess Plateau.

Key words: Loess Plateau, Potato in rainfed field, Single and double ridges, Mulching model

XUE Jun wu,REN Wen jiang,YAN Chang rong. Effects of Plastic Film Mulching and Ridge Planting on Yield and Water Use Efficiency of Potato in Loess Plateau[J]. Chinese Journal of Agrometeorology, 2014, 35(01): 74-79.

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