Journal of Food, Agriculture and Environment
Vol 10,
Issue 3&4,2012
Online ISSN: 1459-0263
Print ISSN: 1459-0255
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Effects of soil moisture level and film mulch removal period on water use efficiency and physiological properties of maize (Zea mays L.)
Author(s):
Gengmin Jiang,
Yuannong Li *, Fan Liu, Yongxiang HuRecieved Date: 2012-06-08, Accepted Date: 2012-09-27
Abstract:The effects of soil moisture level and film mulch removal period on water use efficiency (WUE) and physiological properties of summer maize was examined by using potted plants. The results showed that compared to film mulching in the whole crop cycle, film mulch removal at seedling stage, or tasseling stage increased water consumption by 7.12–9.55% and 0.07–1.30%, respectively, increased total dry mass by 10.42–20.97% and 7.32– 14.37%, respectively, thus increasing WUE by 0.80–12.93% and 5.95–14.28%, respectively. At the same time, film mulch removal at jointing stage reduced total dry mass at low soil moisture level treatment and reduced WUE. Film mulch removal at seedling stage had significant increase in root growth activity, leaf chlorophyll and carotenoid content and significant decrease in proline content. Within the same film mulch removal period, high soil moisture level increased total dry mass accumulation, WUE, root activity, leaf chlorophyll and carotenoid contents, and reduced proline content. In this experiment, based on comprehensive consideration of dry mass accumulation, WUE and physiological properties, the effect of water saving and yield increase of film mulch removal at seedling stage in the high soil moisture level treatment was the best.
Keywords:Dry mass accumulation,
water use efficiency, root activity, leaf chlorophyll, leaf carotenoid, prolineJournal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 3&4
Category: Agriculture
Pages: 695-700
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