Deficit irrigation as an on-farm strategy to maximize crop water productivity in dry areas

被引：758

作者：

Geerts, Sam ^{[1
]}

Raes, Dirk ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Div Soil & Water Management, B-3001 Louvain, Belgium

来源：

AGRICULTURAL WATER MANAGEMENT | 2009年 / 96卷 / 09期

关键词：

Water use efficiency; Crop evapotranspiration; Water stress; Arid regions; Water production function; CHENOPODIUM-QUINOA WILLD; SIMULATE YIELD RESPONSE; MANGIFERA-INDICA L; USE EFFICIENCY; SUPPLEMENTAL IRRIGATION; WINTER-WHEAT; GRAIN-YIELD; HIGHLAND ENVIRONMENT; DRIP IRRIGATION; SEMIARID REGION;

D O I：

10.1016/j.agwat.2009.04.009

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Deficit irrigation (DI) has been widely investigated as a valuable and sustainable production strategy in dry regions. By limiting water applications to drought-sensitive growth stages, this practice aims to maximize water productivity and to stabilize - rather than maximize - yields. We review selected research from around the world and we summarize the advantages and disadvantages of deficit irrigation. Research results confirm that DI is successful in increasing water productivity for various crops without causing severe yield reductions. Nevertheless, a certain minimum amount of seasonal moisture must be guaranteed. DI requires precise knowledge of crop response to drought stress, as drought tolerance varies considerably by genotype and phenological stage. In developing optimizing DI strategies, field research should therefore be combined with crop water productivity modeling. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1275 / 1284

页数：10

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