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首页> 外文期刊>Agricultural Water Management >Winter wheat grain yield and water use efficiency in wide-precision planting pattern under deficit irrigation in North China Plain
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Winter wheat grain yield and water use efficiency in wide-precision planting pattern under deficit irrigation in North China Plain

机译：华北平原亏缺灌溉条件下宽播模式下冬小麦籽粒产量和水分利用效率

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摘要

Water resources in North China Plain are limited; however, the Plain is the most important winter wheat production area in China and winter wheat should be irrigated to get high grain yield. To better understand the potential for improving grain yield and water use efficiency (WUE), treatment effects of planting patterns and deficit irrigation were quantified on tillers number, grain yield, evapotranspiration, and WUE during the 2010-2011 and 2011-2012 winter wheat growing seasons. The two planting patterns were wide-precision planting pattern (sowing width was 6-8 cm) and conventional-cultivation planting pattern (sowing width was 3-5 cm). Each planting pattern had three irrigation regimes, i.e., no irrigation, irrigated 60.0 mm only at jointing stage, and irrigated 60.0 mm each at jointing and heading stages. Results indicated that whether irrigated or not, tillers number was significantly higher in the wide-precision planting pattern than in the conventional-cultivation planting pattern; accounting for spike numbers in wide-precision planting pattern being significantly higher than in conventional-cultivation planting pattern. Grain yield was increased when irrigation amount increased, and was significantly higher in the wide-precision planting pattern than in the conventional-cultivation planting pattern. Significant interaction between planting patterns and deficit irrigation regimes occurred in both 2010-2011 and 2011-2012 grain yields. Under the same deficit irrigation regime, there were not significant differences in the evapotranspiration between the two planting patterns. In the both growing seasons, irrespective of irrigation treatment, WUE was significantly higher in the wide-precision planting pattern than in the conventional-cultivation planting pattern. Results support the application of wide-precision planting pattern in combination with deficit irrigation for maximizing winter wheat production in North China Plain. (C) 2015 Elsevier B.V. All rights reserved.
机译：华北平原的水资源有限;然而，平原是中国最重要的冬小麦产区，应灌溉冬小麦以提高谷物产量。为了更好地了解提高谷物产量和水分利用效率（WUE）的潜力，对2010-2011年和2011-2012年冬小麦分till期间的分ers数，谷物产量，蒸散量和WUE进行了种植模式和亏缺灌溉的处理效果定量分析季节。两种种植方式为高精度种植方式（播种宽度为6-8厘米）和常规栽培种植方式（播种宽度为3-5厘米）。每种种植模式均具有三种灌溉方式，即不灌溉，仅在拔节阶段灌溉60.0 mm，在拔节和抽穗阶段分别灌溉60.0 mm。结果表明，无论是否灌溉，宽精度种植模式下的分ers数均明显高于常规栽培模式;高精度种植模式中的穗数明显高于常规栽培种植模式。当灌溉量增加时，谷物产量增加，并且在宽精度种植模式下明显高于常规栽培种植模式。在2010-2011年和2011-2012年谷物单产中，种植方式与亏缺灌溉制度之间存在显着的相互作用。在相同的亏缺灌溉制度下，两种种植方式之间的蒸散量没有显着差异。在两个生长季节中，无论灌溉方式如何，宽精度种植模式下的WUE均显着高于常规种植模式下的WUE。研究结果支持将高精度种植模式与亏缺灌溉相结合，以最大限度地提高华北平原冬小麦的产量。 （C）2015 Elsevier B.V.保留所有权利。

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