| 韩美坤，张 萌，李金鹏，徐学欣，王云奇，张英华，王志敏.播前贮墒量对黑龙港平原旱作冬小麦产量及水分利用的影响[J].麦类作物学报,2017,(9):1201 |
| 播前贮墒量对黑龙港平原旱作冬小麦产量及水分利用的影响 |
| Influence of Different Soil Water Storage before Sowing on Yield and Water Use Efficiency of Winter Wheat in the Heilonggang Plain |
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| DOI：10.7606/j.issn.1009-1041.2017.09.10 |
| 中文关键词: 冬小麦 贮墒量 产量 水分利用效率 |
| 英文关键词:Wheat Soil water storage before sowing Grain yield Water use efficiency |
| 基金项目:国家重点研发计划项目（2016YFD0300401）；国家小麦产业技术体系项目（CARS301） |
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| 中文摘要: |
| 为明确黑龙港平原正在推广应用的冬小麦贮墒旱作栽培的播前土壤适宜墒情，研究了不同贮墒水平对小麦产量和水分利用效率的影响。试验于2014-2015和2015-2016年在河北吴桥进行，通过播前补灌设置5个贮墒水平，即2 m土体含水量分别为田间持水量的75%(W1）、 80%(W2）、 85%(W3）、90%(W4）、100%(W5）。结果表明，随贮墒量的增加，小麦全生育期耗水量显著增大，以W5处理的耗水量最大；提高贮墒量可促进小麦增产，但在贮墒量达到一定程度后产量变化不再明显，两年平均产量以W4处理最大；在W1、W2和W3处理间小麦水分利用效率差异不显著，而W4和W5处理显著低于前三个处理。在本试验土壤及降雨条件下，把播前2 m土壤含水量调整为田间持水量的85%~90%是贮墒旱作最适宜的贮墒水平。 |
| 英文摘要: |
| To evaluate effects of different soil water content before sowing on grain yield and water use characteristics in winter wheat without supplemental irrigation during whole growing season,a field experiment was conducted with five soil relative water content treatments in 0-2 m soil layer by 75%(W1),80%(W2),85%(W3),90%(W4) and 100%(W5) applied before wheat sowing in 2014-2015 and 2015-2016 at Wuqiao,Hebei. The results showed that,with the increase of soil water content before sowing,the total water consumption was increased concomitantly.The high soil water content before sowing could increase wheat grain yield,but the excessive soil water could not concomitantly enhance the yield. The water use efficiency(WUE) showed a trend of increase and then decrease with the increase of soil water content before sowing. The highest yield and WUE were achieved under W4 and W3 treatments,respectively.These results indicated that the optimal soil water content for no-irrigation wheat was 85%-90% of field capacity in the Heilonggang Plain. |
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