| 渭北旱塬小麦的耗水特性与抗旱增产措施 |
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| 引用本文： | 陈培元,李英,蒋永罗,傅左.渭北旱塬小麦的耗水特性与抗旱增产措施[J].植物生态学报,1986,10(1):59-67. |
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| 作者姓名： | 陈培元 李英 蒋永罗 傅左 |
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| 作者单位： | 中国科学院西北水土保持研究所
(陈培元，李英，蒋永罗)，中国科学院西北水土保持研究所(傅左) |
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| 摘 要： | 本文系根据1981—1982年，作者在陕西省蒲城县建立了33个试验点的实验研究，结果表明：小麦整个生活期的耗水量界于303—476mm之间，每亩产量约为45—333公斤，水分利用效率为0.38—1.15。说明了小麦产量与耗水量或水分利用效率两者之间是密切相关的，而这又和小麦早春再生长以前的幼苗生长率之间成正相关。在非灌溉条件下，小麦的生长与产量显著地依赖于雨季保存在根层的土壤有效水。为了在不同的水分条件下提高旱地小麦生产力，本文介绍了能够促使小麦的根茎向较深的土层发展的措施，以提高抗旱能力。
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| 关 键 词： | 旱地 小麦 耗水量 |
ON SOME PROBLEMS OF CROP PRODUCTIVITY AND WATER CONSUMPTION CHARACTERISTICS OF WINTER WHEAT GROWTH UNDER DRYLAND CONDITION |
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| Chen Pei-yuan,Li Ying,Jiang Yong-luo,Fu Zuo.ON SOME PROBLEMS OF CROP PRODUCTIVITY AND WATER CONSUMPTION CHARACTERISTICS OF WINTER WHEAT GROWTH UNDER DRYLAND CONDITION[J].Acta Phytoecologica Sinica,1986,10(1):59-67. |
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| Authors: | Chen Pei-yuan Li Ying Jiang Yong-luo Fu Zuo |
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| Abstract: | In field trials in 1981–1982,33 experimental sites were established in Pucheng County Shaanxi, for studying water consumption (WS) of winter wheat under dryland condition. About 303–476mm of water were consummed by wheat in its whole life at different sites, which yielded grain range from 45 to 333 kg per mu respectively, with its water use efficiency (WUE)varying from 0.38 to 1.15. The correlations between the grain yield and the WS or the WUE were close, and all of those were positively correlated with the shoot growth rate of wheat in the seedling stage before regrowth in the following early spring. It was concluded that under non-irrigation condition, wheat growth and yield were dependent markedly on the available water preserved in the soil of its root distributed layer from the rainy season. To raise the crop productivity of dryland wheat, a system that can promote wheat root to strike downward to deeper into the soil and raise its drought resistance power and grain yield in different water conditions is recommended. |
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| Keywords: | Dryland Wheat Water consumption |
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