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| 旱地不同生态型冬小麦水分利用效率对播前底墒的响应 | |
| 引用本文： | 罗俊杰,王勇,樊廷录. 旱地不同生态型冬小麦水分利用效率对播前底墒的响应[J]. 干旱地区农业研究, 2010, 28(1): 61-65 |
| 作者姓名： | 罗俊杰 王勇 樊廷录 |
| 作者单位： | 1. 甘肃省农业科学院生物技术研究所,甘肃,兰州,730070 2. 甘肃省农业科学院旱地农业研究所,甘肃,兰州,730070 3. 甘肃省农业科学院科研处,甘肃,兰州,730070 |
| 基金项目： | 国家“十五”攻关课题“北方旱塬区优质粮食产业开发模式与技术研究”(2001BA508B11) |
| 摘 要： | 针对甘肃陇东旱作区冬小麦产量低而不稳、水分利用效率低下,冬小麦夏季休闲期正值该区的降雨高峰期,降雨和无效蒸发同步且土壤保持水分不足的问题开展试验研究。通过夏季休闲期的地膜覆盖、集雨抑蒸,提高播前底墒,并对模拟底墒试验的产量、水分利用效率(WUE)进行分析,得出:冬小麦产量与播前底墒具有显著的相关性,基于一定底墒条件下的底墒和生育期降水互作分析表明,产量与播前底墒的拟合度高于与生育期降水拟合;播前底墒对不同生态类型冬小麦产量和WUE有显著的影响,高底墒条件下的产量、WUE分别较中底墒和低底墒高28.40、70.43和22.94、75.06个百分点;在夏休闲期采用集流入渗抑蒸技术,使土壤蓄水效率由传统耕作的33%~38%提高到60%~70%,蓄保夏休闲期的降雨于土壤中,对于稳定提高适宜生态型冬小麦产量有显著的作用。 |
| 关 键 词： | 旱地 冬小麦 生态型 水分利用效率 底墒 |
Effect of winter wheat yield and WUE with different soil water before sowing in semi-arid areas |
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| LUO Junjie,WANG Yong,FAN Tinglu. Effect of winter wheat yield and WUE with different soil water before sowing in semi-arid areas[J]. Agricultural Research in the Arid Areas, 2010, 28(1): 61-65 | |
| Authors: | LUO Junjie WANG Yong FAN Tinglu |
| Affiliation: | 1.Institute of Bio-technology;GAAS;Lanzhou;Gansu 730070;China;2.Institute of Dryland Agriculture;3.Department Science and Technology;China |
| Abstract: | According to the wheat yield and water use efficiency low and instability in arid of eastern Gansu.The summer fallow coincides with the rainy season and evaporation fastigium,which brings the insufficiency of soil water storage in East Gansu rain-fed areas.Covering field with plastic film in this season to collect water and restrain it from evaporation could increase the water storage in soil.An experiment was made in summer fallow time in which bare land was covered with plastic film for restoring the rain... |
| Keywords: | dry land winter wheat ecotype WUE soil water before sowing |
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