| 潘小莲，李 秀，赵 英，张建国，张阿凤，冯 浩.黄土高原旱塬区不同覆盖模式下冬小麦耗水特征及根系生长规律研究[J].麦类作物学报,2018,(6):726 |
| 黄土高原旱塬区不同覆盖模式下冬小麦耗水特征及根系生长规律研究 |
| Characteristics of Water Consumption and Root Growth of Winter Wheat under Different Covering Modes in Arid Tableland of the Loess Plateau |
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| DOI：10.7606/j.issn.1009-1041.2018.06.13 |
| 中文关键词: 覆盖模式 微根管 根系生长 土壤水分 产量 |
| 英文关键词:Covering modes Minirhizotron Root development Soil moisture Yield |
| 基金项目:国家863计划项目(2013AA102904)；陕西省科学技术研究发展计划项目(2014KJXX-44) |
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| 中文摘要: |
| 为探究黄土高原旱塬区不同覆盖模式对冬小麦耗水及根系生长的影响，采用微根管动态监测技术，连续两年对比分析平作不覆盖（T0）、秸秆覆盖平作（T1）、半膜覆盖垄作（T2）和垄上覆膜沟覆秸秆（T3）4种处理下冬小麦不同生育时期0~130 cm土层根系密度及土壤水分的变化。结果表明，与T0处理相比，T1、T2和T3处理对冬小麦耗水总量无显著影响，T1、T2和T3处理的水分利用效率分别提高25.42%、 9.68%和 20.13%。T1、T2和T3处理均会减小冬小麦根系富集深度，使根系分布深度上移，根系富集区离地表深度表现为T2 |
| 英文摘要: |
| Field experiment was conducted to explore the effects of different covering modes on characteristics of water consumption and root growth of winter wheat in arid tableland of the Loess Plateau. Minirhizotron root monitoring system was used to study the root length density and soil moisture in a 0-130 cm soil profile at different growth stages for two years. There were four treatments:flat plot without mulching(T0), flat plot with straw mulching(T1), plastic mulching on soil ridges(T2), and plastic mulching on soil ridges and straw mulching in furrows(T3). The results showed that T1, T2 and T3 had no significant effect on total water consumption in comparison with T0. However, water use efficiency of T1, T2 and T3 was increased by 25.42%, 9.68% and 20.13%, respectively. T1, T2 and T3 also reduced the depth of root enrichment zone, and shallowed depth of root enrichment zone in the order of T2 |
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