| 膜下滴灌对小麦根系分布特征的影响 |
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| 引用本文： | 李熙婷,田德龙,郭克贞,徐冰,赵淑银.膜下滴灌对小麦根系分布特征的影响[J].排灌机械工程学报,2016,34(6):545-552. |
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| 作者姓名： | 李熙婷 田德龙 郭克贞 徐冰 赵淑银 |
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| 作者单位： | 1.内蒙古农业大学水利与土木建筑工程学院, 内蒙古 呼和浩特 010018; 2.水利部牧区水利科学研究所, 内蒙古 呼和浩特 010020 |
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| 摘 要： | 为了研究膜下滴灌小麦在河套灌区的适用性及根系分布特征,在河套地区开展了常规畦灌小麦与膜下滴灌小麦的对比试验.试验结果表明,膜下滴灌小麦在整个生育期内的保墒作用明显,且其根长密度、根表面积密度、根体积密度在主要的浸润层0~30 cm均优于CK;种植模式不同时,1膜5行的种植模式的根系指标数值在各个土层内平均大于1膜6行5.9%;灌水水平不同时,充分灌溉促进了0~30 cm土层中的根系生长,而轻度水分亏缺有利于深层土壤中根系的生长.膜下滴灌小麦各处理的产量、作物水分生产率与灌溉水分生产率显著高于CK,产量较CK分别提高了19.6%,14.6%,19.5%,14.7%,作物水分生产率较CK分别提高了28.2%,27.3%,29.6%,27.3%,灌溉水分生产率分别提高了37.1%,40.7%,42%,41.8%.1膜5行的充分灌溉处理不仅促进了根系的生长,同时为产量、作物水分生产率、灌溉水分生产率最优,是兼顾高产与提高作物水分生产率的优良种植模式.
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| 关 键 词： | 小麦 膜下滴灌 种植模式 根系生长 水分生产效率 |
| 收稿时间： | 2015-07-31 |
Influence of mulch drip irrigation on wheat root distribution characteristics |
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| LI Xiting,TIAN Delong,GUO Kezhen,XU Bin,ZHAO Shuyin.Influence of mulch drip irrigation on wheat root distribution characteristics[J].Journal of Drainage and Irrigation Machinery Engineering,2016,34(6):545-552. |
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| Authors: | LI Xiting TIAN Delong GUO Kezhen XU Bin ZHAO Shuyin |
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| Institution: | 1.Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China; 2.Hydroelectric and Water Conservancy Science Institute, China′s Scientific Research Institute in the Pastoral Areas of Water Conservancy, Hohhot, Inner Mongolia 010020, China |
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| Abstract: | In order to explore the applicability of wheat by mulch drip irrigation in Hetao irrigation areas and root distribution characteristics, the contrast test for wheat by border irrigation and mulch drip irrigation was conducted in the Hetao region. The test results show that in mulch drip irrigation of wheat, its root length density,root surface area density,root volume density at the main infiltration layer of 0-30 cm were better than CK. When the planting pattern is different, the root indicators numerical average of the planting patterns of film with 5 lines at each soil layer is 5.9% greater than that of film with 6 lines. When the irrigation level is different, the sufficient irrigation accelerates the root growth at 0-30 cm soil layer, and the mild water deficit is beneficial to the growth of deep root in the soil. Wheat yield and water use efficiency and irrigation water productivity by different treatments of mulch drip irrigation are significantly higher than CK, the yield increased by 19.6%,14.6%,19.5% and 14.7% respectively as compared with CK, water use efficiency increased by 28.2%,27.3%,29.6% and 27.3% respectively, and irrigation water productivity increased by 37.1%,40.7%,42.0% and 41.8% respectively. The sufficient irrigation of film with 5 lines accelerates the root growth and at the same time, the yield,water use efficiency and irrigation water productivity are optimal, which is the best planting pattern of high yield and water use efficiency. |
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| Keywords: | wheat mulch irrigation planting pattern root growth water use efficiency |
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