| 引用本文: | 窦超银,孟维忠,佟威,等.风沙土玉米地下滴灌技术田间应用试验研究[J].灌溉排水学报,2018,37(8):46-50. |
| DOU Chaoyin,MENG Weizhong,TONG Wei,et al.风沙土玉米地下滴灌技术田间应用试验研究[J].灌溉排水学报,2018,37(8):46-50. |
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| 摘要: |
| 【目的】探索地下滴灌技术在风沙土地区应用的适宜性。【方法】将地下滴灌与膜下滴灌、雨养无灌溉进行田间对比试验研究，分析了不同灌溉方式对玉米生长和产量的影响。【结果】采用地下滴灌，灌溉水主要分布在20 cm以下土层，土壤含水率长期保持在6%以上；玉米生长前期株高、茎粗和LAI等长势慢于膜下滴灌，但随着玉米生长，株高和LAI最终与膜下滴灌处理持平，且玉米生长后期，地下滴灌有利于延缓叶片衰老；地下滴灌玉米产量为7.5 t/hm2，WUE为1.9 kg/m3，与膜下滴灌相比，产量和WUE分别减少了0.8 t/hm2和0.3 kg/m3，但差异不显著，与雨养种植相比，地下滴灌显著提高了产量和WUE，分别提高了126.4%和73.6%。【结论】从长久的生态效益和经济效益来看，地下滴灌技术可作为风沙土地区农业灌溉的选择。 |
| 关键词: 滴灌； 水分利用效率； 玉米； 产量； 叶面积指数 |
| DOI：10.13522/j.cnki.ggps.2016.0120 |
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| Application of Subsurface Drip Irrigation to Maize Field in Aeolian Sandy Soil |
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DOU Chaoyin, MENG Weizhong, TONG Wei, CHEN Wei, YAN Weichen
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1. School of Hydraulic Energy and Power Engineering, Yangzhou University, Yangzhou 225009, China; 2. Water Conservancy and Hydropower Science Research Institute of Liaoning, Shenyang 110003, China
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| Abstract: |
| 【Objective】 Subsurface drip irrigation has been developed into an efficient technique for water-saving irrigation in arid and semiarid regions, and the purpose of this work is to examine its feasibility for aeolian sandy soil. 【Method】 We took maize as the model plant and conducted a field experiments with three irrigation methods: subsurface drip irrigation (SD), mulched-drip irrigation (MD) and rain-fed without irrigation (CK). The growth and yield of the maize in each treatment were measured. 【Result】 Under SD, the irrigated water was mainly reserved in the soil below 20 cm, soil water content in which remained 6% or above for a significant period. In the early growth stage, plant height, stem diameter and LAI were slower under SP than under MD. With the plant growing, however, the difference in plant height and LAI between the two treatments disappeared. In the late growth stage, the withering of leaf was delayed in SD treatment. The yield and water use efficiency of SD were 7.5 t/hm2 and 1.9 kg/m3 respectively, 0.8 t/hm2 and 0.3 kg/m3 less than those of MD, but 126.4% and 73.6% higher than those of CK. The differences between SD and MD were insignificant, but SD and MD differed significantly from CK. 【Conclusion】 Considering its ecological and economic benefits, SD is suitable for use in such soils. |
| Key words: irrigation; water use efficiency; maize; yield; leaf area index |
