| 磁化水膜下滴灌对棉田水盐分布特征及棉花生长特性的影响 |
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| 引用本文： | 彭遥,周蓓蓓,张继红,唐湘伟,周英霞,陈晓鹏,王全九.磁化水膜下滴灌对棉田水盐分布特征及棉花生长特性的影响[J].水土保持学报,2019,33(5):334-342,357. |
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| 作者姓名： | 彭遥 周蓓蓓 张继红 唐湘伟 周英霞 陈晓鹏 王全九 |
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| 作者单位： | 1. 西安理工大学水利水电学院, 西北旱区生态水利工程国家重点实验室培育基地, 西安 710048;2. 中科院水利部水土保持研究所, 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西 杨凌 712100 |
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| 基金项目： | 国家重点研发计划项目（2016YFC0501405-4）；国家自然科学基金项目（41830754，51679190） |
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| 摘 要： | 通过田间小区磁化水滴灌试验,研究了磁化水膜下滴灌对土壤水盐分布特征、棉花生长特性及产量的影响。结果表明:磁化水灌溉可以提高土壤含水量,促进棉花根系对水分的吸收,0—100 cm土层内磁化强度为3 000 Gs时的土壤含水量最大,保水效果最好。磁化水灌溉可以有效降低土壤盐分含量,加快土壤盐分的淋洗,0—100 cm土层内各磁化水处理土壤平均含盐量表现为3 000 Gs4 000 Gs1 000 Gs5 000 Gs0 Gs,磁化淡水处理的土壤脱盐率为2.7%～28.2%,3 000 Gs磁化处理的土壤脱盐率最高;磁化微咸水处理的土壤积盐率为21.7%～33.9%。磁化水滴灌可以促进棉花生物量及产量的增长,淡水、微咸水磁化处理的产量较未磁化处理增加了8.98%～31.4%,3 000 Gs磁化处理下的棉花产量最高。从棉花生长特征、产量、水分利用效率等方面综合考虑,3 000 Gs为最佳磁化强度处理。
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| 关 键 词： | 磁化水 土壤水盐分布 棉花生长特性 棉花产量 水分利用效率 |
| 收稿时间： | 2019/2/27 0:00:00 |
Effects of Mulched Drip Irrigation with Magnetized Water on Soil Water-salt Distribution and Growth Characteristics of Cotton |
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| PENG Yao,ZHOU Beibei,ZHANG Jihong,TANG Xiangwei,ZHOU Yingxi,CHEN Xiaopeng,WANG Quanjiu.Effects of Mulched Drip Irrigation with Magnetized Water on Soil Water-salt Distribution and Growth Characteristics of Cotton[J].Journal of Soil and Water Conservation,2019,33(5):334-342,357. |
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| Authors: | PENG Yao ZHOU Beibei ZHANG Jihong TANG Xiangwei ZHOU Yingxi CHEN Xiaopeng WANG Quanjiu |
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| Institution: | 1. State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area, Xi''an University of Technology, Xi''an 710048;2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Yangling, Shaanxi 712100 |
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| Abstract: | A field experiment was conducted to study the soil water-salt distribution and cotton growth using magnetized water for mulched drip irrigation. Results showed that magnetized water used in the experiment could improve the soil water retention and holding capacity effectively, and promote the water absorption of cotton roots. The soil moisture content of 3 000 Gs magnetized water irrigation treatment was highest at the soil layer of 0-100 cm. The magnetized water irrigation could reduce the soil salt content effectively, due to the magnetized water treatment could facilitate the soil salt leaching from the main root area of cotton into the below. At the 0-100 cm soil layer, the salt contents under magnetized water irrigation treatments were 3 000 Gs(low) < 4 000 Gs < 1 000 Gs < 5 000 Gs < 0 Gs. The soil desalination rates under mulched drip irrigation with magnetized fresh water were 2.7%~28.2%, among which the 3000Gs treatment had the most significate impact on reducing soil salinity. The soil desalination rates for magnetized brackish water treatments were 21.7%~33.9%. The magnetized water irrigation could improve the cotton biomass and output. The yields of seed cotton of magnetized water were increased by 8.98%~31.40% compared with ordinary water. The 3 000 Gs treatment was the best magnetic treatment by taking into consideration of both cotton output and water use efficiency. |
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| Keywords: | magnetized water soil water-salt distribution growth characteristics of cotton cotton output water use efficiency |
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