排灌机械工程学报
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排灌机械工程学报  2018, Vol. 36 Issue (6): 529-535    DOI: 10.3969/j.issn.1674-8530.17.0021
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添加γ-聚谷氨酸的浑水膜孔灌单点源自由入渗特性
陈琳1, 费良军1, 王子路2, 郭欣3, 曾建1, 杨扬1
1.西安理工大学水利水电学院, 陕西 西安 710048; 2.黄河水利科学研究院, 河南 郑州 450003; 3.山东福瑞达生物科技有限公司, 山东 济南 250101
Single-point free infiltration characteristics of muddy water film hole irrigation with γ-PGA additive
CHEN Lin1, FEI Liangjun1, WANG ZiLu2, GUO Xin3, ZENG Jian1, YANG yang1
1.Institute of Water Resources and Hydro-electric Engineering, Xi′an University of Technology, Xi′ an, Shaanxi 710048, China; 2.Yellow River Institute of Hydraulic Research, Zhengzhou, Henan 450003, China; 3.Shandong Freda Biological Technology Co., Ltd., Jinan, Shandong 250101, China
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摘要 为探究聚谷氨酸对浑水膜孔灌条件下土壤水分入渗运动和土壤改良方面的影响,基于室内浑水膜孔灌单点源自由入渗试验,研究了不同γ-PGA施量配比(0,0.1%,0.5%,1.0%)对水分入渗及持水能力的影响.研究结果表明,对于累积入渗量,与处理C相比,处理C1、处理C2、处理C3的累积入渗量分别减小了17.27%,30.91%和42.73%,稳定入渗率分别减小了17.28%,35.79%和57.32%,但土壤饱和含水率分别增加了7.38%,35.27%和39.62%;Kostiakov公式中K值从0.132 8减小到0.070 7,α值从0.774 6增大到0.812 7;γ-PGA会阻碍垂直湿润锋运移,使得土壤水分保持在土壤根系吸水层,但对水平湿润锋的运移并没有阻碍作用,并且对土壤水分的水平运动有推进作用,0.5%γ-PGA施量效果最显著;另外,γ-PGA改变了土壤剖面水分分布,在浑水膜孔灌中,可将水分集中在土壤上层,提高灌溉水利用效率.
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陈琳
费良军
王子路
郭欣
曾建
杨扬
关键词γ-聚谷氨酸   浑水膜孔灌   土壤持水能力   入渗特性   Kostiakov公式     
Abstract: In order to explore the effect of gamma-PGA on soil water infiltration and soil environmental improvement of muddy water film hole irrigation, we used the test of single-point free infiltration of muddy water Film Hole irrigation to study the soil water infiltration and water holding capacity with the different γ-PGA content being mixed with soil(0,0.1%,0.5%,1%). The results indicated that compared with treatment C, the cumulative infiltration volume of C1, C2, C3 were decreased by 17.27%, 30.91% and 42.73%, respectively. The constant infiltration rate of C1, C2, C3were decreased by 17.28%, 35.79% and 57.32%, respectively. But compared with treatment C, the saturated soil moisture content C1, C2, C3 were increased by 7.38%, 35.27% and 39.62%, respectively. The infiltration coefficient in Kostiakov formula reduced from0.132 8 to 0.070 7 and the infiltration index increased from 0.774 6 to 0.812 7. γ-PGA hindered the migration of vertical wetting front and led to keep the soil water in soil root water absorption layer. Butγ-PGA had no effect on the migration of horizontal wetting front and had propulsion function on horizontal movement of soil water. The treatment with 0.5% γ-PGA content was the best. In addition, γ-PGA could change the water distribution in soil profile. γ-PGA could concentrate water in the upper soil to satisfy the full water supply for crop seedling stage and improve irrigation water use efficiency.
Key wordspoly-γ-glutamic acid   muddy water film hole irrigation   soil water holding capacity   the characteristics of soil water infiltration   Kostiakov formula   
收稿日期: 2017-01-23;
基金资助:

国家自然科学基金资助项目(51479161);公益性行业(农业)科研专项(201203003)

引用本文:   
陈琳,费良军,王子路等. 添加γ-聚谷氨酸的浑水膜孔灌单点源自由入渗特性[J]. 排灌机械工程学报, 2018, 36(6): 529-535.
CHEN Lin-,FEI Liang-Jun-,WANG Zi-Lu- et al. Single-point free infiltration characteristics of muddy water film hole irrigation with γ-PGA additive[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(6): 529-535.
 
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