排灌机械工程学报
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排灌机械工程学报  2018, Vol. 36 Issue (11): 1168-1174    DOI: 10.3969/j.issn.1674-8530.18.1209
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不同灌溉方式对降雨入渗深度的影响
靳晓辉, 陈敏建*, 闫龙, 汪勇, 邓伟
中国水利水电科学研究院水资源研究所, 北京 100038
Influences of irrigation method on rainfall infiltration depth
JIN Xiaohui, CHEN Minjian*, YAN Long, WANG Yong, DENG Wei
Department of Water Resources China Institute of Water Resources and Hydropower Research, Beijing 100038, China
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摘要 为了研究不同灌溉方式对降雨入渗深度的影响,基于田间原位观测试验,分析膜下滴灌和传统地面灌溉2种方式对降雨入渗初始含水率的影响,并应用HYDRUS-2D模型模拟2种灌溉方式下不同降雨条件的入渗深度差异.结果表明:与传统地面灌溉方式相比,膜下滴灌改变了降雨入渗初始含水率,且在玉米不同的生育期,其对降雨入渗初始含水率的影响规律不同.通过不同情景的降雨入渗模拟得到,在初始条件完全相同的情况下,2种方式的降雨入渗深度主要受雨量和时间的影响,在降雨量较小时,膜下滴灌的入渗深度大于地面灌;随着降雨量及时间增加,2种灌溉方式下的入渗深度逐渐趋于一致.不论是玉米苗期阶段还是主要生长阶段,降雨入渗的土壤初始含水率均会对降雨入渗深度产生一定的影响:在玉米苗期阶段,膜下滴灌的入渗深度大于地面灌,而在玉米主要生长阶段,地面灌的入渗深度大于膜下滴灌.
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靳晓辉
陈敏建*
闫龙
汪勇
邓伟
关键词灌溉方式   土壤含水量   HYDRUS-2D模型   降雨入渗深度     
Abstract: In order to study influences of irrigation method on rainfall infiltration depth, based on field in-situ observation experiment, the influences of drip irrigation under film and traditional surface irrigation conditions on initial moisture of rainfall infiltration were analyzed in the paper, and HYDRUS-2D software was applied to simulate the differences in rainfall infiltration under two irrigation conditions. The results showed that the drip irrigation under film altered the initial moisture of rainfall infiltration, and its influence on the initial moisture varied in different growth periods of maize. The rainfall infiltrations were simulated in different scenarios and it was demonstrated that under the same initial condition, the rainfall infiltration depth in two irrigation methods was mainly affected by rainfall and duration. If the rainfall is small, then the infiltration depth of drip irrigation under film is greater than that of traditional surface irrigation; with the increase of rainfall and duration, however, the infiltration depth of two irrigation methods tends to be consistent. Regardless of whether it is maize seedling or main growth stage, the initial soil moisture of rainfall infiltration always has a certain impact on the rainfall infiltration depth. In the seedling stage, the infiltration depth of drip irrigation under film is deeper than that of surface irrigation, but in the main growth stage, the infiltration depth of surface irrigation is deeper than that of drip irrigation under film.
Key wordsirrigation method   soil moisture content   HYDRUS-2D   rainfall infiltration depth   
收稿日期: 2018-05-15;
基金资助:

水利部公益性行业科研专项(1261530110115)

引用本文:   
靳晓辉,陈敏建*,闫龙等. 不同灌溉方式对降雨入渗深度的影响[J]. 排灌机械工程学报, 2018, 36(11): 1168-1174.
JIN Xiao-Hui,CHEN Min-Jian-*,YAN Long et al. Influences of irrigation method on rainfall infiltration depth[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(11): 1168-1174.
 
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